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27// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
28// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
29
30
31#ifndef PX_COLLISION_NXTRIANGLEMESHDESC
32#define PX_COLLISION_NXTRIANGLEMESHDESC
33/** \addtogroup cooking
34@{
35*/
36
37#include "PxPhysXConfig.h"
38#include "geometry/PxSimpleTriangleMesh.h"
39
40#if !PX_DOXYGEN
41namespace physx
42{
43#endif
44
45/**
46\brief Descriptor class for #PxTriangleMesh.
47
48Note that this class is derived from PxSimpleTriangleMesh which contains the members that describe the basic mesh.
49The mesh data is *copied* when an PxTriangleMesh object is created from this descriptor. After the call the
50user may discard the triangle data.
51
52@see PxTriangleMesh PxTriangleMeshGeometry PxShape
53*/
54class PxTriangleMeshDesc : public PxSimpleTriangleMesh
55{
56public:
57
58 /**
59 Optional pointer to first material index, or NULL. There are PxSimpleTriangleMesh::numTriangles indices in total.
60 Caller may add materialIndexStride bytes to the pointer to access the next triangle.
61
62 When a triangle mesh collides with another object, a material is required at the collision point.
63 If materialIndices is NULL, then the material of the PxShape instance is used.
64 Otherwise, if the point of contact is on a triangle with index i, then the material index is determined as:
65 PxMaterialTableIndex index = *(PxMaterialTableIndex *)(((PxU8*)materialIndices) + materialIndexStride * i);
66
67 If the contact point falls on a vertex or an edge, a triangle adjacent to the vertex or edge is selected, and its index
68 used to look up a material. The selection is arbitrary but consistent over time.
69
70 <b>Default:</b> NULL
71
72 @see materialIndexStride
73 */
74 PxTypedStridedData<PxMaterialTableIndex> materialIndices;
75
76 /**
77 \brief Constructor sets to default.
78 */
79 PX_INLINE PxTriangleMeshDesc();
80
81 /**
82 \brief (re)sets the structure to the default.
83 */
84 PX_INLINE void setToDefault();
85
86 /**
87 \brief Returns true if the descriptor is valid.
88 \return true if the current settings are valid
89 */
90 PX_INLINE bool isValid() const;
91};
92
93PX_INLINE PxTriangleMeshDesc::PxTriangleMeshDesc() //constructor sets to default
94{
95 PxSimpleTriangleMesh::setToDefault();
96}
97
98PX_INLINE void PxTriangleMeshDesc::setToDefault()
99{
100 *this = PxTriangleMeshDesc();
101}
102
103PX_INLINE bool PxTriangleMeshDesc::isValid() const
104{
105 if(points.count < 3) //at least 1 trig's worth of points
106 return false;
107 if ((!triangles.data) && (points.count%3)) // Non-indexed mesh => we must ensure the geometry defines an implicit number of triangles // i.e. numVertices can't be divided by 3
108 return false;
109 //add more validity checks here
110 if (materialIndices.data && materialIndices.stride < sizeof(PxMaterialTableIndex))
111 return false;
112 return PxSimpleTriangleMesh::isValid();
113}
114
115#if !PX_DOXYGEN
116} // namespace physx
117#endif
118
119/** @} */
120#endif
121

source code of qtquick3dphysics/src/3rdparty/PhysX/include/cooking/PxTriangleMeshDesc.h