1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
/*
class Player : public Scene
{
public:
Player(const char* filename) : Scene("Player"), mFilename(filename), mRecording(NULL)
{
}
virtual void Initialize()
{
if (!mRecording)
mRecording = fopen(mFilename, "rb");
if (mRecording)
fseek(mRecording, 0, SEEK_SET);
// read first frame
ReadFrame();
g_lightDistance = 100.0f;
g_fogDistance = 0.0f;
g_camSpeed *= 100.0f;
g_camNear *= 100.0f;
g_camFar *= 100.0f;
g_pause = true;
g_dt = 1.0f/30.0f;
g_numSubsteps = 2;
g_drawPoints = true;
mInitialActive = g_buffers->activeIndices;
}
virtual void PostInitialize()
{
g_buffers->activeIndices = mInitialActive;
NvFlexSetActive(g_solver, &mInitialActive[0], mInitialActive.size(), eFlexMemoryHost);
}
virtual Matrix44 GetBasis()
{
// Coordinate fip for Unreal captures
Matrix44 flip = Matrix44::kIdentity;
flip.SetCol(1, Vec4(0.0f, 0.0f, -1.0f, 0.0f));
flip.SetCol(2, Vec4(0.0f, 1.0f, 0.0f, 0.0f));
return flip;
}
template<typename Element>
void ReadArray(std::vector<Element>& dest, bool enable=true)
{
if (feof(mRecording))
return;
int length;
int r;
r = fread(&length, sizeof(int), 1, mRecording);
if (feof(mRecording))
return;
if (enable)
{
int numElements = length/sizeof(Element);
dest.resize(numElements);
r = fread(&dest[0], length, 1, mRecording);
}
else
r = fseek(mRecording, length, SEEK_CUR);
(void)r;
}
virtual void KeyDown(int key)
{
if (key == '[')
{
Vec3 lower(FLT_MAX), upper(-FLT_MAX);
// particle bounds
for (int i=0; i < int(g_buffers->activeIndices.size()); ++i)
{
int index = g_buffers->activeIndices[i];
lower = Min(Vec3(g_buffers->positions[index]), lower);
upper = Max(Vec3(g_buffers->positions[index]), upper);
}
// center camera
g_camPos = (lower+upper)*0.5f;
g_camPos = GetBasis()*g_camPos;
}
}
bool VerifyArray(float* ptr, int n)
{
for (int i=0; i < n; ++i)
if (!isfinite(ptr[i]))
return false;
return true;
}
template <typename Element>
void ReadValue(Element& e, bool enable=true)
{
if (feof(mRecording))
return;
int r;
if (enable)
r = fread(&e, sizeof(e), 1, mRecording);
else
r = fseek(mRecording, sizeof(e), SEEK_CUR);
(void)r;
}
void ReadFrame()
{
if (!mRecording)
return;
if (feof(mRecording))
return;
// params
ReadValue(g_params, true);
// particle data
//ReadArray(g_buffers->positions, true);
if (true)
{
for (int i=0; i < int(g_buffers->positions.size()); ++i)
{
if (!isfinite(g_buffers->positions[i].x) ||
!isfinite(g_buffers->positions[i].y) ||
!isfinite(g_buffers->positions[i].z))
printf("particles failed at frame %d\n", g_frame);
}
}
ReadArray(g_buffers->restPositions, true);
ReadArray(g_buffers->velocities, true);
ReadArray(g_buffers->phases, true);
ReadArray(g_buffers->activeIndices, true);
// spring data
ReadArray(g_buffers->springIndices, true);
ReadArray(g_buffers->springLengths, true);
ReadArray(g_buffers->springStiffness, true);
// shape data
ReadArray(g_buffers->rigidIndices, true);
ReadArray(g_buffers->rigidLocalPositions, true);
ReadArray(g_buffers->rigidLocalNormals, true);
ReadArray(g_buffers->rigidCoefficients, true);
ReadArray(g_buffers->rigidPlasticThresholds, true);
ReadArray(g_buffers->rigidPlasticCreeps, true);
ReadArray(g_buffers->rigidOffsets, true);
ReadArray(g_buffers->rigidRotations, true);
ReadArray(g_buffers->rigidTranslations, true);
if (true)
{
if (!VerifyArray((float*)&g_buffers->rigidLocalPositions[0], g_buffers->rigidLocalPositions.size()*3))
printf("rigid local pos failed\n");
if (!VerifyArray((float*)&g_buffers->rigidTranslations[0], g_buffers->rigidTranslations.size()*3))
printf("rigid translations failed\n");
if (!VerifyArray((float*)&g_buffers->rigidRotations[0], g_buffers->rigidRotations.size()*3))
printf("rigid rotations failed\n");
}
// triangle data
ReadArray(g_buffers->triangles, true);
ReadArray(g_buffers->triangleNormals, true);
// convex shapes
ReadArray(g_buffers->shapeGeometry, true);
ReadArray(g_buffers->shapeAabbMin, true);
ReadArray(g_buffers->shapeAabbMax, true);
ReadArray(g_buffers->shapeStarts, true);
ReadArray(g_buffers->shapePositions, true);
ReadArray(g_buffers->shapeRotations, true);
ReadArray(g_buffers->shapePrevPositions, true);
ReadArray(g_buffers->shapePrevRotations, true);
ReadArray(g_buffers->shapeFlags, true);
if (true)
{
if (!VerifyArray((float*)&g_buffers->shapePositions[0], g_buffers->shapePositions.size()*4))
printf("shapes translations invalid\n");
if (!VerifyArray((float*)&g_buffers->shapeRotations[0], g_buffers->shapeRotations.size()*4))
printf("shapes rotations invalid\n");
}
int numMeshes = 0;
ReadValue(numMeshes);
// map serialized mesh ptrs to current meshes
std::map<NvFlexTriangleMeshId, NvFlexTriangleMeshId> originalToNewMeshMap;
for (int i=0; i < numMeshes; ++i)
{
Mesh m;
NvFlexTriangleMeshId originalPtr;
ReadValue(originalPtr);
ReadArray(m.m_positions);
ReadArray(m.m_indices);
if (!VerifyArray((float*)&m.m_positions[0], m.m_positions.size()*3))
printf("mesh vertices invalid\n");
printf("Creating mesh: %d faces %d vertices\n", m.GetNumFaces(), m.GetNumVertices());
Vec3 lower, upper;
m.GetBounds(lower, upper);
m.CalculateNormals();
NvFlexTriangleMeshId collisionMesh = NvFlexCreateTriangleMesh();
NvFlexUpdateTriangleMesh(collisionMesh, (float*)&m.m_positions[0], (int*)&m.m_indices[0], int(m.m_positions.size()), int(m.m_indices.size())/3, lower, upper, eFlexMemoryHost);
// create a render mesh
g_meshes[collisionMesh] = CreateGpuMesh(&m);
// create map from captured triangle mesh pointer to our recreated version
originalToNewMeshMap[originalPtr] = collisionMesh;
}
int numTriMeshInstances = 0;
// remap shape ptrs
for (int i=0; i < int(g_buffers->shapeFlags.size()); ++i)
{
if ((g_buffers->shapeFlags[i]&eNvFlexShapeFlagTypeMask) == eNvFlexShapeTriangleMesh)
{
numTriMeshInstances++;
NvFlexCollisionGeometry geo = g_buffers->shapeGeometry[g_buffers->shapeStarts[i]];
if (originalToNewMeshMap.find(geo.triMesh.mesh) == originalToNewMeshMap.end())
{
printf("Missing mesh for geometry entry\n");
assert(0);
}
else
{
g_buffers->shapeGeometry[g_buffers->shapeStarts[i]].mTriMesh.mMesh = originalToNewMeshMap[geo.triMesh.mesh];
}
}
}
printf("Num Tri Meshes: %d Num Tri Mesh Instances: %d\n", int(g_meshes.size()), numTriMeshInstances);
}
virtual void Draw(int pass)
{
}
virtual void DoGui()
{
}
virtual void Update()
{
}
const char* mFilename;
FILE* mRecording;
std::vector<int> mInitialActive;
};
*/
|