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12 | // from this software without specific prior written permission. |
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14 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY |
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24 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | // |
26 | // Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved. |
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_PHYSICS_NX_TRIANGLEMESH_GEOMETRY |
32 | #define PX_PHYSICS_NX_TRIANGLEMESH_GEOMETRY |
33 | /** \addtogroup geomutils |
34 | @{ |
35 | */ |
36 | #include "geometry/PxGeometry.h" |
37 | #include "geometry/PxMeshScale.h" |
38 | #include "common/PxCoreUtilityTypes.h" |
39 | |
40 | #if !PX_DOXYGEN |
41 | namespace physx |
42 | { |
43 | #endif |
44 | |
45 | class PxTriangleMesh; |
46 | |
47 | |
48 | /** |
49 | \brief Flags controlling the simulated behavior of the triangle mesh geometry. |
50 | |
51 | Used in ::PxMeshGeometryFlags. |
52 | */ |
53 | struct PxMeshGeometryFlag |
54 | { |
55 | enum Enum |
56 | { |
57 | eDOUBLE_SIDED = (1<<1) //!< Meshes with this flag set are treated as double-sided. |
58 | //!< This flag is currently only used for raycasts and sweeps (it is ignored for overlap queries). |
59 | //!< For detailed specifications of this flag for meshes and heightfields please refer to the Geometry Query section of the user guide. |
60 | }; |
61 | }; |
62 | |
63 | /** |
64 | \brief collection of set bits defined in PxMeshGeometryFlag. |
65 | |
66 | @see PxMeshGeometryFlag |
67 | */ |
68 | typedef PxFlags<PxMeshGeometryFlag::Enum,PxU8> PxMeshGeometryFlags; |
69 | PX_FLAGS_OPERATORS(PxMeshGeometryFlag::Enum,PxU8) |
70 | |
71 | /** |
72 | \brief Triangle mesh geometry class. |
73 | |
74 | This class unifies a mesh object with a scaling transform, and |
75 | lets the combined object be used anywhere a PxGeometry is needed. |
76 | |
77 | The scaling is a transform along arbitrary axes contained in the scale object. |
78 | The vertices of the mesh in geometry (or shape) space is the |
79 | PxMeshScale::toMat33() transform, multiplied by the vertex space vertices |
80 | in the PxConvexMesh object. |
81 | */ |
82 | class PxTriangleMeshGeometry : public PxGeometry |
83 | { |
84 | public: |
85 | /** |
86 | \brief Default constructor. |
87 | |
88 | Creates an empty object with a NULL mesh and identity scale. |
89 | */ |
90 | PX_INLINE PxTriangleMeshGeometry() : |
91 | PxGeometry (PxGeometryType::eTRIANGLEMESH), |
92 | triangleMesh(NULL) |
93 | {} |
94 | |
95 | /** |
96 | \brief Constructor. |
97 | \param[in] mesh Mesh pointer. May be NULL, though this will not make the object valid for shape construction. |
98 | \param[in] scaling Scale factor. |
99 | \param[in] flags Mesh flags. |
100 | \ |
101 | */ |
102 | PX_INLINE PxTriangleMeshGeometry( PxTriangleMesh* mesh, |
103 | const PxMeshScale& scaling = PxMeshScale(), |
104 | PxMeshGeometryFlags flags = PxMeshGeometryFlags()) : |
105 | PxGeometry (PxGeometryType::eTRIANGLEMESH), |
106 | scale (scaling), |
107 | meshFlags (flags), |
108 | triangleMesh(mesh) |
109 | {} |
110 | |
111 | /** |
112 | \brief Returns true if the geometry is valid. |
113 | |
114 | \return True if the current settings are valid for shape creation. |
115 | |
116 | \note A valid triangle mesh has a positive scale value in each direction (scale.scale.x > 0, scale.scale.y > 0, scale.scale.z > 0). |
117 | It is illegal to call PxRigidActor::createShape and PxPhysics::createShape with a triangle mesh that has zero extents in any direction. |
118 | |
119 | @see PxRigidActor::createShape, PxPhysics::createShape |
120 | */ |
121 | PX_INLINE bool isValid() const; |
122 | |
123 | public: |
124 | PxMeshScale scale; //!< The scaling transformation. |
125 | PxMeshGeometryFlags meshFlags; //!< Mesh flags. |
126 | PxPadding<3> paddingFromFlags; //!< padding for mesh flags |
127 | PxTriangleMesh* triangleMesh; //!< A reference to the mesh object. |
128 | }; |
129 | |
130 | |
131 | PX_INLINE bool PxTriangleMeshGeometry::isValid() const |
132 | { |
133 | if(mType != PxGeometryType::eTRIANGLEMESH) |
134 | return false; |
135 | if(!scale.scale.isFinite() || !scale.rotation.isUnit()) |
136 | return false; |
137 | if(!scale.isValidForTriangleMesh()) |
138 | return false; |
139 | if(!triangleMesh) |
140 | return false; |
141 | |
142 | return true; |
143 | } |
144 | |
145 | #if !PX_DOXYGEN |
146 | } // namespace physx |
147 | #endif |
148 | |
149 | /** @} */ |
150 | #endif |
151 | |