Object.cpp 12.4 KB
Newer Older
1
#include "Object.h"
Anakin's avatar
Anakin committed
2
#include <iostream>
3
4
5
6
7
8



/////////////////////////////////////////////////////////////////////////
// public constructor/destructor

Anakin's avatar
Anakin committed
9
Object::Object(const char* path)
10
{
Anakin's avatar
Anakin committed
11
	// open file
12
	fsMesh.open(path, std::ios::in | std::ios::binary);
13

Anakin's avatar
Anakin committed
14
15
	if (!fsMesh.is_open())
		throw std::invalid_argument(std::string("file not found: ") += path);
16

17
	// jump into msh2 todo: search for MSH2 if there is a shadowvolume
18
19
20
21
22
23
24
	fsMesh.seekg(8);
	char tempChunkName[5] = { 0 };
	fsMesh.read(reinterpret_cast<char*>(&tempChunkName[0]), sizeof(tempChunkName) - 1);

	if (strcmp(tempChunkName, "MSH2"))
		throw std::invalid_argument(std::string("corrupted file MSH2 expected instead of ") += tempChunkName);

25
26
	std::uint32_t tempSize;
	fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
27

28
29
	// get all sub chunks from MSH2
	loadChunks(lChunkMsh2, fsMesh.tellg(), tempSize);
30

31
	// search for all MODL Chunks
Anakin's avatar
Anakin committed
32
	for (std::list<ChunkHeader*>::iterator it = lChunkMsh2.begin(); it != lChunkMsh2.end(); it++)
33
34
35
	{
		if (!strcmp("MODL", (*it)->name))
		{
Anakin's avatar
Anakin committed
36
			Modl* tempModl = new Modl;
Anakin's avatar
Anakin committed
37

Anakin's avatar
Anakin committed
38
39
			// get all subchunks
			std::list<ChunkHeader*> tempChunks;
Anakin's avatar
Anakin committed
40
41
42
			loadChunks(tempChunks, (*it)->position, (*it)->size);
			
			// evaluate MODL subchunks
Anakin's avatar
Anakin committed
43
			analyseModlChunks(tempModl, tempChunks);
Anakin's avatar
Anakin committed
44
45
46
47

			//clean up
			while (!tempChunks.empty())
			{
Anakin's avatar
Anakin committed
48
				ChunkHeader* tempCursor = tempChunks.front();
Anakin's avatar
Anakin committed
49
50
51
				tempChunks.pop_front();
				delete tempCursor;
			}
Anakin's avatar
Anakin committed
52
53
54

			// save Model data
			lModls.push_back(tempModl);
55
56
		}
	}
57

58
59
60
61
62
63
64
65
	// close file
	fsMesh.close();
}

Object::~Object()
{
	//delete Chunk list;	
}
66
67


68

69
70
/////////////////////////////////////////////////////////////////////////
// private functions
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
void Object::setModlDefault(Modl * model)
{
	model->name = "";
	model->parent = "";
	model->type = null;
	model->renderFlags = -1;
	model->tran.scale[0] = 0;
	model->tran.scale[1] = 0;
	model->tran.scale[2] = 0;
	model->tran.rotation[0] = 0;
	model->tran.rotation[1] = 0;
	model->tran.rotation[2] = 0;
	model->tran.rotation[3] = 0;
	model->tran.translation[0] = 0;
	model->tran.translation[1] = 0;
	model->tran.translation[2] = 0;
	model->swci.type = -1;
	model->swci.data1 = -1;
	model->swci.data2 = -1;
	model->swci.data3 = -1;
	model->texture = "";
	model->vertex = NULL;
	model->uv = NULL;
	model->mesh = NULL;
}

Anakin's avatar
Anakin committed
98
void Object::loadChunks(std::list<ChunkHeader*>& destination, std::streampos start, const std::uint32_t end)
99
{
100
	// jump to first chunk
101
	fsMesh.seekg(start);
102

Anakin's avatar
Anakin committed
103
104
	do
	{
Anakin's avatar
Anakin committed
105
		ChunkHeader* tempHeader = new ChunkHeader();
106

107
108
109
		fsMesh.read(reinterpret_cast<char*>(&tempHeader->name[0]), sizeof(tempHeader->name) - 1);
		fsMesh.read(reinterpret_cast<char*>(&tempHeader->size), sizeof(tempHeader->size));
		tempHeader->position = fsMesh.tellg();
110

111
		destination.push_back(tempHeader);
112

113
		fsMesh.seekg(tempHeader->size, std::ios_base::cur);
114

115
116
		// reached end
		if (fsMesh.tellg() - start == end)
Anakin's avatar
Anakin committed
117
			break;
118
119
120
121
122
123
124
125
126
127

		// error. Maybe the size information is corrupted
		if (!fsMesh.good())
		{
			std::cout << "WARNING: corrupted file. Trying to continue" << std::endl;
			fsMesh.clear();
			break;
		}

	} while (true);
128
129

	std::cout << "got all chunks, totaly found: " << destination.size() << std::endl;
Anakin's avatar
Anakin committed
130

131
132
}

Anakin's avatar
Anakin committed
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
void Object::analyseModlChunks(Modl* dataDestination, std::list<ChunkHeader*>& chunkList)
{
	for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
	{
		if (!strcmp("MTYP", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			std::uint32_t tempType;
			fsMesh.read(reinterpret_cast<char*>(&tempType), sizeof(tempType));
			dataDestination->type = (Mtyp)tempType;
		}

		if (!strcmp("PRNT", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			char tempName[33] = { 0 };
			fsMesh.read(reinterpret_cast<char*>(&tempName[0]), (*it)->size > 32 ? 32 : (*it)->size);
			dataDestination->parent = tempName;
		}

		if (!strcmp("NAME", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
156
157
158
			char* buffer = new char[(*it)->size];
			fsMesh.read(buffer, (*it)->size);
			dataDestination->name = buffer;
Anakin's avatar
Anakin committed
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
		}

		if (!strcmp("FLGS", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->renderFlags), sizeof(dataDestination->renderFlags));
		}

		if (!strcmp("TRAN", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.scale[0]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.scale[1]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.scale[2]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.rotation[0]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.rotation[1]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.rotation[2]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.rotation[3]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.translation[0]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.translation[1]), sizeof(float));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->tran.translation[2]), sizeof(float));
		}

		if (!strcmp("GEOM", (*it)->name))
		{
			// get all subchunks
			std::list<ChunkHeader*> tempGeomChunks;
			loadChunks(tempGeomChunks, (*it)->position, (*it)->size);

			// evaluate GEOM subchunks
			analyseGeomChunks(dataDestination, tempGeomChunks);

			// clean up
			while (!tempGeomChunks.empty())
			{
				ChunkHeader* tempCursor = tempGeomChunks.front();
				tempGeomChunks.pop_front();
				delete tempCursor;
			}
		}

		if (!strcmp("SWCI", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->swci.type), sizeof(dataDestination->swci.type));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->swci.data1), sizeof(dataDestination->swci.data1));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->swci.data2), sizeof(dataDestination->swci.data2));
			fsMesh.read(reinterpret_cast<char*>(&dataDestination->swci.data3), sizeof(dataDestination->swci.data3));
		}
	}

}

void Object::analyseGeomChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{

	for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
	{
		if (!strcmp("SEGM", (*it)->name))
		{
			// get all subchunks
			std::list<ChunkHeader*> tempSegmChunks;
			loadChunks(tempSegmChunks, (*it)->position, (*it)->size);

			// evaluate SEGM subchunks
			analyseSegmChunks(dataDestination, tempSegmChunks);

			// clean up
			while (!tempSegmChunks.empty())
			{
				ChunkHeader* tempCursor = tempSegmChunks.front();
				tempSegmChunks.pop_front();
				delete tempCursor;
			}
		}
234
		else if (!strcmp("CLTH", (*it)->name))
Anakin's avatar
Anakin committed
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
		{
			// get all subchunks
			std::list<ChunkHeader*> tempClthChunks;
			loadChunks(tempClthChunks, (*it)->position, (*it)->size);

			// evaluate CLTH subchunks
			analyseClthChunks(dataDestination, tempClthChunks);

			// clean up
			while (!tempClthChunks.empty())
			{
				ChunkHeader* tempCursor = tempClthChunks.front();
				tempClthChunks.pop_front();
				delete tempCursor;
			}
		}
	}

}

void Object::analyseSegmChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{
	for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
	{
		if (!strcmp("SHDW", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			/* shadow mesh geometry

			long int - 4 - number of vertex positions
			float[3][] - 12 each - vertex positions (XYZ)
			long int - 4 - number of edges
			short int[4][] - 8 each - edge the following 4 entries from one edge
			> short int - 2 - vertex index of this edge, referes to the vertex list
			> short int - 2 - Reference into an edge. Defines the target vertex (the local edge vertex of the referenced edge) to which the edge should be dran from the local vertex
			> short int - 2 - Second reference into an edge. In all example .msh files I've seen this always refers to the same vertex as the first edge reference
			> short int - 2 - MAX_VALUE of short integers (65535). Indicates the end of this edge
			*/

		}

		if (!strcmp("MATI", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			// material index index into MATL
			// long int - 4 - material index
		}

		if (!strcmp("POSL", (*it)->name))
		{
285
			readVertex(dataDestination, (*it)->position);
Anakin's avatar
Anakin committed
286
287
288
289
290
291
292
293
294
295
296
297
		}

		if (!strcmp("NRML", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
			// List of normals
			// long int - 4 - number of normal vectores stored in this list
			// float[3][] - 12 each - UVW vector for each vertex
		}

		if (!strcmp("UV0L", (*it)->name))
		{
298
			readUV(dataDestination, (*it)->position);
Anakin's avatar
Anakin committed
299
300
301
302
		}

		if (!strcmp("STRP", (*it)->name))
		{
303
			readMesh(dataDestination, (*it)->position);
Anakin's avatar
Anakin committed
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
			fsMesh.seekg((*it)->position);
			/*
			List of triangles strips. The start of a strip is indicated by 2 entries
			with a high bit set (0x8000 or 32768 added). Triangles are listed CW, CCW,
			CW, CCW... NOTE: In some meshes this chunk has a trailing short which is not
			calculated into the length/size of this chunk or the # of indices. This
			short can be ignored. If added to the last polygon it will break it as it
			always seems to be 0.
			long int - 4 - number of indicies into POSL
			short int[] - 2 each - index into POSL the indices will form polygons
			*/
		}
	}
}

void Object::analyseClthChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{
	for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
	{
		if (!strcmp("CTEX", (*it)->name))
		{
			fsMesh.seekg((*it)->position);
326
327
328
			char* buffer = new char[(*it)->size];
			fsMesh.read(buffer, (*it)->size);
			dataDestination->texture = buffer;
Anakin's avatar
Anakin committed
329
330
331
		}

		if (!strcmp("CPOS", (*it)->name))
332
			readVertex(dataDestination, (*it)->position);
Anakin's avatar
Anakin committed
333
334

		if (!strcmp("CUV0", (*it)->name))
335
			readUV(dataDestination, (*it)->position);
Anakin's avatar
Anakin committed
336
337

		if (!strcmp("CMSH", (*it)->name))
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
			readMesh(dataDestination, (*it)->position);
	}

}

void Object::readVertex(Modl* dataDestination, std::streampos position)
{
	std::uint32_t tempSize;
	fsMesh.seekg(position);
	fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));

	dataDestination->vertex = new float[tempSize * 3];

	for (unsigned int i = 0; i < tempSize; i += 3)
	{
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->vertex[i]), sizeof(float));
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->vertex[i + 1]), sizeof(float));
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->vertex[i + 2]), sizeof(float));
	}
}

void Object::readUV(Modl* dataDestination, std::streampos position)
{
	std::uint32_t tempSize;
	fsMesh.seekg(position);
	fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));

	dataDestination->uv = new float[tempSize * 2];

	for (unsigned int i = 0; i < tempSize; i += 2)
	{
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->uv[i]), sizeof(float));
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->uv[i + 1]), sizeof(float));
	}
}

void Object::readMesh(Modl* dataDestination, std::streampos position)
{
	fsMesh.seekg(position);
	fsMesh.read(reinterpret_cast<char*>(&dataDestination->meshSize), sizeof(dataDestination->meshSize));

	dataDestination->mesh = new std::uint32_t[dataDestination->meshSize * 3];
Anakin's avatar
Anakin committed
380

381
382
383
384
385
	for (unsigned int i = 0; i < dataDestination->meshSize; i += 3)
	{
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i]), sizeof(std::uint32_t));
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i + 1]), sizeof(std::uint32_t));
		fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i + 2]), sizeof(std::uint32_t));
Anakin's avatar
Anakin committed
386
387
	}

388
389
390
391

	for (unsigned int i = 0; i < dataDestination->meshSize; i += 3)
		std::cout << dataDestination->mesh[i] << " " << dataDestination->mesh[i + 1] << " " << dataDestination->mesh[i + 2] << std::endl;

Anakin's avatar
Anakin committed
392
393
}

394

Anakin's avatar
Anakin committed
395
396
/////////////////////////////////////////////////////////////////////////
// public getter
397

398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
std::vector<GLfloat> Object::getVertex() const
{
	std::vector<GLfloat> tempData;

	for (std::list<Modl*>::const_iterator it = lModls.begin(); it != lModls.end(); it++)
	{
		for (int i = 0; i < (*it)->meshSize; i++)
		{

			int tempIndex = (*it)->mesh[i];
			tempData.push_back((GLfloat)(*it)->vertex[(*it)->mesh[i]]);
		}
	}

	return tempData;
}

std::vector<GLfloat> Object::getUV() const
{
	std::vector<GLfloat> tempData;

	for (std::list<Modl*>::const_iterator it = lModls.begin(); it != lModls.end(); it++)
		for (int i = 0; i < (*it)->meshSize; i++)
			tempData.push_back((GLfloat)(*it)->uv[(*it)->mesh[i]]);

	return tempData;
}
425
426
427
428
429


/////////////////////////////////////////////////////////////////////////
// public functions