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+ // Redistribution and use in source and binary forms, with or without
+ // modification, are permitted provided that the following conditions
+ // are met:
+ // * Redistributions of source code must retain the above copyright
+ // notice, this list of conditions and the following disclaimer.
+ // * Redistributions in binary form must reproduce the above copyright
+ // notice, this list of conditions and the following disclaimer in the
+ // documentation and/or other materials provided with the distribution.
+ // * Neither the name of NVIDIA CORPORATION nor the names of its
+ // contributors may be used to endorse or promote products derived
+ // from this software without specific prior written permission.
+ //
+ // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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+ // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+ // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+ // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ //
+ // Copyright (c) 2008-2026 NVIDIA Corporation. All rights reserved.
+ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+ // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+ #ifndef GU_LOCAL_CLUSTER_H
+ #define GU_LOCAL_CLUSTER_H
+
+ #include "common/PxPhysXCommonConfig.h"
+ #include "foundation/PxTransform.h"
+ #include "foundation/PxInlineArray.h"
+ #include "geometry/PxTriangle.h"
+
+ namespace physx
+ {
+ class PxTriangleMeshGeometry;
+ class PxMeshScale;
+
+ namespace Gu
+ {
+ // PT: a local cluster is a triangle and its immediate neighbor.
+ // For a regular triangle with at most 3 neighbors the structure will not allocate extra memory.
+ struct LocalCluster
+ {
+ PxInlineArray<PxTriangle, 4> mTris; // Space for a source triangle and its 3 direct neighbors.
+ PxInlineArray<PxVec3, 4> mNormals; // Precomputed triangle normals.
+ float mExtent; // Precomputed size of the bounds around all triangles.
+
+ PX_PHYSX_COMMON_API void reset();
+ PX_PHYSX_COMMON_API void init(const float* src, PxU32 nbFloats);
+ PX_PHYSX_COMMON_API void addTriangle(PxU32 triangleIndex, const PxMeshScale& scale, const PxTransform* meshPose, const PxVec3* verts, const void* triangles, PxU32 has16BitIndices);
+ };
+
+ class EdgeList;
+
+ PX_PHYSX_COMMON_API void createLocalCluster(LocalCluster& mesh, const PxTriangleMeshGeometry& meshGeom, const PxTransform* meshPose, PxU32 triIndex, const EdgeList* edgeList = NULL);
+ PX_PHYSX_COMMON_API float depenetrateLocalClusters(const LocalCluster& mesh0, const LocalCluster& mesh1, const PxVec3& inputDir, bool iterative);
+
+ } // namespace Gu
+ }
+
+ #endif