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source: GTP/trunk/Lib/Geom/shared/GeoTool/src/GeoMeshLoader.cpp @ 826

Revision 826, 20.4 KB checked in by gumbau, 19 years ago (diff)
Modification Stripify for mesh discrimination. Adds submesh operation type.

Line
1	/* ==========================================================================
2	* (C) 2005 Universitat Jaume I
3	* ==========================================================================
4	* PROYECT: GAME TOOLS
5	* ==========================================================================*/
6	/** CONTENT:
7	*
8	*
9	* @file GeoMeshLoader.cpp
10	/===========================================================================/
11	#include "GeoMeshLoader.h"
12
13	using namespace Geometry;
14	using namespace std;
15
16	// Jump a chunk.
17	void GeoMeshLoader::jumpChunk(FILE *f)
18	{
19	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
20
21	// Return to the begin of the chunk.
22	fseek(f,long_actual,SEEK_CUR);
23	}
24
25	// Read a chunk.
26	unsigned short GeoMeshLoader::readChunk(FILE *f)
27	{
28	unsigned short id;
29
30	fread(&id,sizeof(unsigned short),1,f);
31	fread(&long_actual,sizeof(unsigned long),1,f);
32
33	return id;
34	}
35
36	// Read geometry vertex element.
37	void GeoMeshLoader::readGeometryVertexElement(FILE f, Mesh geoMesh)
38	{
39	unsigned short source;
40	GeometryElement aux;
41	int i;
42	bool encontrado;
43	VertexElementType vType;
44
45	i = 0;
46	encontrado = false;
47
48	// VertexElementSemantic vSemantic;
49	// unsigned short source; // buffer bind source
50	fread(&source,sizeof(unsigned short),1,f);
51
52	// unsigned short type; // VertexElementType
53	fread(&aux.type,sizeof(unsigned short),1,f);
54
55	vType = static_cast<VertexElementType>(aux.type);
56
57	if (vType == VET_FLOAT3)
58	{
59	printf("%u es float3 ",aux.type);
60	}
61
62	if (vType == VET_FLOAT4)
63	{
64	printf("%u es float4 ",aux.type);
65	}
66
67	if (vType == VET_FLOAT2)
68	{
69	printf("%u es float2 ",aux.type);
70	}
71
72	// unsigned short semantic; // VertexElementSemantic
73	fread(&aux.semantic,sizeof(unsigned short),1,f);
74
75	// vSemantic = static_cast<VertexElementSemantic>(tmp);
76	// unsigned short offset; // start offset in buffer in bytes
77	fread(&aux.offset,sizeof(unsigned short),1,f);
78
79	// unsigned short index; // index of the semantic
80	/*
81	VES_POSITION Position, 3 reals per vertex.
82	VES_BLEND_WEIGHTS Blending weights.
83	VES_BLEND_INDICES Blending indices.
84	VES_NORMAL Normal, 3 reals per vertex.
85	VES_DIFFUSE Diffuse colours.
86	VES_SPECULAR Specular colours.
87	VES_TEXTURE_COORDINATES Texture coordinates.
88	VES_BINORMAL Binormal (Y axis if normal is Z).
89	VES_TANGENT Tangent (X axis if normal is Z).
90	*/
91	fread(&aux.index,sizeof(unsigned short),1,f);
92
93	while ((i < list.size()) && (!encontrado))
94	{
95	if (list[i].source==source)
96	{
97	encontrado = true;
98	}
99	else
100	{
101	i++;
102	}
103	}
104
105	if (encontrado)
106	{
107	list[i].list.push_back(aux);
108	}
109	else
110	{
111	GT aux2;
112
113	aux2.source = source;
114	aux2.list.push_back(aux);
115	list.push_back(aux2);
116	}
117
118	// Debug.
119	cout << "Finish Vertex Element" << endl;
120	}
121
122	// Read geometry vertex declaration.
123	void GeoMeshLoader::readGeometryVertexDeclaration(FILE f, Mesh geoMesh)
124	{
125	unsigned short chunkID;
126	// Find optional geometry chunks
127	if (!feof(f))
128	{
129	chunkID = readChunk(f);
130
131	while(!feof(f) && (chunkID == M_GEOMETRY_VERTEX_ELEMENT ))
132	{
133	switch (chunkID)
134	{
135	case M_GEOMETRY_VERTEX_ELEMENT:
136	cout << "M_GEOMETRY_VERTEX_ELEMENT" << endl;
137	readGeometryVertexElement(f, geoMesh);
138	break;
139	}
140
141	// Get next chunk
142	if (!feof(f))
143	{
144	chunkID = readChunk(f);
145	}
146	}// End while.
147
148	if (!feof(f))
149	{
150	// Backpedal back to start of non-submesh chunk
151	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
152	}
153
154	}// End if (!feof(f))
155	}
156
157	// Read geometry vertex buffer.
158	void GeoMeshLoader::readGeometryVertexBuffer(FILE f, Mesh geoMesh, int option)
159	{
160	unsigned short bindIndex;
161	unsigned short vertexSize;
162	unsigned short headerID;
163	int i;
164	float aux;
165	int k;
166	bool encontrado;
167	float x,y,z;
168	SubMesh *geoSubMesh;
169	VertexBuffer *vertex_buffer;
170
171	i = 0;
172	k = 0;
173	encontrado = false;
174
175
176	if (option == GEOMESH_BUILD)
177	{
178	// If is the main mesh.
179	if (currentSubMesh == -1)
180	{
181	vertex_buffer = geoMesh->mVertexBuffer;
182	}
183	// If is a submesh.
184	else
185	{
186	// Gets the current submesh
187	geoSubMesh = &geoMesh->mSubMesh[currentSubMesh];
188	vertex_buffer = geoSubMesh->mVertexBuffer;
189	}
190	}
191
192	// Index to bind this buffer to
193	fread(&bindIndex,sizeof(unsigned short),1,f);
194
195	// Per-vertex size, must agree with declaration at this index
196	fread(&vertexSize,sizeof(unsigned short),1,f);
197
198	// Debug.
199	cout << "Per-vertex size: "
200	<< vertexSize
201	<< endl;
202
203	// Check for vertex data header
204	headerID = readChunk(f);
205
206	if (headerID != M_GEOMETRY_VERTEX_BUFFER_DATA)
207	{
208	cout << "Can't find vertex buffer data area"
209	<< endl;
210	}
211	else
212	{
213	cout << "M_GEOMETRY_VERTEX_BUFFER_DATA" << endl;
214	}
215
216	while ((i<list.size())&&(!encontrado))
217	{
218	if (list[i].source == bindIndex)
219	{
220	encontrado = true;
221	}
222	else
223	{
224	i++;
225	}
226	}
227
228	// Considero q los van por grupitos de vertices+normales+...
229	// para cada uno de los vertices
230	if (encontrado)
231	{
232	FILE * salida;
233	salida=fopen(nom_salida,"a");
234	cout << "----->Leo los vertices"
235	<< endl;
236
237	for (k=0;k<numVertices;k++)
238	{
239	//Para cada uno de los elementos de ese source.
240	for(int j=0;j<list[i].list.size();j++)
241	{
242	// Son posiciones, vertices
243	if (list[i].list[j].semantic==1)
244	{
245	fread(&x,sizeof(float),1,f);
246	fread(&y,sizeof(float),1,f);
247	fread(&z,sizeof(float),1,f);
248
249	if (option == GEOMESH_BUILD)
250	{
251	vertex_buffer->mVertexInfo \|= VERTEX_POSITION;
252	vertex_buffer->mPosition[k].x = x;
253	vertex_buffer->mPosition[k].y = y;
254	vertex_buffer->mPosition[k].z = z;
255	}
256	}
257	// si no son vertices no lo quiero
258	else
259	{
260	//Se tendría que hacer con un fseek
261	if (list[i].list[j].type==2) //Son 3 floats
262	{
263	fread(&x,sizeof(float),1,f);
264	fread(&y,sizeof(float),1,f);
265	fread(&z,sizeof(float),1,f);
266
267	if (option == GEOMESH_BUILD)
268	{
269	vertex_buffer->mVertexInfo \|= VERTEX_NORMAL;
270	vertex_buffer->mNormal[k].x = x;
271	vertex_buffer->mNormal[k].y = y;
272	vertex_buffer->mNormal[k].z = z;
273	}
274	}
275	if (list[i].list[j].type==1) //Son 2 floats
276	{
277	fread(&x,sizeof(float),1,f);
278	fread(&y,sizeof(float),1,f);
279
280	if (option == GEOMESH_BUILD)
281	{
282	vertex_buffer->mVertexInfo \|= VERTEX_TEXCOORDS;
283	vertex_buffer->mTexCoords[k].x = x;
284	vertex_buffer->mTexCoords[k].y = y;
285	}
286	}
287	}
288	}
289	}
290	fclose(salida);
291	}
292	else
293	{
294	cout << "Error"
295	<< endl;
296	}
297
298	}
299
300	// Read geometry.
301	void GeoMeshLoader::readGeometry(FILE f, Mesh geoMesh, int option)
302	{
303	SubMesh *geoSubMesh;
304	VertexBuffer *vertex_buffer;
305
306	fread(&numVertices,sizeof(unsigned int),1,f);
307
308	if (option == GEOMESH_BUILD)
309	{
310	if (currentSubMesh == -1)
311	{
312	// Get the current vertex buffer.
313	vertex_buffer = geoMesh->mVertexBuffer;
314	}
315	else
316	{
317	// Get the current submesh.
318	geoSubMesh = &geoMesh->mSubMesh[currentSubMesh];
319
320	// Create the VertexBuffer of the submesh.
321	geoSubMesh->mVertexBuffer = new VertexBuffer();
322
323	// Get the current vertex buffer.
324	vertex_buffer = geoSubMesh->mVertexBuffer;
325	}
326
327	// Initialize the VertexBuffer of the current submesh.
328	vertex_buffer->mVertexCount = numVertices;
329
330	// Initialize the position array.
331	vertex_buffer->mPosition = new Vector3[numVertices];
332
333	// Initialize the normal array.
334	vertex_buffer->mNormal = new Vector3[numVertices];
335
336	// Initialize the texture coords array.
337	vertex_buffer->mTexCoords = new Vector2[numVertices];
338	}
339
340	// Find optional geometry chunks
341	if (!feof(f))
342	{
343	unsigned short chunkID = readChunk(f);
344
345	while(!feof(f) &&
346	(chunkID == M_GEOMETRY_VERTEX_DECLARATION \|\|
347	chunkID == M_GEOMETRY_VERTEX_BUFFER ))
348	{
349	switch (chunkID)
350	{
351	case M_GEOMETRY_VERTEX_DECLARATION:
352	cout<<"M_GEOMETRY_VERTEX_DECLARATION\n";
353	readGeometryVertexDeclaration(f, geoMesh);
354	break;
355	case M_GEOMETRY_VERTEX_BUFFER:
356	cout<<"M_GEOMETRY_VERTEX_BUFFER\n";
357	readGeometryVertexBuffer(f, geoMesh,option);
358	break;
359	}
360
361	// Get next chunk.
362	if (!feof(f))
363	{
364	chunkID = readChunk(f);
365	}
366	}
367	if (!feof(f))
368	{
369	// Backpedal back to start of non-submesh chunk.
370	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
371	}
372	}
373	}
374
375	// Read a submesh operation.
376	void GeoMeshLoader::readSubMeshOperation( FILE *f,
377	Mesh *geoMesh,
378	int option)
379	{
380	unsigned short opType;
381	fread(&opType,sizeof(unsigned short),1,f);
382	printf("\tLa render operation es %d\n",opType);
383
384	if (option == GEOMESH_BUILD)
385	{
386	if (opType == 5)
387	{
388	geoMesh->mSubMesh[currentSubMesh].mType = GEO_TRIANGLE_STRIPS;
389	}
390	else
391	{
392	geoMesh->mSubMesh[currentSubMesh].mType = GEO_TRIANGLE_LIST;
393	}
394	}
395	}
396
397	// Read a submesh.
398	void GeoMeshLoader::readSubMesh(FILE f, Mesh geoMesh, int option)
399	{
400	SubMesh *geoSubMesh;
401	unsigned short chunkID;
402	char materialName[255];
403	bool useSharedVertices;
404	unsigned int numIndices;
405	bool idx32bit;
406	FILE *salida;
407
408	switch (option)
409	{
410	case SUBMESH_COUNT:
411	geoMesh->mSubMeshCount++;
412	break;
413	case GEOMESH_BUILD:
414
415	// Debug.
416	cout << "Build GEOMESH" << endl;
417
418	// Initialize the new subMesh.
419	geoSubMesh = &geoMesh->mSubMesh[currentSubMesh];
420
421	cout << "Current SubMesh: "
422	<< currentSubMesh
423	<< endl;
424	}
425
426	//La vacio antes de leer el mesh
427	list.clear();
428
429	fgets(materialName,255,f);
430	printf("\tmaterialName: %s",materialName);
431
432	fread(&useSharedVertices,sizeof(bool),1,f);
433
434	if (option == GEOMESH_BUILD)
435	{
436	// Obtain the flag of vertex shared.
437	geoSubMesh->mSharedVertexBuffer = useSharedVertices;
438
439	if (useSharedVertices)
440	{
441	// The VB of the submesh points to the VB of the mesh.
442	geoSubMesh->mVertexBuffer = geoMesh->mVertexBuffer;
443
444	cout << "\tUse Shared Vertices"
445	<< endl;
446
447	}
448	}
449
450	fread(&numIndices,sizeof(unsigned int),1,f);
451	printf("\tnumIndices: %u\n",numIndices);
452	printf("\tnumTriangles: %u\n",numIndices/3);
453	fread(&idx32bit,sizeof(bool),1,f);
454
455	if (option == GEOMESH_BUILD)
456	{
457	// Sets the index count of the submesh.
458	geoSubMesh->mIndexCount = numIndices;
459
460	// Create the index arrar for this submesh.
461	geoSubMesh->mIndex = new Index[numIndices];
462	}
463
464	if (idx32bit)
465	{
466	printf("\tSon 32 bits por indice\n");
467	}
468	else
469	{
470	printf("\tSon 16 bits por indice\n");
471	}
472
473	salida = fopen(nom_salida,"a");
474
475	fprintf(salida,"\n#----->Leo un subMesh:");
476
477	if (useSharedVertices)
478	{
479	fprintf(salida," shared vertices");
480	}
481	else
482	{
483	fprintf(salida,
484	" no shared vertices %d triangles",
485	numIndices/3);
486	}
487
488	fprintf(salida,"\n# Indexes:");
489
490	//Sumo uno a los vertices porque en el obj no puede hacer un vertice 0
491	if (idx32bit)
492	{
493	unsigned int aux;
494
495	for (int i = 0; i < numIndices; i++)
496	{
497	fread(&aux,sizeof(unsigned int),1,f);
498
499	if (option == GEOMESH_BUILD)
500	{
501	geoSubMesh->mIndex[i] = aux;
502	}
503	}
504	}
505	else
506	{
507	unsigned short aux;
508
509	for (int i = 0; i < numIndices; i++)
510	{
511	fread(&aux,sizeof(unsigned short),1,f);
512
513	if (option == GEOMESH_BUILD)
514	{
515	geoSubMesh->mIndex[i] = aux;
516	}
517	}
518	}
519
520	fclose(salida);
521
522	// M_GEOMETRY chunk
523	// (Optional: present only if useSharedVertices = false)
524	if (!useSharedVertices)
525	{
526	chunkID = readChunk(f);
527
528	if (chunkID != M_GEOMETRY)
529	{
530	printf("Missing geometry data in mesh file\n"); //Error
531	}
532
533	readGeometry(f, geoMesh, option);
534	}
535
536	// Find all bone assignments (if present)
537	if (!feof(f))
538	{
539	chunkID = readChunk(f);
540	while(!feof(f) &&
541	(chunkID == M_SUBMESH_BONE_ASSIGNMENT \|\|
542	chunkID == M_SUBMESH_OPERATION))
543	{
544	switch(chunkID)
545	{
546	case M_SUBMESH_OPERATION:
547
548	cout<<"M_SUBMESH_OPERATION\n";
549
550	readSubMeshOperation(f, geoMesh, option);
551
552	break;
553	case M_SUBMESH_BONE_ASSIGNMENT:
554	jumpChunk(f);
555	break;
556	}
557
558	if (!feof(f))
559	{
560	chunkID = readChunk(f);
561	}
562
563	}
564	if (!feof(f))
565	{
566	// Backpedal back to start of chunk
567	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
568	}
569	}
570
571	}
572
573	// Read a mesh lod information.
574	void GeoMeshLoader::readMeshLodInfo(FILE f, Mesh geoMesh)
575	{
576	unsigned short chunkID;
577	unsigned short i;
578	unsigned short aux;
579	bool aux2;
580
581	// unsigned short numLevels;
582	fread(&aux,sizeof(unsigned short),1,f);
583	// bool manual;
584	// (true for manual alternate meshes, false for generated)
585	fread(&aux2,sizeof(bool),1,f);
586
587	// Loop from 1 rather than 0 (full detail index is not in file)
588	for (i = 1; i < aux; ++i)
589	{
590	chunkID = readChunk(f);
591	if (chunkID != M_MESH_LOD_USAGE)
592	{
593	printf("Missing M_MESH_LOD_USAGE chunk\n"); //Error
594	}
595	else printf("\tM_MESH_LOD_USAGE (%d bytes) ",long_actual);
596	jumpChunk(f);
597
598	}
599	}
600
601	// Read a submesh name table.
602	void GeoMeshLoader::readSubMeshNameTable(FILE f, Mesh geoMesh)
603	{
604	unsigned short chunkID;
605	unsigned short subMeshIndex;
606	char string[255];
607
608	if (!feof(f))
609	{
610	chunkID = readChunk(f);
611
612	while (!feof(f) && (chunkID == M_SUBMESH_NAME_TABLE_ELEMENT ))
613	{
614	printf("M_SUBMESH_NAME_TABLE_ELEMENT %d bytes\n",long_actual);
615
616	// Read in the index of the submesh.
617	fread(&subMeshIndex,sizeof(unsigned short),1,f);
618
619	// Read in the String and map it to its index.
620	fgets(string,255,f);
621	printf("index %u name %s\n",subMeshIndex,string);
622
623	// If we're not end of file get the next chunk ID
624	if (!feof(f))
625	{
626	chunkID = readChunk(f);
627	}
628	}
629	if (!feof(f))
630	{
631	// Backpedal back to start of chunk
632	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
633	}
634	}
635	}
636
637	// Read a mesh file.
638	void GeoMeshLoader::readMesh(FILE f, Mesh geoMesh, int option)
639	{
640	unsigned short chunkID;
641	bool nada;
642
643	// Debug.
644	cout << "Read Mesh"
645	<< endl;
646
647	// Create the VertexBuffer of the mesh.
648	geoMesh->mVertexBuffer = new VertexBuffer();
649	geoMesh->mVertexBuffer->mVertexCount = 0;
650
651	//La vacio antes de leer el mesh
652	list.clear();
653
654	// bool skeletallyAnimated
655	fread(&nada,sizeof(bool),1,f);
656
657	// Find all subchunks
658	if (!feof(f))
659	{
660	chunkID = readChunk(f);
661
662	while(!feof(f) &&
663	(chunkID == M_GEOMETRY \|\|
664	chunkID == M_SUBMESH \|\|
665	chunkID == M_MESH_SKELETON_LINK \|\|
666	chunkID == M_MESH_BONE_ASSIGNMENT \|\|
667	chunkID == M_MESH_LOD \|\|
668	chunkID == M_MESH_BOUNDS \|\|
669	chunkID == M_SUBMESH_NAME_TABLE \|\|
670	chunkID == M_EDGE_LISTS))
671	{
672	switch(chunkID)
673	{
674	case M_GEOMETRY:
675
676	// Debug.
677	cout << "Geometry" << endl;
678
679	readGeometry(f, geoMesh, option);
680	break;
681
682	case M_SUBMESH:
683
684	cout << "SubMesh" << endl;
685
686	if (option == GEOMESH_BUILD)
687	{
688	// Increments the current submesh.
689	currentSubMesh++;
690	}
691
692	readSubMesh(f, geoMesh, option);
693
694	break;
695
696	case M_MESH_SKELETON_LINK:
697
698	cout << "M_MESH_SKELETON_LINK "
699	<< long_actual
700	<< " bytes\n";
701
702	jumpChunk(f);
703	break;
704
705	case M_MESH_BONE_ASSIGNMENT:
706
707	cout << "M_MESH_BONE_ASSIGNMENT "
708	<< long_actual
709	<< " bytes\n";
710
711	break;
712
713	case M_MESH_LOD:
714
715	cout << "M_MESH_LOD\n";
716	readMeshLodInfo(f, geoMesh);
717	break;
718
719	case M_MESH_BOUNDS:
720
721	cout << "M_MESH_BOUNDS "
722	<< long_actual
723	<< " bytes\n";
724
725	jumpChunk(f);
726	break;
727
728	case M_SUBMESH_NAME_TABLE:
729
730	cout << "M_SUBMESH_NAME_TABLE "
731	<< long_actual
732	<< " bytes\n";
733
734	readSubMeshNameTable(f, geoMesh);
735	break;
736
737	case M_EDGE_LISTS:
738
739	cout << "M_EDGE_LISTS "
740	<< long_actual
741	<< " bytes\n";
742
743	jumpChunk(f);
744	break;
745	}
746
747	if (!feof(f))
748	{
749	chunkID = readChunk(f);
750	}
751
752	}
753
754	if (!feof(f))
755	{
756	// Backpedal back to start of chunk
757	fseek(f,-(long)CHUNK_OVERHEAD_SIZE,1);
758	printf("Malo\n");
759	}
760	}
761
762	}
763
764	/*
765	Allocate memory to the array of strips
766	*/
767	SubMesh* GeoMeshLoader::BuildStripsGeoSubMesh(SubMesh* geoSubMesh)
768	{
769	bool head_found;
770	bool tail_found;
771	int strip_count;
772	int tailIndex;
773	size_t tail;
774
775
776	head_found = false;
777	tail_found = false;
778	geoSubMesh->mStripCount = 1;
779
780	// Foreachone of the indices.
781	// Obtains the number of triangle strips.
782	for (int i = 0; i < (geoSubMesh->mIndexCount - 1); i++)
783	{
784	if (geoSubMesh->mIndex[i] == geoSubMesh->mIndex[i+1])
785	{
786	if (head_found)
787	{
788	tail_found = true;
789	}
790	else
791	{
792	head_found = true;
793	}
794
795	// Jump one index.
796	i++;
797	}
798	else
799	{
800	// Increments the number of triangle strips.
801	if (tail_found)
802	{
803	geoSubMesh->mStripCount++;
804	}
805
806	head_found = false;
807	tail_found = false;
808	}
809	}
810
811	geoSubMesh->mStrip = (Index*) malloc( sizeof(Index)
812	*
813	geoSubMesh->mStripCount);
814
815	// Number of strips. Initially there is one triangle strip.
816	strip_count = 1;
817
818	head_found = false;
819	tail_found = false;
820
821	// Initialize the fist triangle strip.
822	geoSubMesh->mStrip[0] = &geoSubMesh->mIndex[0];
823
824	// Foreachone of the indices.
825	// Assigns the beginning of the triangle strips.
826	for(int i = 0;i < (geoSubMesh->mIndexCount - 1); i++)
827	{
828	if(geoSubMesh->mIndex[i] == geoSubMesh->mIndex[i+1])
829	{
830	if(head_found)
831	{
832	if (!tail_found)
833	{
834	tailIndex = i;
835	}
836
837	tail_found = true;
838	}
839	else
840	{
841	head_found = true;
842	}
843
844	// Jump one index.
845	i++;
846	}
847	else
848	{
849	// Increments the number of triangle strips.
850	if(tail_found)
851	{
852	geoSubMesh->mStrip[strip_count++] = &geoSubMesh->mIndex[tailIndex];
853	}
854
855	head_found = false;
856	tail_found = false;
857	}
858	}
859
860	return geoSubMesh;
861	}
862
863	// Loads a mesh.
864	Mesh* GeoMeshLoader::load(char *nameFileMesh)
865	{
866	unsigned short uno;
867	unsigned short chunkID;
868	char version[255];
869	char kk;
870	FILE *salida;
871	FILE *pFile;
872	SubMesh *geosubmesh;
873
874	// Initialize the current submesh;
875	currentSubMesh = -1;
876
877	std::cout << "Load a new Mesh"
878	<< std::endl;
879
880	// Initialize the return value.
881	geoMesh = new Mesh();
882
883	// Open the mesh file.
884	pFile = fopen( nameFileMesh, "rb" );
885
886	if (!pFile)
887	{
888	printf("No he encontrado el fichero\n");
889	exit(0);
890	}
891
892	// Count the submeshes
893	// and next build the geomesh.
894	for (int option = 0; option < 2;option++)
895	{
896	fread(&uno,sizeof(unsigned short),1,pFile);
897
898	if (uno != M_HEADER)
899	{
900	cout << "no se ha encontrado el header"
901	<< endl;
902	}
903
904	// Read version.
905	fgets(version,255,pFile);
906
907	cout << version << endl;
908
909	if (strcmp(version,"[MeshSerializer_v1.30]\n"))
910	{
911	cout <<
912	"No se puede trabajar con versiones de"
913	<<
914	" .mesh diferentes de la 1.3"
915	<<
916	endl;
917	}
918
919	salida = fopen(nom_salida,"w");
920
921	fprintf(salida,"# Empiezo el fichero:");
922
923	fclose(salida);
924
925	while(!feof(pFile))
926	{
927	chunkID = readChunk(pFile);
928
929	switch (chunkID)
930	{
931	case M_MESH:
932	readMesh(pFile, geoMesh, option);
933	break;
934	}
935	}
936
937	// Create the submesh array
938	if (option == SUBMESH_COUNT)
939	{
940	cout << "---------------"
941	<< endl;
942
943	cout << "SubMesh Count: "
944	<< geoMesh->mSubMeshCount
945	<< endl;
946
947	geoMesh->mSubMesh = new SubMesh[geoMesh->mSubMeshCount];
948	}
949
950	if (feof(pFile))
951	{
952	cout << "------->Hemos llegado al final del fichero"
953	<< endl;
954	}
955
956	//cout << "Press enter to exit\n";
957
958	// Move the curso to the begining of the file.
959	fseek(pFile,0,SEEK_SET);
960	}
961
962	// Goes to the end of the file.
963	fseek(pFile,0,SEEK_END);
964
965	// Gets the size of the file.
966	mFileSize = ftell(pFile);
967
968	// Close the mesh file.
969	fclose(pFile);
970
971	for (int submesh = 0; submesh < geoMesh->mSubMeshCount; submesh++)
972	{
973	// Gets the actual submesh.
974	geosubmesh = &geoMesh->mSubMesh[submesh];
975
976	if (geosubmesh->mType == Geometry::GEO_TRIANGLE_STRIPS)
977	{
978	// Fill the strips list.
979	geosubmesh = BuildStripsGeoSubMesh(geosubmesh);
980	}
981	}
982
983	return geoMesh;
984	}
985
986	// Get the size in bytes of the file.
987	size_t GeoMeshLoader::getFileSize()
988	{
989	return mFileSize;
990	}
991
992	// Constructor
993	GeoMeshLoader::GeoMeshLoader()
994	{
995	nom_salida = "salida22.obj";
996	geoMesh = NULL;
997	mFileSize = 0;
998	}
999
1000	// Destroyer.
1001	GeoMeshLoader::~GeoMeshLoader()
1002	{
1003	delete geoMesh;
1004	}
1005

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