[980] | 1 | #include "GeoMeshSimplifier.h" |
---|
| 2 | #include "GeoMeshSimpSequence.h" |
---|
| 3 | #include "SimplificationMethod.h" |
---|
| 4 | #include <iostream> |
---|
| 5 | #include <fstream> |
---|
| 6 | |
---|
| 7 | using namespace Geometry; |
---|
| 8 | using namespace std; |
---|
| 9 | |
---|
| 10 | //////////////////////////////////////////////////////////////////////////// |
---|
| 11 | // // |
---|
| 12 | // MeshSimplifier class // |
---|
| 13 | // // |
---|
| 14 | //////////////////////////////////////////////////////////////////////////// |
---|
| 15 | |
---|
| 16 | //--------------------------------------------------------------------------- |
---|
| 17 | // MeshSimplifier constructor. |
---|
| 18 | //--------------------------------------------------------------------------- |
---|
| 19 | MeshSimplifier::MeshSimplifier( const Mesh *m, |
---|
| 20 | TIPOFUNC upb) |
---|
| 21 | { |
---|
| 22 | objmesh = m; |
---|
| 23 | mGeoMesh = NULL; |
---|
| 24 | msimpsequence = NULL; |
---|
| 25 | indexMeshLeaves = -1; |
---|
| 26 | |
---|
| 27 | // Sets the actual progress bar function. |
---|
| 28 | mUPB = upb; |
---|
| 29 | } |
---|
| 30 | |
---|
| 31 | //--------------------------------------------------------------------------- |
---|
| 32 | // MeshSimplifier destroyer. |
---|
| 33 | //--------------------------------------------------------------------------- |
---|
| 34 | MeshSimplifier::~MeshSimplifier() |
---|
| 35 | { |
---|
| 36 | delete msimpsequence; |
---|
| 37 | } |
---|
| 38 | |
---|
| 39 | //--------------------------------------------------------------------------- |
---|
| 40 | // Returns the simplified mesh. |
---|
| 41 | //--------------------------------------------------------------------------- |
---|
| 42 | Mesh * MeshSimplifier::GetMesh() |
---|
| 43 | { |
---|
| 44 | return mGeoMesh; |
---|
| 45 | } |
---|
| 46 | |
---|
| 47 | //--------------------------------------------------------------------------- |
---|
| 48 | // Set submesh leaves |
---|
| 49 | //--------------------------------------------------------------------------- |
---|
| 50 | void MeshSimplifier::setMeshLeaves(Index index) |
---|
| 51 | { |
---|
| 52 | indexMeshLeaves = index; |
---|
| 53 | } |
---|
| 54 | |
---|
| 55 | //--------------------------------------------------------------------------- |
---|
| 56 | // Returns the simplification sequence for general meshes. |
---|
| 57 | //--------------------------------------------------------------------------- |
---|
| 58 | MeshSimplificationSequence *MeshSimplifier::GetSimplificationSequence() |
---|
| 59 | { |
---|
| 60 | return msimpsequence; |
---|
| 61 | } |
---|
| 62 | |
---|
| 63 | //////////////////////////////////////////////////////////////////////////// |
---|
| 64 | // // |
---|
| 65 | // GeometryBasedSimplifier class // |
---|
| 66 | // // |
---|
| 67 | //////////////////////////////////////////////////////////////////////////// |
---|
| 68 | |
---|
| 69 | //--------------------------------------------------------------------------- |
---|
| 70 | //--------------------------------------------------------------------------- |
---|
| 71 | GeometryBasedSimplifier::GeometryBasedSimplifier( const Mesh *m, |
---|
| 72 | TIPOFUNC upb) |
---|
| 73 | :MeshSimplifier(m,upb) |
---|
| 74 | { |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | //--------------------------------------------------------------------------- |
---|
| 78 | //--------------------------------------------------------------------------- |
---|
| 79 | GeometryBasedSimplifier::~GeometryBasedSimplifier() |
---|
| 80 | { |
---|
| 81 | } |
---|
| 82 | |
---|
| 83 | //--------------------------------------------------------------------------- |
---|
| 84 | // Starts the simplification process. Receives as a parameter the LOD factor in a range of [0,1]. Implements the Simplifier::Simplify method to perform an image based simplification. |
---|
| 85 | //--------------------------------------------------------------------------- |
---|
| 86 | void GeometryBasedSimplifier::Simplify(Real paramlod) |
---|
| 87 | { |
---|
| 88 | SimplificationMethod *m_qslim = new SimplificationMethod(objmesh); |
---|
| 89 | |
---|
| 90 | m_qslim->setMeshLeaves(indexMeshLeaves); |
---|
| 91 | |
---|
| 92 | msimpsequence = m_qslim->Decimate(paramlod,0,mUPB); |
---|
| 93 | |
---|
| 94 | mGeoMesh = m_qslim->GetMesh(); |
---|
| 95 | |
---|
| 96 | delete m_qslim; |
---|
| 97 | } |
---|
| 98 | |
---|
| 99 | //--------------------------------------------------------------------------- |
---|
| 100 | // Starts the simplification process. Receives as a parameter the number of vertices of the resulting mesh. Implements the Simplifier::Simplify method to perform an image based simplification. |
---|
| 101 | //--------------------------------------------------------------------------- |
---|
| 102 | void GeometryBasedSimplifier::Simplify(uint32 numvertices) |
---|
| 103 | { |
---|
| 104 | SimplificationMethod *m_qslim = new SimplificationMethod(objmesh); |
---|
| 105 | |
---|
| 106 | m_qslim->setMeshLeaves(indexMeshLeaves); |
---|
| 107 | |
---|
| 108 | msimpsequence = m_qslim->Decimate((float)numvertices,1,mUPB); |
---|
| 109 | |
---|
| 110 | mGeoMesh = m_qslim->GetMesh(); |
---|
| 111 | |
---|
| 112 | delete m_qslim; |
---|
| 113 | } |
---|
| 114 | |
---|
| 115 | //////////////////////////////////////////////////////////////////////////// |
---|
| 116 | // // |
---|
| 117 | // ViewPointDrivenSimplifier class // |
---|
| 118 | // // |
---|
| 119 | //////////////////////////////////////////////////////////////////////////// |
---|
| 120 | |
---|
| 121 | //--------------------------------------------------------------------------- |
---|
| 122 | /// Class constructor. Will call Simplifier class constructor. |
---|
| 123 | //--------------------------------------------------------------------------- |
---|
| 124 | ViewPointDrivenSimplifier::ViewPointDrivenSimplifier( const Mesh *m, |
---|
| 125 | TIPOFUNC upb) |
---|
| 126 | :MeshSimplifier(m,upb) |
---|
| 127 | { |
---|
| 128 | //char s[MAX_CHAR]; |
---|
| 129 | |
---|
| 130 | // Set progress update function |
---|
| 131 | VMI::mUPB = upb; |
---|
| 132 | |
---|
| 133 | VMI::width = 256; |
---|
| 134 | VMI::height = 256; |
---|
| 135 | |
---|
| 136 | VMI::bEnableOffScreen = GL_TRUE; |
---|
| 137 | VMI::bBeQuiet = GL_FALSE; |
---|
| 138 | VMI::bSaveLog = GL_FALSE; |
---|
| 139 | VMI::bLoadCamerasFromFile = GL_FALSE; |
---|
| 140 | |
---|
[1007] | 141 | VMI::cameraType = 2; |
---|
[980] | 142 | VMI::radius = 1.3; |
---|
| 143 | VMI::fov = 60.0; |
---|
| 144 | |
---|
| 145 | printf("w: %d h: %d\n", VMI::width, VMI::height); |
---|
| 146 | |
---|
| 147 | printf( "t: %d c: %d o: %d r: %f\n", |
---|
| 148 | VMI::numDemandedTriangles, |
---|
| 149 | VMI::cameraType, |
---|
| 150 | VMI::bEnableOffScreen, |
---|
| 151 | VMI::radius); |
---|
| 152 | |
---|
| 153 | |
---|
| 154 | mGeoMesh = new Mesh(); |
---|
| 155 | |
---|
| 156 | *mGeoMesh = *m; |
---|
| 157 | |
---|
| 158 | // Transform NoSV Mesh to a SV Mesh. |
---|
| 159 | mGeoMesh = mGeoMesh->toSharedVertex(); |
---|
| 160 | |
---|
| 161 | // Loads the vmi mesh structure for a geometry mesh given. |
---|
| 162 | VMI::mesh = initMeshStructure(mGeoMesh); |
---|
| 163 | |
---|
| 164 | //VMI::printMesh(mesh); |
---|
| 165 | //getchar(); |
---|
| 166 | |
---|
| 167 | // Get a filename without extension |
---|
| 168 | //strncpy(VMI::filename, argv[argc - 1], strlen(argv[argc - 1]) - 4); |
---|
| 169 | |
---|
| 170 | //glutInit(&argc, argv); |
---|
[1007] | 171 | // RGB and Alpha. |
---|
| 172 | glutInitDisplayMode(GLUT_DEPTH | GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA); |
---|
[980] | 173 | glutInitWindowSize(VMI::width, VMI::height); |
---|
| 174 | glutInitWindowPosition(100, 100); |
---|
| 175 | |
---|
| 176 | //#ifdef KL // Kullback-Leibler |
---|
| 177 | // sprintf(s, "VKL - [%s]", argv[argc-1]); |
---|
| 178 | //#endif |
---|
| 179 | //#ifdef MI // Mutual Information |
---|
| 180 | // sprintf(s, "VMI - [%s]", argv[argc-1]); |
---|
| 181 | //#endif |
---|
| 182 | //#ifdef HE // Hellinger |
---|
| 183 | // sprintf(s, "VHE - [%s]", argv[argc-1]); |
---|
| 184 | //#endif |
---|
| 185 | //#ifdef CS // Chi-Square |
---|
| 186 | // sprintf(s, "VCS - [%s]", argv[argc-1]); |
---|
| 187 | //#endif |
---|
| 188 | |
---|
| 189 | VMI::vmiWin = glutCreateWindow("VMI"/*s*/); |
---|
| 190 | |
---|
| 191 | glewInit(); |
---|
| 192 | |
---|
| 193 | VMI::init(); |
---|
| 194 | |
---|
| 195 | if (VMI::bLoadCamerasFromFile == GL_FALSE) |
---|
| 196 | { |
---|
| 197 | switch (VMI::cameraType) |
---|
| 198 | { |
---|
| 199 | case 0: |
---|
| 200 | VMI::cameras = VMI::setCameras(VMI::radius, OCTAHEDRON, &VMI::numCameras); |
---|
| 201 | printf("Number of cameras: %d\n", OCTAHEDRON); |
---|
| 202 | break; |
---|
| 203 | case 1: |
---|
| 204 | VMI:: cameras = VMI::setCameras(VMI::radius, ICOSAHEDRON, &VMI::numCameras); |
---|
| 205 | printf("Number of cameras: %d\n", ICOSAHEDRON); |
---|
| 206 | break; |
---|
| 207 | case 2: |
---|
| 208 | VMI::cameras = VMI::setCameras(VMI::radius, DODECAHEDRON, &VMI::numCameras); |
---|
| 209 | printf("Number of cameras: %d\n", DODECAHEDRON); |
---|
| 210 | break; |
---|
| 211 | default: |
---|
| 212 | break; |
---|
| 213 | } |
---|
| 214 | } |
---|
| 215 | else |
---|
| 216 | { |
---|
| 217 | // Loads a cameras file |
---|
| 218 | //sprintf(s,"%s.cam", VMI::filename); |
---|
| 219 | |
---|
| 220 | //VMI::cameras = VMI::loadCameras(VMI::radius, s, &VMI::numCameras); |
---|
| 221 | //getchar(); |
---|
| 222 | } |
---|
| 223 | |
---|
| 224 | VMI::histogram = VMI::initHistogram( VMI::mesh->currentNumTriangles, |
---|
| 225 | VMI::numCameras); |
---|
| 226 | |
---|
| 227 | VMI::initialIs = VMI::initIs(VMI::numCameras); |
---|
| 228 | |
---|
| 229 | } |
---|
| 230 | |
---|
| 231 | //--------------------------------------------------------------------------- |
---|
| 232 | /// Class destructor. |
---|
| 233 | //--------------------------------------------------------------------------- |
---|
| 234 | ViewPointDrivenSimplifier::~ViewPointDrivenSimplifier(void) |
---|
| 235 | { |
---|
| 236 | // Free memory |
---|
| 237 | VMI::freeMemory(); |
---|
| 238 | } |
---|
| 239 | |
---|
| 240 | /// Copy constructor |
---|
| 241 | //ViewPointDrivenSimplifier(const ViewPointDrivenSimplifier&); |
---|
| 242 | |
---|
| 243 | /// Assignment operator |
---|
| 244 | //ViewPointDrivenSimplifier& operator =(const ViewPointDrivenSimplifier&); |
---|
| 245 | |
---|
| 246 | /// Starts the simplification process. Receives as a parameter the LOD factor in a range of [0,1]. Implements the Simplifier::Simplify method to perform an image based simplification. |
---|
| 247 | void ViewPointDrivenSimplifier::Simplify(Real percent) |
---|
| 248 | { |
---|
| 249 | // TODO: parametros libreria globales |
---|
| 250 | |
---|
| 251 | |
---|
| 252 | VMI::numDemandedTriangles = (int)(VMI::mesh->numTriangles * percent); |
---|
| 253 | |
---|
| 254 | if ((VMI::numDemandedTriangles == 0) |
---|
| 255 | || |
---|
| 256 | (VMI::numDemandedTriangles >= VMI::mesh->currentNumTriangles)) |
---|
| 257 | { |
---|
| 258 | printf("Illegal number of triangles.\n"); |
---|
| 259 | } |
---|
| 260 | |
---|
| 261 | VMI::display(); |
---|
| 262 | |
---|
| 263 | // Load a geometry mesh for vmi mesh. |
---|
| 264 | loadMesh(); |
---|
[1007] | 265 | |
---|
| 266 | GetMeshSimpSequence(); |
---|
[980] | 267 | } |
---|
| 268 | |
---|
| 269 | //--------------------------------------------------------------------------- |
---|
| 270 | /// Starts the simplification process. Receives as a parameter the number of vertices of the resulting mesh. Implements the Simplifier::Simplify method to perform an image based simplification. |
---|
| 271 | //--------------------------------------------------------------------------- |
---|
| 272 | void ViewPointDrivenSimplifier::Simplify(uint32 numVertices) |
---|
| 273 | { |
---|
| 274 | float percent; |
---|
| 275 | |
---|
| 276 | percent = (numVertices * 100.0) / VMI::mesh->numVertices; |
---|
| 277 | |
---|
| 278 | VMI::numDemandedTriangles = (int)(VMI::mesh->numTriangles * (percent / 100)); |
---|
| 279 | |
---|
| 280 | if ((VMI::numDemandedTriangles == 0) |
---|
| 281 | || |
---|
| 282 | (VMI::numDemandedTriangles >= VMI::mesh->currentNumTriangles)) |
---|
| 283 | { |
---|
| 284 | printf("Illegal number of triangles.\n"); |
---|
| 285 | } |
---|
| 286 | |
---|
| 287 | VMI::display(); |
---|
| 288 | |
---|
| 289 | // Load a geometry mesh for vmi mesh. |
---|
| 290 | loadMesh(); |
---|
| 291 | |
---|
[1007] | 292 | GetMeshSimpSequence(); |
---|
[980] | 293 | } |
---|
| 294 | |
---|
| 295 | // Returns the simplified mesh. |
---|
| 296 | //Mesh * ViewPointDrivenSimplifier::GetMesh() |
---|
| 297 | //{ |
---|
| 298 | // return mGeoMesh; |
---|
| 299 | //} |
---|
| 300 | |
---|
| 301 | //--------------------------------------------------------------------------- |
---|
[1007] | 302 | // Gets the VMI mesh simplification sequence. |
---|
| 303 | //--------------------------------------------------------------------------- |
---|
| 304 | void ViewPointDrivenSimplifier::GetMeshSimpSequence() |
---|
| 305 | { |
---|
| 306 | unsigned int j = 0; |
---|
| 307 | |
---|
| 308 | MeshSimplificationSequence::Step current_step; |
---|
| 309 | |
---|
| 310 | msimpsequence = new MeshSimplificationSequence(); |
---|
| 311 | |
---|
| 312 | // For each simplification step. |
---|
| 313 | for (unsigned int i = 0; i < VMI::mVMISteps.size(); i++) |
---|
| 314 | { |
---|
| 315 | current_step.mV0 = VMI::mVMISteps[i].mV0; |
---|
| 316 | current_step.mV1 = VMI::mVMISteps[i].mV1; |
---|
| 317 | current_step.mT0 = VMI::mVMISteps[i].mT0; |
---|
| 318 | current_step.mT1 = VMI::mVMISteps[i].mT1; |
---|
| 319 | |
---|
| 320 | current_step.x = VMI::mVMISteps[i].x; |
---|
| 321 | current_step.y = VMI::mVMISteps[i].y; |
---|
| 322 | current_step.z = VMI::mVMISteps[i].z; |
---|
| 323 | |
---|
| 324 | current_step.obligatorio = VMI::mVMISteps[i].obligatory; |
---|
| 325 | |
---|
| 326 | // For each face modificated. |
---|
| 327 | while (j < VMI::mVMISteps[i].mModfaces.size()) |
---|
| 328 | { |
---|
| 329 | current_step.mModfaces.push_back(VMI::mVMISteps[i].mModfaces[j]); |
---|
| 330 | |
---|
| 331 | j++; |
---|
| 332 | } |
---|
| 333 | |
---|
| 334 | msimpsequence->mSteps.push_back(current_step); |
---|
| 335 | } |
---|
| 336 | } |
---|
| 337 | |
---|
| 338 | //--------------------------------------------------------------------------- |
---|
[980] | 339 | // Init vmi mesh structure for a geometry mesh given. |
---|
| 340 | //--------------------------------------------------------------------------- |
---|
| 341 | VMI::Mesh * ViewPointDrivenSimplifier::initMeshStructure(Mesh *geoMesh) |
---|
| 342 | { |
---|
| 343 | GLuint i, j, v1, v2, v3, n, e, t; |
---|
| 344 | VMI::Mesh *vmi_mesh; |
---|
| 345 | SubMesh *geosubmesh; |
---|
| 346 | VertexBuffer *vertex_buffer; |
---|
| 347 | int mesh_index_count; |
---|
| 348 | int index; |
---|
| 349 | |
---|
| 350 | // Reallocate memory for vmi mesh object. |
---|
| 351 | vmi_mesh = (VMI::Mesh *)malloc(sizeof(VMI::Mesh)); |
---|
| 352 | |
---|
| 353 | if (vmi_mesh == NULL) |
---|
| 354 | { |
---|
| 355 | fprintf(stderr, "Error allocating memory\n"); |
---|
| 356 | exit(1); |
---|
| 357 | } |
---|
| 358 | |
---|
| 359 | // Shared vertex buffer. |
---|
| 360 | vertex_buffer = geoMesh->mVertexBuffer; |
---|
| 361 | |
---|
| 362 | // Reallocate memory for vertices of mesh. |
---|
| 363 | vmi_mesh->vertices = (VMI::Vertex *)malloc(sizeof(VMI::Vertex) |
---|
| 364 | * |
---|
| 365 | vertex_buffer->mVertexCount); |
---|
| 366 | |
---|
| 367 | if (vmi_mesh->vertices == NULL) |
---|
| 368 | { |
---|
| 369 | fprintf(stderr, "Error allocating memory\n"); |
---|
| 370 | exit(1); |
---|
| 371 | } |
---|
| 372 | |
---|
| 373 | // Initialize mesh index count. |
---|
| 374 | mesh_index_count = 0; |
---|
| 375 | |
---|
[985] | 376 | for (unsigned int submesh = 0; submesh < mGeoMesh->mSubMeshCount; submesh++) |
---|
[980] | 377 | { |
---|
[985] | 378 | mesh_index_count += int(mGeoMesh->mSubMesh[submesh].mIndexCount); |
---|
[980] | 379 | } |
---|
| 380 | |
---|
| 381 | // Reallocate memory for indices. |
---|
| 382 | vmi_mesh->triangles = (VMI::Triangle *)malloc(sizeof(VMI::Triangle) |
---|
| 383 | * |
---|
| 384 | (mesh_index_count / 3)); |
---|
| 385 | |
---|
| 386 | if (vmi_mesh->triangles == NULL) |
---|
| 387 | { |
---|
| 388 | fprintf(stderr, "Error allocating memory\n"); |
---|
| 389 | exit(1); |
---|
| 390 | } |
---|
| 391 | |
---|
| 392 | printf("Adding vertices..."); |
---|
| 393 | |
---|
| 394 | // Fill up vertices. |
---|
| 395 | for (i = 0; i < vertex_buffer->mVertexCount; i++) |
---|
| 396 | { |
---|
| 397 | // Vertices start at 0. |
---|
| 398 | vmi_mesh->vertices[i].x = vertex_buffer->mPosition[i].x; |
---|
| 399 | vmi_mesh->vertices[i].y = vertex_buffer->mPosition[i].y; |
---|
| 400 | vmi_mesh->vertices[i].z = vertex_buffer->mPosition[i].z; |
---|
| 401 | |
---|
| 402 | vmi_mesh->vertices[i].numTriangles = 0; |
---|
| 403 | vmi_mesh->vertices[i].triangles = NULL; |
---|
| 404 | vmi_mesh->vertices[i].enable = GL_TRUE; |
---|
| 405 | } |
---|
| 406 | |
---|
| 407 | printf("Ok\n"); |
---|
[985] | 408 | vmi_mesh->numVertices = int(vertex_buffer->mVertexCount); |
---|
| 409 | vmi_mesh->currentNumVertices = int(vertex_buffer->mVertexCount); |
---|
[980] | 410 | |
---|
| 411 | // Fill up triangles. |
---|
| 412 | printf("Adding triangles..."); |
---|
| 413 | |
---|
| 414 | // Initialize index of triangle. |
---|
| 415 | index = 0; |
---|
| 416 | |
---|
| 417 | // For each submesh. |
---|
[985] | 418 | for (unsigned int submesh = 0; submesh < mGeoMesh->mSubMeshCount; submesh++) |
---|
[980] | 419 | { |
---|
| 420 | // Gets actual submesh. |
---|
| 421 | geosubmesh = &mGeoMesh->mSubMesh[submesh]; |
---|
| 422 | |
---|
| 423 | for (i = 0; i < (geosubmesh->mIndexCount / 3); i++) |
---|
| 424 | { |
---|
| 425 | vmi_mesh->triangles[index].id = index; |
---|
| 426 | vmi_mesh->triangles[index].submesh = submesh; |
---|
| 427 | vmi_mesh->triangles[index].indices[0] = geosubmesh->mIndex[(3 * i)]; |
---|
| 428 | vmi_mesh->triangles[index].indices[1] = geosubmesh->mIndex[(3 * i) + 1]; |
---|
| 429 | vmi_mesh->triangles[index].indices[2] = geosubmesh->mIndex[(3 * i) + 2]; |
---|
| 430 | |
---|
| 431 | vmi_mesh->triangles[index].area = computeTriangleArea(vmi_mesh->vertices, |
---|
| 432 | &vmi_mesh->triangles[index]); |
---|
| 433 | //printf("\n%d a: %f",index , vmi_mesh->triangles[index].area); |
---|
| 434 | computeTriangleNormal(vmi_mesh->vertices, &vmi_mesh->triangles[index]); |
---|
| 435 | |
---|
| 436 | vmi_mesh->triangles[index].saliency = 0.0; |
---|
| 437 | |
---|
| 438 | vmi_mesh->triangles[index].enable = GL_TRUE; |
---|
| 439 | |
---|
| 440 | for (j = 0; j < 3; j++) |
---|
| 441 | { |
---|
| 442 | // Adding triangle index adjacent to 3 vertices |
---|
| 443 | v1 = vmi_mesh->triangles[index].indices[j]; |
---|
| 444 | |
---|
| 445 | // Reallocate memory for the new adjacent triangle |
---|
| 446 | vmi_mesh->vertices[v1].triangles = (GLuint *)realloc(vmi_mesh->vertices[v1].triangles, (vmi_mesh->vertices[v1].numTriangles + 1) * sizeof(GLuint)); |
---|
| 447 | VMI::addItem((int *)vmi_mesh->vertices[v1].triangles, (int *)&vmi_mesh->vertices[v1].numTriangles, index); |
---|
| 448 | } |
---|
| 449 | |
---|
| 450 | // Increments triangle count. |
---|
| 451 | index++; |
---|
| 452 | } |
---|
| 453 | } |
---|
| 454 | |
---|
| 455 | //printf("\n"); |
---|
| 456 | printf("Ok\n"); |
---|
| 457 | |
---|
| 458 | vmi_mesh->numTriangles = mesh_index_count / 3; |
---|
| 459 | vmi_mesh->currentNumTriangles = mesh_index_count / 3; |
---|
| 460 | |
---|
| 461 | printf("Num Triangles: %d\n",vmi_mesh->numTriangles); |
---|
| 462 | |
---|
| 463 | // E = 3 T / 2 |
---|
| 464 | vmi_mesh->edges = (VMI::Edge *)malloc(sizeof(VMI::Edge) |
---|
| 465 | * |
---|
| 466 | vmi_mesh->numTriangles * 3); |
---|
| 467 | |
---|
| 468 | if (vmi_mesh->edges == NULL) |
---|
| 469 | { |
---|
| 470 | fprintf(stderr, "Error allocating memory\n"); |
---|
| 471 | exit(1); |
---|
| 472 | } |
---|
| 473 | |
---|
| 474 | // Init edges |
---|
| 475 | for (i=0; i<vmi_mesh->numTriangles * 3; i++) |
---|
| 476 | { |
---|
| 477 | vmi_mesh->edges[i].triangles = NULL; |
---|
| 478 | vmi_mesh->edges[i].numTriangles = 0; |
---|
| 479 | } |
---|
| 480 | |
---|
| 481 | printf("Adding edges..."); |
---|
| 482 | n = 0; |
---|
| 483 | |
---|
| 484 | for (i=0; i<vmi_mesh->numTriangles; i++) |
---|
| 485 | { |
---|
| 486 | t = 0; |
---|
| 487 | v1 = vmi_mesh->triangles[i].indices[0]; |
---|
| 488 | v2 = vmi_mesh->triangles[i].indices[1]; |
---|
| 489 | v3 = vmi_mesh->triangles[i].indices[2]; |
---|
| 490 | |
---|
| 491 | if ((e = findEdge(vmi_mesh->edges, n, v1, v2)) == -1) |
---|
| 492 | { |
---|
| 493 | vmi_mesh->edges[n].u = v1; |
---|
| 494 | vmi_mesh->edges[n].v = v2; |
---|
| 495 | vmi_mesh->edges[n].enable = GL_TRUE; |
---|
| 496 | |
---|
| 497 | // Reallocate memory for the new adjacent triangle |
---|
| 498 | vmi_mesh->edges[n].triangles = (GLuint *)realloc(vmi_mesh->edges[n].triangles, (vmi_mesh->edges[n].numTriangles + 1) * sizeof(GLuint)); |
---|
| 499 | // Adding triangle i adjacent to edge n |
---|
| 500 | VMI::addItem((int *)vmi_mesh->edges[n].triangles, (int *)&vmi_mesh->edges[n].numTriangles, i); |
---|
| 501 | //printf("n:%d i:%d\n", n, i); |
---|
| 502 | |
---|
| 503 | // Adding edge n adjacent to triangle i |
---|
| 504 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, n); |
---|
| 505 | n++; |
---|
| 506 | } |
---|
| 507 | else |
---|
| 508 | { |
---|
| 509 | // Reallocate memory for the new adjacent triangle. |
---|
| 510 | vmi_mesh->edges[e].triangles = (GLuint *)realloc(vmi_mesh->edges[e].triangles, (vmi_mesh->edges[e].numTriangles + 1) * sizeof(GLuint)); |
---|
| 511 | // Adding triangle i adjacent to edge e |
---|
| 512 | VMI::addItem((int *)vmi_mesh->edges[e].triangles, (int *)&vmi_mesh->edges[e].numTriangles, i); |
---|
| 513 | //printf("n:%d i:%d\n", e, i); |
---|
| 514 | |
---|
| 515 | // Adding edge e adjacent to triangle i |
---|
| 516 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, e); |
---|
| 517 | } |
---|
| 518 | if ((e = findEdge(vmi_mesh->edges, n, v2, v3)) == -1) |
---|
| 519 | { |
---|
| 520 | vmi_mesh->edges[n].u = v2; |
---|
| 521 | vmi_mesh->edges[n].v = v3; |
---|
| 522 | vmi_mesh->edges[n].enable = GL_TRUE; |
---|
| 523 | |
---|
| 524 | // Reallocate memory for the new adjacent triangle |
---|
| 525 | vmi_mesh->edges[n].triangles = (GLuint *)realloc(vmi_mesh->edges[n].triangles, (vmi_mesh->edges[n].numTriangles + 1) * sizeof(GLuint)); |
---|
| 526 | // Adding triangle i adjacent to edge n |
---|
| 527 | VMI::addItem((int *)vmi_mesh->edges[n].triangles, (int *)&vmi_mesh->edges[n].numTriangles, i); |
---|
| 528 | //printf("n:%d i:%d\n", n, i); |
---|
| 529 | |
---|
| 530 | // Adding edge n adjacent to triangle i |
---|
| 531 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, n); |
---|
| 532 | n++; |
---|
| 533 | } |
---|
| 534 | else |
---|
| 535 | { |
---|
| 536 | // Reallocate memory for the new adjacent triangle |
---|
| 537 | vmi_mesh->edges[e].triangles = (GLuint *)realloc(vmi_mesh->edges[e].triangles, (vmi_mesh->edges[e].numTriangles + 1) * sizeof(GLuint)); |
---|
| 538 | // Adding triangle i adjacent to edge e |
---|
| 539 | VMI::addItem((int *)vmi_mesh->edges[e].triangles, (int *)&vmi_mesh->edges[e].numTriangles, i); |
---|
| 540 | //printf("n:%d i:%d\n", e, i); |
---|
| 541 | |
---|
| 542 | // Adding edge e adjacent to triangle i |
---|
| 543 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, e); |
---|
| 544 | } |
---|
| 545 | |
---|
| 546 | if ((e = findEdge(vmi_mesh->edges, n, v3, v1)) == -1) |
---|
| 547 | { |
---|
| 548 | vmi_mesh->edges[n].u = v3; |
---|
| 549 | vmi_mesh->edges[n].v = v1; |
---|
| 550 | vmi_mesh->edges[n].enable = GL_TRUE; |
---|
| 551 | |
---|
| 552 | // Reallocate memory for the new adjacent triangle |
---|
| 553 | vmi_mesh->edges[n].triangles = (GLuint *)realloc(vmi_mesh->edges[n].triangles, (vmi_mesh->edges[n].numTriangles + 1) * sizeof(GLuint)); |
---|
| 554 | // Adding triangle i adjacent to edge n |
---|
| 555 | VMI::addItem((int *)vmi_mesh->edges[n].triangles, (int *)&vmi_mesh->edges[n].numTriangles, i); |
---|
| 556 | //printf("n:%d i:%d\n", n, i); |
---|
| 557 | |
---|
| 558 | // Adding edge n adjacent to triangle i |
---|
| 559 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, n); |
---|
| 560 | n++; |
---|
| 561 | } |
---|
| 562 | else |
---|
| 563 | { |
---|
| 564 | // Reallocate memory for the new adjacent triangle |
---|
| 565 | vmi_mesh->edges[e].triangles = (GLuint *)realloc(vmi_mesh->edges[e].triangles, (vmi_mesh->edges[e].numTriangles + 1) * sizeof(GLuint)); |
---|
| 566 | // Adding triangle i adjacent to edge e |
---|
| 567 | VMI::addItem((int *)vmi_mesh->edges[e].triangles, (int *)&vmi_mesh->edges[e].numTriangles, i); |
---|
| 568 | //printf("n:%d i:%d\n", e, i); |
---|
| 569 | |
---|
| 570 | // Adding edge e adjacent to triangle i |
---|
| 571 | VMI::addItem((int *)vmi_mesh->triangles[i].edges, (int *)&t, e); |
---|
| 572 | } |
---|
| 573 | } |
---|
| 574 | |
---|
| 575 | printf("Ok\n"); |
---|
| 576 | vmi_mesh->numEdges = n; |
---|
| 577 | |
---|
| 578 | return vmi_mesh; |
---|
| 579 | } |
---|
| 580 | |
---|
| 581 | //--------------------------------------------------------------------------- |
---|
| 582 | // Gets the geometry mesh of a the vmi mesh given. |
---|
| 583 | //--------------------------------------------------------------------------- |
---|
| 584 | void ViewPointDrivenSimplifier::loadMesh() |
---|
| 585 | { |
---|
| 586 | int num_indices; |
---|
| 587 | SubMesh *geosubmesh; |
---|
| 588 | VertexBuffer *vertex_buffer; |
---|
| 589 | |
---|
| 590 | // Gets old vertex buffer. |
---|
| 591 | vertex_buffer = mGeoMesh->mVertexBuffer; |
---|
| 592 | |
---|
| 593 | // Initialize auxiliar vertex buffer. |
---|
| 594 | mVB = new VertexBuffer(); |
---|
| 595 | |
---|
| 596 | mVB->mPosition = new Vector3[VMI::mesh->currentNumVertices]; |
---|
| 597 | mVB->mNormal = new Vector3[VMI::mesh->currentNumVertices]; |
---|
| 598 | mVB->mTexCoords = new Vector2[VMI::mesh->currentNumVertices]; |
---|
| 599 | |
---|
| 600 | mVB->mVertexInfo = vertex_buffer->mVertexInfo; |
---|
| 601 | |
---|
| 602 | // For each submesh. |
---|
[985] | 603 | for (unsigned int submesh = 0; submesh < mGeoMesh->mSubMeshCount; submesh++) |
---|
[980] | 604 | { |
---|
| 605 | geosubmesh = &mGeoMesh->mSubMesh[submesh]; |
---|
| 606 | |
---|
| 607 | delete []geosubmesh->mIndex; |
---|
| 608 | |
---|
| 609 | // Initialize submesh index count; |
---|
| 610 | num_indices = 0; |
---|
| 611 | |
---|
| 612 | // For each triangle. |
---|
[985] | 613 | for (unsigned int i = 0; i < VMI::mesh->numTriangles; i++) |
---|
[980] | 614 | { |
---|
| 615 | // If is enable and of the current submesh. |
---|
| 616 | if ((VMI::mesh->triangles[i].enable) |
---|
| 617 | && |
---|
| 618 | (VMI::mesh->triangles[i].submesh == submesh)) |
---|
| 619 | { |
---|
| 620 | // Increments submesh index count. |
---|
| 621 | num_indices += 3; |
---|
| 622 | } |
---|
| 623 | } |
---|
| 624 | |
---|
| 625 | geosubmesh->mIndexCount = num_indices; |
---|
| 626 | |
---|
| 627 | geosubmesh->mIndex = new Index[geosubmesh->mIndexCount]; |
---|
| 628 | |
---|
| 629 | // Initialize number of indices. |
---|
| 630 | num_indices = 0; |
---|
| 631 | |
---|
| 632 | // Fill up indices. |
---|
[985] | 633 | for (unsigned int i = 0; i < VMI::mesh->numTriangles; i++) |
---|
[980] | 634 | { |
---|
| 635 | if ((VMI::mesh->triangles[i].enable) |
---|
| 636 | && |
---|
| 637 | (VMI::mesh->triangles[i].submesh == submesh)) |
---|
| 638 | { |
---|
| 639 | geosubmesh->mIndex[num_indices++] = VMI::mesh->triangles[i].indices[0]; |
---|
| 640 | geosubmesh->mIndex[num_indices++] = VMI::mesh->triangles[i].indices[1]; |
---|
| 641 | geosubmesh->mIndex[num_indices++] = VMI::mesh->triangles[i].indices[2]; |
---|
| 642 | } |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | // For each index. |
---|
[985] | 646 | for (unsigned int i = 0; i < geosubmesh->mIndexCount; i++) |
---|
[980] | 647 | { |
---|
| 648 | findVertex(submesh,i); |
---|
| 649 | } |
---|
| 650 | |
---|
| 651 | geosubmesh->mVertexBuffer = mVB; |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | delete vertex_buffer; |
---|
| 655 | |
---|
| 656 | mGeoMesh->mVertexBuffer = mVB; |
---|
| 657 | |
---|
| 658 | } |
---|
| 659 | |
---|
| 660 | //--------------------------------------------------------------------------- |
---|
| 661 | // Find vertex in auxiliar vertex buffer. |
---|
| 662 | //--------------------------------------------------------------------------- |
---|
| 663 | void ViewPointDrivenSimplifier::findVertex(size_t submesh, size_t elem) |
---|
| 664 | { |
---|
| 665 | bool found; |
---|
| 666 | int index; |
---|
[985] | 667 | unsigned int i; |
---|
[980] | 668 | int new_elem; |
---|
| 669 | VertexBuffer *vertex_buffer; |
---|
| 670 | |
---|
| 671 | found = false; |
---|
| 672 | |
---|
| 673 | // Shared vertex buffer. |
---|
| 674 | vertex_buffer = mGeoMesh->mVertexBuffer; |
---|
| 675 | |
---|
| 676 | index = mGeoMesh->mSubMesh[submesh].mIndex[elem]; |
---|
| 677 | |
---|
| 678 | i = 0; |
---|
| 679 | |
---|
| 680 | while (!found && (i < mVB->mVertexCount)) |
---|
| 681 | { |
---|
| 682 | if ((VMI::mesh->vertices[index].x == mVB->mPosition[i].x) |
---|
| 683 | && |
---|
| 684 | (VMI::mesh->vertices[index].y == mVB->mPosition[i].y) |
---|
| 685 | && |
---|
| 686 | (VMI::mesh->vertices[index].z == mVB->mPosition[i].z)) |
---|
| 687 | { |
---|
| 688 | found = true; |
---|
| 689 | |
---|
| 690 | // Update index. |
---|
| 691 | mGeoMesh->mSubMesh[submesh].mIndex[elem] = i; |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | // Increments index. |
---|
| 695 | i++; |
---|
| 696 | } |
---|
| 697 | |
---|
| 698 | if (!found) |
---|
| 699 | { |
---|
| 700 | // Last element. |
---|
[985] | 701 | new_elem = int(mVB->mVertexCount); |
---|
[980] | 702 | |
---|
| 703 | // Add to last. |
---|
| 704 | mVB->mPosition[new_elem].x = VMI::mesh->vertices[index].x; |
---|
| 705 | mVB->mPosition[new_elem].y = VMI::mesh->vertices[index].y; |
---|
| 706 | mVB->mPosition[new_elem].z = VMI::mesh->vertices[index].z; |
---|
| 707 | |
---|
| 708 | mVB->mNormal[new_elem].x = vertex_buffer->mNormal[index].x; |
---|
| 709 | mVB->mNormal[new_elem].y = vertex_buffer->mNormal[index].y; |
---|
| 710 | mVB->mNormal[new_elem].z = vertex_buffer->mNormal[index].z; |
---|
| 711 | |
---|
| 712 | mVB->mTexCoords[new_elem].x = vertex_buffer->mTexCoords[index].x; |
---|
| 713 | mVB->mTexCoords[new_elem].y = vertex_buffer->mTexCoords[index].y; |
---|
| 714 | |
---|
| 715 | // Update index. |
---|
| 716 | mGeoMesh->mSubMesh[submesh].mIndex[elem] = new_elem; |
---|
| 717 | |
---|
| 718 | // Increments vertex count. |
---|
| 719 | mVB->mVertexCount++; |
---|
| 720 | } |
---|
| 721 | } |
---|
| 722 | |
---|