Revision control
++ // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
++ // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
++ // SPDX-FileCopyrightText: Copyright (c) 2008-2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
++ // SPDX-License-Identifier: Apache-2.0
++
++ #include "GuTriangleMesh.h"
++ #include "GuTriangleMeshRTree.h"
++
++ using namespace physx;
++
++ namespace physx
++ {
++
++ Gu::RTreeTriangleMesh::RTreeTriangleMesh(MeshFactory* factory, TriangleMeshData& d) : TriangleMesh(factory, d)
++ {
++ PX_ASSERT(d.mType==PxMeshMidPhase::eBVH33);
++
++ RTreeTriangleData& rtreeData = static_cast<RTreeTriangleData&>(d);
++ mRTree = rtreeData.mRTree;
++ rtreeData.mRTree.mPages = NULL;
++ }
++
++ Gu::TriangleMesh* Gu::RTreeTriangleMesh::createObject(PxU8*& address, PxDeserializationContext& context)
++ {
++ RTreeTriangleMesh* obj = PX_PLACEMENT_NEW(address, RTreeTriangleMesh(PxBaseFlag::eIS_RELEASABLE));
++ address += sizeof(RTreeTriangleMesh);
++ obj->importExtraData(context);
++ return obj;
++ }
++
++ void Gu::RTreeTriangleMesh::exportExtraData(PxSerializationContext& stream)
++ {
++ mRTree.exportExtraData(stream);
++ TriangleMesh::exportExtraData(stream);
++ }
++
++ void Gu::RTreeTriangleMesh::importExtraData(PxDeserializationContext& context)
++ {
++ mRTree.importExtraData(context);
++ TriangleMesh::importExtraData(context);
++ }
++
++ PxVec3 * Gu::RTreeTriangleMesh::getVerticesForModification()
++ {
++ return const_cast<PxVec3*>(getVertices());
++ }
++
++ template<typename IndexType>
++ struct RefitCallback : Gu::RTree::CallbackRefit
++ {
++ const PxVec3* newPositions;
++ const IndexType* indices;
++
++ RefitCallback(const PxVec3* aNewPositions, const IndexType* aIndices) : newPositions(aNewPositions), indices(aIndices) {}
++ PX_FORCE_INLINE ~RefitCallback() {}
++
++ virtual void recomputeBounds(PxU32 index, aos::Vec3V& aMn, aos::Vec3V& aMx) PX_OVERRIDE
++ {
++ using namespace aos;
++
++ // Each leaf box has a set of triangles
++ Gu::LeafTriangles currentLeaf; currentLeaf.Data = index;
++ PxU32 nbTris = currentLeaf.GetNbTriangles();
++ PxU32 baseTri = currentLeaf.GetTriangleIndex();
++ PX_ASSERT(nbTris > 0);
++ const IndexType* vInds = indices + 3 * baseTri;
++ Vec3V vPos = V3LoadU(newPositions[vInds[0]]);
++ Vec3V mn = vPos, mx = vPos;
++ //PxBounds3 result(newPositions[vInds[0]], newPositions[vInds[0]]);
++ vPos = V3LoadU(newPositions[vInds[1]]);
++ mn = V3Min(mn, vPos); mx = V3Max(mx, vPos);
++ vPos = V3LoadU(newPositions[vInds[2]]);
++ mn = V3Min(mn, vPos); mx = V3Max(mx, vPos);
++ for (PxU32 i = 1; i < nbTris; i++)
++ {
++ const IndexType* vInds1 = indices + 3 * (baseTri + i);
++ vPos = V3LoadU(newPositions[vInds1[0]]);
++ mn = V3Min(mn, vPos); mx = V3Max(mx, vPos);
++ vPos = V3LoadU(newPositions[vInds1[1]]);
++ mn = V3Min(mn, vPos); mx = V3Max(mx, vPos);
++ vPos = V3LoadU(newPositions[vInds1[2]]);
++ mn = V3Min(mn, vPos); mx = V3Max(mx, vPos);
++ }
++
++ aMn = mn;
++ aMx = mx;
++ }
++ };
++
++ PxBounds3 Gu::RTreeTriangleMesh::refitBVH()
++ {
++ PxBounds3 meshBounds;
++ if (has16BitIndices())
++ {
++ RefitCallback<PxU16> cb(mVertices, static_cast<const PxU16*>(mTriangles));
++ mRTree.refitAllStaticTree(cb, &meshBounds);
++ }
++ else
++ {
++ RefitCallback<PxU32> cb(mVertices, static_cast<const PxU32*>(mTriangles));
++ mRTree.refitAllStaticTree(cb, &meshBounds);
++ }
++
++ // reset edge flags and remember we did that using a mesh flag (optimization)
++ if ((mRTree.mFlags & RTree::IS_EDGE_SET) == 0)
++ {
++ mRTree.mFlags |= RTree::IS_EDGE_SET;
++ setAllEdgesActive();
++ }
++
++ mAABB = meshBounds;
++ return meshBounds;
++ }
++
++ } // namespace physx