Blender  V3.3
btSoftBodyHelpers.h
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1 /*
2 Bullet Continuous Collision Detection and Physics Library
3 Copyright (c) 2003-2008 Erwin Coumans http://continuousphysics.com/Bullet/
4 
5 This software is provided 'as-is', without any express or implied warranty.
6 In no event will the authors be held liable for any damages arising from the use of this software.
7 Permission is granted to anyone to use this software for any purpose,
8 including commercial applications, and to alter it and redistribute it freely,
9 subject to the following restrictions:
10 
11 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
13 3. This notice may not be removed or altered from any source distribution.
14 */
15 
16 #ifndef BT_SOFT_BODY_HELPERS_H
17 #define BT_SOFT_BODY_HELPERS_H
18 
19 #include "btSoftBody.h"
20 #include <fstream>
21 #include <string>
22 //
23 // Helpers
24 //
25 
26 /* fDrawFlags */
27 struct fDrawFlags
28 {
29  enum _
30  {
31  Nodes = 0x0001,
32  Links = 0x0002,
33  Faces = 0x0004,
34  Tetras = 0x0008,
35  Normals = 0x0010,
36  Contacts = 0x0020,
37  Anchors = 0x0040,
38  Notes = 0x0080,
39  Clusters = 0x0100,
40  NodeTree = 0x0200,
41  FaceTree = 0x0400,
42  ClusterTree = 0x0800,
43  Joints = 0x1000,
44  /* presets */
46  StdTetra = Std - Faces + Tetras
47  };
48 };
49 
51 {
52  /* Draw body */
53  static void Draw(btSoftBody* psb,
54  btIDebugDraw* idraw,
55  int drawflags = fDrawFlags::Std);
56  /* Draw body infos */
57  static void DrawInfos(btSoftBody* psb,
58  btIDebugDraw* idraw,
59  bool masses,
60  bool areas,
61  bool stress);
62  /* Draw node tree */
63  static void DrawNodeTree(btSoftBody* psb,
64  btIDebugDraw* idraw,
65  int mindepth = 0,
66  int maxdepth = -1);
67  /* Draw face tree */
68  static void DrawFaceTree(btSoftBody* psb,
69  btIDebugDraw* idraw,
70  int mindepth = 0,
71  int maxdepth = -1);
72  /* Draw cluster tree */
73  static void DrawClusterTree(btSoftBody* psb,
74  btIDebugDraw* idraw,
75  int mindepth = 0,
76  int maxdepth = -1);
77  /* Draw rigid frame */
78  static void DrawFrame(btSoftBody* psb,
79  btIDebugDraw* idraw);
80  /* Create a rope */
81  static btSoftBody* CreateRope(btSoftBodyWorldInfo& worldInfo,
82  const btVector3& from,
83  const btVector3& to,
84  int res,
85  int fixeds);
86  /* Create a patch */
87  static btSoftBody* CreatePatch(btSoftBodyWorldInfo& worldInfo,
88  const btVector3& corner00,
89  const btVector3& corner10,
90  const btVector3& corner01,
91  const btVector3& corner11,
92  int resx,
93  int resy,
94  int fixeds,
95  bool gendiags,
96  btScalar perturbation = 0.);
97  /* Create a patch with UV Texture Coordinates */
98  static btSoftBody* CreatePatchUV(btSoftBodyWorldInfo& worldInfo,
99  const btVector3& corner00,
100  const btVector3& corner10,
101  const btVector3& corner01,
102  const btVector3& corner11,
103  int resx,
104  int resy,
105  int fixeds,
106  bool gendiags,
107  float* tex_coords = 0);
108  static float CalculateUV(int resx, int resy, int ix, int iy, int id);
109  /* Create an ellipsoid */
111  const btVector3& center,
112  const btVector3& radius,
113  int res);
114  /* Create from trimesh */
116  const btScalar* vertices,
117  const int* triangles,
118  int ntriangles,
119  bool randomizeConstraints = true);
120  /* Create from convex-hull */
122  const btVector3* vertices,
123  int nvertices,
124  bool randomizeConstraints = true);
125 
126  /* Export TetGen compatible .smesh file */
127  // static void ExportAsSMeshFile( btSoftBody* psb,
128  // const char* filename);
129  /* Create from TetGen .ele, .face, .node files */
130  // static btSoftBody* CreateFromTetGenFile( btSoftBodyWorldInfo& worldInfo,
131  // const char* ele,
132  // const char* face,
133  // const char* node,
134  // bool bfacelinks,
135  // bool btetralinks,
136  // bool bfacesfromtetras);
137  /* Create from TetGen .ele, .face, .node data */
139  const char* ele,
140  const char* face,
141  const char* node,
142  bool bfacelinks,
143  bool btetralinks,
144  bool bfacesfromtetras);
145  static btSoftBody* CreateFromVtkFile(btSoftBodyWorldInfo& worldInfo, const char* vtk_file);
146 
147  static void writeObj(const char* file, const btSoftBody* psb);
148 
149  static void getBarycentricWeights(const btVector3& a, const btVector3& b, const btVector3& c, const btVector3& d, const btVector3& p, btVector4& bary);
150 
151  static void getBarycentricWeights(const btVector3& a, const btVector3& b, const btVector3& c, const btVector3& p, btVector4& bary);
152 
153  static void interpolateBarycentricWeights(btSoftBody* psb);
154 
155  static void extrapolateBarycentricWeights(btSoftBody* psb);
156 
157  static void generateBoundaryFaces(btSoftBody* psb);
158 
159  static void duplicateFaces(const char* filename, const btSoftBody* psb);
164  static void ReoptimizeLinkOrder(btSoftBody* psb);
165 };
166 
167 #endif //BT_SOFT_BODY_HELPERS_H
NSNotificationCenter * center
float btScalar
The btScalar type abstracts floating point numbers, to easily switch between double and single floati...
Definition: btScalar.h:314
btVector3
btVector3 can be used to represent 3D points and vectors. It has an un-used w component to suit 16-by...
Definition: btVector3.h:82
OperationNode * node
StackEntry * from
FILE * file
static unsigned c
Definition: RandGen.cpp:83
static unsigned a[3]
Definition: RandGen.cpp:78
static const pxr::TfToken b("b", pxr::TfToken::Immortal)
static btSoftBody * CreatePatchUV(btSoftBodyWorldInfo &worldInfo, const btVector3 &corner00, const btVector3 &corner10, const btVector3 &corner01, const btVector3 &corner11, int resx, int resy, int fixeds, bool gendiags, float *tex_coords=0)
static void writeObj(const char *file, const btSoftBody *psb)
static btSoftBody * CreateFromTriMesh(btSoftBodyWorldInfo &worldInfo, const btScalar *vertices, const int *triangles, int ntriangles, bool randomizeConstraints=true)
static void extrapolateBarycentricWeights(btSoftBody *psb)
static void DrawNodeTree(btSoftBody *psb, btIDebugDraw *idraw, int mindepth=0, int maxdepth=-1)
static void getBarycentricWeights(const btVector3 &a, const btVector3 &b, const btVector3 &c, const btVector3 &d, const btVector3 &p, btVector4 &bary)
static btSoftBody * CreateFromTetGenData(btSoftBodyWorldInfo &worldInfo, const char *ele, const char *face, const char *node, bool bfacelinks, bool btetralinks, bool bfacesfromtetras)
static btSoftBody * CreateFromConvexHull(btSoftBodyWorldInfo &worldInfo, const btVector3 *vertices, int nvertices, bool randomizeConstraints=true)
static btSoftBody * CreateFromVtkFile(btSoftBodyWorldInfo &worldInfo, const char *vtk_file)
static void ReoptimizeLinkOrder(btSoftBody *psb)
static void DrawFaceTree(btSoftBody *psb, btIDebugDraw *idraw, int mindepth=0, int maxdepth=-1)
static void DrawInfos(btSoftBody *psb, btIDebugDraw *idraw, bool masses, bool areas, bool stress)
static btSoftBody * CreateEllipsoid(btSoftBodyWorldInfo &worldInfo, const btVector3 &center, const btVector3 &radius, int res)
static void DrawClusterTree(btSoftBody *psb, btIDebugDraw *idraw, int mindepth=0, int maxdepth=-1)
static float CalculateUV(int resx, int resy, int ix, int iy, int id)
static btSoftBody * CreatePatch(btSoftBodyWorldInfo &worldInfo, const btVector3 &corner00, const btVector3 &corner10, const btVector3 &corner01, const btVector3 &corner11, int resx, int resy, int fixeds, bool gendiags, btScalar perturbation=0.)
static void generateBoundaryFaces(btSoftBody *psb)
static void Draw(btSoftBody *psb, btIDebugDraw *idraw, int drawflags=fDrawFlags::Std)
static void duplicateFaces(const char *filename, const btSoftBody *psb)
static void DrawFrame(btSoftBody *psb, btIDebugDraw *idraw)
static btSoftBody * CreateRope(btSoftBodyWorldInfo &worldInfo, const btVector3 &from, const btVector3 &to, int res, int fixeds)
static void interpolateBarycentricWeights(btSoftBody *psb)