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1 | /************************************************************************* | ||
2 | * * | ||
3 | * Open Dynamics Engine, Copyright (C) 2001-2003 Russell L. Smith. * | ||
4 | * All rights reserved. Email: russ@q12.org Web: www.q12.org * | ||
5 | * * | ||
6 | * This library is free software; you can redistribute it and/or * | ||
7 | * modify it under the terms of EITHER: * | ||
8 | * (1) The GNU Lesser General Public License as published by the Free * | ||
9 | * Software Foundation; either version 2.1 of the License, or (at * | ||
10 | * your option) any later version. The text of the GNU Lesser * | ||
11 | * General Public License is included with this library in the * | ||
12 | * file LICENSE.TXT. * | ||
13 | * (2) The BSD-style license that is included with this library in * | ||
14 | * the file LICENSE-BSD.TXT. * | ||
15 | * * | ||
16 | * This library is distributed in the hope that it will be useful, * | ||
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files * | ||
19 | * LICENSE.TXT and LICENSE-BSD.TXT for more details. * | ||
20 | * * | ||
21 | *************************************************************************/ | ||
22 | |||
23 | /* | ||
24 | * TriMesh code by Erwin de Vries. | ||
25 | * | ||
26 | * Trimesh data. | ||
27 | * This is where the actual vertexdata (pointers), and BV tree is stored. | ||
28 | * Vertices should be single precision! | ||
29 | * This should be more sophisticated, so that the user can easyly implement | ||
30 | * another collision library, but this is a lot of work, and also costs some | ||
31 | * performance because some data has to be copied. | ||
32 | */ | ||
33 | |||
34 | #ifndef _ODE_COLLISION_TRIMESH_H_ | ||
35 | #define _ODE_COLLISION_TRIMESH_H_ | ||
36 | |||
37 | #ifdef __cplusplus | ||
38 | extern "C" { | ||
39 | #endif | ||
40 | |||
41 | /* | ||
42 | * Data storage for triangle meshes. | ||
43 | */ | ||
44 | struct dxTriMeshData; | ||
45 | typedef struct dxTriMeshData* dTriMeshDataID; | ||
46 | |||
47 | /* | ||
48 | * These dont make much sense now, but they will later when we add more | ||
49 | * features. | ||
50 | */ | ||
51 | ODE_API dTriMeshDataID dGeomTriMeshDataCreate(void); | ||
52 | ODE_API void dGeomTriMeshDataDestroy(dTriMeshDataID g); | ||
53 | |||
54 | |||
55 | |||
56 | enum { TRIMESH_FACE_NORMALS }; | ||
57 | ODE_API void dGeomTriMeshDataSet(dTriMeshDataID g, int data_id, void* in_data); | ||
58 | ODE_API void* dGeomTriMeshDataGet(dTriMeshDataID g, int data_id); | ||
59 | |||
60 | |||
61 | |||
62 | /** | ||
63 | * We need to set the last transform after each time step for | ||
64 | * accurate collision response. These functions get and set that transform. | ||
65 | * It is stored per geom instance, rather than per dTriMeshDataID. | ||
66 | */ | ||
67 | ODE_API void dGeomTriMeshSetLastTransform( dGeomID g, dMatrix4 last_trans ); | ||
68 | ODE_API dReal* dGeomTriMeshGetLastTransform( dGeomID g ); | ||
69 | |||
70 | /* | ||
71 | * Build TriMesh data with single precision used in vertex data . | ||
72 | */ | ||
73 | ODE_API void dGeomTriMeshDataBuildSingle(dTriMeshDataID g, | ||
74 | const void* Vertices, int VertexStride, int VertexCount, | ||
75 | const void* Indices, int IndexCount, int TriStride); | ||
76 | /* same again with a normals array (used as trimesh-trimesh optimization) */ | ||
77 | ODE_API void dGeomTriMeshDataBuildSingle1(dTriMeshDataID g, | ||
78 | const void* Vertices, int VertexStride, int VertexCount, | ||
79 | const void* Indices, int IndexCount, int TriStride, | ||
80 | const void* Normals); | ||
81 | /* | ||
82 | * Build TriMesh data with double pricision used in vertex data . | ||
83 | */ | ||
84 | ODE_API void dGeomTriMeshDataBuildDouble(dTriMeshDataID g, | ||
85 | const void* Vertices, int VertexStride, int VertexCount, | ||
86 | const void* Indices, int IndexCount, int TriStride); | ||
87 | /* same again with a normals array (used as trimesh-trimesh optimization) */ | ||
88 | ODE_API void dGeomTriMeshDataBuildDouble1(dTriMeshDataID g, | ||
89 | const void* Vertices, int VertexStride, int VertexCount, | ||
90 | const void* Indices, int IndexCount, int TriStride, | ||
91 | const void* Normals); | ||
92 | |||
93 | /* | ||
94 | * Simple build. Single/double precision based on dSINGLE/dDOUBLE! | ||
95 | */ | ||
96 | ODE_API void dGeomTriMeshDataBuildSimple(dTriMeshDataID g, | ||
97 | const dReal* Vertices, int VertexCount, | ||
98 | const int* Indices, int IndexCount); | ||
99 | /* same again with a normals array (used as trimesh-trimesh optimization) */ | ||
100 | ODE_API void dGeomTriMeshDataBuildSimple1(dTriMeshDataID g, | ||
101 | const dReal* Vertices, int VertexCount, | ||
102 | const int* Indices, int IndexCount, | ||
103 | const int* Normals); | ||
104 | |||
105 | /* Preprocess the trimesh data to remove mark unnecessary edges and vertices */ | ||
106 | ODE_API void dGeomTriMeshDataPreprocess(dTriMeshDataID g); | ||
107 | /* Get and set the internal preprocessed trimesh data buffer, for loading and saving */ | ||
108 | ODE_API void dGeomTriMeshDataGetBuffer(dTriMeshDataID g, unsigned char** buf, int* bufLen); | ||
109 | ODE_API void dGeomTriMeshDataSetBuffer(dTriMeshDataID g, unsigned char* buf); | ||
110 | |||
111 | |||
112 | /* | ||
113 | * Per triangle callback. Allows the user to say if he wants a collision with | ||
114 | * a particular triangle. | ||
115 | */ | ||
116 | typedef int dTriCallback(dGeomID TriMesh, dGeomID RefObject, int TriangleIndex); | ||
117 | ODE_API void dGeomTriMeshSetCallback(dGeomID g, dTriCallback* Callback); | ||
118 | ODE_API dTriCallback* dGeomTriMeshGetCallback(dGeomID g); | ||
119 | |||
120 | /* | ||
121 | * Per object callback. Allows the user to get the list of triangles in 1 | ||
122 | * shot. Maybe we should remove this one. | ||
123 | */ | ||
124 | typedef void dTriArrayCallback(dGeomID TriMesh, dGeomID RefObject, const int* TriIndices, int TriCount); | ||
125 | ODE_API void dGeomTriMeshSetArrayCallback(dGeomID g, dTriArrayCallback* ArrayCallback); | ||
126 | ODE_API dTriArrayCallback* dGeomTriMeshGetArrayCallback(dGeomID g); | ||
127 | |||
128 | /* | ||
129 | * Ray callback. | ||
130 | * Allows the user to say if a ray collides with a triangle on barycentric | ||
131 | * coords. The user can for example sample a texture with alpha transparency | ||
132 | * to determine if a collision should occur. | ||
133 | */ | ||
134 | typedef int dTriRayCallback(dGeomID TriMesh, dGeomID Ray, int TriangleIndex, dReal u, dReal v); | ||
135 | ODE_API void dGeomTriMeshSetRayCallback(dGeomID g, dTriRayCallback* Callback); | ||
136 | ODE_API dTriRayCallback* dGeomTriMeshGetRayCallback(dGeomID g); | ||
137 | |||
138 | /* | ||
139 | * Trimesh class | ||
140 | * Construction. Callbacks are optional. | ||
141 | */ | ||
142 | ODE_API dGeomID dCreateTriMesh(dSpaceID space, dTriMeshDataID Data, dTriCallback* Callback, dTriArrayCallback* ArrayCallback, dTriRayCallback* RayCallback); | ||
143 | |||
144 | ODE_API void dGeomTriMeshSetData(dGeomID g, dTriMeshDataID Data); | ||
145 | ODE_API dTriMeshDataID dGeomTriMeshGetData(dGeomID g); | ||
146 | |||
147 | |||
148 | // enable/disable/check temporal coherence | ||
149 | ODE_API void dGeomTriMeshEnableTC(dGeomID g, int geomClass, int enable); | ||
150 | ODE_API int dGeomTriMeshIsTCEnabled(dGeomID g, int geomClass); | ||
151 | |||
152 | /* | ||
153 | * Clears the internal temporal coherence caches. When a geom has its | ||
154 | * collision checked with a trimesh once, data is stored inside the trimesh. | ||
155 | * With large worlds with lots of seperate objects this list could get huge. | ||
156 | * We should be able to do this automagically. | ||
157 | */ | ||
158 | ODE_API void dGeomTriMeshClearTCCache(dGeomID g); | ||
159 | |||
160 | |||
161 | /* | ||
162 | * returns the TriMeshDataID | ||
163 | */ | ||
164 | ODE_API dTriMeshDataID dGeomTriMeshGetTriMeshDataID(dGeomID g); | ||
165 | |||
166 | /* | ||
167 | * Gets a triangle. | ||
168 | */ | ||
169 | ODE_API void dGeomTriMeshGetTriangle(dGeomID g, int Index, dVector3* v0, dVector3* v1, dVector3* v2); | ||
170 | |||
171 | /* | ||
172 | * Gets the point on the requested triangle and the given barycentric | ||
173 | * coordinates. | ||
174 | */ | ||
175 | ODE_API void dGeomTriMeshGetPoint(dGeomID g, int Index, dReal u, dReal v, dVector3 Out); | ||
176 | |||
177 | /* | ||
178 | |||
179 | This is how the strided data works: | ||
180 | |||
181 | struct StridedVertex{ | ||
182 | dVector3 Vertex; | ||
183 | // Userdata | ||
184 | }; | ||
185 | int VertexStride = sizeof(StridedVertex); | ||
186 | |||
187 | struct StridedTri{ | ||
188 | int Indices[3]; | ||
189 | // Userdata | ||
190 | }; | ||
191 | int TriStride = sizeof(StridedTri); | ||
192 | |||
193 | */ | ||
194 | |||
195 | |||
196 | ODE_API int dGeomTriMeshGetTriangleCount (dGeomID g); | ||
197 | |||
198 | ODE_API void dGeomTriMeshDataUpdate(dTriMeshDataID g); | ||
199 | |||
200 | #ifdef __cplusplus | ||
201 | } | ||
202 | #endif | ||
203 | |||
204 | #endif /* _ODE_COLLISION_TRIMESH_H_ */ | ||
205 | |||