diff options
Diffstat (limited to 'thirdparty')
| -rw-r--r-- | thirdparty/README.md | 14 | ||||
| -rw-r--r-- | thirdparty/xatlas/LICENSE | 14 | ||||
| -rw-r--r-- | thirdparty/xatlas/xatlas.cpp | 2340 | ||||
| -rw-r--r-- | thirdparty/xatlas/xatlas.h | 58 |
4 files changed, 1400 insertions, 1026 deletions
diff --git a/thirdparty/README.md b/thirdparty/README.md index ebdd0b5d04..6c83259a9e 100644 --- a/thirdparty/README.md +++ b/thirdparty/README.md @@ -545,6 +545,20 @@ They can be reapplied using the patches included in the `vhacd` folder. +## xatlas + +- Upstream: https://github.com/jpcy/xatlas +- Version: git (b8ec29b, 2018) +- License: MIT + +Files extracted from upstream source: + +- `xatlas.{cpp,h}` + +Note: License is marked as Public Domain in the files, but it was +later clarified upstream to MIT license. + + ## zlib - Upstream: http://www.zlib.net diff --git a/thirdparty/xatlas/LICENSE b/thirdparty/xatlas/LICENSE new file mode 100644 index 0000000000..94d0c60485 --- /dev/null +++ b/thirdparty/xatlas/LICENSE @@ -0,0 +1,14 @@ +xatlas +https://github.com/jpcy/xatlas +Copyright (c) 2018 Jonathan Young + +thekla_atlas +https://github.com/Thekla/thekla_atlas +Copyright (c) 2013 Thekla, Inc +Copyright NVIDIA Corporation 2006 -- Ignacio Castano <icastano@nvidia.com> + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/thirdparty/xatlas/xatlas.cpp b/thirdparty/xatlas/xatlas.cpp index f6a9ce64dc..df5ef94dbb 100644 --- a/thirdparty/xatlas/xatlas.cpp +++ b/thirdparty/xatlas/xatlas.cpp @@ -1,5 +1,9 @@ // This code is in the public domain -- castanyo@yahoo.es -#include "xatlas.h" +#include <algorithm> +#include <cmath> +#include <memory> +#include <unordered_map> +#include <vector> #include <assert.h> #include <float.h> #include <math.h> @@ -8,29 +12,19 @@ #include <stdio.h> #include <string.h> #include <time.h> -#include <algorithm> -#include <cmath> -#include <memory> -#include <unordered_map> -#include <vector> +#include "xatlas.h" #undef min #undef max #ifndef xaAssert -#define xaAssert(exp) \ - if (!(exp)) { \ - xaPrint("%s %s %s\n", #exp, __FILE__, __LINE__); \ - } +#define xaAssert(exp) if (!(exp)) { xaPrint("%s %s %s\n", #exp, __FILE__, __LINE__); } #endif #ifndef xaDebugAssert #define xaDebugAssert(exp) assert(exp) #endif #ifndef xaPrint -#define xaPrint(...) \ - if (xatlas::internal::s_print) { \ - xatlas::internal::s_print(__VA_ARGS__); \ - } +#define xaPrint(...) if (xatlas::internal::s_print) { xatlas::internal::s_print(__VA_ARGS__); } #endif #ifdef _MSC_VER @@ -43,87 +37,101 @@ #define NV_FORCEINLINE __forceinline #else #define restrict __restrict__ -#define NV_FORCEINLINE __attribute__((always_inline)) inline +#define NV_FORCEINLINE __attribute__((always_inline)) inline #endif -#define NV_UINT32_MAX 0xffffffff -#define NV_FLOAT_MAX 3.402823466e+38F +#define NV_UINT32_MAX 0xffffffff +#define NV_FLOAT_MAX 3.402823466e+38F #ifndef PI -#define PI float(3.1415926535897932384626433833) +#define PI float(3.1415926535897932384626433833) #endif -#define NV_EPSILON (0.0001f) -#define NV_NORMAL_EPSILON (0.001f) +#define NV_EPSILON (0.0001f) +#define NV_NORMAL_EPSILON (0.001f) namespace xatlas { namespace internal { static PrintFunc s_print = NULL; -static int align(int x, int a) { +static int align(int x, int a) +{ return (x + a - 1) & ~(a - 1); } -static bool isAligned(int x, int a) { +static bool isAligned(int x, int a) +{ return (x & (a - 1)) == 0; } /// Return the maximum of the three arguments. template <typename T> -static T max3(const T &a, const T &b, const T &c) { +static T max3(const T &a, const T &b, const T &c) +{ return std::max(a, std::max(b, c)); } /// Return the maximum of the three arguments. template <typename T> -static T min3(const T &a, const T &b, const T &c) { +static T min3(const T &a, const T &b, const T &c) +{ return std::min(a, std::min(b, c)); } /// Clamp between two values. template <typename T> -static T clamp(const T &x, const T &a, const T &b) { +static T clamp(const T &x, const T &a, const T &b) +{ return std::min(std::max(x, a), b); } -static float saturate(float f) { +static float saturate(float f) +{ return clamp(f, 0.0f, 1.0f); } // Robust floating point comparisons: // http://realtimecollisiondetection.net/blog/?p=89 -static bool equal(const float f0, const float f1, const float epsilon = NV_EPSILON) { +static bool equal(const float f0, const float f1, const float epsilon = NV_EPSILON) +{ //return fabs(f0-f1) <= epsilon; return fabs(f0 - f1) <= epsilon * max3(1.0f, fabsf(f0), fabsf(f1)); } -NV_FORCEINLINE static int ftoi_floor(float val) { +NV_FORCEINLINE static int ftoi_floor(float val) +{ return (int)val; } -NV_FORCEINLINE static int ftoi_ceil(float val) { +NV_FORCEINLINE static int ftoi_ceil(float val) +{ return (int)ceilf(val); } -NV_FORCEINLINE static int ftoi_round(float f) { +NV_FORCEINLINE static int ftoi_round(float f) +{ return int(floorf(f + 0.5f)); } -static bool isZero(const float f, const float epsilon = NV_EPSILON) { +static bool isZero(const float f, const float epsilon = NV_EPSILON) +{ return fabs(f) <= epsilon; } -static float lerp(float f0, float f1, float t) { +static float lerp(float f0, float f1, float t) +{ const float s = 1.0f - t; return f0 * s + f1 * t; } -static float square(float f) { +static float square(float f) +{ return f * f; } -static int square(int i) { +static int square(int i) +{ return i * i; } @@ -133,8 +141,9 @@ static int square(int i) { * @note isPowerOfTwo(x) == true -> nextPowerOfTwo(x) == x * @note nextPowerOfTwo(x) = 2 << log2(x-1) */ -static uint32_t nextPowerOfTwo(uint32_t x) { - xaDebugAssert(x != 0); +static uint32_t nextPowerOfTwo(uint32_t x) +{ + xaDebugAssert( x != 0 ); // On modern CPUs this is supposed to be as fast as using the bsr instruction. x--; x |= x >> 1; @@ -145,7 +154,8 @@ static uint32_t nextPowerOfTwo(uint32_t x) { return x + 1; } -static uint64_t nextPowerOfTwo(uint64_t x) { +static uint64_t nextPowerOfTwo(uint64_t x) +{ xaDebugAssert(x != 0); uint32_t p = 1; while (x > p) { @@ -154,17 +164,19 @@ static uint64_t nextPowerOfTwo(uint64_t x) { return p; } -static uint32_t sdbmHash(const void *data_in, uint32_t size, uint32_t h = 5381) { - const uint8_t *data = (const uint8_t *)data_in; +static uint32_t sdbmHash(const void *data_in, uint32_t size, uint32_t h = 5381) +{ + const uint8_t *data = (const uint8_t *) data_in; uint32_t i = 0; while (i < size) { - h = (h << 16) + (h << 6) - h + (uint32_t)data[i++]; + h = (h << 16) + (h << 6) - h + (uint32_t ) data[i++]; } return h; } // Note that this hash does not handle NaN properly. -static uint32_t sdbmFloatHash(const float *f, uint32_t count, uint32_t h = 5381) { +static uint32_t sdbmFloatHash(const float *f, uint32_t count, uint32_t h = 5381) +{ for (uint32_t i = 0; i < count; i++) { union { float f; @@ -177,85 +189,93 @@ static uint32_t sdbmFloatHash(const float *f, uint32_t count, uint32_t h = 5381) } template <typename T> -static uint32_t hash(const T &t, uint32_t h = 5381) { +static uint32_t hash(const T &t, uint32_t h = 5381) +{ return sdbmHash(&t, sizeof(T), h); } -static uint32_t hash(const float &f, uint32_t h) { +static uint32_t hash(const float &f, uint32_t h) +{ return sdbmFloatHash(&f, 1, h); } // Functors for hash table: -template <typename Key> -struct Hash { +template <typename Key> struct Hash +{ uint32_t operator()(const Key &k) const { return hash(k); } }; -template <typename Key> -struct Equal { +template <typename Key> struct Equal +{ bool operator()(const Key &k0, const Key &k1) const { return k0 == k1; } }; -class Vector2 { +class Vector2 +{ public: typedef Vector2 const &Arg; Vector2() {} - explicit Vector2(float f) : - x(f), - y(f) {} - Vector2(float x, float y) : - x(x), - y(y) {} - Vector2(Vector2::Arg v) : - x(v.x), - y(v.y) {} - - const Vector2 &operator=(Vector2::Arg v) { + explicit Vector2(float f) : x(f), y(f) {} + Vector2(float x, float y): x(x), y(y) {} + Vector2(Vector2::Arg v) : x(v.x), y(v.y) {} + + const Vector2 &operator=(Vector2::Arg v) + { x = v.x; y = v.y; - return *this; + return + *this; } const float *ptr() const { return &x; } - void set(float _x, float _y) { + void set(float _x, float _y) + { x = _x; y = _y; } - Vector2 operator-() const { + Vector2 operator-() const + { return Vector2(-x, -y); } - void operator+=(Vector2::Arg v) { + void operator+=(Vector2::Arg v) + { x += v.x; y += v.y; } - void operator-=(Vector2::Arg v) { + void operator-=(Vector2::Arg v) + { x -= v.x; y -= v.y; } - void operator*=(float s) { + void operator*=(float s) + { x *= s; y *= s; } - void operator*=(Vector2::Arg v) { + void operator*=(Vector2::Arg v) + { x *= v.x; y *= v.y; } - friend bool operator==(Vector2::Arg a, Vector2::Arg b) { + friend bool operator==(Vector2::Arg a, Vector2::Arg b) + { return a.x == b.x && a.y == b.y; } - friend bool operator!=(Vector2::Arg a, Vector2::Arg b) { + friend bool operator!=(Vector2::Arg a, Vector2::Arg b) + { return a.x != b.x || a.y != b.y; } - union { + union + { #ifdef _MSC_VER #pragma warning(push) #pragma warning(disable : 4201) @@ -272,52 +292,64 @@ public: }; }; -Vector2 operator+(Vector2::Arg a, Vector2::Arg b) { +Vector2 operator+(Vector2::Arg a, Vector2::Arg b) +{ return Vector2(a.x + b.x, a.y + b.y); } -Vector2 operator-(Vector2::Arg a, Vector2::Arg b) { +Vector2 operator-(Vector2::Arg a, Vector2::Arg b) +{ return Vector2(a.x - b.x, a.y - b.y); } -Vector2 operator*(Vector2::Arg v, float s) { +Vector2 operator*(Vector2::Arg v, float s) +{ return Vector2(v.x * s, v.y * s); } -Vector2 operator*(Vector2::Arg v1, Vector2::Arg v2) { +Vector2 operator*(Vector2::Arg v1, Vector2::Arg v2) +{ return Vector2(v1.x * v2.x, v1.y * v2.y); } -Vector2 operator/(Vector2::Arg v, float s) { +Vector2 operator/(Vector2::Arg v, float s) +{ return Vector2(v.x / s, v.y / s); } -Vector2 lerp(Vector2::Arg v1, Vector2::Arg v2, float t) { +Vector2 lerp(Vector2::Arg v1, Vector2::Arg v2, float t) +{ const float s = 1.0f - t; return Vector2(v1.x * s + t * v2.x, v1.y * s + t * v2.y); } -float dot(Vector2::Arg a, Vector2::Arg b) { +float dot(Vector2::Arg a, Vector2::Arg b) +{ return a.x * b.x + a.y * b.y; } -float lengthSquared(Vector2::Arg v) { +float lengthSquared(Vector2::Arg v) +{ return v.x * v.x + v.y * v.y; } -float length(Vector2::Arg v) { +float length(Vector2::Arg v) +{ return sqrtf(lengthSquared(v)); } -float distance(Vector2::Arg a, Vector2::Arg b) { +float distance(Vector2::Arg a, Vector2::Arg b) +{ return length(a - b); } -bool isNormalized(Vector2::Arg v, float epsilon = NV_NORMAL_EPSILON) { +bool isNormalized(Vector2::Arg v, float epsilon = NV_NORMAL_EPSILON) +{ return equal(length(v), 1, epsilon); } -Vector2 normalize(Vector2::Arg v, float epsilon = NV_EPSILON) { +Vector2 normalize(Vector2::Arg v, float epsilon = NV_EPSILON) +{ float l = length(v); xaDebugAssert(!isZero(l, epsilon)); #ifdef NDEBUG @@ -328,7 +360,8 @@ Vector2 normalize(Vector2::Arg v, float epsilon = NV_EPSILON) { return n; } -Vector2 normalizeSafe(Vector2::Arg v, Vector2::Arg fallback, float epsilon = NV_EPSILON) { +Vector2 normalizeSafe(Vector2::Arg v, Vector2::Arg fallback, float epsilon = NV_EPSILON) +{ float l = length(v); if (isZero(l, epsilon)) { return fallback; @@ -336,23 +369,28 @@ Vector2 normalizeSafe(Vector2::Arg v, Vector2::Arg fallback, float epsilon = NV_ return v * (1.0f / l); } -bool equal(Vector2::Arg v1, Vector2::Arg v2, float epsilon = NV_EPSILON) { +bool equal(Vector2::Arg v1, Vector2::Arg v2, float epsilon = NV_EPSILON) +{ return equal(v1.x, v2.x, epsilon) && equal(v1.y, v2.y, epsilon); } -Vector2 max(Vector2::Arg a, Vector2::Arg b) { +Vector2 max(Vector2::Arg a, Vector2::Arg b) +{ return Vector2(std::max(a.x, b.x), std::max(a.y, b.y)); } -bool isFinite(Vector2::Arg v) { +bool isFinite(Vector2::Arg v) +{ return std::isfinite(v.x) && std::isfinite(v.y); } // Note, this is the area scaled by 2! -float triangleArea(Vector2::Arg v0, Vector2::Arg v1) { +float triangleArea(Vector2::Arg v0, Vector2::Arg v1) +{ return (v0.x * v1.y - v0.y * v1.x); // * 0.5f; } -float triangleArea(Vector2::Arg a, Vector2::Arg b, Vector2::Arg c) { +float triangleArea(Vector2::Arg a, Vector2::Arg b, Vector2::Arg c) +{ // IC: While it may be appealing to use the following expression: //return (c.x * a.y + a.x * b.y + b.x * c.y - b.x * a.y - c.x * b.y - a.x * c.y); // * 0.5f; // That's actually a terrible idea. Small triangles far from the origin can end up producing fairly large floating point @@ -364,105 +402,109 @@ float triangleArea(Vector2::Arg a, Vector2::Arg b, Vector2::Arg c) { return triangleArea(a - c, b - c); } -float triangleArea2(Vector2::Arg v1, Vector2::Arg v2, Vector2::Arg v3) { +float triangleArea2(Vector2::Arg v1, Vector2::Arg v2, Vector2::Arg v3) +{ return 0.5f * (v3.x * v1.y + v1.x * v2.y + v2.x * v3.y - v2.x * v1.y - v3.x * v2.y - v1.x * v3.y); } -static uint32_t hash(const Vector2 &v, uint32_t h) { +static uint32_t hash(const Vector2 &v, uint32_t h) +{ return sdbmFloatHash(v.component, 2, h); } -class Vector3 { +class Vector3 +{ public: typedef Vector3 const &Arg; Vector3() {} - explicit Vector3(float f) : - x(f), - y(f), - z(f) {} - Vector3(float x, float y, float z) : - x(x), - y(y), - z(z) {} - Vector3(Vector2::Arg v, float z) : - x(v.x), - y(v.y), - z(z) {} - Vector3(Vector3::Arg v) : - x(v.x), - y(v.y), - z(v.z) {} - - const Vector3 &operator=(Vector3::Arg v) { + explicit Vector3(float f) : x(f), y(f), z(f) {} + Vector3(float x, float y, float z) : x(x), y(y), z(z) {} + Vector3(Vector2::Arg v, float z) : x(v.x), y(v.y), z(z) {} + Vector3(Vector3::Arg v) : x(v.x), y(v.y), z(v.z) {} + + const Vector3 &operator=(Vector3::Arg v) + { x = v.x; y = v.y; z = v.z; return *this; } - Vector2 xy() const { + Vector2 xy() const + { return Vector2(x, y); } const float *ptr() const { return &x; } - void set(float _x, float _y, float _z) { + void set(float _x, float _y, float _z) + { x = _x; y = _y; z = _z; } - Vector3 operator-() const { + Vector3 operator-() const + { return Vector3(-x, -y, -z); } - void operator+=(Vector3::Arg v) { + void operator+=(Vector3::Arg v) + { x += v.x; y += v.y; z += v.z; } - void operator-=(Vector3::Arg v) { + void operator-=(Vector3::Arg v) + { x -= v.x; y -= v.y; z -= v.z; } - void operator*=(float s) { + void operator*=(float s) + { x *= s; y *= s; z *= s; } - void operator/=(float s) { + void operator/=(float s) + { float is = 1.0f / s; x *= is; y *= is; z *= is; } - void operator*=(Vector3::Arg v) { + void operator*=(Vector3::Arg v) + { x *= v.x; y *= v.y; z *= v.z; } - void operator/=(Vector3::Arg v) { + void operator/=(Vector3::Arg v) + { x /= v.x; y /= v.y; z /= v.z; } - friend bool operator==(Vector3::Arg a, Vector3::Arg b) { + friend bool operator==(Vector3::Arg a, Vector3::Arg b) + { return a.x == b.x && a.y == b.y && a.z == b.z; } - friend bool operator!=(Vector3::Arg a, Vector3::Arg b) { + friend bool operator!=(Vector3::Arg a, Vector3::Arg b) + { return a.x != b.x || a.y != b.y || a.z != b.z; } - union { + union + { #ifdef _MSC_VER #pragma warning(push) #pragma warning(disable : 4201) @@ -479,85 +521,106 @@ public: }; }; -Vector3 add(Vector3::Arg a, Vector3::Arg b) { +Vector3 add(Vector3::Arg a, Vector3::Arg b) +{ return Vector3(a.x + b.x, a.y + b.y, a.z + b.z); } -Vector3 add(Vector3::Arg a, float b) { +Vector3 add(Vector3::Arg a, float b) +{ return Vector3(a.x + b, a.y + b, a.z + b); } -Vector3 operator+(Vector3::Arg a, Vector3::Arg b) { +Vector3 operator+(Vector3::Arg a, Vector3::Arg b) +{ return add(a, b); } -Vector3 operator+(Vector3::Arg a, float b) { +Vector3 operator+(Vector3::Arg a, float b) +{ return add(a, b); } -Vector3 sub(Vector3::Arg a, Vector3::Arg b) { +Vector3 sub(Vector3::Arg a, Vector3::Arg b) +{ return Vector3(a.x - b.x, a.y - b.y, a.z - b.z); } -Vector3 sub(Vector3::Arg a, float b) { +Vector3 sub(Vector3::Arg a, float b) +{ return Vector3(a.x - b, a.y - b, a.z - b); } -Vector3 operator-(Vector3::Arg a, Vector3::Arg b) { +Vector3 operator-(Vector3::Arg a, Vector3::Arg b) +{ return sub(a, b); } -Vector3 operator-(Vector3::Arg a, float b) { +Vector3 operator-(Vector3::Arg a, float b) +{ return sub(a, b); } -Vector3 cross(Vector3::Arg a, Vector3::Arg b) { +Vector3 cross(Vector3::Arg a, Vector3::Arg b) +{ return Vector3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x); } -Vector3 operator*(Vector3::Arg v, float s) { +Vector3 operator*(Vector3::Arg v, float s) +{ return Vector3(v.x * s, v.y * s, v.z * s); } -Vector3 operator*(float s, Vector3::Arg v) { +Vector3 operator*(float s, Vector3::Arg v) +{ return Vector3(v.x * s, v.y * s, v.z * s); } -Vector3 operator*(Vector3::Arg v, Vector3::Arg s) { +Vector3 operator*(Vector3::Arg v, Vector3::Arg s) +{ return Vector3(v.x * s.x, v.y * s.y, v.z * s.z); } -Vector3 operator/(Vector3::Arg v, float s) { +Vector3 operator/(Vector3::Arg v, float s) +{ return v * (1.0f / s); } -Vector3 lerp(Vector3::Arg v1, Vector3::Arg v2, float t) { +Vector3 lerp(Vector3::Arg v1, Vector3::Arg v2, float t) +{ const float s = 1.0f - t; return Vector3(v1.x * s + t * v2.x, v1.y * s + t * v2.y, v1.z * s + t * v2.z); } -float dot(Vector3::Arg a, Vector3::Arg b) { +float dot(Vector3::Arg a, Vector3::Arg b) +{ return a.x * b.x + a.y * b.y + a.z * b.z; } -float lengthSquared(Vector3::Arg v) { +float lengthSquared(Vector3::Arg v) +{ return v.x * v.x + v.y * v.y + v.z * v.z; } -float length(Vector3::Arg v) { +float length(Vector3::Arg v) +{ return sqrtf(lengthSquared(v)); } -float distance(Vector3::Arg a, Vector3::Arg b) { +float distance(Vector3::Arg a, Vector3::Arg b) +{ return length(a - b); } -float distanceSquared(Vector3::Arg a, Vector3::Arg b) { +float distanceSquared(Vector3::Arg a, Vector3::Arg b) +{ return lengthSquared(a - b); } -bool isNormalized(Vector3::Arg v, float epsilon = NV_NORMAL_EPSILON) { +bool isNormalized(Vector3::Arg v, float epsilon = NV_NORMAL_EPSILON) +{ return equal(length(v), 1, epsilon); } -Vector3 normalize(Vector3::Arg v, float epsilon = NV_EPSILON) { +Vector3 normalize(Vector3::Arg v, float epsilon = NV_EPSILON) +{ float l = length(v); xaDebugAssert(!isZero(l, epsilon)); #ifdef NDEBUG @@ -568,7 +631,8 @@ Vector3 normalize(Vector3::Arg v, float epsilon = NV_EPSILON) { return n; } -Vector3 normalizeSafe(Vector3::Arg v, Vector3::Arg fallback, float epsilon = NV_EPSILON) { +Vector3 normalizeSafe(Vector3::Arg v, Vector3::Arg fallback, float epsilon = NV_EPSILON) +{ float l = length(v); if (isZero(l, epsilon)) { return fallback; @@ -576,49 +640,56 @@ Vector3 normalizeSafe(Vector3::Arg v, Vector3::Arg fallback, float epsilon = NV_ return v * (1.0f / l); } -bool equal(Vector3::Arg v1, Vector3::Arg v2, float epsilon = NV_EPSILON) { +bool equal(Vector3::Arg v1, Vector3::Arg v2, float epsilon = NV_EPSILON) +{ return equal(v1.x, v2.x, epsilon) && equal(v1.y, v2.y, epsilon) && equal(v1.z, v2.z, epsilon); } -Vector3 min(Vector3::Arg a, Vector3::Arg b) { +Vector3 min(Vector3::Arg a, Vector3::Arg b) +{ return Vector3(std::min(a.x, b.x), std::min(a.y, b.y), std::min(a.z, b.z)); } -Vector3 max(Vector3::Arg a, Vector3::Arg b) { +Vector3 max(Vector3::Arg a, Vector3::Arg b) +{ return Vector3(std::max(a.x, b.x), std::max(a.y, b.y), std::max(a.z, b.z)); } -Vector3 clamp(Vector3::Arg v, float min, float max) { +Vector3 clamp(Vector3::Arg v, float min, float max) +{ return Vector3(clamp(v.x, min, max), clamp(v.y, min, max), clamp(v.z, min, max)); } -Vector3 saturate(Vector3::Arg v) { +Vector3 saturate(Vector3::Arg v) +{ return Vector3(saturate(v.x), saturate(v.y), saturate(v.z)); } -Vector3 floor(Vector3::Arg v) { +Vector3 floor(Vector3::Arg v) +{ return Vector3(floorf(v.x), floorf(v.y), floorf(v.z)); } -bool isFinite(Vector3::Arg v) { +bool isFinite(Vector3::Arg v) +{ return std::isfinite(v.x) && std::isfinite(v.y) && std::isfinite(v.z); } -static uint32_t hash(const Vector3 &v, uint32_t h) { +static uint32_t hash(const Vector3 &v, uint32_t h) +{ return sdbmFloatHash(v.component, 3, h); } /// Basis class to compute tangent space basis, ortogonalizations and to /// transform vectors from one space to another. -class Basis { +class Basis +{ public: /// Create a null basis. - Basis() : - tangent(0, 0, 0), - bitangent(0, 0, 0), - normal(0, 0, 0) {} + Basis() : tangent(0, 0, 0), bitangent(0, 0, 0), normal(0, 0, 0) {} - void buildFrameForDirection(Vector3::Arg d, float angle = 0) { + void buildFrameForDirection(Vector3::Arg d, float angle = 0) + { xaAssert(isNormalized(d)); normal = d; // Choose minimum axis. @@ -649,65 +720,76 @@ public: }; // Simple bit array. -class BitArray { +class BitArray +{ public: - BitArray() : - m_size(0) {} - BitArray(uint32_t sz) { + BitArray() : m_size(0) {} + BitArray(uint32_t sz) + { resize(sz); } - uint32_t size() const { + uint32_t size() const + { return m_size; } - void clear() { + void clear() + { resize(0); } - void resize(uint32_t new_size) { + void resize(uint32_t new_size) + { m_size = new_size; - m_wordArray.resize((m_size + 31) >> 5); + m_wordArray.resize( (m_size + 31) >> 5 ); } /// Get bit. - bool bitAt(uint32_t b) const { - xaDebugAssert(b < m_size); + bool bitAt(uint32_t b) const + { + xaDebugAssert( b < m_size ); return (m_wordArray[b >> 5] & (1 << (b & 31))) != 0; } // Set a bit. - void setBitAt(uint32_t idx) { + void setBitAt(uint32_t idx) + { xaDebugAssert(idx < m_size); - m_wordArray[idx >> 5] |= (1 << (idx & 31)); + m_wordArray[idx >> 5] |= (1 << (idx & 31)); } // Toggle a bit. - void toggleBitAt(uint32_t idx) { + void toggleBitAt(uint32_t idx) + { xaDebugAssert(idx < m_size); m_wordArray[idx >> 5] ^= (1 << (idx & 31)); } // Set a bit to the given value. @@ Rename modifyBitAt? - void setBitAt(uint32_t idx, bool b) { + void setBitAt(uint32_t idx, bool b) + { xaDebugAssert(idx < m_size); m_wordArray[idx >> 5] = setBits(m_wordArray[idx >> 5], 1 << (idx & 31), b); xaDebugAssert(bitAt(idx) == b); } // Clear all the bits. - void clearAll() { - memset(m_wordArray.data(), 0, m_wordArray.size() * sizeof(uint32_t)); + void clearAll() + { + memset(m_wordArray.data(), 0, m_wordArray.size() * sizeof(uint32_t )); } // Set all the bits. - void setAll() { - memset(m_wordArray.data(), 0xFF, m_wordArray.size() * sizeof(uint32_t)); + void setAll() + { + memset(m_wordArray.data(), 0xFF, m_wordArray.size() * sizeof(uint32_t )); } private: // See "Conditionally set or clear bits without branching" at http://graphics.stanford.edu/~seander/bithacks.html - uint32_t setBits(uint32_t w, uint32_t m, bool b) { + uint32_t setBits(uint32_t w, uint32_t m, bool b) + { return (w & ~m) | (-int(b) & m); } @@ -719,29 +801,26 @@ private: }; /// Bit map. This should probably be called BitImage. -class BitMap { +class BitMap +{ public: - BitMap() : - m_width(0), - m_height(0) {} - BitMap(uint32_t w, uint32_t h) : - m_width(w), - m_height(h), - m_bitArray(w * h) {} - - uint32_t width() const { + BitMap() : m_width(0), m_height(0) {} + BitMap(uint32_t w, uint32_t h) : m_width(w), m_height(h), m_bitArray(w * h) {} + + uint32_t width() const + { return m_width; } - uint32_t height() const { + uint32_t height() const + { return m_height; } - void resize(uint32_t w, uint32_t h, bool initValue) { + void resize(uint32_t w, uint32_t h, bool initValue) + { BitArray tmp(w * h); - if (initValue) - tmp.setAll(); - else - tmp.clearAll(); + if (initValue) tmp.setAll(); + else tmp.clearAll(); // @@ Copying one bit at a time. This could be much faster. for (uint32_t y = 0; y < m_height; y++) { for (uint32_t x = 0; x < m_width; x++) { @@ -754,17 +833,20 @@ public: m_height = h; } - bool bitAt(uint32_t x, uint32_t y) const { + bool bitAt(uint32_t x, uint32_t y) const + { xaDebugAssert(x < m_width && y < m_height); return m_bitArray.bitAt(y * m_width + x); } - void setBitAt(uint32_t x, uint32_t y) { + void setBitAt(uint32_t x, uint32_t y) + { xaDebugAssert(x < m_width && y < m_height); m_bitArray.setBitAt(y * m_width + x); } - void clearAll() { + void clearAll() + { m_bitArray.clearAll(); } @@ -775,39 +857,41 @@ private: }; // Axis Aligned Bounding Box. -class Box { +class Box +{ public: Box() {} - Box(const Box &b) : - minCorner(b.minCorner), - maxCorner(b.maxCorner) {} - Box(const Vector3 &mins, const Vector3 &maxs) : - minCorner(mins), - maxCorner(maxs) {} - - operator const float *() const { + Box(const Box &b) : minCorner(b.minCorner), maxCorner(b.maxCorner) {} + Box(const Vector3 &mins, const Vector3 &maxs) : minCorner(mins), maxCorner(maxs) {} + + operator const float *() const + { return reinterpret_cast<const float *>(this); } // Clear the bounds. - void clearBounds() { + void clearBounds() + { minCorner.set(FLT_MAX, FLT_MAX, FLT_MAX); maxCorner.set(-FLT_MAX, -FLT_MAX, -FLT_MAX); } // Return extents of the box. - Vector3 extents() const { + Vector3 extents() const + { return (maxCorner - minCorner) * 0.5f; } // Add a point to this box. - void addPointToBounds(const Vector3 &p) { + void addPointToBounds(const Vector3 &p) + { minCorner = min(minCorner, p); maxCorner = max(maxCorner, p); } // Get the volume of the box. - float volume() const { + float volume() const + { Vector3 d = extents(); return 8.0f * (d.x * d.y * d.z); } @@ -816,9 +900,11 @@ public: Vector3 maxCorner; }; -class Fit { +class Fit +{ public: - static Vector3 computeCentroid(int n, const Vector3 *__restrict points) { + static Vector3 computeCentroid(int n, const Vector3 *__restrict points) + { Vector3 centroid(0.0f); for (int i = 0; i < n; i++) { centroid += points[i]; @@ -827,7 +913,8 @@ public: return centroid; } - static Vector3 computeCovariance(int n, const Vector3 *__restrict points, float *__restrict covariance) { + static Vector3 computeCovariance(int n, const Vector3 *__restrict points, float *__restrict covariance) + { // compute the centroid Vector3 centroid = computeCentroid(n, points); // compute covariance matrix @@ -846,7 +933,8 @@ public: return centroid; } - static bool isPlanar(int n, const Vector3 *points, float epsilon = NV_EPSILON) { + static bool isPlanar(int n, const Vector3 *points, float epsilon = NV_EPSILON) + { // compute the centroid and covariance float matrix[6]; computeCovariance(n, points, matrix); @@ -861,7 +949,8 @@ public: // Tridiagonal solver from Charles Bloom. // Householder transforms followed by QL decomposition. // Seems to be based on the code from Numerical Recipes in C. - static bool eigenSolveSymmetric3(const float matrix[6], float eigenValues[3], Vector3 eigenVectors[3]) { + static bool eigenSolveSymmetric3(const float matrix[6], float eigenValues[3], Vector3 eigenVectors[3]) + { xaDebugAssert(matrix != NULL && eigenValues != NULL && eigenVectors != NULL); float subd[3]; float diag[3]; @@ -886,7 +975,7 @@ public: // eigenvectors are the columns; make them the rows : for (int i = 0; i < 3; i++) { for (int j = 0; j < 3; j++) { - eigenVectors[j].component[i] = (float)work[i][j]; + eigenVectors[j].component[i] = (float) work[i][j]; } } // shuffle to sort by singular value : @@ -908,7 +997,8 @@ public: } private: - static void EigenSolver3_Tridiagonal(float mat[3][3], float *diag, float *subd) { + static void EigenSolver3_Tridiagonal(float mat[3][3], float *diag, float *subd) + { // Householder reduction T = Q^t M Q // Input: // mat, symmetric 3x3 matrix M @@ -960,7 +1050,8 @@ private: } } - static bool EigenSolver3_QLAlgorithm(float mat[3][3], float *diag, float *subd) { + static bool EigenSolver3_QLAlgorithm(float mat[3][3], float *diag, float *subd) + { // QL iteration with implicit shifting to reduce matrix from tridiagonal // to diagonal const int maxiter = 32; @@ -970,21 +1061,21 @@ private: int m; for (m = ell; m <= 1; m++) { float dd = fabsf(diag[m]) + fabsf(diag[m + 1]); - if (fabsf(subd[m]) + dd == dd) + if ( fabsf(subd[m]) + dd == dd ) break; } - if (m == ell) + if ( m == ell ) break; float g = (diag[ell + 1] - diag[ell]) / (2 * subd[ell]); float r = sqrtf(g * g + 1); - if (g < 0) + if ( g < 0 ) g = diag[m] - diag[ell] + subd[ell] / (g - r); else g = diag[m] - diag[ell] + subd[ell] / (g + r); float s = 1, c = 1, p = 0; for (int i = m - 1; i >= ell; i--) { float f = s * subd[i], b = c * subd[i]; - if (fabsf(f) >= fabsf(g)) { + if ( fabsf(f) >= fabsf(g) ) { c = g / f; r = sqrtf(c * c + 1); subd[i + 1] = f * r; @@ -1010,7 +1101,7 @@ private: subd[ell] = g; subd[m] = 0; } - if (iter == maxiter) + if ( iter == maxiter ) // should not get here under normal circumstances return false; } @@ -1019,30 +1110,33 @@ private: }; /// Fixed size vector class. -class FullVector { +class FullVector +{ public: FullVector(uint32_t dim) { m_array.resize(dim); } - FullVector(const FullVector &v) : - m_array(v.m_array) {} + FullVector(const FullVector &v) : m_array(v.m_array) {} - const FullVector &operator=(const FullVector &v) { + const FullVector &operator=(const FullVector &v) + { xaAssert(dimension() == v.dimension()); m_array = v.m_array; return *this; } uint32_t dimension() const { return m_array.size(); } - const float &operator[](uint32_t index) const { return m_array[index]; } - float &operator[](uint32_t index) { return m_array[index]; } + const float &operator[]( uint32_t index ) const { return m_array[index]; } + float &operator[] ( uint32_t index ) { return m_array[index]; } - void fill(float f) { + void fill(float f) + { const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { m_array[i] = f; } } - void operator+=(const FullVector &v) { + void operator+=(const FullVector &v) + { xaDebugAssert(dimension() == v.dimension()); const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { @@ -1050,7 +1144,8 @@ public: } } - void operator-=(const FullVector &v) { + void operator-=(const FullVector &v) + { xaDebugAssert(dimension() == v.dimension()); const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { @@ -1058,7 +1153,8 @@ public: } } - void operator*=(const FullVector &v) { + void operator*=(const FullVector &v) + { xaDebugAssert(dimension() == v.dimension()); const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { @@ -1066,21 +1162,24 @@ public: } } - void operator+=(float f) { + void operator+=(float f) + { const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { m_array[i] += f; } } - void operator-=(float f) { + void operator-=(float f) + { const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { m_array[i] -= f; } } - void operator*=(float f) { + void operator*=(float f) + { const uint32_t dim = dimension(); for (uint32_t i = 0; i < dim; i++) { m_array[i] *= f; @@ -1095,66 +1194,70 @@ namespace halfedge { class Face; class Vertex; -class Edge { +class Edge +{ public: uint32_t id; Edge *next; - Edge *prev; // This is not strictly half-edge, but makes algorithms easier and faster. + Edge *prev; // This is not strictly half-edge, but makes algorithms easier and faster. Edge *pair; Vertex *vertex; Face *face; // Default constructor. - Edge(uint32_t id) : - id(id), - next(NULL), - prev(NULL), - pair(NULL), - vertex(NULL), - face(NULL) {} + Edge(uint32_t id) : id(id), next(NULL), prev(NULL), pair(NULL), vertex(NULL), face(NULL) {} // Vertex queries. - const Vertex *from() const { + const Vertex *from() const + { return vertex; } - Vertex *from() { + Vertex *from() + { return vertex; } - const Vertex *to() const { - return pair->vertex; // This used to be 'next->vertex', but that changed often when the connectivity of the mesh changes. + const Vertex *to() const + { + return pair->vertex; // This used to be 'next->vertex', but that changed often when the connectivity of the mesh changes. } - Vertex *to() { + Vertex *to() + { return pair->vertex; } // Edge queries. - void setNext(Edge *e) { + void setNext(Edge *e) + { next = e; if (e != NULL) e->prev = this; } - void setPrev(Edge *e) { + void setPrev(Edge *e) + { prev = e; if (e != NULL) e->next = this; } // @@ It would be more simple to only check m_pair == NULL // Face queries. - bool isBoundary() const { + bool isBoundary() const + { return !(face && pair->face); } // @@ This is not exactly accurate, we should compare the texture coordinates... - bool isSeam() const { + bool isSeam() const + { return vertex != pair->next->vertex || next->vertex != pair->vertex; } bool isNormalSeam() const; bool isTextureSeam() const; - bool isValid() const { + bool isValid() const + { // null face is OK. if (next == NULL || prev == NULL || pair == NULL || vertex == NULL) return false; if (next->prev != this) return false; @@ -1169,10 +1272,10 @@ public: float angle() const; }; -class Vertex { +class Vertex +{ public: uint32_t id; - uint32_t original_id; Edge *edge; Vertex *next; Vertex *prev; @@ -1180,36 +1283,35 @@ public: Vector3 nor; Vector2 tex; - Vertex(uint32_t id) : - id(id), - original_id(id), - edge(NULL), - pos(0.0f), - nor(0.0f), - tex(0.0f) { + Vertex(uint32_t id) : id(id), edge(NULL), pos(0.0f), nor(0.0f), tex(0.0f) + { next = this; prev = this; } // Set first edge of all colocals. - void setEdge(Edge *e) { + void setEdge(Edge *e) + { for (VertexIterator it(colocals()); !it.isDone(); it.advance()) { it.current()->edge = e; } } // Update position of all colocals. - void setPos(const Vector3 &p) { + void setPos(const Vector3 &p) + { for (VertexIterator it(colocals()); !it.isDone(); it.advance()) { it.current()->pos = p; } } - bool isFirstColocal() const { + bool isFirstColocal() const + { return firstColocal() == this; } - const Vertex *firstColocal() const { + const Vertex *firstColocal() const + { uint32_t firstId = id; const Vertex *vertex = this; for (ConstVertexIterator it(colocals()); !it.isDone(); it.advance()) { @@ -1221,7 +1323,8 @@ public: return vertex; } - Vertex *firstColocal() { + Vertex *firstColocal() + { Vertex *vertex = this; uint32_t firstId = id; for (VertexIterator it(colocals()); !it.isDone(); it.advance()) { @@ -1233,7 +1336,8 @@ public: return vertex; } - bool isColocal(const Vertex *v) const { + bool isColocal(const Vertex *v) const + { if (this == v) return true; if (pos != v->pos) return false; for (ConstVertexIterator it(colocals()); !it.isDone(); it.advance()) { @@ -1244,13 +1348,15 @@ public: return false; } - void linkColocal(Vertex *v) { + void linkColocal(Vertex *v) + { next->prev = v; v->next = next; next = v; v->prev = this; } - void unlinkColocal() { + void unlinkColocal() + { next->prev = prev; prev->next = next; next = this; @@ -1258,7 +1364,8 @@ public: } // @@ Note: This only works if linkBoundary has been called. - bool isBoundary() const { + bool isBoundary() const + { return (edge && !edge->face); } @@ -1266,23 +1373,25 @@ public: class EdgeIterator //: public Iterator<Edge *> { public: - EdgeIterator(Edge *e) : - m_end(NULL), - m_current(e) {} + EdgeIterator(Edge *e) : m_end(NULL), m_current(e) { } - virtual void advance() { + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->pair->next; //m_current = m_current->prev->pair; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual Edge *current() const { + virtual Edge *current() const + { return m_current; } - Vertex *vertex() const { + Vertex *vertex() const + { return m_current->vertex; } @@ -1291,10 +1400,12 @@ public: Edge *m_current; }; - EdgeIterator edges() { + EdgeIterator edges() + { return EdgeIterator(edge); } - EdgeIterator edges(Edge *e) { + EdgeIterator edges(Edge *e) + { return EdgeIterator(e); } @@ -1302,26 +1413,26 @@ public: class ConstEdgeIterator //: public Iterator<Edge *> { public: - ConstEdgeIterator(const Edge *e) : - m_end(NULL), - m_current(e) {} - ConstEdgeIterator(EdgeIterator it) : - m_end(NULL), - m_current(it.current()) {} - - virtual void advance() { + ConstEdgeIterator(const Edge *e) : m_end(NULL), m_current(e) { } + ConstEdgeIterator(EdgeIterator it) : m_end(NULL), m_current(it.current()) { } + + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->pair->next; //m_current = m_current->prev->pair; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual const Edge *current() const { + virtual const Edge *current() const + { return m_current; } - const Vertex *vertex() const { + const Vertex *vertex() const + { return m_current->to(); } @@ -1330,10 +1441,12 @@ public: const Edge *m_current; }; - ConstEdgeIterator edges() const { + ConstEdgeIterator edges() const + { return ConstEdgeIterator(edge); } - ConstEdgeIterator edges(const Edge *e) const { + ConstEdgeIterator edges(const Edge *e) const + { return ConstEdgeIterator(e); } @@ -1341,19 +1454,20 @@ public: class VertexIterator //: public Iterator<Edge *> { public: - VertexIterator(Vertex *v) : - m_end(NULL), - m_current(v) {} + VertexIterator(Vertex *v) : m_end(NULL), m_current(v) { } - virtual void advance() { + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->next; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual Vertex *current() const { + virtual Vertex *current() const + { return m_current; } @@ -1362,7 +1476,8 @@ public: Vertex *m_current; }; - VertexIterator colocals() { + VertexIterator colocals() + { return VertexIterator(this); } @@ -1370,19 +1485,20 @@ public: class ConstVertexIterator //: public Iterator<Edge *> { public: - ConstVertexIterator(const Vertex *v) : - m_end(NULL), - m_current(v) {} + ConstVertexIterator(const Vertex *v) : m_end(NULL), m_current(v) { } - virtual void advance() { + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->next; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual const Vertex *current() const { + virtual const Vertex *current() const + { return m_current; } @@ -1391,24 +1507,29 @@ public: const Vertex *m_current; }; - ConstVertexIterator colocals() const { + ConstVertexIterator colocals() const + { return ConstVertexIterator(this); } }; -bool Edge::isNormalSeam() const { +bool Edge::isNormalSeam() const +{ return (vertex->nor != pair->next->vertex->nor || next->vertex->nor != pair->vertex->nor); } -bool Edge::isTextureSeam() const { +bool Edge::isTextureSeam() const +{ return (vertex->tex != pair->next->vertex->tex || next->vertex->tex != pair->vertex->tex); } -float Edge::length() const { +float Edge::length() const +{ return internal::length(to()->pos - from()->pos); } -float Edge::angle() const { +float Edge::angle() const +{ Vector3 p = vertex->pos; Vector3 a = prev->vertex->pos; Vector3 b = next->vertex->pos; @@ -1417,20 +1538,18 @@ float Edge::angle() const { return acosf(dot(v0, v1) / (internal::length(v0) * internal::length(v1))); } -class Face { +class Face +{ public: uint32_t id; uint16_t group; uint16_t material; Edge *edge; - Face(uint32_t id) : - id(id), - group(uint16_t(~0)), - material(uint16_t(~0)), - edge(NULL) {} + Face(uint32_t id) : id(id), group(uint16_t(~0)), material(uint16_t(~0)), edge(NULL) {} - float area() const { + float area() const + { float area = 0; const Vector3 &v0 = edge->from()->pos; for (ConstEdgeIterator it(edges(edge->next)); it.current() != edge->prev; it.advance()) { @@ -1442,7 +1561,8 @@ public: return area * 0.5f; } - float parametricArea() const { + float parametricArea() const + { float area = 0; const Vector2 &v0 = edge->from()->tex; for (ConstEdgeIterator it(edges(edge->next)); it.current() != edge->prev; it.advance()) { @@ -1454,7 +1574,8 @@ public: return area * 0.5f; } - Vector3 normal() const { + Vector3 normal() const + { Vector3 n(0); const Vertex *vertex0 = NULL; for (ConstEdgeIterator it(edges()); !it.isDone(); it.advance()) { @@ -1476,7 +1597,8 @@ public: return normalizeSafe(n, Vector3(0, 0, 1), 0.0f); } - Vector3 centroid() const { + Vector3 centroid() const + { Vector3 sum(0.0f); uint32_t count = 0; for (ConstEdgeIterator it(edges()); !it.isDone(); it.advance()) { @@ -1488,7 +1610,8 @@ public: } // Unnormalized face normal assuming it's a triangle. - Vector3 triangleNormal() const { + Vector3 triangleNormal() const + { Vector3 p0 = edge->vertex->pos; Vector3 p1 = edge->next->vertex->pos; Vector3 p2 = edge->next->next->vertex->pos; @@ -1497,7 +1620,8 @@ public: return normalizeSafe(cross(e0, e1), Vector3(0), 0.0f); } - Vector3 triangleNormalAreaScaled() const { + Vector3 triangleNormalAreaScaled() const + { Vector3 p0 = edge->vertex->pos; Vector3 p1 = edge->next->vertex->pos; Vector3 p2 = edge->next->next->vertex->pos; @@ -1508,7 +1632,8 @@ public: // Average of the edge midpoints weighted by the edge length. // I want a point inside the triangle, but closer to the cirumcenter. - Vector3 triangleCenter() const { + Vector3 triangleCenter() const + { Vector3 p0 = edge->vertex->pos; Vector3 p1 = edge->next->vertex->pos; Vector3 p2 = edge->next->next->vertex->pos; @@ -1521,7 +1646,8 @@ public: return m0 + m1 + m2; } - bool isValid() const { + bool isValid() const + { uint32_t count = 0; for (ConstEdgeIterator it(edges()); !it.isDone(); it.advance()) { const Edge *e = it.current(); @@ -1534,14 +1660,16 @@ public: return true; } - bool contains(const Edge *e) const { + bool contains(const Edge *e) const + { for (ConstEdgeIterator it(edges()); !it.isDone(); it.advance()) { if (it.current() == e) return true; } return false; } - uint32_t edgeCount() const { + uint32_t edgeCount() const + { uint32_t count = 0; for (ConstEdgeIterator it(edges()); !it.isDone(); it.advance()) { ++count; @@ -1553,22 +1681,24 @@ public: class EdgeIterator //: public Iterator<Edge *> { public: - EdgeIterator(Edge *e) : - m_end(NULL), - m_current(e) {} + EdgeIterator(Edge *e) : m_end(NULL), m_current(e) { } - virtual void advance() { + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->next; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual Edge *current() const { + virtual Edge *current() const + { return m_current; } - Vertex *vertex() const { + Vertex *vertex() const + { return m_current->vertex; } @@ -1577,10 +1707,12 @@ public: Edge *m_current; }; - EdgeIterator edges() { + EdgeIterator edges() + { return EdgeIterator(edge); } - EdgeIterator edges(Edge *e) { + EdgeIterator edges(Edge *e) + { xaDebugAssert(contains(e)); return EdgeIterator(e); } @@ -1589,25 +1721,25 @@ public: class ConstEdgeIterator //: public Iterator<const Edge *> { public: - ConstEdgeIterator(const Edge *e) : - m_end(NULL), - m_current(e) {} - ConstEdgeIterator(const EdgeIterator &it) : - m_end(NULL), - m_current(it.current()) {} - - virtual void advance() { + ConstEdgeIterator(const Edge *e) : m_end(NULL), m_current(e) { } + ConstEdgeIterator(const EdgeIterator &it) : m_end(NULL), m_current(it.current()) { } + + virtual void advance() + { if (m_end == NULL) m_end = m_current; m_current = m_current->next; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_end == m_current; } - virtual const Edge *current() const { + virtual const Edge *current() const + { return m_current; } - const Vertex *vertex() const { + const Vertex *vertex() const + { return m_current->vertex; } @@ -1616,22 +1748,25 @@ public: const Edge *m_current; }; - ConstEdgeIterator edges() const { + ConstEdgeIterator edges() const + { return ConstEdgeIterator(edge); } - ConstEdgeIterator edges(const Edge *e) const { + ConstEdgeIterator edges(const Edge *e) const + { xaDebugAssert(contains(e)); return ConstEdgeIterator(e); } }; /// Simple half edge mesh designed for dynamic mesh manipulation. -class Mesh { +class Mesh +{ public: - Mesh() : - m_colocalVertexCount(0) {} + Mesh() : m_colocalVertexCount(0) {} - Mesh(const Mesh *mesh) { + Mesh(const Mesh *mesh) + { // Copy mesh vertices. const uint32_t vertexCount = mesh->vertexCount(); m_vertexArray.resize(vertexCount); @@ -1659,11 +1794,13 @@ public: } } - ~Mesh() { + ~Mesh() + { clear(); } - void clear() { + void clear() + { for (size_t i = 0; i < m_vertexArray.size(); i++) delete m_vertexArray[i]; m_vertexArray.clear(); @@ -1676,7 +1813,8 @@ public: m_faceArray.clear(); } - Vertex *addVertex(const Vector3 &pos) { + Vertex *addVertex(const Vector3 &pos) + { xaDebugAssert(isFinite(pos)); Vertex *v = new Vertex(m_vertexArray.size()); v->pos = pos; @@ -1685,7 +1823,8 @@ public: } /// Link colocal vertices based on geometric location only. - void linkColocals() { + void linkColocals() + { xaPrint("--- Linking colocals:\n"); const uint32_t vertexCount = this->vertexCount(); std::unordered_map<Vector3, Vertex *, Hash<Vector3>, Equal<Vector3> > vertexMap; @@ -1704,7 +1843,8 @@ public: // @@ Remove duplicated vertices? or just leave them as colocals? } - void linkColocalsWithCanonicalMap(const std::vector<uint32_t> &canonicalMap) { + void linkColocalsWithCanonicalMap(const std::vector<uint32_t> &canonicalMap) + { xaPrint("--- Linking colocals:\n"); uint32_t vertexMapSize = 0; for (uint32_t i = 0; i < canonicalMap.size(); i++) { @@ -1728,13 +1868,15 @@ public: xaPrint("--- %d vertex positions.\n", m_colocalVertexCount); } - Face *addFace() { + Face *addFace() + { Face *f = new Face(m_faceArray.size()); m_faceArray.push_back(f); return f; } - Face *addFace(uint32_t v0, uint32_t v1, uint32_t v2) { + Face *addFace(uint32_t v0, uint32_t v1, uint32_t v2) + { uint32_t indexArray[3]; indexArray[0] = v0; indexArray[1] = v1; @@ -1742,63 +1884,8 @@ public: return addFace(indexArray, 3, 0, 3); } - Face *addUniqueFace(uint32_t v0, uint32_t v1, uint32_t v2) { - - int base_vertex = m_vertexArray.size(); - - uint32_t ids[3] = { v0, v1, v2 }; - - Vector3 base[3] = { - m_vertexArray[v0]->pos, - m_vertexArray[v1]->pos, - m_vertexArray[v2]->pos, - }; - - //make sure its not a degenerate - bool degenerate = distanceSquared(base[0], base[1]) < NV_EPSILON || distanceSquared(base[0], base[2]) < NV_EPSILON || distanceSquared(base[1], base[2]) < NV_EPSILON; - xaDebugAssert(!degenerate); - - float min_x = 0; - - for (int i = 0; i < 3; i++) { - if (i == 0 || m_vertexArray[v0]->pos.x < min_x) { - min_x = m_vertexArray[v0]->pos.x; - } - } - - float max_x = 0; - - for (int j = 0; j < m_vertexArray.size(); j++) { - if (j == 0 || m_vertexArray[j]->pos.x > max_x) { //vertex already exists - max_x = m_vertexArray[j]->pos.x; - } - } - - //separate from everything else, in x axis - for (int i = 0; i < 3; i++) { - - base[i].x -= min_x; - base[i].x += max_x + 10.0; - } - - for (int i = 0; i < 3; i++) { - Vertex *v = new Vertex(m_vertexArray.size()); - v->pos = base[i]; - v->nor = m_vertexArray[ids[i]]->nor, - v->tex = m_vertexArray[ids[i]]->tex, - - v->original_id = ids[i]; - m_vertexArray.push_back(v); - } - - uint32_t indexArray[3]; - indexArray[0] = base_vertex + 0; - indexArray[1] = base_vertex + 1; - indexArray[2] = base_vertex + 2; - return addFace(indexArray, 3, 0, 3); - } - - Face *addFace(uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3) { + Face *addFace(uint32_t v0, uint32_t v1, uint32_t v2, uint32_t v3) + { uint32_t indexArray[4]; indexArray[0] = v0; indexArray[1] = v1; @@ -1807,15 +1894,18 @@ public: return addFace(indexArray, 4, 0, 4); } - Face *addFace(const std::vector<uint32_t> &indexArray) { + Face *addFace(const std::vector<uint32_t> &indexArray) + { return addFace(indexArray, 0, indexArray.size()); } - Face *addFace(const std::vector<uint32_t> &indexArray, uint32_t first, uint32_t num) { + Face *addFace(const std::vector<uint32_t> &indexArray, uint32_t first, uint32_t num) + { return addFace(indexArray.data(), (uint32_t)indexArray.size(), first, num); } - Face *addFace(const uint32_t *indexArray, uint32_t indexCount, uint32_t first, uint32_t num) { + Face *addFace(const uint32_t *indexArray, uint32_t indexCount, uint32_t first, uint32_t num) + { xaDebugAssert(first < indexCount); xaDebugAssert(num <= indexCount - first); xaDebugAssert(num > 2); @@ -1830,10 +1920,8 @@ public: current = addEdge(indexArray[first + i], indexArray[first + i + 1]); xaAssert(current != NULL && current->face == NULL); current->face = f; - if (last != NULL) - last->setNext(current); - else - firstEdge = current; + if (last != NULL) last->setNext(current); + else firstEdge = current; last = current; } current = addEdge(indexArray[first + num - 1], indexArray[first]); @@ -1849,7 +1937,8 @@ public: // These functions disconnect the given element from the mesh and delete it. // @@ We must always disconnect edge pairs simultaneously. - void disconnect(Edge *edge) { + void disconnect(Edge *edge) + { xaDebugAssert(edge != NULL); // Remove from edge list. if ((edge->id & 1) == 0) { @@ -1905,13 +1994,15 @@ public: } } - void remove(Edge *edge) { + void remove(Edge *edge) + { xaDebugAssert(edge != NULL); disconnect(edge); delete edge; } - void remove(Vertex *vertex) { + void remove(Vertex *vertex) + { xaDebugAssert(vertex != NULL); // Remove from vertex list. m_vertexArray[vertex->id] = NULL; @@ -1929,7 +2020,8 @@ public: delete vertex; } - void remove(Face *face) { + void remove(Face *face) + { xaDebugAssert(face != NULL); // Remove from face list. m_faceArray[face->id] = NULL; @@ -1943,7 +2035,8 @@ public: } // Triangulate in place. - void triangulate() { + void triangulate() + { bool all_triangles = true; const uint32_t faceCount = m_faceArray.size(); for (uint32_t f = 0; f < faceCount; f++) { @@ -1984,7 +2077,8 @@ public: } /// Link boundary edges once the mesh has been created. - void linkBoundary() { + void linkBoundary() + { xaPrint("--- Linking boundaries:\n"); int num = 0; // Create boundary edges. @@ -2058,7 +2152,7 @@ public: if (t > 0.0f + NV_EPSILON && t < 1.0f - NV_EPSILON) { xaDebugAssert(equal(lerp(x1, x2, t), x0)); Vertex *splitVertex = splitBoundaryEdge(edge, t, x0); - vertex->linkColocal(splitVertex); // @@ Should we do this here? + vertex->linkColocal(splitVertex); // @@ Should we do this here? splitCount++; } } @@ -2071,59 +2165,70 @@ public: } // Vertices - uint32_t vertexCount() const { + uint32_t vertexCount() const + { return m_vertexArray.size(); } - const Vertex *vertexAt(int i) const { + const Vertex *vertexAt(int i) const + { return m_vertexArray[i]; } - Vertex *vertexAt(int i) { + Vertex *vertexAt(int i) + { return m_vertexArray[i]; } - uint32_t colocalVertexCount() const { + uint32_t colocalVertexCount() const + { return m_colocalVertexCount; } // Faces - uint32_t faceCount() const { + uint32_t faceCount() const + { return m_faceArray.size(); } - const Face *faceAt(int i) const { + const Face *faceAt(int i) const + { return m_faceArray[i]; } - Face *faceAt(int i) { + Face *faceAt(int i) + { return m_faceArray[i]; } // Edges - uint32_t edgeCount() const { + uint32_t edgeCount() const + { return m_edgeArray.size(); } - const Edge *edgeAt(int i) const { + const Edge *edgeAt(int i) const + { return m_edgeArray[i]; } - Edge *edgeAt(int i) { + Edge *edgeAt(int i) + { return m_edgeArray[i]; } class ConstVertexIterator; - class VertexIterator { + class VertexIterator + { friend class ConstVertexIterator; - public: - VertexIterator(Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} + VertexIterator(Mesh *mesh) : m_mesh(mesh), m_current(0) { } - virtual void advance() { + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->vertexCount(); } - virtual Vertex *current() const { + virtual Vertex *current() const + { return m_mesh->vertexAt(m_current); } @@ -2131,26 +2236,27 @@ public: halfedge::Mesh *m_mesh; uint32_t m_current; }; - VertexIterator vertices() { + VertexIterator vertices() + { return VertexIterator(this); } - class ConstVertexIterator { + class ConstVertexIterator + { public: - ConstVertexIterator(const Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} - ConstVertexIterator(class VertexIterator &it) : - m_mesh(it.m_mesh), - m_current(it.m_current) {} - - virtual void advance() { + ConstVertexIterator(const Mesh *mesh) : m_mesh(mesh), m_current(0) { } + ConstVertexIterator(class VertexIterator &it) : m_mesh(it.m_mesh), m_current(it.m_current) { } + + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->vertexCount(); } - virtual const Vertex *current() const { + virtual const Vertex *current() const + { return m_mesh->vertexAt(m_current); } @@ -2158,27 +2264,29 @@ public: const halfedge::Mesh *m_mesh; uint32_t m_current; }; - ConstVertexIterator vertices() const { + ConstVertexIterator vertices() const + { return ConstVertexIterator(this); } class ConstFaceIterator; - class FaceIterator { + class FaceIterator + { friend class ConstFaceIterator; - public: - FaceIterator(Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} + FaceIterator(Mesh *mesh) : m_mesh(mesh), m_current(0) { } - virtual void advance() { + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->faceCount(); } - virtual Face *current() const { + virtual Face *current() const + { return m_mesh->faceAt(m_current); } @@ -2186,26 +2294,27 @@ public: halfedge::Mesh *m_mesh; uint32_t m_current; }; - FaceIterator faces() { + FaceIterator faces() + { return FaceIterator(this); } - class ConstFaceIterator { + class ConstFaceIterator + { public: - ConstFaceIterator(const Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} - ConstFaceIterator(const FaceIterator &it) : - m_mesh(it.m_mesh), - m_current(it.m_current) {} - - virtual void advance() { + ConstFaceIterator(const Mesh *mesh) : m_mesh(mesh), m_current(0) { } + ConstFaceIterator(const FaceIterator &it) : m_mesh(it.m_mesh), m_current(it.m_current) { } + + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->faceCount(); } - virtual const Face *current() const { + virtual const Face *current() const + { return m_mesh->faceAt(m_current); } @@ -2213,27 +2322,29 @@ public: const halfedge::Mesh *m_mesh; uint32_t m_current; }; - ConstFaceIterator faces() const { + ConstFaceIterator faces() const + { return ConstFaceIterator(this); } class ConstEdgeIterator; - class EdgeIterator { + class EdgeIterator + { friend class ConstEdgeIterator; - public: - EdgeIterator(Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} + EdgeIterator(Mesh *mesh) : m_mesh(mesh), m_current(0) { } - virtual void advance() { + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->edgeCount(); } - virtual Edge *current() const { + virtual Edge *current() const + { return m_mesh->edgeAt(m_current); } @@ -2241,26 +2352,27 @@ public: halfedge::Mesh *m_mesh; uint32_t m_current; }; - EdgeIterator edges() { + EdgeIterator edges() + { return EdgeIterator(this); } - class ConstEdgeIterator { + class ConstEdgeIterator + { public: - ConstEdgeIterator(const Mesh *mesh) : - m_mesh(mesh), - m_current(0) {} - ConstEdgeIterator(const EdgeIterator &it) : - m_mesh(it.m_mesh), - m_current(it.m_current) {} - - virtual void advance() { + ConstEdgeIterator(const Mesh *mesh) : m_mesh(mesh), m_current(0) { } + ConstEdgeIterator(const EdgeIterator &it) : m_mesh(it.m_mesh), m_current(it.m_current) { } + + virtual void advance() + { m_current++; } - virtual bool isDone() const { + virtual bool isDone() const + { return m_current == m_mesh->edgeCount(); } - virtual const Edge *current() const { + virtual const Edge *current() const + { return m_mesh->edgeAt(m_current); } @@ -2268,13 +2380,15 @@ public: const halfedge::Mesh *m_mesh; uint32_t m_current; }; - ConstEdgeIterator edges() const { + ConstEdgeIterator edges() const + { return ConstEdgeIterator(this); } // @@ Add half-edge iterator. - bool isValid() const { + bool isValid() const + { // Make sure all edges are valid. const uint32_t edgeCount = m_edgeArray.size(); for (uint32_t e = 0; e < edgeCount; e++) { @@ -2300,9 +2414,11 @@ public: } // Error status: - - struct ErrorCode { - enum Enum { + + struct ErrorCode + { + enum Enum + { AlreadyAddedEdge, DegenerateColocalEdge, DegenerateEdge, @@ -2316,11 +2432,13 @@ public: private: // Return true if the face can be added to the manifold mesh. - bool canAddFace(const std::vector<uint32_t> &indexArray, uint32_t first, uint32_t num) const { + bool canAddFace(const std::vector<uint32_t> &indexArray, uint32_t first, uint32_t num) const + { return canAddFace(indexArray.data(), first, num); } - bool canAddFace(const uint32_t *indexArray, uint32_t first, uint32_t num) const { + bool canAddFace(const uint32_t *indexArray, uint32_t first, uint32_t num) const + { for (uint32_t j = num - 1, i = 0; i < num; j = i++) { if (!canAddEdge(indexArray[first + j], indexArray[first + i])) { errorIndex0 = indexArray[first + j]; @@ -2347,7 +2465,8 @@ private: } // Return true if the edge doesn't exist or doesn't have any adjacent face. - bool canAddEdge(uint32_t i, uint32_t j) const { + bool canAddEdge(uint32_t i, uint32_t j) const + { if (i == j) { // Skip degenerate edges. errorCode = ErrorCode::DegenerateEdge; @@ -2373,7 +2492,8 @@ private: return true; } - Edge *addEdge(uint32_t i, uint32_t j) { + Edge *addEdge(uint32_t i, uint32_t j) + { xaAssert(i != j); Edge *edge = findEdge(i, j); if (edge != NULL) { @@ -2406,7 +2526,8 @@ private: } /// Find edge, test all colocals. - Edge *findEdge(uint32_t i, uint32_t j) const { + Edge *findEdge(uint32_t i, uint32_t j) const + { Edge *edge = NULL; const Vertex *v0 = vertexAt(i); const Vertex *v1 = vertexAt(j); @@ -2418,9 +2539,9 @@ private: auto edgeIt = m_edgeMap.find(key); if (edgeIt != m_edgeMap.end()) edge = (*edgeIt).second; -#if !defined(_DEBUG) + #if !defined(_DEBUG) if (edge != NULL) return edge; -#endif + #endif } else { // Make sure that only one edge is found. xaDebugAssert(m_edgeMap.find(key) == m_edgeMap.end()); @@ -2431,7 +2552,8 @@ private: } /// Link this boundary edge. - void linkBoundaryEdge(Edge *edge) { + void linkBoundaryEdge(Edge *edge) + { xaAssert(edge->face == NULL); // Make sure next pointer has not been set. @@ We want to be able to relink boundary edges after mesh changes. Edge *next = edge; @@ -2451,7 +2573,8 @@ private: } } - Vertex *splitBoundaryEdge(Edge *edge, float t, const Vector3 &pos) { + Vertex *splitBoundaryEdge(Edge *edge, float t, const Vector3 &pos) + { /* We want to go from this configuration: @@ -2521,19 +2644,18 @@ private: std::vector<Edge *> m_edgeArray; std::vector<Face *> m_faceArray; - struct Key { + struct Key + { Key() {} - Key(const Key &k) : - p0(k.p0), - p1(k.p1) {} - Key(uint32_t v0, uint32_t v1) : - p0(v0), - p1(v1) {} - void operator=(const Key &k) { + Key(const Key &k) : p0(k.p0), p1(k.p1) {} + Key(uint32_t v0, uint32_t v1) : p0(v0), p1(v1) {} + void operator=(const Key &k) + { p0 = k.p0; p1 = k.p1; } - bool operator==(const Key &k) const { + bool operator==(const Key &k) const + { return p0 == k.p0 && p1 == k.p1; } @@ -2546,48 +2668,54 @@ private: uint32_t m_colocalVertexCount; }; -class MeshTopology { +class MeshTopology +{ public: - MeshTopology(const Mesh *mesh) { + MeshTopology(const Mesh *mesh) + { buildTopologyInfo(mesh); } /// Determine if the mesh is connected. - bool isConnected() const { + bool isConnected() const + { return m_connectedCount == 1; } /// Determine if the mesh is closed. (Each edge is shared by two faces) - bool isClosed() const { + bool isClosed() const + { return m_boundaryCount == 0; } /// Return true if the mesh has the topology of a disk. - bool isDisk() const { - return isConnected() && m_boundaryCount == 1 /* && m_eulerNumber == 1*/; + bool isDisk() const + { + return isConnected() && m_boundaryCount == 1/* && m_eulerNumber == 1*/; } private: - void buildTopologyInfo(const Mesh *mesh) { + void buildTopologyInfo(const Mesh *mesh) + { const uint32_t vertexCount = mesh->colocalVertexCount(); const uint32_t faceCount = mesh->faceCount(); const uint32_t edgeCount = mesh->edgeCount(); - xaPrint("--- Building mesh topology:\n"); + xaPrint( "--- Building mesh topology:\n" ); std::vector<uint32_t> stack(faceCount); BitArray bitFlags(faceCount); bitFlags.clearAll(); // Compute connectivity. - xaPrint("--- Computing connectivity.\n"); + xaPrint( "--- Computing connectivity.\n" ); m_connectedCount = 0; - for (uint32_t f = 0; f < faceCount; f++) { - if (bitFlags.bitAt(f) == false) { + for (uint32_t f = 0; f < faceCount; f++ ) { + if ( bitFlags.bitAt(f) == false ) { m_connectedCount++; - stack.push_back(f); - while (!stack.empty()) { + stack.push_back( f ); + while ( !stack.empty() ) { const uint32_t top = stack.back(); xaAssert(top != uint32_t(~0)); stack.pop_back(); - if (bitFlags.bitAt(top) == false) { + if ( bitFlags.bitAt(top) == false ) { bitFlags.setBitAt(top); const Face *face = mesh->faceAt(top); const Edge *firstEdge = face->edge; @@ -2604,9 +2732,9 @@ private: } } xaAssert(stack.empty()); - xaPrint("--- %d connected components.\n", m_connectedCount); + xaPrint( "--- %d connected components.\n", m_connectedCount ); // Count boundary loops. - xaPrint("--- Counting boundary loops.\n"); + xaPrint( "--- Counting boundary loops.\n" ); m_boundaryCount = 0; bitFlags.resize(edgeCount); bitFlags.clearAll(); @@ -2625,13 +2753,13 @@ private: } while (startEdge != edge); } } - xaPrint("--- %d boundary loops found.\n", m_boundaryCount); + xaPrint("--- %d boundary loops found.\n", m_boundaryCount ); // Compute euler number. m_eulerNumber = vertexCount - edgeCount + faceCount; xaPrint("--- Euler number: %d.\n", m_eulerNumber); // Compute genus. (only valid on closed connected surfaces) m_genus = -1; - if (isClosed() && isConnected()) { + if ( isClosed() && isConnected() ) { m_genus = (2 - m_eulerNumber) / 2; xaPrint("--- Genus: %d.\n", m_genus); } @@ -2651,7 +2779,8 @@ private: int m_genus; }; -float computeSurfaceArea(const halfedge::Mesh *mesh) { +float computeSurfaceArea(const halfedge::Mesh *mesh) +{ float area = 0; for (halfedge::Mesh::ConstFaceIterator it(mesh->faces()); !it.isDone(); it.advance()) { const halfedge::Face *face = it.current(); @@ -2661,7 +2790,8 @@ float computeSurfaceArea(const halfedge::Mesh *mesh) { return area; } -float computeParametricArea(const halfedge::Mesh *mesh) { +float computeParametricArea(const halfedge::Mesh *mesh) +{ float area = 0; for (halfedge::Mesh::ConstFaceIterator it(mesh->faces()); !it.isDone(); it.advance()) { const halfedge::Face *face = it.current(); @@ -2670,7 +2800,8 @@ float computeParametricArea(const halfedge::Mesh *mesh) { return area; } -uint32_t countMeshTriangles(const Mesh *mesh) { +uint32_t countMeshTriangles(const Mesh *mesh) +{ const uint32_t faceCount = mesh->faceCount(); uint32_t triangleCount = 0; for (uint32_t f = 0; f < faceCount; f++) { @@ -2682,7 +2813,8 @@ uint32_t countMeshTriangles(const Mesh *mesh) { return triangleCount; } -Mesh *unifyVertices(const Mesh *inputMesh) { +Mesh *unifyVertices(const Mesh *inputMesh) +{ Mesh *mesh = new Mesh; // Only add the first colocal. const uint32_t vertexCount = inputMesh->vertexCount(); @@ -2709,15 +2841,17 @@ Mesh *unifyVertices(const Mesh *inputMesh) { return mesh; } -static bool pointInTriangle(const Vector2 &p, const Vector2 &a, const Vector2 &b, const Vector2 &c) { +static bool pointInTriangle(const Vector2 &p, const Vector2 &a, const Vector2 &b, const Vector2 &c) +{ return triangleArea(a, b, p) >= 0.00001f && - triangleArea(b, c, p) >= 0.00001f && - triangleArea(c, a, p) >= 0.00001f; + triangleArea(b, c, p) >= 0.00001f && + triangleArea(c, a, p) >= 0.00001f; } // This is doing a simple ear-clipping algorithm that skips invalid triangles. Ideally, we should // also sort the ears by angle, start with the ones that have the smallest angle and proceed in order. -Mesh *triangulate(const Mesh *inputMesh) { +Mesh *triangulate(const Mesh *inputMesh) +{ Mesh *mesh = new Mesh; // Add all vertices. const uint32_t vertexCount = inputMesh->vertexCount(); @@ -2781,12 +2915,6 @@ Mesh *triangulate(const Mesh *inputMesh) { Vector2 p0 = polygonPoints[i0]; Vector2 p1 = polygonPoints[i1]; Vector2 p2 = polygonPoints[i2]; - - bool degenerate = distance(p0, p1) < NV_EPSILON || distance(p0, p2) < NV_EPSILON || distance(p1, p2) < NV_EPSILON; - if (degenerate) { - continue; - } - float d = clamp(dot(p0 - p1, p2 - p1) / (length(p0 - p1) * length(p2 - p1)), -1.0f, 1.0f); float angle = acosf(d); float area = triangleArea(p0, p1, p2); @@ -2810,9 +2938,6 @@ Mesh *triangulate(const Mesh *inputMesh) { } } } - if (!bestIsValid) - break; - xaDebugAssert(minAngle <= 2 * PI); // Clip best ear: uint32_t i0 = (bestEar + size - 1) % size; @@ -2835,59 +2960,66 @@ Mesh *triangulate(const Mesh *inputMesh) { } // namespace halfedge /// Mersenne twister random number generator. -class MTRand { +class MTRand +{ public: enum time_e { Time }; - enum { N = 624 }; // length of state vector + enum { N = 624 }; // length of state vector enum { M = 397 }; /// Constructor that uses the current time as the seed. - MTRand(time_e) { - seed((uint32_t)time(NULL)); + MTRand( time_e ) + { + seed((uint32_t )time(NULL)); } /// Constructor that uses the given seed. - MTRand(uint32_t s = 0) { + MTRand( uint32_t s = 0 ) + { seed(s); } /// Provide a new seed. - void seed(uint32_t s) { + void seed( uint32_t s ) + { initialize(s); reload(); } /// Get a random number between 0 - 65536. - uint32_t get() { + uint32_t get() + { // Pull a 32-bit integer from the generator state // Every other access function simply transforms the numbers extracted here - if (left == 0) { + if ( left == 0 ) { reload(); } left--; uint32_t s1; s1 = *next++; s1 ^= (s1 >> 11); - s1 ^= (s1 << 7) & 0x9d2c5680U; + s1 ^= (s1 << 7) & 0x9d2c5680U; s1 ^= (s1 << 15) & 0xefc60000U; - return (s1 ^ (s1 >> 18)); + return ( s1 ^ (s1 >> 18) ); }; /// Get a random number on [0, max] interval. - uint32_t getRange(uint32_t max) { + uint32_t getRange( uint32_t max ) + { if (max == 0) return 0; if (max == NV_UINT32_MAX) return get(); - const uint32_t np2 = nextPowerOfTwo(max + 1); // @@ This fails if max == NV_UINT32_MAX + const uint32_t np2 = nextPowerOfTwo( max + 1 ); // @@ This fails if max == NV_UINT32_MAX const uint32_t mask = np2 - 1; uint32_t n; do { n = get() & mask; - } while (n > max); + } while ( n > max ); return n; } private: - void initialize(uint32_t seed) { + void initialize( uint32_t seed ) + { // Initialize generator state with seed // See Knuth TAOCP Vol 2, 3rd Ed, p.106 for multiplier. // In previous versions, most significant bits (MSBs) of the seed affect @@ -2896,44 +3028,50 @@ private: uint32_t *r = state; int i = 1; *s++ = seed & 0xffffffffUL; - for (; i < N; ++i) { - *s++ = (1812433253UL * (*r ^ (*r >> 30)) + i) & 0xffffffffUL; + for ( ; i < N; ++i ) { + *s++ = ( 1812433253UL * ( *r ^ (*r >> 30) ) + i ) & 0xffffffffUL; r++; } } - void reload() { + void reload() + { // Generate N new values in state // Made clearer and faster by Matthew Bellew (matthew.bellew@home.com) uint32_t *p = state; int i; - for (i = N - M; i--; ++p) - *p = twist(p[M], p[0], p[1]); - for (i = M; --i; ++p) - *p = twist(p[M - N], p[0], p[1]); - *p = twist(p[M - N], p[0], state[0]); + for ( i = N - M; i--; ++p ) + *p = twist( p[M], p[0], p[1] ); + for ( i = M; --i; ++p ) + *p = twist( p[M - N], p[0], p[1] ); + *p = twist( p[M - N], p[0], state[0] ); left = N, next = state; } - uint32_t hiBit(uint32_t u) const { + uint32_t hiBit( uint32_t u ) const + { return u & 0x80000000U; } - uint32_t loBit(uint32_t u) const { + uint32_t loBit( uint32_t u ) const + { return u & 0x00000001U; } - uint32_t loBits(uint32_t u) const { + uint32_t loBits( uint32_t u ) const + { return u & 0x7fffffffU; } - uint32_t mixBits(uint32_t u, uint32_t v) const { + uint32_t mixBits( uint32_t u, uint32_t v ) const + { return hiBit(u) | loBits(v); } - uint32_t twist(uint32_t m, uint32_t s0, uint32_t s1) const { + uint32_t twist( uint32_t m, uint32_t s0, uint32_t s1 ) const + { return m ^ (mixBits(s0, s1) >> 1) ^ ((~loBit(s1) + 1) & 0x9908b0dfU); } - uint32_t state[N]; // internal state - uint32_t *next; // next value to get from state - int left; // number of values left before reload needed + uint32_t state[N]; // internal state + uint32_t *next; // next value to get from state + int left; // number of values left before reload needed }; namespace morton { @@ -2941,50 +3079,59 @@ namespace morton { // http://fgiesen.wordpress.com/2009/12/13/decoding-morton-codes/ // Inverse of part1By1 - "delete" all odd-indexed bits -uint32_t compact1By1(uint32_t x) { - x &= 0x55555555; // x = -f-e -d-c -b-a -9-8 -7-6 -5-4 -3-2 -1-0 - x = (x ^ (x >> 1)) & 0x33333333; // x = --fe --dc --ba --98 --76 --54 --32 --10 - x = (x ^ (x >> 2)) & 0x0f0f0f0f; // x = ---- fedc ---- ba98 ---- 7654 ---- 3210 - x = (x ^ (x >> 4)) & 0x00ff00ff; // x = ---- ---- fedc ba98 ---- ---- 7654 3210 - x = (x ^ (x >> 8)) & 0x0000ffff; // x = ---- ---- ---- ---- fedc ba98 7654 3210 +uint32_t compact1By1(uint32_t x) +{ + x &= 0x55555555; // x = -f-e -d-c -b-a -9-8 -7-6 -5-4 -3-2 -1-0 + x = (x ^ (x >> 1)) & 0x33333333; // x = --fe --dc --ba --98 --76 --54 --32 --10 + x = (x ^ (x >> 2)) & 0x0f0f0f0f; // x = ---- fedc ---- ba98 ---- 7654 ---- 3210 + x = (x ^ (x >> 4)) & 0x00ff00ff; // x = ---- ---- fedc ba98 ---- ---- 7654 3210 + x = (x ^ (x >> 8)) & 0x0000ffff; // x = ---- ---- ---- ---- fedc ba98 7654 3210 return x; } // Inverse of part1By2 - "delete" all bits not at positions divisible by 3 -uint32_t compact1By2(uint32_t x) { - x &= 0x09249249; // x = ---- 9--8 --7- -6-- 5--4 --3- -2-- 1--0 - x = (x ^ (x >> 2)) & 0x030c30c3; // x = ---- --98 ---- 76-- --54 ---- 32-- --10 - x = (x ^ (x >> 4)) & 0x0300f00f; // x = ---- --98 ---- ---- 7654 ---- ---- 3210 - x = (x ^ (x >> 8)) & 0xff0000ff; // x = ---- --98 ---- ---- ---- ---- 7654 3210 +uint32_t compact1By2(uint32_t x) +{ + x &= 0x09249249; // x = ---- 9--8 --7- -6-- 5--4 --3- -2-- 1--0 + x = (x ^ (x >> 2)) & 0x030c30c3; // x = ---- --98 ---- 76-- --54 ---- 32-- --10 + x = (x ^ (x >> 4)) & 0x0300f00f; // x = ---- --98 ---- ---- 7654 ---- ---- 3210 + x = (x ^ (x >> 8)) & 0xff0000ff; // x = ---- --98 ---- ---- ---- ---- 7654 3210 x = (x ^ (x >> 16)) & 0x000003ff; // x = ---- ---- ---- ---- ---- --98 7654 3210 return x; } -uint32_t decodeMorton2X(uint32_t code) { +uint32_t decodeMorton2X(uint32_t code) +{ return compact1By1(code >> 0); } -uint32_t decodeMorton2Y(uint32_t code) { +uint32_t decodeMorton2Y(uint32_t code) +{ return compact1By1(code >> 1); } -uint32_t decodeMorton3X(uint32_t code) { +uint32_t decodeMorton3X(uint32_t code) +{ return compact1By2(code >> 0); } -uint32_t decodeMorton3Y(uint32_t code) { +uint32_t decodeMorton3Y(uint32_t code) +{ return compact1By2(code >> 1); } -uint32_t decodeMorton3Z(uint32_t code) { +uint32_t decodeMorton3Z(uint32_t code) +{ return compact1By2(code >> 2); } } // namespace morton // A simple, dynamic proximity grid based on Jon's code. // Instead of storing pointers here I store indices. -struct ProximityGrid { - void init(const Box &box, uint32_t count) { +struct ProximityGrid +{ + void init(const Box &box, uint32_t count) + { cellArray.clear(); // Determine grid size. float cellWidth; @@ -3021,19 +3168,23 @@ struct ProximityGrid { corner = box.minCorner; // @@ Align grid better? } - int index_x(float x) const { - return clamp(ftoi_floor((x - corner.x) * invCellSize.x), 0, sx - 1); + int index_x(float x) const + { + return clamp(ftoi_floor((x - corner.x) * invCellSize.x), 0, sx - 1); } - int index_y(float y) const { - return clamp(ftoi_floor((y - corner.y) * invCellSize.y), 0, sy - 1); + int index_y(float y) const + { + return clamp(ftoi_floor((y - corner.y) * invCellSize.y), 0, sy - 1); } - int index_z(float z) const { - return clamp(ftoi_floor((z - corner.z) * invCellSize.z), 0, sz - 1); + int index_z(float z) const + { + return clamp(ftoi_floor((z - corner.z) * invCellSize.z), 0, sz - 1); } - int index(int x, int y, int z) const { + int index(int x, int y, int z) const + { xaDebugAssert(x >= 0 && x < sx); xaDebugAssert(y >= 0 && y < sy); xaDebugAssert(z >= 0 && z < sz); @@ -3042,7 +3193,8 @@ struct ProximityGrid { return idx; } - uint32_t mortonCount() const { + uint32_t mortonCount() const + { uint64_t s = uint64_t(max3(sx, sy, sz)); s = nextPowerOfTwo(s); if (s > 1024) { @@ -3051,7 +3203,8 @@ struct ProximityGrid { return uint32_t(s * s * s); } - int mortonIndex(uint32_t code) const { + int mortonIndex(uint32_t code) const + { uint32_t x, y, z; uint32_t s = uint32_t(max3(sx, sy, sz)); if (s > 1024) { @@ -3084,7 +3237,8 @@ struct ProximityGrid { return index(x, y, z); } - void add(const Vector3 &pos, uint32_t key) { + void add(const Vector3 &pos, uint32_t key) + { int x = index_x(pos.x); int y = index_y(pos.y); int z = index_z(pos.z); @@ -3094,7 +3248,8 @@ struct ProximityGrid { // Gather all points inside the given sphere. // Radius is assumed to be small, so we don't bother culling the cells. - void gather(const Vector3 &position, float radius, std::vector<uint32_t> &indexArray) { + void gather(const Vector3 &position, float radius, std::vector<uint32_t> &indexArray) + { int x0 = index_x(position.x - radius); int x1 = index_x(position.x + radius); int y0 = index_y(position.y - radius); @@ -3125,26 +3280,25 @@ struct ProximityGrid { // Based on Pierre Terdiman's and Michael Herf's source code. // http://www.codercorner.com/RadixSortRevisited.htm // http://www.stereopsis.com/radix.html -class RadixSort { +class RadixSort +{ public: - RadixSort() : - m_size(0), - m_ranks(NULL), - m_ranks2(NULL), - m_validRanks(false) {} - ~RadixSort() { + RadixSort() : m_size(0), m_ranks(NULL), m_ranks2(NULL), m_validRanks(false) {} + ~RadixSort() + { // Release everything free(m_ranks2); free(m_ranks); } - RadixSort &sort(const float *input, uint32_t count) { + RadixSort &sort(const float *input, uint32_t count) + { if (input == NULL || count == 0) return *this; // Resize lists if needed if (count != m_size) { if (count > m_size) { - m_ranks2 = (uint32_t *)realloc(m_ranks2, sizeof(uint32_t) * count); - m_ranks = (uint32_t *)realloc(m_ranks, sizeof(uint32_t) * count); + m_ranks2 = (uint32_t *)realloc(m_ranks2, sizeof(uint32_t ) * count); + m_ranks = (uint32_t *)realloc(m_ranks, sizeof(uint32_t ) * count); } m_size = count; m_validRanks = false; @@ -3164,16 +3318,19 @@ public: return *this; } - RadixSort &sort(const std::vector<float> &input) { + RadixSort &sort(const std::vector<float> &input) + { return sort(input.data(), input.size()); } // Access to results. m_ranks is a list of indices in sorted order, i.e. in the order you may further process your data - const uint32_t *ranks() const { + const uint32_t *ranks() const + { xaDebugAssert(m_validRanks); return m_ranks; } - uint32_t *ranks() { + uint32_t *ranks() + { xaDebugAssert(m_validRanks); return m_ranks; } @@ -3184,18 +3341,21 @@ private: uint32_t *m_ranks2; bool m_validRanks; - void FloatFlip(uint32_t &f) { + void FloatFlip(uint32_t &f) + { int32_t mask = (int32_t(f) >> 31) | 0x80000000; // Warren Hunt, Manchor Ko. f ^= mask; } - void IFloatFlip(uint32_t &f) { + void IFloatFlip(uint32_t &f) + { uint32_t mask = ((f >> 31) - 1) | 0x80000000; // Michael Herf. f ^= mask; } - template <typename T> - void createHistograms(const T *buffer, uint32_t count, uint32_t *histogram) { + template<typename T> + void createHistograms(const T *buffer, uint32_t count, uint32_t *histogram) + { const uint32_t bucketCount = sizeof(T); // (8 * sizeof(T)) / log2(radix) // Init bucket pointers. uint32_t *h[bucketCount]; @@ -3203,10 +3363,10 @@ private: h[i] = histogram + 256 * i; } // Clear histograms. - memset(histogram, 0, 256 * bucketCount * sizeof(uint32_t)); + memset(histogram, 0, 256 * bucketCount * sizeof(uint32_t )); // @@ Add support for signed integers. // Build histograms. - const uint8_t *p = (const uint8_t *)buffer; // @@ Does this break aliasing rules? + const uint8_t *p = (const uint8_t *)buffer; // @@ Does this break aliasing rules? const uint8_t *pe = p + count * sizeof(T); while (p != pe) { h[0][*p++]++, h[1][*p++]++, h[2][*p++]++, h[3][*p++]++; @@ -3221,8 +3381,8 @@ private: } } - template <typename T> - void insertionSort(const T *input, uint32_t count) { + template <typename T> void insertionSort(const T *input, uint32_t count) + { if (!m_validRanks) { m_ranks[0] = 0; for (uint32_t i = 1; i != count; ++i) { @@ -3252,8 +3412,8 @@ private: } } - template <typename T> - void radixSort(const T *input, uint32_t count) { + template <typename T> void radixSort(const T *input, uint32_t count) + { const uint32_t P = sizeof(T); // pass count // Allocate histograms & offsets on the stack uint32_t histogram[256 * P]; @@ -3271,8 +3431,7 @@ private: } // Create offsets link[0] = m_ranks2; - for (uint32_t i = 1; i < 256; i++) - link[i] = link[i - 1] + h[i - 1]; + for (uint32_t i = 1; i < 256; i++) link[i] = link[i - 1] + h[i - 1]; // Perform Radix Sort if (!m_validRanks) { for (uint32_t i = 0; i < count; i++) { @@ -3299,9 +3458,11 @@ private: }; namespace raster { -class ClippedTriangle { +class ClippedTriangle +{ public: - ClippedTriangle(Vector2::Arg a, Vector2::Arg b, Vector2::Arg c) { + ClippedTriangle(Vector2::Arg a, Vector2::Arg b, Vector2::Arg c) + { m_numVertices = 3; m_activeVertexBuffer = 0; m_verticesA[0] = a; @@ -3311,27 +3472,30 @@ public: m_vertexBuffers[1] = m_verticesB; } - uint32_t vertexCount() { + uint32_t vertexCount() + { return m_numVertices; } - const Vector2 *vertices() { + const Vector2 *vertices() + { return m_vertexBuffers[m_activeVertexBuffer]; } - void clipHorizontalPlane(float offset, float clipdirection) { - Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; + void clipHorizontalPlane(float offset, float clipdirection) + { + Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; m_activeVertexBuffer ^= 1; Vector2 *v2 = m_vertexBuffers[m_activeVertexBuffer]; v[m_numVertices] = v[0]; - float dy2, dy1 = offset - v[0].y; - int dy2in, dy1in = clipdirection * dy1 >= 0; - uint32_t p = 0; + float dy2, dy1 = offset - v[0].y; + int dy2in, dy1in = clipdirection * dy1 >= 0; + uint32_t p = 0; for (uint32_t k = 0; k < m_numVertices; k++) { - dy2 = offset - v[k + 1].y; + dy2 = offset - v[k + 1].y; dy2in = clipdirection * dy2 >= 0; if (dy1in) v2[p++] = v[k]; - if (dy1in + dy2in == 1) { // not both in/out + if ( dy1in + dy2in == 1 ) { // not both in/out float dx = v[k + 1].x - v[k].x; float dy = v[k + 1].y - v[k].y; v2[p++] = Vector2(v[k].x + dy1 * (dx / dy), offset); @@ -3343,19 +3507,20 @@ public: //for (uint32_t k=0; k<m_numVertices; k++) printf("(%f, %f)\n", v2[k].x, v2[k].y); printf("\n"); } - void clipVerticalPlane(float offset, float clipdirection) { - Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; + void clipVerticalPlane(float offset, float clipdirection ) + { + Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; m_activeVertexBuffer ^= 1; Vector2 *v2 = m_vertexBuffers[m_activeVertexBuffer]; v[m_numVertices] = v[0]; - float dx2, dx1 = offset - v[0].x; - int dx2in, dx1in = clipdirection * dx1 >= 0; - uint32_t p = 0; + float dx2, dx1 = offset - v[0].x; + int dx2in, dx1in = clipdirection * dx1 >= 0; + uint32_t p = 0; for (uint32_t k = 0; k < m_numVertices; k++) { dx2 = offset - v[k + 1].x; dx2in = clipdirection * dx2 >= 0; if (dx1in) v2[p++] = v[k]; - if (dx1in + dx2in == 1) { // not both in/out + if ( dx1in + dx2in == 1 ) { // not both in/out float dx = v[k + 1].x - v[k].x; float dy = v[k + 1].y - v[k].y; v2[p++] = Vector2(offset, v[k].y + dx1 * (dy / dx)); @@ -3366,8 +3531,9 @@ public: m_numVertices = p; } - void computeAreaCentroid() { - Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; + void computeAreaCentroid() + { + Vector2 *v = m_vertexBuffers[m_activeVertexBuffer]; v[m_numVertices] = v[0]; m_area = 0; float centroidx = 0, centroidy = 0; @@ -3386,19 +3552,22 @@ public: } } - void clipAABox(float x0, float y0, float x1, float y1) { - clipVerticalPlane(x0, -1); - clipHorizontalPlane(y0, -1); - clipVerticalPlane(x1, 1); - clipHorizontalPlane(y1, 1); + void clipAABox(float x0, float y0, float x1, float y1) + { + clipVerticalPlane ( x0, -1); + clipHorizontalPlane( y0, -1); + clipVerticalPlane ( x1, 1); + clipHorizontalPlane( y1, 1); computeAreaCentroid(); } - Vector2 centroid() { + Vector2 centroid() + { return m_centroid; } - float area() { + float area() + { return m_area; } @@ -3406,18 +3575,20 @@ private: Vector2 m_verticesA[7 + 1]; Vector2 m_verticesB[7 + 1]; Vector2 *m_vertexBuffers[2]; - uint32_t m_numVertices; - uint32_t m_activeVertexBuffer; - float m_area; + uint32_t m_numVertices; + uint32_t m_activeVertexBuffer; + float m_area; Vector2 m_centroid; }; /// A callback to sample the environment. Return false to terminate rasterization. -typedef bool (*SamplingCallback)(void *param, int x, int y, Vector3::Arg bar, Vector3::Arg dx, Vector3::Arg dy, float coverage); +typedef bool (* SamplingCallback)(void *param, int x, int y, Vector3::Arg bar, Vector3::Arg dx, Vector3::Arg dy, float coverage); /// A triangle for rasterization. -struct Triangle { - Triangle(Vector2::Arg v0, Vector2::Arg v1, Vector2::Arg v2, Vector3::Arg t0, Vector3::Arg t1, Vector3::Arg t2) { +struct Triangle +{ + Triangle(Vector2::Arg v0, Vector2::Arg v1, Vector2::Arg v2, Vector3::Arg t0, Vector3::Arg t1, Vector3::Arg t2) + { // Init vertices. this->v1 = v0; this->v2 = v2; @@ -3437,7 +3608,8 @@ struct Triangle { /// This method takes two edge vectors that form a basis, determines the /// coordinates of the canonic vectors in that basis, and computes the /// texture gradient that corresponds to those vectors. - bool computeDeltas() { + bool computeDeltas() + { Vector2 e0 = v3 - v1; Vector2 e1 = v2 - v1; Vector3 de0 = t3 - t1; @@ -3446,16 +3618,17 @@ struct Triangle { if (!std::isfinite(denom)) { return false; } - float lambda1 = -e1.y * denom; + float lambda1 = - e1.y * denom; float lambda2 = e0.y * denom; float lambda3 = e1.x * denom; - float lambda4 = -e0.x * denom; + float lambda4 = - e0.x * denom; dx = de0 * lambda1 + de1 * lambda2; dy = de0 * lambda3 + de1 * lambda4; return true; } - bool draw(const Vector2 &extents, bool enableScissors, SamplingCallback cb, void *param) { + bool draw(const Vector2 &extents, bool enableScissors, SamplingCallback cb, void *param) + { // 28.4 fixed-point coordinates const int Y1 = ftoi_round(16.0f * v1.y); const int Y2 = ftoi_round(16.0f * v2.y); @@ -3479,10 +3652,10 @@ struct Triangle { const int FDY31 = DY31 << 4; int minx, miny, maxx, maxy; if (enableScissors) { - int frustumX0 = 0 << 4; - int frustumY0 = 0 << 4; - int frustumX1 = (int)extents.x << 4; - int frustumY1 = (int)extents.y << 4; + int frustumX0 = 0 << 4; + int frustumY0 = 0 << 4; + int frustumX1 = (int)extents.x << 4; + int frustumY1 = (int)extents.y << 4; // Bounding rectangle minx = (std::max(min3(X1, X2, X3), frustumX0) + 0xF) >> 4; miny = (std::max(min3(Y1, Y2, Y3), frustumY0) + 0xF) >> 4; @@ -3586,26 +3759,27 @@ struct Triangle { } // extents has to be multiple of BK_SIZE!! - bool drawAA(const Vector2 &extents, bool enableScissors, SamplingCallback cb, void *param) { - const float PX_INSIDE = 1.0f / sqrt(2.0f); - const float PX_OUTSIDE = -1.0f / sqrt(2.0f); + bool drawAA(const Vector2 &extents, bool enableScissors, SamplingCallback cb, void *param) + { + const float PX_INSIDE = 1.0f/sqrt(2.0f); + const float PX_OUTSIDE = -1.0f/sqrt(2.0f); const float BK_SIZE = 8; - const float BK_INSIDE = sqrt(BK_SIZE * BK_SIZE / 2.0f); - const float BK_OUTSIDE = -sqrt(BK_SIZE * BK_SIZE / 2.0f); + const float BK_INSIDE = sqrt(BK_SIZE*BK_SIZE/2.0f); + const float BK_OUTSIDE = -sqrt(BK_SIZE*BK_SIZE/2.0f); float minx, miny, maxx, maxy; if (enableScissors) { // Bounding rectangle minx = floorf(std::max(min3(v1.x, v2.x, v3.x), 0.0f)); miny = floorf(std::max(min3(v1.y, v2.y, v3.y), 0.0f)); - maxx = ceilf(std::min(max3(v1.x, v2.x, v3.x), extents.x - 1.0f)); - maxy = ceilf(std::min(max3(v1.y, v2.y, v3.y), extents.y - 1.0f)); + maxx = ceilf( std::min(max3(v1.x, v2.x, v3.x), extents.x - 1.0f)); + maxy = ceilf( std::min(max3(v1.y, v2.y, v3.y), extents.y - 1.0f)); } else { // Bounding rectangle minx = floorf(min3(v1.x, v2.x, v3.x)); miny = floorf(min3(v1.y, v2.y, v3.y)); - maxx = ceilf(max3(v1.x, v2.x, v3.x)); - maxy = ceilf(max3(v1.y, v2.y, v3.y)); + maxx = ceilf( max3(v1.x, v2.x, v3.x)); + maxy = ceilf( max3(v1.y, v2.y, v3.y)); } // There's no reason to align the blocks to the viewport, instead we align them to the origin of the triangle bounds. minx = floorf(minx); @@ -3631,9 +3805,9 @@ struct Triangle { float bC = C2 + n2.x * xc + n2.y * yc; float cC = C3 + n3.x * xc + n3.y * yc; // Skip block when outside an edge - if ((aC <= BK_OUTSIDE) || (bC <= BK_OUTSIDE) || (cC <= BK_OUTSIDE)) continue; + if ( (aC <= BK_OUTSIDE) || (bC <= BK_OUTSIDE) || (cC <= BK_OUTSIDE) ) continue; // Accept whole block when totally covered - if ((aC >= BK_INSIDE) && (bC >= BK_INSIDE) && (cC >= BK_INSIDE)) { + if ( (aC >= BK_INSIDE) && (bC >= BK_INSIDE) && (cC >= BK_INSIDE) ) { Vector3 texRow = t1 + dy * (y0 - v1.y) + dx * (x0 - v1.x); for (float y = y0; y < y0 + BK_SIZE; y++) { Vector3 tex = texRow; @@ -3695,9 +3869,10 @@ struct Triangle { return true; } - void flipBackface() { + void flipBackface() + { // check if triangle is backfacing, if so, swap two vertices - if (((v3.x - v1.x) * (v2.y - v1.y) - (v3.y - v1.y) * (v2.x - v1.x)) < 0) { + if ( ((v3.x - v1.x) * (v2.y - v1.y) - (v3.y - v1.y) * (v2.x - v1.x)) < 0 ) { Vector2 hv = v1; v1 = v2; v2 = hv; // swap pos @@ -3708,7 +3883,8 @@ struct Triangle { } // compute unit inward normals for each edge. - void computeUnitInwardNormals() { + void computeUnitInwardNormals() + { n1 = v1 - v2; n1 = Vector2(-n1.y, n1.x); n1 = n1 * (1.0f / sqrtf(n1.x * n1.x + n1.y * n1.y)); @@ -3732,13 +3908,15 @@ struct Triangle { bool valid; }; -enum Mode { +enum Mode +{ Mode_Nearest, Mode_Antialiased }; // Process the given triangle. Returns false if rasterization was interrupted by the callback. -static bool drawTriangle(Mode mode, Vector2::Arg extents, bool enableScissors, const Vector2 v[3], SamplingCallback cb, void *param) { +static bool drawTriangle(Mode mode, Vector2::Arg extents, bool enableScissors, const Vector2 v[3], SamplingCallback cb, void *param) +{ Triangle tri(v[0], v[1], v[2], Vector3(1, 0, 0), Vector3(0, 1, 0), Vector3(0, 0, 1)); // @@ It would be nice to have a conservative drawing mode that enlarges the triangle extents by one texel and is able to handle degenerate triangles. // @@ Maybe the simplest thing to do would be raster triangle edges. @@ -3754,7 +3932,8 @@ static bool drawTriangle(Mode mode, Vector2::Arg extents, bool enableScissors, c } // Process the given quad. Returns false if rasterization was interrupted by the callback. -static bool drawQuad(Mode mode, Vector2::Arg extents, bool enableScissors, const Vector2 v[4], SamplingCallback cb, void *param) { +static bool drawQuad(Mode mode, Vector2::Arg extents, bool enableScissors, const Vector2 v[4], SamplingCallback cb, void *param) +{ bool sign0 = triangleArea2(v[0], v[1], v[2]) > 0.0f; bool sign1 = triangleArea2(v[0], v[2], v[3]) > 0.0f; // Divide the quad into two non overlapping triangles. @@ -3786,7 +3965,8 @@ static bool drawQuad(Mode mode, Vector2::Arg extents, bool enableScissors, const // Full and sparse vector and matrix classes. BLAS subset. // Pseudo-BLAS interface. namespace sparse { -enum Transpose { +enum Transpose +{ NoTransposed = 0, Transposed = 1 }; @@ -3799,22 +3979,22 @@ enum Transpose { * elements for each row of the matrix. As with the FullVector the * dimension of the matrix is constant. **/ -class Matrix { +class Matrix +{ public: // An element of the sparse array. - struct Coefficient { - uint32_t x; // column + struct Coefficient + { + uint32_t x; // column float v; // value }; - Matrix(uint32_t d) : - m_width(d) { m_array.resize(d); } - Matrix(uint32_t w, uint32_t h) : - m_width(w) { m_array.resize(h); } - Matrix(const Matrix &m) : - m_width(m.m_width) { m_array = m.m_array; } + Matrix(uint32_t d) : m_width(d) { m_array.resize(d); } + Matrix(uint32_t w, uint32_t h) : m_width(w) { m_array.resize(h); } + Matrix(const Matrix &m) : m_width(m.m_width) { m_array = m.m_array; } - const Matrix &operator=(const Matrix &m) { + const Matrix &operator=(const Matrix &m) + { xaAssert(width() == m.width()); xaAssert(height() == m.height()); m_array = m.m_array; @@ -3826,9 +4006,10 @@ public: bool isSquare() const { return width() == height(); } // x is column, y is row - float getCoefficient(uint32_t x, uint32_t y) const { - xaDebugAssert(x < width()); - xaDebugAssert(y < height()); + float getCoefficient(uint32_t x, uint32_t y) const + { + xaDebugAssert( x < width() ); + xaDebugAssert( y < height() ); const uint32_t count = m_array[y].size(); for (uint32_t i = 0; i < count; i++) { if (m_array[y][i].x == x) return m_array[y][i].v; @@ -3836,9 +4017,10 @@ public: return 0.0f; } - void setCoefficient(uint32_t x, uint32_t y, float f) { - xaDebugAssert(x < width()); - xaDebugAssert(y < height()); + void setCoefficient(uint32_t x, uint32_t y, float f) + { + xaDebugAssert( x < width() ); + xaDebugAssert( y < height() ); const uint32_t count = m_array[y].size(); for (uint32_t i = 0; i < count; i++) { if (m_array[y][i].x == x) { @@ -3848,12 +4030,13 @@ public: } if (f != 0.0f) { Coefficient c = { x, f }; - m_array[y].push_back(c); + m_array[y].push_back( c ); } } - float dotRow(uint32_t y, const FullVector &v) const { - xaDebugAssert(y < height()); + float dotRow(uint32_t y, const FullVector &v) const + { + xaDebugAssert( y < height() ); const uint32_t count = m_array[y].size(); float sum = 0; for (uint32_t i = 0; i < count; i++) { @@ -3862,7 +4045,8 @@ public: return sum; } - void madRow(uint32_t y, float alpha, FullVector &v) const { + void madRow(uint32_t y, float alpha, FullVector &v) const + { xaDebugAssert(y < height()); const uint32_t count = m_array[y].size(); for (uint32_t i = 0; i < count; i++) { @@ -3870,13 +4054,15 @@ public: } } - void clearRow(uint32_t y) { - xaDebugAssert(y < height()); + void clearRow(uint32_t y) + { + xaDebugAssert( y < height() ); m_array[y].clear(); } - void scaleRow(uint32_t y, float f) { - xaDebugAssert(y < height()); + void scaleRow(uint32_t y, float f) + { + xaDebugAssert( y < height() ); const uint32_t count = m_array[y].size(); for (uint32_t i = 0; i < count; i++) { m_array[y][i].v *= f; @@ -3890,11 +4076,12 @@ private: const uint32_t m_width; /// Array of matrix elements. - std::vector<std::vector<Coefficient> > m_array; + std::vector< std::vector<Coefficient> > m_array; }; // y = a * x + y -static void saxpy(float a, const FullVector &x, FullVector &y) { +static void saxpy(float a, const FullVector &x, FullVector &y) +{ xaDebugAssert(x.dimension() == y.dimension()); const uint32_t dim = x.dimension(); for (uint32_t i = 0; i < dim; i++) { @@ -3902,7 +4089,8 @@ static void saxpy(float a, const FullVector &x, FullVector &y) { } } -static void copy(const FullVector &x, FullVector &y) { +static void copy(const FullVector &x, FullVector &y) +{ xaDebugAssert(x.dimension() == y.dimension()); const uint32_t dim = x.dimension(); for (uint32_t i = 0; i < dim; i++) { @@ -3910,14 +4098,16 @@ static void copy(const FullVector &x, FullVector &y) { } } -static void scal(float a, FullVector &x) { +static void scal(float a, FullVector &x) +{ const uint32_t dim = x.dimension(); for (uint32_t i = 0; i < dim; i++) { x[i] *= a; } } -static float dot(const FullVector &x, const FullVector &y) { +static float dot(const FullVector &x, const FullVector &y) +{ xaDebugAssert(x.dimension() == y.dimension()); const uint32_t dim = x.dimension(); float sum = 0; @@ -3927,19 +4117,20 @@ static float dot(const FullVector &x, const FullVector &y) { return sum; } -static void mult(Transpose TM, const Matrix &M, const FullVector &x, FullVector &y) { +static void mult(Transpose TM, const Matrix &M, const FullVector &x, FullVector &y) +{ const uint32_t w = M.width(); const uint32_t h = M.height(); if (TM == Transposed) { - xaDebugAssert(h == x.dimension()); - xaDebugAssert(w == y.dimension()); + xaDebugAssert( h == x.dimension() ); + xaDebugAssert( w == y.dimension() ); y.fill(0.0f); for (uint32_t i = 0; i < h; i++) { M.madRow(i, x[i], y); } } else { - xaDebugAssert(w == x.dimension()); - xaDebugAssert(h == y.dimension()); + xaDebugAssert( w == x.dimension() ); + xaDebugAssert( h == y.dimension() ); for (uint32_t i = 0; i < h; i++) { y[i] = M.dotRow(i, x); } @@ -3947,22 +4138,24 @@ static void mult(Transpose TM, const Matrix &M, const FullVector &x, FullVector } // y = M * x -static void mult(const Matrix &M, const FullVector &x, FullVector &y) { +static void mult(const Matrix &M, const FullVector &x, FullVector &y) +{ mult(NoTransposed, M, x, y); } -static void sgemv(float alpha, Transpose TA, const Matrix &A, const FullVector &x, float beta, FullVector &y) { +static void sgemv(float alpha, Transpose TA, const Matrix &A, const FullVector &x, float beta, FullVector &y) +{ const uint32_t w = A.width(); const uint32_t h = A.height(); if (TA == Transposed) { - xaDebugAssert(h == x.dimension()); - xaDebugAssert(w == y.dimension()); + xaDebugAssert( h == x.dimension() ); + xaDebugAssert( w == y.dimension() ); for (uint32_t i = 0; i < h; i++) { A.madRow(i, alpha * x[i], y); } } else { - xaDebugAssert(w == x.dimension()); - xaDebugAssert(h == y.dimension()); + xaDebugAssert( w == x.dimension() ); + xaDebugAssert( h == y.dimension() ); for (uint32_t i = 0; i < h; i++) { y[i] = alpha * A.dotRow(i, x) + beta * y[i]; } @@ -3970,12 +4163,14 @@ static void sgemv(float alpha, Transpose TA, const Matrix &A, const FullVector & } // y = alpha*A*x + beta*y -static void sgemv(float alpha, const Matrix &A, const FullVector &x, float beta, FullVector &y) { +static void sgemv(float alpha, const Matrix &A, const FullVector &x, float beta, FullVector &y) +{ sgemv(alpha, NoTransposed, A, x, beta, y); } // dot y-row of A by x-column of B -static float dotRowColumn(int y, const Matrix &A, int x, const Matrix &B) { +static float dotRowColumn(int y, const Matrix &A, int x, const Matrix &B) +{ const std::vector<Matrix::Coefficient> &row = A.getRow(y); const uint32_t count = row.size(); float sum = 0.0f; @@ -3987,7 +4182,8 @@ static float dotRowColumn(int y, const Matrix &A, int x, const Matrix &B) { } // dot y-row of A by x-row of B -static float dotRowRow(int y, const Matrix &A, int x, const Matrix &B) { +static float dotRowRow(int y, const Matrix &A, int x, const Matrix &B) +{ const std::vector<Matrix::Coefficient> &row = A.getRow(y); const uint32_t count = row.size(); float sum = 0.0f; @@ -3999,7 +4195,8 @@ static float dotRowRow(int y, const Matrix &A, int x, const Matrix &B) { } // dot y-column of A by x-column of B -static float dotColumnColumn(int y, const Matrix &A, int x, const Matrix &B) { +static float dotColumnColumn(int y, const Matrix &A, int x, const Matrix &B) +{ xaDebugAssert(A.height() == B.height()); const uint32_t h = A.height(); float sum = 0.0f; @@ -4009,7 +4206,8 @@ static float dotColumnColumn(int y, const Matrix &A, int x, const Matrix &B) { return sum; } -static void transpose(const Matrix &A, Matrix &B) { +static void transpose(const Matrix &A, Matrix &B) +{ xaDebugAssert(A.width() == B.height()); xaDebugAssert(B.width() == A.height()); const uint32_t w = A.width(); @@ -4028,7 +4226,8 @@ static void transpose(const Matrix &A, Matrix &B) { } } -static void sgemm(float alpha, Transpose TA, const Matrix &A, Transpose TB, const Matrix &B, float beta, Matrix &C) { +static void sgemm(float alpha, Transpose TA, const Matrix &A, Transpose TB, const Matrix &B, float beta, Matrix &C) +{ const uint32_t w = C.width(); const uint32_t h = C.height(); uint32_t aw = (TA == NoTransposed) ? A.width() : A.height(); @@ -4063,21 +4262,24 @@ static void sgemm(float alpha, Transpose TA, const Matrix &A, Transpose TB, cons } } -static void mult(Transpose TA, const Matrix &A, Transpose TB, const Matrix &B, Matrix &C) { +static void mult(Transpose TA, const Matrix &A, Transpose TB, const Matrix &B, Matrix &C) +{ sgemm(1.0f, TA, A, TB, B, 0.0f, C); } // C = A * B -static void mult(const Matrix &A, const Matrix &B, Matrix &C) { +static void mult(const Matrix &A, const Matrix &B, Matrix &C) +{ mult(NoTransposed, A, NoTransposed, B, C); } } // namespace sparse -class JacobiPreconditioner { +class JacobiPreconditioner +{ public: - JacobiPreconditioner(const sparse::Matrix &M, bool symmetric) : - m_inverseDiagonal(M.width()) { + JacobiPreconditioner(const sparse::Matrix &M, bool symmetric) : m_inverseDiagonal(M.width()) + { xaAssert(M.isSquare()); for (uint32_t x = 0; x < M.width(); x++) { float elem = M.getCoefficient(x, x); @@ -4090,7 +4292,8 @@ public: } } - void apply(const FullVector &x, FullVector &y) const { + void apply(const FullVector &x, FullVector &y) const + { xaDebugAssert(x.dimension() == m_inverseDiagonal.dimension()); xaDebugAssert(y.dimension() == m_inverseDiagonal.dimension()); // @@ Wrap vector component-wise product into a separate function. @@ -4105,10 +4308,12 @@ private: }; // Linear solvers. -class Solver { +class Solver +{ public: // Solve the symmetric system: At·A·x = At·b - static bool LeastSquaresSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon = 1e-5f) { + static bool LeastSquaresSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon = 1e-5f) + { xaDebugAssert(A.width() == x.dimension()); xaDebugAssert(A.height() == b.dimension()); xaDebugAssert(A.height() >= A.width()); // @@ If height == width we could solve it directly... @@ -4123,7 +4328,8 @@ public: } // See section 10.4.3 in: Mesh Parameterization: Theory and Practice, Siggraph Course Notes, August 2007 - static bool LeastSquaresSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, const uint32_t *lockedParameters, uint32_t lockedCount, float epsilon = 1e-5f) { + static bool LeastSquaresSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, const uint32_t *lockedParameters, uint32_t lockedCount, float epsilon = 1e-5f) + { xaDebugAssert(A.width() == x.dimension()); xaDebugAssert(A.height() == b.dimension()); xaDebugAssert(A.height() >= A.width() - lockedCount); @@ -4221,16 +4427,17 @@ private: * Jonhathan Richard Shewchuk. * **/ - static bool ConjugateGradientSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon) { - xaDebugAssert(A.isSquare()); - xaDebugAssert(A.width() == b.dimension()); - xaDebugAssert(A.width() == x.dimension()); + static bool ConjugateGradientSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon) + { + xaDebugAssert( A.isSquare() ); + xaDebugAssert( A.width() == b.dimension() ); + xaDebugAssert( A.width() == x.dimension() ); int i = 0; const int D = A.width(); - const int i_max = 4 * D; // Convergence should be linear, but in some cases, it's not. - FullVector r(D); // residual - FullVector p(D); // search direction - FullVector q(D); // + const int i_max = 4 * D; // Convergence should be linear, but in some cases, it's not. + FullVector r(D); // residual + FullVector p(D); // search direction + FullVector q(D); // float delta_0; float delta_old; float delta_new; @@ -4241,14 +4448,14 @@ private: sparse::sgemv(-1, A, x, 1, r); // p = r; sparse::copy(r, p); - delta_new = sparse::dot(r, r); + delta_new = sparse::dot( r, r ); delta_0 = delta_new; while (i < i_max && delta_new > epsilon * epsilon * delta_0) { i++; // q = A·p mult(A, p, q); // alpha = delta_new / p·q - alpha = delta_new / sparse::dot(p, q); + alpha = delta_new / sparse::dot( p, q ); // x = alfa·p + x sparse::saxpy(alpha, p, x); if ((i & 31) == 0) { // recompute r after 32 steps @@ -4260,7 +4467,7 @@ private: sparse::saxpy(-alpha, q, r); } delta_old = delta_new; - delta_new = sparse::dot(r, r); + delta_new = sparse::dot( r, r ); beta = delta_new / delta_old; // p = beta·p + r sparse::scal(beta, p); @@ -4269,18 +4476,20 @@ private: return delta_new <= epsilon * epsilon * delta_0; } + // Conjugate gradient with preconditioner. - static bool ConjugateGradientSolver(const JacobiPreconditioner &preconditioner, const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon) { - xaDebugAssert(A.isSquare()); - xaDebugAssert(A.width() == b.dimension()); - xaDebugAssert(A.width() == x.dimension()); + static bool ConjugateGradientSolver(const JacobiPreconditioner &preconditioner, const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon) + { + xaDebugAssert( A.isSquare() ); + xaDebugAssert( A.width() == b.dimension() ); + xaDebugAssert( A.width() == x.dimension() ); int i = 0; const int D = A.width(); - const int i_max = 4 * D; // Convergence should be linear, but in some cases, it's not. - FullVector r(D); // residual - FullVector p(D); // search direction - FullVector q(D); // - FullVector s(D); // preconditioned + const int i_max = 4 * D; // Convergence should be linear, but in some cases, it's not. + FullVector r(D); // residual + FullVector p(D); // search direction + FullVector q(D); // + FullVector s(D); // preconditioned float delta_0; float delta_old; float delta_new; @@ -4312,7 +4521,7 @@ private: // s = M^-1 · r preconditioner.apply(r, s); delta_old = delta_new; - delta_new = sparse::dot(r, s); + delta_new = sparse::dot( r, s ); beta = delta_new / delta_old; // p = s + beta·p sparse::scal(beta, p); @@ -4321,7 +4530,8 @@ private: return delta_new <= epsilon * epsilon * delta_0; } - static bool SymmetricSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon = 1e-5f) { + static bool SymmetricSolver(const sparse::Matrix &A, const FullVector &b, FullVector &x, float epsilon = 1e-5f) + { xaDebugAssert(A.height() == A.width()); xaDebugAssert(A.height() == b.dimension()); xaDebugAssert(b.dimension() == x.dimension()); @@ -4335,7 +4545,8 @@ class Atlas; class Chart; // Fast sweep in 3 directions -static bool findApproximateDiameterVertices(halfedge::Mesh *mesh, halfedge::Vertex **a, halfedge::Vertex **b) { +static bool findApproximateDiameterVertices(halfedge::Mesh *mesh, halfedge::Vertex **a, halfedge::Vertex **b) +{ xaDebugAssert(mesh != NULL); xaDebugAssert(a != NULL); xaDebugAssert(b != NULL); @@ -4364,18 +4575,12 @@ static bool findApproximateDiameterVertices(halfedge::Mesh *mesh, halfedge::Vert // Skip interior vertices. continue; } - if (vertex->pos.x < minVertex[0]->pos.x) - minVertex[0] = vertex; - else if (vertex->pos.x > maxVertex[0]->pos.x) - maxVertex[0] = vertex; - if (vertex->pos.y < minVertex[1]->pos.y) - minVertex[1] = vertex; - else if (vertex->pos.y > maxVertex[1]->pos.y) - maxVertex[1] = vertex; - if (vertex->pos.z < minVertex[2]->pos.z) - minVertex[2] = vertex; - else if (vertex->pos.z > maxVertex[2]->pos.z) - maxVertex[2] = vertex; + if (vertex->pos.x < minVertex[0]->pos.x) minVertex[0] = vertex; + else if (vertex->pos.x > maxVertex[0]->pos.x) maxVertex[0] = vertex; + if (vertex->pos.y < minVertex[1]->pos.y) minVertex[1] = vertex; + else if (vertex->pos.y > maxVertex[1]->pos.y) maxVertex[1] = vertex; + if (vertex->pos.z < minVertex[2]->pos.z) minVertex[2] = vertex; + else if (vertex->pos.z > maxVertex[2]->pos.z) maxVertex[2] = vertex; } float lengths[3]; for (int i = 0; i < 3; i++) { @@ -4396,24 +4601,28 @@ static bool findApproximateDiameterVertices(halfedge::Mesh *mesh, halfedge::Vert // Conformal relations from Brecht Van Lommel (based on ABF): -static float vec_angle_cos(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3) { +static float vec_angle_cos(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3) +{ Vector3 d1 = v1 - v2; Vector3 d2 = v3 - v2; return clamp(dot(d1, d2) / (length(d1) * length(d2)), -1.0f, 1.0f); } -static float vec_angle(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3) { +static float vec_angle(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3) +{ float dot = vec_angle_cos(v1, v2, v3); return acosf(dot); } -static void triangle_angles(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3, float *a1, float *a2, float *a3) { +static void triangle_angles(Vector3::Arg v1, Vector3::Arg v2, Vector3::Arg v3, float *a1, float *a2, float *a3) +{ *a1 = vec_angle(v3, v1, v2); *a2 = vec_angle(v1, v2, v3); *a3 = PI - *a2 - *a1; } -static void setup_abf_relations(sparse::Matrix &A, int row, const halfedge::Vertex *v0, const halfedge::Vertex *v1, const halfedge::Vertex *v2) { +static void setup_abf_relations(sparse::Matrix &A, int row, const halfedge::Vertex *v0, const halfedge::Vertex *v1, const halfedge::Vertex *v2) +{ int id0 = v0->id; int id1 = v1->id; int id2 = v2->id; @@ -4469,7 +4678,8 @@ static void setup_abf_relations(sparse::Matrix &A, int row, const halfedge::Vert A.setCoefficient(v2_id, 2 * row + 1, 1); } -bool computeLeastSquaresConformalMap(halfedge::Mesh *mesh) { +bool computeLeastSquaresConformalMap(halfedge::Mesh *mesh) +{ xaDebugAssert(mesh != NULL); // For this to work properly, mesh should not have colocals that have the same // attributes, unless you want the vertices to actually have different texcoords. @@ -4542,7 +4752,8 @@ bool computeLeastSquaresConformalMap(halfedge::Mesh *mesh) { return true; } -bool computeOrthogonalProjectionMap(halfedge::Mesh *mesh) { +bool computeOrthogonalProjectionMap(halfedge::Mesh *mesh) +{ Vector3 axis[2]; uint32_t vertexCount = mesh->vertexCount(); std::vector<Vector3> points(vertexCount); @@ -4572,7 +4783,8 @@ bool computeOrthogonalProjectionMap(halfedge::Mesh *mesh) { return true; } -void computeSingleFaceMap(halfedge::Mesh *mesh) { +void computeSingleFaceMap(halfedge::Mesh *mesh) +{ xaDebugAssert(mesh != NULL); xaDebugAssert(mesh->faceCount() == 1); halfedge::Face *face = mesh->faceAt(0); @@ -4603,11 +4815,12 @@ void computeSingleFaceMap(halfedge::Mesh *mesh) { // - Resorting is n*log(n) // @@ Number of elements in the queue is usually small, and we'd have to rebalance often. I'm not sure it's worth implementing a heap. // @@ Searcing at removal would remove the need for sorting when priorities change. -struct PriorityQueue { - PriorityQueue(uint32_t size = UINT_MAX) : - maxSize(size) {} +struct PriorityQueue +{ + PriorityQueue(uint32_t size = UINT_MAX) : maxSize(size) {} - void push(float priority, uint32_t face) { + void push(float priority, uint32_t face) + { uint32_t i = 0; const uint32_t count = pairs.size(); for (; i < count; i++) { @@ -4621,39 +4834,47 @@ struct PriorityQueue { } // push face out of order, to be sorted later. - void push(uint32_t face) { + void push(uint32_t face) + { Pair p = { 0.0f, face }; pairs.push_back(p); } - uint32_t pop() { + uint32_t pop() + { uint32_t f = pairs.back().face; pairs.pop_back(); return f; } - void sort() { + void sort() + { //sort(pairs); // @@ My intro sort appears to be much slower than it should! std::sort(pairs.begin(), pairs.end()); } - void clear() { + void clear() + { pairs.clear(); } - uint32_t count() const { + uint32_t count() const + { return pairs.size(); } - float firstPriority() const { + float firstPriority() const + { return pairs.back().priority; } const uint32_t maxSize; - struct Pair { - bool operator<(const Pair &p) const { - return priority > p.priority; // !! Sort in inverse priority order! + struct Pair + { + bool operator <(const Pair &p) const + { + return priority > p.priority; // !! Sort in inverse priority order! } float priority; @@ -4663,9 +4884,10 @@ struct PriorityQueue { std::vector<Pair> pairs; }; -struct ChartBuildData { - ChartBuildData(int p_id) : - id(p_id) { +struct ChartBuildData +{ + ChartBuildData(int id) : id(id) + { planeNormal = Vector3(0); centroid = Vector3(0); coneAxis = Vector3(0); @@ -4689,15 +4911,15 @@ struct ChartBuildData { Vector3 normalSum; Vector3 centroidSum; - std::vector<uint32_t> seeds; // @@ These could be a pointers to the halfedge faces directly. + std::vector<uint32_t> seeds; // @@ These could be a pointers to the halfedge faces directly. std::vector<uint32_t> faces; PriorityQueue candidates; }; -struct AtlasBuilder { - AtlasBuilder(const halfedge::Mesh *m) : - mesh(m), - facesLeft(m->faceCount()) { +struct AtlasBuilder +{ + AtlasBuilder(const halfedge::Mesh *m) : mesh(m), facesLeft(m->faceCount()) + { const uint32_t faceCount = m->faceCount(); faceChartArray.resize(faceCount, -1); faceCandidateArray.resize(faceCount, (uint32_t)-1); @@ -4720,14 +4942,16 @@ struct AtlasBuilder { } } - ~AtlasBuilder() { + ~AtlasBuilder() + { const uint32_t chartCount = chartArray.size(); for (uint32_t i = 0; i < chartCount; i++) { delete chartArray[i]; } } - void markUnchartedFaces(const std::vector<uint32_t> &unchartedFaces) { + void markUnchartedFaces(const std::vector<uint32_t> &unchartedFaces) + { const uint32_t unchartedFaceCount = unchartedFaces.size(); for (uint32_t i = 0; i < unchartedFaceCount; i++) { uint32_t f = unchartedFaces[i]; @@ -4739,7 +4963,8 @@ struct AtlasBuilder { facesLeft -= unchartedFaceCount; } - void computeShortestPaths() { + void computeShortestPaths() + { const uint32_t faceCount = mesh->faceCount(); shortestPaths.resize(faceCount * faceCount, FLT_MAX); // Fill edges: @@ -4767,7 +4992,8 @@ struct AtlasBuilder { } } - void placeSeeds(float threshold, uint32_t maxSeedCount) { + void placeSeeds(float threshold, uint32_t maxSeedCount) + { // Instead of using a predefiened number of seeds: // - Add seeds one by one, growing chart until a certain treshold. // - Undo charts and restart growing process. @@ -4783,18 +5009,17 @@ struct AtlasBuilder { } } - void createRandomChart(float threshold) { + void createRandomChart(float threshold) + { ChartBuildData *chart = new ChartBuildData(chartArray.size()); chartArray.push_back(chart); // Pick random face that is not used by any chart yet. uint32_t randomFaceIdx = rand.getRange(facesLeft - 1); uint32_t i = 0; for (uint32_t f = 0; f != randomFaceIdx; f++, i++) { - while (faceChartArray[i] != -1) - i++; + while (faceChartArray[i] != -1) i++; } - while (faceChartArray[i] != -1) - i++; + while (faceChartArray[i] != -1) i++; chart->seeds.push_back(i); addFaceToChart(chart, i, true); // Grow the chart as much as possible within the given threshold. @@ -4802,7 +5027,8 @@ struct AtlasBuilder { //growCharts(threshold - threshold * 0.75f / chartCount(), facesLeft); } - void addFaceToChart(ChartBuildData *chart, uint32_t f, bool recomputeProxy = false) { + void addFaceToChart(ChartBuildData *chart, uint32_t f, bool recomputeProxy = false) + { // Add face to chart. chart->faces.push_back(f); xaDebugAssert(faceChartArray[f] == -1); @@ -4824,7 +5050,8 @@ struct AtlasBuilder { } // Returns true if any of the charts can grow more. - bool growCharts(float threshold, uint32_t faceCount) { + bool growCharts(float threshold, uint32_t faceCount) + { // Using one global list. faceCount = std::min(faceCount, facesLeft); for (uint32_t i = 0; i < faceCount; i++) { @@ -4837,9 +5064,10 @@ struct AtlasBuilder { return facesLeft != 0; // Can continue growing. } - bool growChart(ChartBuildData *chart, float threshold, uint32_t faceCount) { + bool growChart(ChartBuildData *chart, float threshold, uint32_t faceCount) + { // Try to add faceCount faces within threshold to chart. - for (uint32_t i = 0; i < faceCount;) { + for (uint32_t i = 0; i < faceCount; ) { if (chart->candidates.count() == 0 || chart->candidates.firstPriority() > threshold) { return false; } @@ -4855,7 +5083,8 @@ struct AtlasBuilder { return true; } - void resetCharts() { + void resetCharts() + { const uint32_t faceCount = mesh->faceCount(); for (uint32_t i = 0; i < faceCount; i++) { faceChartArray[i] = -1; @@ -4877,7 +5106,8 @@ struct AtlasBuilder { } } - void updateCandidates(ChartBuildData *chart, uint32_t f) { + void updateCandidates(ChartBuildData *chart, uint32_t f) + { const halfedge::Face *face = mesh->faceAt(f); // Traverse neighboring faces, add the ones that do not belong to any chart yet. for (halfedge::Face::ConstEdgeIterator it(face->edges()); !it.isDone(); it.advance()) { @@ -4891,20 +5121,23 @@ struct AtlasBuilder { } } - void updateProxies() { + void updateProxies() + { const uint32_t chartCount = chartArray.size(); for (uint32_t i = 0; i < chartCount; i++) { updateProxy(chartArray[i]); } } - void updateProxy(ChartBuildData *chart) { + void updateProxy(ChartBuildData *chart) + { //#pragma message(NV_FILE_LINE "TODO: Use best fit plane instead of average normal.") chart->planeNormal = normalizeSafe(chart->normalSum, Vector3(0), 0.0f); chart->centroid = chart->centroidSum / float(chart->faces.size()); } - bool relocateSeeds() { + bool relocateSeeds() + { bool anySeedChanged = false; const uint32_t chartCount = chartArray.size(); for (uint32_t i = 0; i < chartCount; i++) { @@ -4915,9 +5148,10 @@ struct AtlasBuilder { return anySeedChanged; } - bool relocateSeed(ChartBuildData *chart) { + bool relocateSeed(ChartBuildData *chart) + { Vector3 centroid = computeChartCentroid(chart); - const uint32_t N = 10; // @@ Hardcoded to 10? + const uint32_t N = 10; // @@ Hardcoded to 10? PriorityQueue bestTriangles(N); // Find the first N triangles that fit the proxy best. const uint32_t faceCount = chart->faces.size(); @@ -4953,7 +5187,8 @@ struct AtlasBuilder { } } - void updatePriorities(ChartBuildData *chart) { + void updatePriorities(ChartBuildData *chart) + { // Re-evaluate candidate priorities. uint32_t candidateCount = chart->candidates.count(); for (uint32_t i = 0; i < candidateCount; i++) { @@ -4967,7 +5202,8 @@ struct AtlasBuilder { } // Evaluate combined metric. - float evaluatePriority(ChartBuildData *chart, uint32_t face) { + float evaluatePriority(ChartBuildData *chart, uint32_t face) + { // Estimate boundary length and area: float newBoundaryLength = evaluateBoundaryLength(chart, face); float newChartArea = evaluateChartArea(chart, face); @@ -4984,11 +5220,11 @@ struct AtlasBuilder { // - Cause more impedance. Never cross 90 degree edges. // - float cost = float( - options.proxyFitMetricWeight * F + - options.roundnessMetricWeight * C + - options.straightnessMetricWeight * P + - options.normalSeamMetricWeight * N + - options.textureSeamMetricWeight * T); + options.proxyFitMetricWeight * F + + options.roundnessMetricWeight * C + + options.straightnessMetricWeight * P + + options.normalSeamMetricWeight * N + + options.textureSeamMetricWeight * T); // Enforce limits strictly: if (newChartArea > options.maxChartArea) cost = FLT_MAX; if (newBoundaryLength > options.maxBoundaryLength) cost = FLT_MAX; @@ -4999,14 +5235,16 @@ struct AtlasBuilder { } // Returns a value in [0-1]. - float evaluateProxyFitMetric(ChartBuildData *chart, uint32_t f) { + float evaluateProxyFitMetric(ChartBuildData *chart, uint32_t f) + { const halfedge::Face *face = mesh->faceAt(f); Vector3 faceNormal = face->triangleNormal(); // Use plane fitting metric for now: return 1 - dot(faceNormal, chart->planeNormal); // @@ normal deviations should be weighted by face area } - float evaluateRoundnessMetric(ChartBuildData *chart, uint32_t /*face*/, float newBoundaryLength, float newChartArea) { + float evaluateRoundnessMetric(ChartBuildData *chart, uint32_t /*face*/, float newBoundaryLength, float newChartArea) + { float roundness = square(chart->boundaryLength) / chart->area; float newRoundness = square(newBoundaryLength) / newChartArea; if (newRoundness > roundness) { @@ -5017,7 +5255,8 @@ struct AtlasBuilder { } } - float evaluateStraightnessMetric(ChartBuildData *chart, uint32_t f) { + float evaluateStraightnessMetric(ChartBuildData *chart, uint32_t f) + { float l_out = 0.0f; float l_in = 0.0f; const halfedge::Face *face = mesh->faceAt(f); @@ -5040,7 +5279,8 @@ struct AtlasBuilder { return std::min(ratio, 0.0f); // Only use the straightness metric to close gaps. } - float evaluateNormalSeamMetric(ChartBuildData *chart, uint32_t f) { + float evaluateNormalSeamMetric(ChartBuildData *chart, uint32_t f) + { float seamFactor = 0.0f; float totalLength = 0.0f; const halfedge::Face *face = mesh->faceAt(f); @@ -5071,7 +5311,8 @@ struct AtlasBuilder { return seamFactor / totalLength; } - float evaluateTextureSeamMetric(ChartBuildData *chart, uint32_t f) { + float evaluateTextureSeamMetric(ChartBuildData *chart, uint32_t f) + { float seamLength = 0.0f; float totalLength = 0.0f; const halfedge::Face *face = mesh->faceAt(f); @@ -5101,12 +5342,14 @@ struct AtlasBuilder { return seamLength / totalLength; } - float evaluateChartArea(ChartBuildData *chart, uint32_t f) { + float evaluateChartArea(ChartBuildData *chart, uint32_t f) + { const halfedge::Face *face = mesh->faceAt(f); return chart->area + faceAreas[face->id]; } - float evaluateBoundaryLength(ChartBuildData *chart, uint32_t f) { + float evaluateBoundaryLength(ChartBuildData *chart, uint32_t f) + { float boundaryLength = chart->boundaryLength; // Add new edges, subtract edges shared with the chart. const halfedge::Face *face = mesh->faceAt(f); @@ -5125,20 +5368,23 @@ struct AtlasBuilder { } } } - return std::max(0.0f, boundaryLength); // @@ Hack! + return std::max(0.0f, boundaryLength); // @@ Hack! } - Vector3 evaluateChartNormalSum(ChartBuildData *chart, uint32_t f) { + Vector3 evaluateChartNormalSum(ChartBuildData *chart, uint32_t f) + { const halfedge::Face *face = mesh->faceAt(f); return chart->normalSum + face->triangleNormalAreaScaled(); } - Vector3 evaluateChartCentroidSum(ChartBuildData *chart, uint32_t f) { + Vector3 evaluateChartCentroidSum(ChartBuildData *chart, uint32_t f) + { const halfedge::Face *face = mesh->faceAt(f); return chart->centroidSum + face->centroid(); } - Vector3 computeChartCentroid(const ChartBuildData *chart) { + Vector3 computeChartCentroid(const ChartBuildData *chart) + { Vector3 centroid(0); const uint32_t faceCount = chart->faces.size(); for (uint32_t i = 0; i < faceCount; i++) { @@ -5148,12 +5394,14 @@ struct AtlasBuilder { return centroid / float(faceCount); } - void fillHoles(float threshold) { + void fillHoles(float threshold) + { while (facesLeft > 0) createRandomChart(threshold); } - void mergeCharts() { + void mergeCharts() + { std::vector<float> sharedBoundaryLengths; const uint32_t chartCount = chartArray.size(); for (int c = chartCount - 1; c >= 0; c--) { @@ -5219,9 +5467,9 @@ struct AtlasBuilder { // Update faceChartArray. const uint32_t faceCount = faceChartArray.size(); for (uint32_t i = 0; i < faceCount; i++) { - xaDebugAssert(faceChartArray[i] != -1); - xaDebugAssert(faceChartArray[i] != c); - xaDebugAssert(faceChartArray[i] <= int32_t(chartArray.size())); + xaDebugAssert (faceChartArray[i] != -1); + xaDebugAssert (faceChartArray[i] != c); + xaDebugAssert (faceChartArray[i] <= int32_t(chartArray.size())); if (faceChartArray[i] > c) { faceChartArray[i]--; } @@ -5241,7 +5489,8 @@ struct AtlasBuilder { }; // @@ Get N best candidates in one pass. - const Candidate &getBestCandidate() const { + const Candidate &getBestCandidate() const + { uint32_t best = 0; float bestCandidateMetric = FLT_MAX; const uint32_t candidateCount = candidateArray.size(); @@ -5256,7 +5505,8 @@ struct AtlasBuilder { return candidateArray[best]; } - void removeCandidate(uint32_t f) { + void removeCandidate(uint32_t f) + { int c = faceCandidateArray[f]; if (c != -1) { faceCandidateArray[f] = (uint32_t)-1; @@ -5271,7 +5521,8 @@ struct AtlasBuilder { } } - void updateCandidate(ChartBuildData *chart, uint32_t f, float metric) { + void updateCandidate(ChartBuildData *chart, uint32_t f, float metric) + { if (faceCandidateArray[f] == -1) { const uint32_t index = candidateArray.size(); faceCandidateArray[f] = index; @@ -5291,7 +5542,8 @@ struct AtlasBuilder { } } - void mergeChart(ChartBuildData *owner, ChartBuildData *chart, float sharedBoundaryLength) { + void mergeChart(ChartBuildData *owner, ChartBuildData *chart, float sharedBoundaryLength) + { const uint32_t faceCount = chart->faces.size(); for (uint32_t i = 0; i < faceCount; i++) { uint32_t f = chart->faces[i]; @@ -5307,6 +5559,7 @@ struct AtlasBuilder { updateProxy(owner); } + uint32_t chartCount() const { return chartArray.size(); } const std::vector<uint32_t> &chartFaces(uint32_t i) const { return chartArray[i]->faces; } @@ -5324,13 +5577,13 @@ struct AtlasBuilder { }; /// A chart is a connected set of faces with a certain topology (usually a disk). -class Chart { +class Chart +{ public: - Chart() : - m_isDisk(false), - m_isVertexMapped(false) {} + Chart() : m_isDisk(false), m_isVertexMapped(false) {} - void build(const halfedge::Mesh *originalMesh, const std::vector<uint32_t> &faceArray) { + void build(const halfedge::Mesh *originalMesh, const std::vector<uint32_t> &faceArray) + { // Copy face indices. m_faceArray = faceArray; const uint32_t meshVertexCount = originalMesh->vertexCount(); @@ -5353,7 +5606,7 @@ public: } if (chartMeshIndices[vertex->id] == ~0) { chartMeshIndices[vertex->id] = m_chartMesh->vertexCount(); - m_chartToOriginalMap.push_back(vertex->original_id); + m_chartToOriginalMap.push_back(vertex->id); m_chartToUnifiedMap.push_back(unifiedMeshIndices[unifiedVertex->id]); halfedge::Vertex *v = m_chartMesh->addVertex(vertex->pos); v->nor = vertex->nor; @@ -5417,7 +5670,8 @@ public: m_isDisk = topology.isDisk(); } - void buildVertexMap(const halfedge::Mesh *originalMesh, const std::vector<uint32_t> &unchartedMaterialArray) { + void buildVertexMap(const halfedge::Mesh *originalMesh, const std::vector<uint32_t> &unchartedMaterialArray) + { xaAssert(m_chartMesh.get() == NULL && m_unifiedMesh.get() == NULL); m_isVertexMapped = true; // Build face indices. @@ -5445,7 +5699,7 @@ public: const halfedge::Vertex *vertex = it.current()->vertex; if (chartMeshIndices[vertex->id] == ~0) { chartMeshIndices[vertex->id] = m_chartMesh->vertexCount(); - m_chartToOriginalMap.push_back(vertex->original_id); + m_chartToOriginalMap.push_back(vertex->id); halfedge::Vertex *v = m_chartMesh->addVertex(vertex->pos); v->nor = vertex->nor; v->tex = vertex->tex; // @@ Not necessary. @@ -5505,7 +5759,7 @@ public: halfedge::Vertex *vertex = m_chartMesh->vertexAt(idx); xaDebugAssert(vertexIndexArray[idx] == -1); std::vector<uint32_t> neighbors; - grid.gather(vertex->pos, positionThreshold, /*ref*/ neighbors); + grid.gather(vertex->pos, positionThreshold, /*ref*/neighbors); // Compare against all nearby vertices, cluster greedily. for (uint32_t j = 0; j < neighbors.size(); j++) { uint32_t otherIdx = neighbors[j]; @@ -5528,7 +5782,7 @@ public: xaDebugAssert(cellsVisited == grid.cellArray.size()); xaDebugAssert(verticesVisited == chartVertexCount); vertexMapWidth = ftoi_ceil(sqrtf(float(texelCount))); - vertexMapWidth = (vertexMapWidth + 3) & ~3; // Width aligned to 4. + vertexMapWidth = (vertexMapWidth + 3) & ~3; // Width aligned to 4. vertexMapHeight = vertexMapWidth == 0 ? 0 : (texelCount + vertexMapWidth - 1) / vertexMapWidth; //vertexMapHeight = (vertexMapHeight + 3) & ~3; // Height aligned to 4. xaDebugAssert(vertexMapWidth >= vertexMapHeight); @@ -5559,7 +5813,8 @@ public: } } - bool closeHoles() { + bool closeHoles() + { xaDebugAssert(!m_isVertexMapped); std::vector<halfedge::Edge *> boundaryEdges; getBoundaryEdges(m_unifiedMesh.get(), boundaryEdges); @@ -5610,7 +5865,7 @@ public: std::vector<halfedge::Edge *> edgeLoop; halfedge::Edge *edge = startEdge; do { - halfedge::Vertex *vertex = edge->next->vertex; // edge->to() + halfedge::Vertex *vertex = edge->next->vertex; // edge->to() uint32_t j; for (j = 0; j < vertexLoop.size(); j++) { if (vertex->isColocal(vertexLoop[j])) { @@ -5619,8 +5874,8 @@ public: } bool isCrossing = (j != vertexLoop.size()); if (isCrossing) { - halfedge::Edge *prev = edgeLoop[j]; // Previous edge before the loop. - halfedge::Edge *next = edge->next; // Next edge after the loop. + halfedge::Edge *prev = edgeLoop[j]; // Previous edge before the loop. + halfedge::Edge *next = edge->next; // Next edge after the loop. xaDebugAssert(prev->to()->isColocal(next->from())); // Close loop. edgeLoop.push_back(edge); @@ -5646,55 +5901,69 @@ public: return boundaryCount == 1; } - bool isDisk() const { + bool isDisk() const + { return m_isDisk; } - bool isVertexMapped() const { + bool isVertexMapped() const + { return m_isVertexMapped; } - uint32_t vertexCount() const { + uint32_t vertexCount() const + { return m_chartMesh->vertexCount(); } - uint32_t colocalVertexCount() const { + uint32_t colocalVertexCount() const + { return m_unifiedMesh->vertexCount(); } - uint32_t faceCount() const { + uint32_t faceCount() const + { return m_faceArray.size(); } - uint32_t faceAt(uint32_t i) const { + uint32_t faceAt(uint32_t i) const + { return m_faceArray[i]; } - const halfedge::Mesh *chartMesh() const { + const halfedge::Mesh *chartMesh() const + { return m_chartMesh.get(); } - halfedge::Mesh *chartMesh() { + halfedge::Mesh *chartMesh() + { return m_chartMesh.get(); } - const halfedge::Mesh *unifiedMesh() const { + const halfedge::Mesh *unifiedMesh() const + { return m_unifiedMesh.get(); } - halfedge::Mesh *unifiedMesh() { + halfedge::Mesh *unifiedMesh() + { return m_unifiedMesh.get(); } //uint32_t vertexIndex(uint32_t i) const { return m_vertexIndexArray[i]; } - uint32_t mapChartVertexToOriginalVertex(uint32_t i) const { + uint32_t mapChartVertexToOriginalVertex(uint32_t i) const + { return m_chartToOriginalMap[i]; } - uint32_t mapChartVertexToUnifiedVertex(uint32_t i) const { + uint32_t mapChartVertexToUnifiedVertex(uint32_t i) const + { return m_chartToUnifiedMap[i]; } - const std::vector<uint32_t> &faceArray() const { + const std::vector<uint32_t> &faceArray() const + { return m_faceArray; } // Transfer parameterization from unified mesh to chart mesh. - void transferParameterization() { + void transferParameterization() + { xaDebugAssert(!m_isVertexMapped); uint32_t vertexCount = m_chartMesh->vertexCount(); for (uint32_t v = 0; v < vertexCount; v++) { @@ -5704,18 +5973,21 @@ public: } } - float computeSurfaceArea() const { + float computeSurfaceArea() const + { return halfedge::computeSurfaceArea(m_chartMesh.get()) * scale; } - float computeParametricArea() const { + float computeParametricArea() const + { // This only makes sense in parameterized meshes. xaDebugAssert(m_isDisk); xaDebugAssert(!m_isVertexMapped); return halfedge::computeParametricArea(m_chartMesh.get()); } - Vector2 computeParametricBounds() const { + Vector2 computeParametricBounds() const + { // This only makes sense in parameterized meshes. xaDebugAssert(m_isDisk); xaDebugAssert(!m_isVertexMapped); @@ -5735,7 +6007,8 @@ public: bool blockAligned = true; private: - bool closeLoop(uint32_t start, const std::vector<halfedge::Edge *> &loop) { + bool closeLoop(uint32_t start, const std::vector<halfedge::Edge *> &loop) + { const uint32_t vertexCount = loop.size() - start; xaDebugAssert(vertexCount >= 3); if (vertexCount < 3) return false; @@ -5779,7 +6052,8 @@ private: return true; } - static void getBoundaryEdges(halfedge::Mesh *mesh, std::vector<halfedge::Edge *> &boundaryEdges) { + static void getBoundaryEdges(halfedge::Mesh *mesh, std::vector<halfedge::Edge *> &boundaryEdges) + { xaDebugAssert(mesh != NULL); const uint32_t edgeCount = mesh->edgeCount(); BitArray bitFlags(edgeCount); @@ -5810,7 +6084,7 @@ private: std::auto_ptr<halfedge::Mesh> m_unifiedMesh; bool m_isDisk; bool m_isVertexMapped; - + // List of faces of the original mesh that belong to this chart. std::vector<uint32_t> m_faceArray; @@ -5821,9 +6095,11 @@ private: }; // Estimate quality of existing parameterization. -class ParameterizationQuality { +class ParameterizationQuality +{ public: - ParameterizationQuality() { + ParameterizationQuality() + { m_totalTriangleCount = 0; m_flippedTriangleCount = 0; m_zeroAreaTriangleCount = 0; @@ -5835,7 +6111,8 @@ public: m_authalicMetric = 0.0f; } - ParameterizationQuality(const halfedge::Mesh *mesh) { + ParameterizationQuality(const halfedge::Mesh *mesh) + { xaDebugAssert(mesh != NULL); m_totalTriangleCount = 0; m_flippedTriangleCount = 0; @@ -5879,33 +6156,39 @@ public: xaDebugAssert(std::isfinite(m_authalicMetric)); } - bool isValid() const { + bool isValid() const + { return m_flippedTriangleCount == 0; // @@ Does not test for self-overlaps. } - float rmsStretchMetric() const { + float rmsStretchMetric() const + { if (m_geometricArea == 0) return 0.0f; float normFactor = sqrtf(m_parametricArea / m_geometricArea); return sqrtf(m_stretchMetric / m_geometricArea) * normFactor; } - float maxStretchMetric() const { + float maxStretchMetric() const + { if (m_geometricArea == 0) return 0.0f; float normFactor = sqrtf(m_parametricArea / m_geometricArea); return m_maxStretchMetric * normFactor; } - float rmsConformalMetric() const { + float rmsConformalMetric() const + { if (m_geometricArea == 0) return 0.0f; return sqrtf(m_conformalMetric / m_geometricArea); } - float maxAuthalicMetric() const { + float maxAuthalicMetric() const + { if (m_geometricArea == 0) return 0.0f; return sqrtf(m_authalicMetric / m_geometricArea); } - void operator+=(const ParameterizationQuality &pq) { + void operator+=(const ParameterizationQuality &pq) + { m_totalTriangleCount += pq.m_totalTriangleCount; m_flippedTriangleCount += pq.m_flippedTriangleCount; m_zeroAreaTriangleCount += pq.m_zeroAreaTriangleCount; @@ -5918,7 +6201,8 @@ public: } private: - void processTriangle(Vector3 q[3], Vector2 p[3]) { + void processTriangle(Vector3 q[3], Vector2 p[3]) + { m_totalTriangleCount++; // Evaluate texture stretch metric. See: // - "Texture Mapping Progressive Meshes", Sander, Snyder, Gortler & Hoppe @@ -5983,32 +6267,38 @@ private: }; // Set of charts corresponding to a single mesh. -class MeshCharts { +class MeshCharts +{ public: - MeshCharts(const halfedge::Mesh *mesh) : - m_mesh(mesh) {} + MeshCharts(const halfedge::Mesh *mesh) : m_mesh(mesh) {} - ~MeshCharts() { + ~MeshCharts() + { for (size_t i = 0; i < m_chartArray.size(); i++) delete m_chartArray[i]; } - uint32_t chartCount() const { + uint32_t chartCount() const + { return m_chartArray.size(); } - uint32_t vertexCount() const { + uint32_t vertexCount () const + { return m_totalVertexCount; } - const Chart *chartAt(uint32_t i) const { + const Chart *chartAt(uint32_t i) const + { return m_chartArray[i]; } - Chart *chartAt(uint32_t i) { + Chart *chartAt(uint32_t i) + { return m_chartArray[i]; } // Extract the charts of the input mesh. - void extractCharts() { + void extractCharts() + { const uint32_t faceCount = m_mesh->faceCount(); int first = 0; std::vector<uint32_t> queue; @@ -6108,7 +6398,8 @@ public: - emphasize roundness metrics to prevent those cases. - If interior self-overlaps: preserve boundary parameterization and use mean-value map. */ - void computeCharts(const CharterOptions &options, const std::vector<uint32_t> &unchartedMaterialArray) { + void computeCharts(const CharterOptions &options, const std::vector<uint32_t> &unchartedMaterialArray) + { Chart *vertexMap = NULL; if (unchartedMaterialArray.size() != 0) { vertexMap = new Chart(); @@ -6141,7 +6432,7 @@ public: xaPrint("### Placed %d seeds (max = %d)\n", builder.chartCount(), maxSeedCount); builder.updateProxies(); builder.mergeCharts(); -#if 1 + #if 1 xaPrint("### Relocating seeds\n"); builder.relocateSeeds(); xaPrint("### Reset charts\n"); @@ -6183,7 +6474,7 @@ public: xaPrint("### Growing charts\n"); } }; -#endif + #endif // Make sure no holes are left! xaDebugAssert(builder.facesLeft == 0); const uint32_t chartCount = builder.chartArray.size(); @@ -6220,21 +6511,25 @@ public: } } - void parameterizeCharts() { + void parameterizeCharts() + { ParameterizationQuality globalParameterizationQuality; // Parameterize the charts. uint32_t diskCount = 0; const uint32_t chartCount = m_chartArray.size(); - for (uint32_t i = 0; i < chartCount; i++) { + for (uint32_t i = 0; i < chartCount; i++) + { Chart *chart = m_chartArray[i]; bool isValid = false; - if (chart->isVertexMapped()) { + if (chart->isVertexMapped()) + { continue; } - if (chart->isDisk()) { + if (chart->isDisk()) + { diskCount++; ParameterizationQuality chartParameterizationQuality; if (chart->faceCount() == 1) { @@ -6258,6 +6553,7 @@ public: // Transfer parameterization from unified mesh to chart mesh. chart->transferParameterization(); + } xaPrint(" Parameterized %d/%d charts.\n", diskCount, chartCount); xaPrint(" RMS stretch metric: %f\n", globalParameterizationQuality.rmsStretchMetric()); @@ -6266,18 +6562,22 @@ public: xaPrint(" RMS authalic metric: %f\n", globalParameterizationQuality.maxAuthalicMetric()); } - uint32_t faceChartAt(uint32_t i) const { + uint32_t faceChartAt(uint32_t i) const + { return m_faceChart[i]; } - uint32_t faceIndexWithinChartAt(uint32_t i) const { + uint32_t faceIndexWithinChartAt(uint32_t i) const + { return m_faceIndex[i]; } - uint32_t vertexCountBeforeChartAt(uint32_t i) const { + uint32_t vertexCountBeforeChartAt(uint32_t i) const + { return m_chartVertexCountPrefixSum[i]; } private: + const halfedge::Mesh *m_mesh; std::vector<Chart *> m_chartArray; @@ -6290,26 +6590,32 @@ private: }; /// An atlas is a set of charts. -class Atlas { +class Atlas +{ public: - ~Atlas() { + ~Atlas() + { for (size_t i = 0; i < m_meshChartsArray.size(); i++) delete m_meshChartsArray[i]; } - uint32_t meshCount() const { + uint32_t meshCount() const + { return m_meshChartsArray.size(); } - const MeshCharts *meshAt(uint32_t i) const { + const MeshCharts *meshAt(uint32_t i) const + { return m_meshChartsArray[i]; } - MeshCharts *meshAt(uint32_t i) { + MeshCharts *meshAt(uint32_t i) + { return m_meshChartsArray[i]; } - uint32_t chartCount() const { + uint32_t chartCount() const + { uint32_t count = 0; for (uint32_t c = 0; c < m_meshChartsArray.size(); c++) { count += m_meshChartsArray[c]->chartCount(); @@ -6317,7 +6623,8 @@ public: return count; } - const Chart *chartAt(uint32_t i) const { + const Chart *chartAt(uint32_t i) const + { for (uint32_t c = 0; c < m_meshChartsArray.size(); c++) { uint32_t count = m_meshChartsArray[c]->chartCount(); if (i < count) { @@ -6328,7 +6635,8 @@ public: return NULL; } - Chart *chartAt(uint32_t i) { + Chart *chartAt(uint32_t i) + { for (uint32_t c = 0; c < m_meshChartsArray.size(); c++) { uint32_t count = m_meshChartsArray[c]->chartCount(); if (i < count) { @@ -6341,23 +6649,27 @@ public: // Add mesh charts and takes ownership. // Extract the charts and add to this atlas. - void addMeshCharts(MeshCharts *meshCharts) { + void addMeshCharts(MeshCharts *meshCharts) + { m_meshChartsArray.push_back(meshCharts); } - void extractCharts(const halfedge::Mesh *mesh) { + void extractCharts(const halfedge::Mesh *mesh) + { MeshCharts *meshCharts = new MeshCharts(mesh); meshCharts->extractCharts(); addMeshCharts(meshCharts); } - void computeCharts(const halfedge::Mesh *mesh, const CharterOptions &options, const std::vector<uint32_t> &unchartedMaterialArray) { + void computeCharts(const halfedge::Mesh *mesh, const CharterOptions &options, const std::vector<uint32_t> &unchartedMaterialArray) + { MeshCharts *meshCharts = new MeshCharts(mesh); meshCharts->computeCharts(options, unchartedMaterialArray); addMeshCharts(meshCharts); } - void parameterizeCharts() { + void parameterizeCharts() + { for (uint32_t i = 0; i < m_meshChartsArray.size(); i++) { m_meshChartsArray[i]->parameterizeCharts(); } @@ -6367,11 +6679,10 @@ private: std::vector<MeshCharts *> m_meshChartsArray; }; -struct AtlasPacker { - AtlasPacker(Atlas *atlas) : - m_atlas(atlas), - m_width(0), - m_height(0) { +struct AtlasPacker +{ + AtlasPacker(Atlas *atlas) : m_atlas(atlas), m_width(0), m_height(0) + { // Save the original uvs. m_originalChartUvs.resize(m_atlas->chartCount()); for (uint32_t i = 0; i < m_atlas->chartCount(); i++) { @@ -6386,7 +6697,8 @@ struct AtlasPacker { uint32_t getHeight() const { return m_height; } // Pack charts in the smallest possible rectangle. - void packCharts(const PackerOptions &options) { + void packCharts(const PackerOptions &options) + { const uint32_t chartCount = m_atlas->chartCount(); if (chartCount == 0) return; float texelsPerUnit = 1; @@ -6415,7 +6727,7 @@ struct AtlasPacker { meshArea += chartArea; //chartOrderArray[c] = chartArea; // Compute chart scale - float parametricArea = fabsf(chart->computeParametricArea()); // @@ There doesn't seem to be anything preventing parametric area to be negative. + float parametricArea = fabsf(chart->computeParametricArea()); // @@ There doesn't seem to be anything preventing parametric area to be negative. if (parametricArea < NV_EPSILON) { // When the parametric area is too small we use a rough approximation to prevent divisions by very small numbers. Vector2 bounds = chart->computeParametricBounds(); @@ -6564,18 +6876,18 @@ struct AtlasPacker { // 0 1 2 if (options.conservative) { // Init all bits to 0. - chart_bitmap.resize(ftoi_ceil(chartExtents[c].x) + 1 + options.padding, ftoi_ceil(chartExtents[c].y) + 1 + options.padding, /*initValue=*/false); // + 2 to add padding on both sides. + chart_bitmap.resize(ftoi_ceil(chartExtents[c].x) + 1 + options.padding, ftoi_ceil(chartExtents[c].y) + 1 + options.padding, /*initValue=*/false); // + 2 to add padding on both sides. // Rasterize chart and dilate. drawChartBitmapDilate(chart, &chart_bitmap, options.padding); } else { // Init all bits to 0. - chart_bitmap.resize(ftoi_ceil(chartExtents[c].x) + 1, ftoi_ceil(chartExtents[c].y) + 1, /*initValue=*/false); // Add half a texels on each side. + chart_bitmap.resize(ftoi_ceil(chartExtents[c].x) + 1, ftoi_ceil(chartExtents[c].y) + 1, /*initValue=*/false); // Add half a texels on each side. // Rasterize chart and dilate. drawChartBitmap(chart, &chart_bitmap, Vector2(1), Vector2(0.5)); } } int best_x, best_y; - int best_cw, best_ch; // Includes padding now. + int best_cw, best_ch; // Includes padding now. int best_r; findChartLocation(options.quality, &chart_bitmap, chartExtents[c], w, h, &best_x, &best_y, &best_cw, &best_ch, &best_r, chart->blockAligned); /*if (w < best_x + best_cw || h < best_y + best_ch) @@ -6629,7 +6941,8 @@ struct AtlasPacker { } } - float computeAtlasUtilization() const { + float computeAtlasUtilization() const + { const uint32_t w = m_width; const uint32_t h = m_height; xaDebugAssert(w <= m_bitmap.width()); @@ -6644,7 +6957,8 @@ struct AtlasPacker { } private: - void resetUvs() { + void resetUvs() + { for (uint32_t i = 0; i < m_atlas->chartCount(); i++) { halfedge::Mesh *mesh = m_atlas->chartAt(i)->chartMesh(); for (uint32_t j = 0; j < mesh->vertexCount(); j++) @@ -6656,7 +6970,8 @@ private: // is occupied at this point. At the end we have many small charts and a large atlas with sparse holes. Finding those holes randomly is slow. A better approach would be to // start stacking large charts as if they were tetris pieces. Once charts get small try to place them randomly. It may be interesting to try a intermediate strategy, first try // along one axis and then try exhaustively along that axis. - void findChartLocation(int quality, const BitMap *bitmap, Vector2::Arg extents, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, bool blockAligned) { + void findChartLocation(int quality, const BitMap *bitmap, Vector2::Arg extents, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, bool blockAligned) + { int attempts = 256; if (quality == 1) attempts = 4096; if (quality == 2) attempts = 2048; @@ -6669,7 +6984,8 @@ private: } } - void findChartLocation_bruteForce(const BitMap *bitmap, Vector2::Arg /*extents*/, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, bool blockAligned) { + void findChartLocation_bruteForce(const BitMap *bitmap, Vector2::Arg /*extents*/, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, bool blockAligned) + { const int BLOCK_SIZE = 4; int best_metric = INT_MAX; int step_size = blockAligned ? BLOCK_SIZE : 1; @@ -6708,10 +7024,11 @@ private: } } done: - xaDebugAssert(best_metric != INT_MAX); + xaDebugAssert (best_metric != INT_MAX); } - void findChartLocation_random(const BitMap *bitmap, Vector2::Arg /*extents*/, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, int minTrialCount, bool blockAligned) { + void findChartLocation_random(const BitMap *bitmap, Vector2::Arg /*extents*/, int w, int h, int *best_x, int *best_y, int *best_w, int *best_h, int *best_r, int minTrialCount, bool blockAligned) + { const int BLOCK_SIZE = 4; int best_metric = INT_MAX; for (int i = 0; i < minTrialCount || best_metric == INT_MAX; i++) { @@ -6752,7 +7069,8 @@ private: } } - void drawChartBitmapDilate(const Chart *chart, BitMap *bitmap, int padding) { + void drawChartBitmapDilate(const Chart *chart, BitMap *bitmap, int padding) + { const int w = bitmap->width(); const int h = bitmap->height(); const Vector2 extents = Vector2(float(w), float(h)); @@ -6802,7 +7120,8 @@ private: } } - void drawChartBitmap(const Chart *chart, BitMap *bitmap, const Vector2 &scale, const Vector2 &offset) { + void drawChartBitmap(const Chart *chart, BitMap *bitmap, const Vector2 &scale, const Vector2 &offset) + { const int w = bitmap->width(); const int h = bitmap->height(); const Vector2 extents = Vector2(float(w), float(h)); @@ -6863,7 +7182,8 @@ private: std::swap(tmp, *bitmap); } - bool canAddChart(const BitMap *bitmap, int atlas_w, int atlas_h, int offset_x, int offset_y, int r) { + bool canAddChart(const BitMap *bitmap, int atlas_w, int atlas_h, int offset_x, int offset_y, int r) + { xaDebugAssert(r == 0 || r == 1); // Check whether the two bitmaps overlap. const int w = bitmap->width(); @@ -6904,7 +7224,8 @@ private: return true; } - void addChart(const BitMap *bitmap, int atlas_w, int atlas_h, int offset_x, int offset_y, int r) { + void addChart(const BitMap *bitmap, int atlas_w, int atlas_h, int offset_x, int offset_y, int r) + { xaDebugAssert(r == 0 || r == 1); // Check whether the two bitmaps overlap. const int w = bitmap->width(); @@ -6946,8 +7267,9 @@ private: } } - static bool setBitsCallback(void *param, int x, int y, Vector3::Arg, Vector3::Arg, Vector3::Arg, float area) { - BitMap *bitmap = (BitMap *)param; + static bool setBitsCallback(void *param, int x, int y, Vector3::Arg, Vector3::Arg, Vector3::Arg, float area) + { + BitMap *bitmap = (BitMap * )param; if (area > 0.0) { bitmap->setBitAt(x, y); } @@ -6955,7 +7277,8 @@ private: } // Compute the convex hull using Graham Scan. - static void convexHull(const std::vector<Vector2> &input, std::vector<Vector2> &output, float epsilon) { + static void convexHull(const std::vector<Vector2> &input, std::vector<Vector2> &output, float epsilon) + { const uint32_t inputCount = input.size(); std::vector<float> coords(inputCount); for (uint32_t i = 0; i < inputCount; i++) { @@ -6984,7 +7307,7 @@ private: output.clear(); output.push_back(top[0]); output.push_back(top[1]); - for (uint32_t i = 2; i < top.size();) { + for (uint32_t i = 2; i < top.size(); ) { Vector2 a = output[output.size() - 2]; Vector2 b = output[output.size() - 1]; Vector2 c = top[i]; @@ -7000,7 +7323,7 @@ private: uint32_t top_count = output.size(); output.push_back(bottom[1]); // Filter bottom list. - for (uint32_t i = 2; i < bottom.size();) { + for (uint32_t i = 2; i < bottom.size(); ) { Vector2 a = output[output.size() - 2]; Vector2 b = output[output.size() - 1]; Vector2 c = bottom[i]; @@ -7019,7 +7342,8 @@ private: } // This should compute convex hull and use rotating calipers to find the best box. Currently it uses a brute force method. - static void computeBoundingBox(Chart *chart, Vector2 *majorAxis, Vector2 *minorAxis, Vector2 *minCorner, Vector2 *maxCorner) { + static void computeBoundingBox(Chart *chart, Vector2 *majorAxis, Vector2 *minorAxis, Vector2 *minCorner, Vector2 *maxCorner) + { // Compute list of boundary points. std::vector<Vector2> points; points.reserve(16); @@ -7096,7 +7420,8 @@ private: } // namespace param } // namespace internal -struct Atlas { +struct Atlas +{ internal::param::Atlas atlas; std::vector<internal::halfedge::Mesh *> heMeshes; uint32_t width = 0; @@ -7104,65 +7429,75 @@ struct Atlas { OutputMesh **outputMeshes = NULL; }; -void SetPrint(PrintFunc print) { +void SetPrint(PrintFunc print) +{ internal::s_print = print; } -Atlas *Create() { +Atlas *Create() +{ Atlas *atlas = new Atlas(); return atlas; } -void Destroy(Atlas *atlas) { +void Destroy(Atlas *atlas) +{ xaAssert(atlas); for (int i = 0; i < (int)atlas->heMeshes.size(); i++) { delete atlas->heMeshes[i]; if (atlas->outputMeshes) { OutputMesh *outputMesh = atlas->outputMeshes[i]; for (uint32_t j = 0; j < outputMesh->chartCount; j++) - delete[] outputMesh->chartArray[j].indexArray; - delete[] outputMesh->chartArray; - delete[] outputMesh->vertexArray; - delete[] outputMesh->indexArray; + delete [] outputMesh->chartArray[j].indexArray; + delete [] outputMesh->chartArray; + delete [] outputMesh->vertexArray; + delete [] outputMesh->indexArray; delete outputMesh; } } - delete[] atlas->outputMeshes; + delete [] atlas->outputMeshes; delete atlas; } -static internal::Vector3 DecodePosition(const InputMesh &mesh, uint32_t index) { +static internal::Vector3 DecodePosition(const InputMesh &mesh, uint32_t index) +{ xaAssert(mesh.vertexPositionData); return *((const internal::Vector3 *)&((const uint8_t *)mesh.vertexPositionData)[mesh.vertexPositionStride * index]); } -static internal::Vector3 DecodeNormal(const InputMesh &mesh, uint32_t index) { +static internal::Vector3 DecodeNormal(const InputMesh &mesh, uint32_t index) +{ xaAssert(mesh.vertexNormalData); return *((const internal::Vector3 *)&((const uint8_t *)mesh.vertexNormalData)[mesh.vertexNormalStride * index]); } -static internal::Vector2 DecodeUv(const InputMesh &mesh, uint32_t index) { +static internal::Vector2 DecodeUv(const InputMesh &mesh, uint32_t index) +{ xaAssert(mesh.vertexUvData); return *((const internal::Vector2 *)&((const uint8_t *)mesh.vertexUvData)[mesh.vertexUvStride * index]); } -static uint32_t DecodeIndex(IndexFormat::Enum format, const void *indexData, uint32_t i) { +static uint32_t DecodeIndex(IndexFormat::Enum format, const void *indexData, uint32_t i) +{ if (format == IndexFormat::HalfFloat) return (uint32_t)((const uint16_t *)indexData)[i]; return ((const uint32_t *)indexData)[i]; } -static float EdgeLength(internal::Vector3 pos1, internal::Vector3 pos2) { +static float EdgeLength(internal::Vector3 pos1, internal::Vector3 pos2) +{ return internal::length(pos2 - pos1); } -AddMeshError AddMesh(Atlas *atlas, const InputMesh &mesh, bool useColocalVertices) { +AddMeshError AddMesh(Atlas *atlas, const InputMesh &mesh, bool useColocalVertices) +{ xaAssert(atlas); AddMeshError error; error.code = AddMeshErrorCode::Success; error.face = error.index0 = error.index1 = UINT32_MAX; // Expecting triangle faces. - if ((mesh.indexCount % 3) != 0) { + if ((mesh.indexCount % 3) != 0) + { error.code = AddMeshErrorCode::InvalidIndexCount; return error; } @@ -7238,24 +7573,15 @@ AddMeshError AddMesh(Atlas *atlas, const InputMesh &mesh, bool useColocalVertice } } internal::halfedge::Face *face = heMesh->addFace(tri[0], tri[1], tri[2]); - - if (!face && heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::AlreadyAddedEdge) { - //there is still hope for this, no reason to not add, at least add as separate - face = heMesh->addUniqueFace(tri[0], tri[1], tri[2]); - } - if (!face) { - //continue; - - if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::AlreadyAddedEdge) { + if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::AlreadyAddedEdge) error.code = AddMeshErrorCode::AlreadyAddedEdge; - } else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DegenerateColocalEdge) { + else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DegenerateColocalEdge) error.code = AddMeshErrorCode::DegenerateColocalEdge; - } else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DegenerateEdge) { + else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DegenerateEdge) error.code = AddMeshErrorCode::DegenerateEdge; - } else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DuplicateEdge) { + else if (heMesh->errorCode == internal::halfedge::Mesh::ErrorCode::DuplicateEdge) error.code = AddMeshErrorCode::DuplicateEdge; - } error.face = i; error.index0 = heMesh->errorIndex0; error.index1 = heMesh->errorIndex1; @@ -7270,7 +7596,8 @@ AddMeshError AddMesh(Atlas *atlas, const InputMesh &mesh, bool useColocalVertice return error; } -void Generate(Atlas *atlas, CharterOptions charterOptions, PackerOptions packerOptions) { +void Generate(Atlas *atlas, CharterOptions charterOptions, PackerOptions packerOptions) +{ xaAssert(atlas); xaAssert(packerOptions.texelArea > 0); // Chart meshes. @@ -7285,7 +7612,7 @@ void Generate(Atlas *atlas, CharterOptions charterOptions, PackerOptions packerO atlas->width = packer.getWidth(); atlas->height = packer.getHeight(); // Build output meshes. - atlas->outputMeshes = new OutputMesh *[atlas->heMeshes.size()]; + atlas->outputMeshes = new OutputMesh*[atlas->heMeshes.size()]; for (int i = 0; i < (int)atlas->heMeshes.size(); i++) { const internal::halfedge::Mesh *heMesh = atlas->heMeshes[i]; OutputMesh *outputMesh = atlas->outputMeshes[i] = new OutputMesh; @@ -7341,27 +7668,32 @@ void Generate(Atlas *atlas, CharterOptions charterOptions, PackerOptions packerO } } -uint32_t GetWidth(const Atlas *atlas) { +uint32_t GetWidth(const Atlas *atlas) +{ xaAssert(atlas); return atlas->width; } -uint32_t GetHeight(const Atlas *atlas) { +uint32_t GetHeight(const Atlas *atlas) +{ xaAssert(atlas); return atlas->height; } -uint32_t GetNumCharts(const Atlas *atlas) { +uint32_t GetNumCharts(const Atlas *atlas) +{ xaAssert(atlas); return atlas->atlas.chartCount(); } -const OutputMesh *const *GetOutputMeshes(const Atlas *atlas) { +const OutputMesh * const *GetOutputMeshes(const Atlas *atlas) +{ xaAssert(atlas); return atlas->outputMeshes; } -const char *StringForEnum(AddMeshErrorCode::Enum error) { +const char *StringForEnum(AddMeshErrorCode::Enum error) +{ if (error == AddMeshErrorCode::AlreadyAddedEdge) return "already added edge"; if (error == AddMeshErrorCode::DegenerateColocalEdge) diff --git a/thirdparty/xatlas/xatlas.h b/thirdparty/xatlas/xatlas.h index 4140429fee..7e556c6c36 100644 --- a/thirdparty/xatlas/xatlas.h +++ b/thirdparty/xatlas/xatlas.h @@ -3,15 +3,15 @@ #ifndef XATLAS_H #define XATLAS_H #include <float.h> // FLT_MAX -#include <limits.h> -#include <stdint.h> + namespace xatlas { typedef void (*PrintFunc)(const char *, ...); struct Atlas; -struct CharterOptions { +struct CharterOptions +{ float proxyFitMetricWeight; float roundnessMetricWeight; float straightnessMetricWeight; @@ -20,7 +20,8 @@ struct CharterOptions { float maxChartArea; float maxBoundaryLength; - CharterOptions() { + CharterOptions() + { // These are the default values we use on The Witness. proxyFitMetricWeight = 2.0f; roundnessMetricWeight = 0.01f; @@ -39,15 +40,18 @@ struct CharterOptions { } }; -struct PackMethod { - enum Enum { +struct PackMethod +{ + enum Enum + { TexelArea, // texel_area determines resolution ApproximateResolution, // guess texel_area to approximately match desired resolution ExactResolution // run the packer multiple times to exactly match the desired resolution (slow) }; }; -struct PackerOptions { +struct PackerOptions +{ PackMethod::Enum method; // 0 - brute force @@ -59,13 +63,14 @@ struct PackerOptions { // Avoid brute force packing, since it can be unusably slow in some situations. int quality; - float texelArea; // This is not really texel area, but 1 / texel width? + float texelArea; // This is not really texel area, but 1 / texel width? uint32_t resolution; - bool blockAlign; // Align charts to 4x4 blocks. - bool conservative; // Pack charts with extra padding. + bool blockAlign; // Align charts to 4x4 blocks. + bool conservative; // Pack charts with extra padding. int padding; - PackerOptions() { + PackerOptions() + { method = PackMethod::ApproximateResolution; quality = 1; texelArea = 8; @@ -76,8 +81,10 @@ struct PackerOptions { } }; -struct AddMeshErrorCode { - enum Enum { +struct AddMeshErrorCode +{ + enum Enum + { Success, AlreadyAddedEdge, // index0 and index1 are the edge indices DegenerateColocalEdge, // index0 and index1 are the edge indices @@ -90,20 +97,24 @@ struct AddMeshErrorCode { }; }; -struct AddMeshError { +struct AddMeshError +{ AddMeshErrorCode::Enum code; uint32_t face; uint32_t index0, index1; }; -struct IndexFormat { - enum Enum { +struct IndexFormat +{ + enum Enum + { HalfFloat, Float }; }; -struct InputMesh { +struct InputMesh +{ uint32_t vertexCount; const void *vertexPositionData; uint32_t vertexPositionStride; @@ -124,17 +135,20 @@ struct InputMesh { const uint16_t *faceMaterialData; }; -struct OutputChart { +struct OutputChart +{ uint32_t *indexArray; uint32_t indexCount; }; -struct OutputVertex { +struct OutputVertex +{ float uv[2]; - uint32_t xref; // Index of input vertex from which this output vertex originated. + uint32_t xref; // Index of input vertex from which this output vertex originated. }; -struct OutputMesh { +struct OutputMesh +{ OutputChart *chartArray; uint32_t chartCount; uint32_t *indexArray; @@ -152,7 +166,7 @@ void Generate(Atlas *atlas, CharterOptions charterOptions = CharterOptions(), Pa uint32_t GetWidth(const Atlas *atlas); uint32_t GetHeight(const Atlas *atlas); uint32_t GetNumCharts(const Atlas *atlas); -const OutputMesh *const *GetOutputMeshes(const Atlas *atlas); +const OutputMesh * const *GetOutputMeshes(const Atlas *atlas); const char *StringForEnum(AddMeshErrorCode::Enum error); } // namespace xatlas |