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Diffstat (limited to 'thirdparty/bullet/LinearMath/btAabbUtil2.h')
-rw-r--r-- | thirdparty/bullet/LinearMath/btAabbUtil2.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/thirdparty/bullet/LinearMath/btAabbUtil2.h b/thirdparty/bullet/LinearMath/btAabbUtil2.h deleted file mode 100644 index eea49dd33f..0000000000 --- a/thirdparty/bullet/LinearMath/btAabbUtil2.h +++ /dev/null @@ -1,217 +0,0 @@ -/* -Copyright (c) 2003-2006 Gino van den Bergen / Erwin Coumans http://continuousphysics.com/Bullet/ - -This software is provided 'as-is', without any express or implied warranty. -In no event will the authors be held liable for any damages arising from the use of this software. -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it freely, -subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. -2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. -3. This notice may not be removed or altered from any source distribution. -*/ - -#ifndef BT_AABB_UTIL2 -#define BT_AABB_UTIL2 - -#include "btTransform.h" -#include "btVector3.h" -#include "btMinMax.h" - -SIMD_FORCE_INLINE void AabbExpand(btVector3& aabbMin, - btVector3& aabbMax, - const btVector3& expansionMin, - const btVector3& expansionMax) -{ - aabbMin = aabbMin + expansionMin; - aabbMax = aabbMax + expansionMax; -} - -/// conservative test for overlap between two aabbs -SIMD_FORCE_INLINE bool TestPointAgainstAabb2(const btVector3& aabbMin1, const btVector3& aabbMax1, - const btVector3& point) -{ - bool overlap = true; - overlap = (aabbMin1.getX() > point.getX() || aabbMax1.getX() < point.getX()) ? false : overlap; - overlap = (aabbMin1.getZ() > point.getZ() || aabbMax1.getZ() < point.getZ()) ? false : overlap; - overlap = (aabbMin1.getY() > point.getY() || aabbMax1.getY() < point.getY()) ? false : overlap; - return overlap; -} - -/// conservative test for overlap between two aabbs -SIMD_FORCE_INLINE bool TestAabbAgainstAabb2(const btVector3& aabbMin1, const btVector3& aabbMax1, - const btVector3& aabbMin2, const btVector3& aabbMax2) -{ - bool overlap = true; - overlap = (aabbMin1.getX() > aabbMax2.getX() || aabbMax1.getX() < aabbMin2.getX()) ? false : overlap; - overlap = (aabbMin1.getZ() > aabbMax2.getZ() || aabbMax1.getZ() < aabbMin2.getZ()) ? false : overlap; - overlap = (aabbMin1.getY() > aabbMax2.getY() || aabbMax1.getY() < aabbMin2.getY()) ? false : overlap; - return overlap; -} - -/// conservative test for overlap between triangle and aabb -SIMD_FORCE_INLINE bool TestTriangleAgainstAabb2(const btVector3* vertices, - const btVector3& aabbMin, const btVector3& aabbMax) -{ - const btVector3& p1 = vertices[0]; - const btVector3& p2 = vertices[1]; - const btVector3& p3 = vertices[2]; - - if (btMin(btMin(p1[0], p2[0]), p3[0]) > aabbMax[0]) return false; - if (btMax(btMax(p1[0], p2[0]), p3[0]) < aabbMin[0]) return false; - - if (btMin(btMin(p1[2], p2[2]), p3[2]) > aabbMax[2]) return false; - if (btMax(btMax(p1[2], p2[2]), p3[2]) < aabbMin[2]) return false; - - if (btMin(btMin(p1[1], p2[1]), p3[1]) > aabbMax[1]) return false; - if (btMax(btMax(p1[1], p2[1]), p3[1]) < aabbMin[1]) return false; - return true; -} - -SIMD_FORCE_INLINE int btOutcode(const btVector3& p, const btVector3& halfExtent) -{ - return (p.getX() < -halfExtent.getX() ? 0x01 : 0x0) | - (p.getX() > halfExtent.getX() ? 0x08 : 0x0) | - (p.getY() < -halfExtent.getY() ? 0x02 : 0x0) | - (p.getY() > halfExtent.getY() ? 0x10 : 0x0) | - (p.getZ() < -halfExtent.getZ() ? 0x4 : 0x0) | - (p.getZ() > halfExtent.getZ() ? 0x20 : 0x0); -} - -SIMD_FORCE_INLINE bool btRayAabb2(const btVector3& rayFrom, - const btVector3& rayInvDirection, - const unsigned int raySign[3], - const btVector3 bounds[2], - btScalar& tmin, - btScalar lambda_min, - btScalar lambda_max) -{ - btScalar tmax, tymin, tymax, tzmin, tzmax; - tmin = (bounds[raySign[0]].getX() - rayFrom.getX()) * rayInvDirection.getX(); - tmax = (bounds[1 - raySign[0]].getX() - rayFrom.getX()) * rayInvDirection.getX(); - tymin = (bounds[raySign[1]].getY() - rayFrom.getY()) * rayInvDirection.getY(); - tymax = (bounds[1 - raySign[1]].getY() - rayFrom.getY()) * rayInvDirection.getY(); - - if ((tmin > tymax) || (tymin > tmax)) - return false; - - if (tymin > tmin) - tmin = tymin; - - if (tymax < tmax) - tmax = tymax; - - tzmin = (bounds[raySign[2]].getZ() - rayFrom.getZ()) * rayInvDirection.getZ(); - tzmax = (bounds[1 - raySign[2]].getZ() - rayFrom.getZ()) * rayInvDirection.getZ(); - - if ((tmin > tzmax) || (tzmin > tmax)) - return false; - if (tzmin > tmin) - tmin = tzmin; - if (tzmax < tmax) - tmax = tzmax; - return ((tmin < lambda_max) && (tmax > lambda_min)); -} - -SIMD_FORCE_INLINE bool btRayAabb(const btVector3& rayFrom, - const btVector3& rayTo, - const btVector3& aabbMin, - const btVector3& aabbMax, - btScalar& param, btVector3& normal) -{ - btVector3 aabbHalfExtent = (aabbMax - aabbMin) * btScalar(0.5); - btVector3 aabbCenter = (aabbMax + aabbMin) * btScalar(0.5); - btVector3 source = rayFrom - aabbCenter; - btVector3 target = rayTo - aabbCenter; - int sourceOutcode = btOutcode(source, aabbHalfExtent); - int targetOutcode = btOutcode(target, aabbHalfExtent); - if ((sourceOutcode & targetOutcode) == 0x0) - { - btScalar lambda_enter = btScalar(0.0); - btScalar lambda_exit = param; - btVector3 r = target - source; - int i; - btScalar normSign = 1; - btVector3 hitNormal(0, 0, 0); - int bit = 1; - - for (int j = 0; j < 2; j++) - { - for (i = 0; i != 3; ++i) - { - if (sourceOutcode & bit) - { - btScalar lambda = (-source[i] - aabbHalfExtent[i] * normSign) / r[i]; - if (lambda_enter <= lambda) - { - lambda_enter = lambda; - hitNormal.setValue(0, 0, 0); - hitNormal[i] = normSign; - } - } - else if (targetOutcode & bit) - { - btScalar lambda = (-source[i] - aabbHalfExtent[i] * normSign) / r[i]; - btSetMin(lambda_exit, lambda); - } - bit <<= 1; - } - normSign = btScalar(-1.); - } - if (lambda_enter <= lambda_exit) - { - param = lambda_enter; - normal = hitNormal; - return true; - } - } - return false; -} - -SIMD_FORCE_INLINE void btTransformAabb(const btVector3& halfExtents, btScalar margin, const btTransform& t, btVector3& aabbMinOut, btVector3& aabbMaxOut) -{ - btVector3 halfExtentsWithMargin = halfExtents + btVector3(margin, margin, margin); - btMatrix3x3 abs_b = t.getBasis().absolute(); - btVector3 center = t.getOrigin(); - btVector3 extent = halfExtentsWithMargin.dot3(abs_b[0], abs_b[1], abs_b[2]); - aabbMinOut = center - extent; - aabbMaxOut = center + extent; -} - -SIMD_FORCE_INLINE void btTransformAabb(const btVector3& localAabbMin, const btVector3& localAabbMax, btScalar margin, const btTransform& trans, btVector3& aabbMinOut, btVector3& aabbMaxOut) -{ - btAssert(localAabbMin.getX() <= localAabbMax.getX()); - btAssert(localAabbMin.getY() <= localAabbMax.getY()); - btAssert(localAabbMin.getZ() <= localAabbMax.getZ()); - btVector3 localHalfExtents = btScalar(0.5) * (localAabbMax - localAabbMin); - localHalfExtents += btVector3(margin, margin, margin); - - btVector3 localCenter = btScalar(0.5) * (localAabbMax + localAabbMin); - btMatrix3x3 abs_b = trans.getBasis().absolute(); - btVector3 center = trans(localCenter); - btVector3 extent = localHalfExtents.dot3(abs_b[0], abs_b[1], abs_b[2]); - aabbMinOut = center - extent; - aabbMaxOut = center + extent; -} - -#define USE_BANCHLESS 1 -#ifdef USE_BANCHLESS -//This block replaces the block below and uses no branches, and replaces the 8 bit return with a 32 bit return for improved performance (~3x on XBox 360) -SIMD_FORCE_INLINE unsigned testQuantizedAabbAgainstQuantizedAabb(const unsigned short int* aabbMin1, const unsigned short int* aabbMax1, const unsigned short int* aabbMin2, const unsigned short int* aabbMax2) -{ - return static_cast<unsigned int>(btSelect((unsigned)((aabbMin1[0] <= aabbMax2[0]) & (aabbMax1[0] >= aabbMin2[0]) & (aabbMin1[2] <= aabbMax2[2]) & (aabbMax1[2] >= aabbMin2[2]) & (aabbMin1[1] <= aabbMax2[1]) & (aabbMax1[1] >= aabbMin2[1])), - 1, 0)); -} -#else -SIMD_FORCE_INLINE bool testQuantizedAabbAgainstQuantizedAabb(const unsigned short int* aabbMin1, const unsigned short int* aabbMax1, const unsigned short int* aabbMin2, const unsigned short int* aabbMax2) -{ - bool overlap = true; - overlap = (aabbMin1[0] > aabbMax2[0] || aabbMax1[0] < aabbMin2[0]) ? false : overlap; - overlap = (aabbMin1[2] > aabbMax2[2] || aabbMax1[2] < aabbMin2[2]) ? false : overlap; - overlap = (aabbMin1[1] > aabbMax2[1] || aabbMax1[1] < aabbMin2[1]) ? false : overlap; - return overlap; -} -#endif //USE_BANCHLESS - -#endif //BT_AABB_UTIL2 |