diff options
Diffstat (limited to 'core/math/bvh_abb.h')
-rw-r--r-- | core/math/bvh_abb.h | 64 |
1 files changed, 38 insertions, 26 deletions
diff --git a/core/math/bvh_abb.h b/core/math/bvh_abb.h index 009032d34d..8a44f1c4da 100644 --- a/core/math/bvh_abb.h +++ b/core/math/bvh_abb.h @@ -32,7 +32,7 @@ #define BVH_ABB_H // special optimized version of axis aligned bounding box -template <class Bounds = AABB, class Point = Vector3> +template <class BOUNDS = AABB, class POINT = Vector3> struct BVH_ABB { struct ConvexHull { // convex hulls (optional) @@ -43,8 +43,8 @@ struct BVH_ABB { }; struct Segment { - Point from; - Point to; + POINT from; + POINT to; }; enum IntersectResult { @@ -54,47 +54,47 @@ struct BVH_ABB { }; // we store mins with a negative value in order to test them with SIMD - Point min; - Point neg_max; + POINT min; + POINT neg_max; bool operator==(const BVH_ABB &o) const { return (min == o.min) && (neg_max == o.neg_max); } bool operator!=(const BVH_ABB &o) const { return (*this == o) == false; } - void set(const Point &_min, const Point &_max) { + void set(const POINT &_min, const POINT &_max) { min = _min; neg_max = -_max; } // to and from standard AABB - void from(const Bounds &p_aabb) { + void from(const BOUNDS &p_aabb) { min = p_aabb.position; neg_max = -(p_aabb.position + p_aabb.size); } - void to(Bounds &r_aabb) const { + void to(BOUNDS &r_aabb) const { r_aabb.position = min; r_aabb.size = calculate_size(); } void merge(const BVH_ABB &p_o) { - for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) { + for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) { neg_max[axis] = MIN(neg_max[axis], p_o.neg_max[axis]); min[axis] = MIN(min[axis], p_o.min[axis]); } } - Point calculate_size() const { + POINT calculate_size() const { return -neg_max - min; } - Point calculate_centre() const { - return Point((calculate_size() * 0.5) + min); + POINT calculate_centre() const { + return POINT((calculate_size() * 0.5) + min); } real_t get_proximity_to(const BVH_ABB &p_b) const { - const Point d = (min - neg_max) - (p_b.min - p_b.neg_max); + const POINT d = (min - neg_max) - (p_b.min - p_b.neg_max); real_t proximity = 0.0; - for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) { + for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) { proximity += Math::abs(d[axis]); } return proximity; @@ -104,7 +104,7 @@ struct BVH_ABB { return (get_proximity_to(p_a) < get_proximity_to(p_b) ? 0 : 1); } - uint32_t find_cutting_planes(const BVH_ABB::ConvexHull &p_hull, uint32_t *p_plane_ids) const { + uint32_t find_cutting_planes(const typename BVH_ABB::ConvexHull &p_hull, uint32_t *p_plane_ids) const { uint32_t count = 0; for (int n = 0; n < p_hull.num_planes; n++) { @@ -162,7 +162,7 @@ struct BVH_ABB { } bool intersects_convex_partial(const ConvexHull &p_hull) const { - Bounds bb; + BOUNDS bb; to(bb); return bb.intersects_convex_shape(p_hull.planes, p_hull.num_planes, p_hull.points, p_hull.num_points); } @@ -182,7 +182,7 @@ struct BVH_ABB { bool is_within_convex(const ConvexHull &p_hull) const { // use half extents routine - Bounds bb; + BOUNDS bb; to(bb); return bb.inside_convex_shape(p_hull.planes, p_hull.num_planes); } @@ -197,12 +197,12 @@ struct BVH_ABB { } bool intersects_segment(const Segment &p_s) const { - Bounds bb; + BOUNDS bb; to(bb); return bb.intersects_segment(p_s.from, p_s.to); } - bool intersects_point(const Point &p_pt) const { + bool intersects_point(const POINT &p_pt) const { if (_any_lessthan(-p_pt, neg_max)) { return false; } @@ -212,6 +212,7 @@ struct BVH_ABB { return true; } + // Very hot in profiling, make sure optimized bool intersects(const BVH_ABB &p_o) const { if (_any_morethan(p_o.min, -neg_max)) { return false; @@ -222,6 +223,17 @@ struct BVH_ABB { return true; } + // for pre-swizzled tester (this object) + bool intersects_swizzled(const BVH_ABB &p_o) const { + if (_any_lessthan(min, p_o.min)) { + return false; + } + if (_any_lessthan(neg_max, p_o.neg_max)) { + return false; + } + return true; + } + bool is_other_within(const BVH_ABB &p_o) const { if (_any_lessthan(p_o.neg_max, neg_max)) { return false; @@ -232,20 +244,20 @@ struct BVH_ABB { return true; } - void grow(const Point &p_change) { + void grow(const POINT &p_change) { neg_max -= p_change; min -= p_change; } void expand(real_t p_change) { - Point change; + POINT change; change.set_all(p_change); grow(change); } // Actually surface area metric. float get_area() const { - Point d = calculate_size(); + POINT d = calculate_size(); return 2.0f * (d.x * d.y + d.y * d.z + d.z * d.x); } @@ -254,8 +266,8 @@ struct BVH_ABB { min = neg_max; } - bool _any_morethan(const Point &p_a, const Point &p_b) const { - for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) { + bool _any_morethan(const POINT &p_a, const POINT &p_b) const { + for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) { if (p_a[axis] > p_b[axis]) { return true; } @@ -263,8 +275,8 @@ struct BVH_ABB { return false; } - bool _any_lessthan(const Point &p_a, const Point &p_b) const { - for (int axis = 0; axis < Point::AXIS_COUNT; ++axis) { + bool _any_lessthan(const POINT &p_a, const POINT &p_b) const { + for (int axis = 0; axis < POINT::AXIS_COUNT; ++axis) { if (p_a[axis] < p_b[axis]) { return true; } |