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
++
++ #ifndef PX_SIMPLE_TRIANGLE_MESH_H
++ #define PX_SIMPLE_TRIANGLE_MESH_H
++
++ #include "foundation/PxVec3.h"
++ #include "foundation/PxFlags.h"
++ #include "common/PxCoreUtilityTypes.h"
++ #include "common/PxPhysXCommonConfig.h"
++
++ #if !PX_DOXYGEN
++ namespace physx
++ {
++ #endif
++
++ /**
++ \brief Enum with flag values to be used in PxSimpleTriangleMesh::flags.
++ */
++ struct PxMeshFlag
++ {
++ enum Enum
++ {
++ /**
++ \brief Specifies if the SDK should flip normals.
++
++ The PhysX libraries assume that the face normal of a triangle with vertices [a,b,c] can be computed as:
++ edge1 = b-a
++ edge2 = c-a
++ face_normal = edge1 x edge2.
++
++ Note: This is the same as a counterclockwise winding in a right handed coordinate system or
++ alternatively a clockwise winding order in a left handed coordinate system.
++
++ If this does not match the winding order for your triangles, raise the below flag.
++ */
++ eFLIPNORMALS = (1<<0),
++ e16_BIT_INDICES = (1<<1) //!< Denotes the use of 16-bit vertex indices
++ };
++ };
++
++ /**
++ \brief collection of set bits defined in PxMeshFlag.
++
++ \see PxMeshFlag
++ */
++ typedef PxFlags<PxMeshFlag::Enum,PxU16> PxMeshFlags;
++ PX_FLAGS_OPERATORS(PxMeshFlag::Enum,PxU16)
++
++
++ /**
++ \brief A structure describing a triangle mesh.
++ */
++ class PxSimpleTriangleMesh
++ {
++ public:
++
++ /**
++ \brief Pointer to first vertex point.
++ */
++ PxBoundedData points;
++
++ /**
++ \brief Pointer to first triangle.
++
++ Caller may add triangleStrideBytes bytes to the pointer to access the next triangle.
++
++ These are triplets of 0 based indices:
++ vert0 vert1 vert2
++ vert0 vert1 vert2
++ vert0 vert1 vert2
++ ...
++
++ where vertex is either a 32 or 16 bit unsigned integer. There are numTriangles*3 indices.
++
++ This is declared as a void pointer because it is actually either an PxU16 or a PxU32 pointer.
++ */
++ PxBoundedData triangles;
++
++ /**
++ \brief Flags bits, combined from values of the enum ::PxMeshFlag
++ */
++ PxMeshFlags flags;
++
++ /**
++ \brief constructor sets to default.
++ */
++ PX_INLINE PxSimpleTriangleMesh();
++ /**
++ \brief (re)sets the structure to the default.
++ */
++ PX_INLINE void setToDefault();
++ /**
++ \brief returns true if the current settings are valid
++ */
++ PX_INLINE bool isValid() const;
++ };
++
++
++ PX_INLINE PxSimpleTriangleMesh::PxSimpleTriangleMesh()
++ {
++ }
++
++ PX_INLINE void PxSimpleTriangleMesh::setToDefault()
++ {
++ *this = PxSimpleTriangleMesh();
++ }
++
++ PX_INLINE bool PxSimpleTriangleMesh::isValid() const
++ {
++ // Check geometry
++ if(points.count > 0xffff && flags & PxMeshFlag::e16_BIT_INDICES)
++ return false;
++ if(!points.data)
++ return false;
++ if(points.stride < sizeof(PxVec3)) //should be at least one point's worth of data
++ return false;
++
++ // Check topology
++ // The triangles pointer is not mandatory
++ if(triangles.data)
++ {
++ // Indexed mesh
++ PxU32 limit = (flags & PxMeshFlag::e16_BIT_INDICES) ? sizeof(PxU16)*3 : sizeof(PxU32)*3;
++ if(triangles.stride < limit)
++ return false;
++ }
++ return true;
++ }
++
++ #if !PX_DOXYGEN
++ } // namespace physx
++ #endif
++
++ #endif