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  • Committer: Erik Wikström
  • Date: 2013-03-28 07:43:18 UTC
  • mto: This revision was merged to the branch mainline in revision 7.
  • Revision ID: wikxen@gmail.com-20130328074318-9v6krijkyap59nct
Removed trunk folder and moved its contents to the root

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ObjConv/objtojson.c
1
 
#include <stdio.h>
2
 
#include <stdlib.h>
3
 
#include <string.h>
4
 
 
5
 
void parseface(char *facedata,int *varray,int *narray,int *tarray,int position, int hasuv, int hasnormals) {
6
 
        char workstr[10];
7
 
        int readpos = 0;
8
 
        int i;
9
 
        for(i = 0; i < 3; i++) {
10
 
                int pos = 0;
11
 
                while(readpos < strlen(facedata) && facedata[readpos] != '/') {
12
 
                        workstr[pos] = facedata[readpos];
13
 
                        pos++;
14
 
                        readpos++;
15
 
                }
16
 
                workstr[pos] = 0;
17
 
                pos = 0;
18
 
                readpos++;
19
 
 
20
 
                // -1 to compensate for wavefront file starting on 1 and not 0
21
 
                if(i == 0) {
22
 
                        varray[position] = atoi(workstr) - 1;
23
 
                } else if((i == 1) && (hasuv > 0)) {
24
 
                        tarray[position] = atoi(workstr) - 1;
25
 
                } else if((i == 2) && (hasnormals > 0)) {
26
 
                        narray[position] = atoi(workstr) - 1;
27
 
                }
28
 
        }
29
 
}
30
 
 
31
 
void loadobj(char *objfilename, char *openobj, char *outputfile) {
32
 
        FILE * pFile;
33
 
        pFile = fopen(objfilename, "r");
34
 
        char *buf;
35
 
        buf = (char*)malloc(1024);
36
 
        char *result;
37
 
 
38
 
        // foundobj is true if an object with a certain name is found
39
 
        // Set foundobj to true if we are loading all objects
40
 
        int foundobj = 0;
41
 
        if(strcmp(openobj, "ALL") == 0) {
42
 
                foundobj = 1;
43
 
        }
44
 
        int vertcount = 0;
45
 
        int normalcount = 0;
46
 
        int texturecount = 0;
47
 
        int facecount = 0;
48
 
        int polycount = 0;
49
 
        int quadcount = 0;
50
 
        int trianglecount = 0;
51
 
 
52
 
        // Global Variables for Object
53
 
        float *vertexlist;
54
 
        float *uvlist;
55
 
        float *normallist;
56
 
        int *trianglelist;
57
 
        int *quadlist;
58
 
        char *resultp1, *resultp2, *resultp3, *resultp4, *resultp5;
59
 
 
60
 
        if(pFile) {
61
 
                printf("Msg: Success opening: %s!\n", objfilename);
62
 
                while(fgets(buf, 1024, pFile) != NULL) {
63
 
                        if(buf[0] == '#') {
64
 
                                // Comment - Do Nothing
65
 
                        } else {
66
 
                                result = strtok(buf, " \n\t");
67
 
                                if(result != NULL) {
68
 
                                        if(strcmp(result, "v") == 0) {
69
 
                                                if(foundobj) {
70
 
                                                        //Increase vertex counter
71
 
                                                        vertcount++;
72
 
                                                }
73
 
                                        } else if(strcmp(result, "vt") == 0) {
74
 
                                                if(foundobj) {
75
 
                                                        // Increase texture coordinate counter
76
 
                                                        texturecount++;
77
 
                                                }
78
 
                                        } else if(strcmp(result, "vn") == 0) {
79
 
                                                if(foundobj) {
80
 
                                                        // Increase normal counter
81
 
                                                        normalcount++;
82
 
                                                }
83
 
                                        } else if(strcmp(result, "f") == 0) {
84
 
                                                if(foundobj) {
85
 
                                                        // Increase face counter
86
 
                                                        facecount++;
87
 
                                                        resultp1 = strtok(NULL, " \n\t");
88
 
                                                        resultp2 = strtok(NULL, " \n\t");
89
 
                                                        resultp3 = strtok(NULL, " \n\t");
90
 
                                                        resultp4 = strtok(NULL, " \n\t");
91
 
                                                        resultp5 = strtok(NULL, " \n\t");
92
 
                                                        if((resultp4 != NULL)&&(resultp5 == NULL)) {
93
 
                                                                quadcount++;
94
 
                                                        } else if((resultp3 != NULL)&&(resultp4 == NULL)) {
95
 
                                                                trianglecount++;
96
 
                                                        } else {
97
 
                                                                polycount++;
98
 
                                                        }
99
 
                                                }
100
 
                                        } else if(strcmp(result, "g") == 0) {
101
 
                                                if(result=strtok(NULL, " \n\t")) {
102
 
                                                        if(!strcmp(openobj, result)) {
103
 
                                                                foundobj = 1;
104
 
                                                        }
105
 
                                                } else {
106
 
                                                        printf("Error: Failed to read object name\n");
107
 
                                                }
108
 
                                        } else {
109
 
                                                //printf("O: %s \n",buf);
110
 
                                        }
111
 
                                }
112
 
                        }
113
 
                }
114
 
 
115
 
                if(polycount > 0) {
116
 
                        printf("Warning: Object %s in file %s contains faces that will be ignored, with more than 4 vertices.!\n", objfilename, openobj);
117
 
                }
118
 
 
119
 
                if(((trianglecount + quadcount) > 0)) {
120
 
                        // Set foundobj to true if we are loading all objects
121
 
                        if(strcmp(openobj, "ALL")) {
122
 
                                foundobj = 1;
123
 
                        }
124
 
 
125
 
                        // Seek to beginning again
126
 
                        fseek(pFile, 0, SEEK_SET);
127
 
 
128
 
                        // Allocate local buffers
129
 
                        float *localvertexlist = (float *) malloc (sizeof(float) * vertcount * 3);
130
 
                        float *localnormallist = (float *) malloc (sizeof(float) * normalcount * 3);
131
 
                        float *localuvlist = (float *) malloc (sizeof(float) * texturecount * 2);
132
 
                        int *localquadlist = (int *) malloc (sizeof(int) * quadcount * 4);
133
 
                        int *localquadlistuv = (int *) malloc (sizeof(int) * quadcount * 4);
134
 
                        int *localquadlistnormal = (int *) malloc (sizeof(int) * quadcount * 4);
135
 
                        int *localtrianglelist = (int *) malloc (sizeof(int) * trianglecount * 3);
136
 
                        int *localtrianglelistuv = (int *) malloc (sizeof(int) * trianglecount * 3);
137
 
                        int *localtrianglelistnormal = (int *) malloc (sizeof(int) * trianglecount * 3);
138
 
 
139
 
                        // Reset counters for second pass
140
 
                        trianglecount = 0;
141
 
                        quadcount = 0;
142
 
                        normalcount = 0;
143
 
                        vertcount = 0;
144
 
                        texturecount = 0;
145
 
 
146
 
                        while(fgets(buf, 1024, pFile) != NULL) {
147
 
                                if(buf[0] == '#') {
148
 
                                        // Comment - Do Nothing
149
 
                                } else {
150
 
                                        result = strtok(buf, " \n\t");
151
 
                                        if(result != NULL) {
152
 
                                                if(strcmp(result, "v") == 0) {
153
 
                                                        if(foundobj) {
154
 
                                                                result = strtok(NULL, " \n\t");
155
 
                                                                localvertexlist[(vertcount * 3)] = atof(result);
156
 
                                                                result = strtok(NULL, " \n\t");
157
 
                                                                localvertexlist[(vertcount * 3) + 1] = atof(result);
158
 
                                                                result = strtok(NULL, " \n\t");
159
 
                                                                localvertexlist[(vertcount * 3) + 2] = atof(result);
160
 
                                                                vertcount++;
161
 
                                                        }
162
 
                                                } else if(strcmp(result, "vt") == 0) {
163
 
                                                        if(foundobj) {
164
 
                                                                result = strtok(NULL, " \n\t");
165
 
                                                                localuvlist[(texturecount * 2)] = atof(result);
166
 
                                                                result = strtok(NULL, " \n\t");
167
 
                                                                localuvlist[(texturecount * 2) + 1] = atof(result);
168
 
                                                                texturecount++;
169
 
                                                        }
170
 
                                                } else if(strcmp(result, "vn") == 0) {
171
 
                                                        if(foundobj) {
172
 
                                                                result = strtok(NULL, " \n\t");
173
 
                                                                localnormallist[(normalcount * 3)] = atof(result);
174
 
                                                                result = strtok(NULL, " \n\t");
175
 
                                                                localnormallist[(normalcount * 3) + 1] = atof(result);
176
 
                                                                result = strtok(NULL, " \n\t");
177
 
                                                                localnormallist[(normalcount * 3) + 2] = atof(result);
178
 
                                                                normalcount++;
179
 
                                                        }
180
 
                                                } else if(strcmp(result, "f") == 0) {
181
 
                                                        if(foundobj) {
182
 
                                                                resultp1 = strtok(NULL, " \n\t");
183
 
                                                                resultp2 = strtok(NULL, " \n\t");
184
 
                                                                resultp3 = strtok(NULL, " \n\t");
185
 
                                                                resultp4 = strtok(NULL, " \n\t");
186
 
                                                                resultp5 = strtok(NULL, " \n\t");
187
 
                                                                if((resultp4 != NULL)&&(resultp5 == NULL)) {
188
 
                                                                        // Parse all 4 points in quad
189
 
                                                                        parseface(resultp1, localquadlist, localquadlistnormal, localquadlistuv, quadcount * 4, texturecount, normalcount);
190
 
                                                                        parseface(resultp2, localquadlist, localquadlistnormal, localquadlistuv, (quadcount * 4) + 1, texturecount, normalcount);
191
 
                                                                        parseface(resultp3, localquadlist, localquadlistnormal, localquadlistuv, (quadcount * 4) + 2, texturecount, normalcount);
192
 
                                                                        parseface(resultp4, localquadlist, localquadlistnormal, localquadlistuv, (quadcount * 4) + 3, texturecount, normalcount);
193
 
                                                                        quadcount++;
194
 
                                                                } else if((resultp3 != NULL)&&(resultp4 == NULL)) {
195
 
                                                                        // Parse all 3 points in triangle
196
 
                                                                        parseface(resultp1, localtrianglelist, localtrianglelistnormal, localtrianglelistuv, trianglecount * 3, texturecount, normalcount);
197
 
                                                                        parseface(resultp2, localtrianglelist, localtrianglelistnormal, localtrianglelistuv, (trianglecount * 3) + 1, texturecount, normalcount);
198
 
                                                                        parseface(resultp3, localtrianglelist, localtrianglelistnormal, localtrianglelistuv, (trianglecount * 3) + 2, texturecount, normalcount);
199
 
                                                                        trianglecount++;
200
 
                                                                }
201
 
                                                        }
202
 
                                                } else if(strcmp(result, "g") == 0) {
203
 
                                                        if(result = strtok(NULL, " \n\t")) {
204
 
                                                                if(!strcmp(openobj, result)) {
205
 
                                                                        foundobj = 1;
206
 
                                                                }
207
 
                                                        }
208
 
                                                }
209
 
                                        }
210
 
                                }
211
 
                        }
212
 
                        int i = 0;
213
 
                        // Allocate buffers
214
 
                        vertexlist = (float *) malloc (sizeof(float) * vertcount * 3);
215
 
                        normallist = (float *) malloc (sizeof(float) * vertcount * 3);
216
 
                        uvlist = (float *) malloc (sizeof(float) * vertcount * 2);
217
 
                        trianglelist = (int *) malloc (sizeof(int) * trianglecount * 3);
218
 
                        quadlist = (int *) malloc (sizeof(int) * quadcount * 4);
219
 
 
220
 
                        // Copy data from Per Face model to Per Vertex model first for triangles and then for quads
221
 
                        // If there are triangle normals, copy triangle normal data 
222
 
                        if(normalcount > 0) {
223
 
                                printf("Msg: Copying Triangle Normals: %i / %i !\n", normalcount, trianglecount);
224
 
                                for(i = 0; i < trianglecount * 3; i++) {
225
 
                                        // Normal X
226
 
                                        normallist[localtrianglelist[i] * 3] = localnormallist[localtrianglelistnormal[i] * 3];
227
 
                                        // Normal Y
228
 
                                        normallist[(localtrianglelist[i] * 3 ) + 1 ] = localnormallist[(localtrianglelistnormal[i] * 3) + 1 ];
229
 
                                        // Normal Z
230
 
                                        normallist[(localtrianglelist[i] * 3) + 2] = localnormallist[(localtrianglelistnormal[i] * 3) + 2];
231
 
                                }
232
 
                                for(i = 0; i < quadcount * 4; i++) {
233
 
                                        // Normal X
234
 
                                        normallist[localquadlist[i] * 3] = localnormallist[localquadlistnormal[i] * 3];
235
 
                                        // Normal Y
236
 
                                        normallist[(localquadlist[i] * 3) + 1] = localnormallist[(localquadlistnormal[i] * 3) + 1];
237
 
                                        // Normal Z
238
 
                                        normallist[(localquadlist[i] * 3) + 2] = localnormallist[(localquadlistnormal[i] * 3) + 2];
239
 
                                }
240
 
                        } else {
241
 
                                printf("Msg: No Triangle Normals to Copy\n");
242
 
                        }
243
 
 
244
 
                        // If there are triangle uv coordinates, copy uv coordinate data
245
 
                        if(texturecount > 0) {
246
 
                                printf("Msg: Copying Triangle UV Coordinates: %i / %i !\n", texturecount, trianglecount);
247
 
                                for(i = 0; i < trianglecount * 3; i++) {
248
 
                                        // U Coordinate
249
 
                                        uvlist[localtrianglelist[i] * 3] = localuvlist[localtrianglelistuv[i] * 3];
250
 
                                        // V Coordinate
251
 
                                        uvlist[(localtrianglelist[i] * 3) + 1] = localuvlist[(localtrianglelistuv[i] * 3) + 1];
252
 
                                }
253
 
                                for(i = 0;i < quadcount * 4; i++) {
254
 
                                        // U Coordinate
255
 
                                        uvlist[localquadlist[i] * 3] = localuvlist[localquadlistuv[i] * 3];
256
 
                                        // V Coordinate
257
 
                                        uvlist[(localquadlist[i] * 3) + 1] = localuvlist[(localquadlistuv[i] * 3) + 1];
258
 
                                }
259
 
                        } else {
260
 
                                printf("Msg: No Triangle UV Coordinates to Copy\n");
261
 
                        }
262
 
 
263
 
                        // Same for Quads
264
 
                        printf("--------------------------------\n");
265
 
                        printf("Saving JSON Object file: %s\n", outputfile);
266
 
                        printf("--------------------------------\n");
267
 
 
268
 
                        // Process data to JSON
269
 
                        printf("{\n");
270
 
                        printf("\"vertexPositions\" : [");
271
 
                        for(i = 0; i < (vertcount * 3); i++) {
272
 
                                if(i < ((vertcount * 3) - 1)) {
273
 
                                        printf("%f,", localvertexlist[i]);
274
 
                                } else {
275
 
                                        printf("%f", localvertexlist[i]);
276
 
                                }
277
 
                        }
278
 
                        printf("],\n");
279
 
                        printf("\"vertexNormals\" : [");
280
 
                        if(normalcount > 0) {
281
 
                                for(i = 0; i < (vertcount * 3); i++) {
282
 
                                        if(i < ((vertcount * 3) - 1)) {
283
 
                                                printf("%f,", normallist[i]);
284
 
                                        } else {
285
 
                                                printf("%f", normallist[i]);
286
 
                                        }
287
 
                                }
288
 
                        }
289
 
                        printf("],\n");
290
 
                        printf("\"vertexTextureCoords\" : [");
291
 
                        if(texturecount > 0) {
292
 
                                for(i = 0; i < (vertcount * 2); i++){
293
 
                                        if(i < ((vertcount * 2) - 1)) {
294
 
                                                printf("%f,", uvlist[i]);
295
 
                                        } else {
296
 
                                                printf("%f", uvlist[i]);
297
 
                                        }
298
 
                                }
299
 
                        }
300
 
                        printf("],\n");
301
 
                        printf("\"indices\" : [");
302
 
 
303
 
                        // Triangle indices
304
 
                        for(i = 0; i < (trianglecount * 3); i++) {
305
 
                                if(i < ((trianglecount * 3) - 1)) {
306
 
                                        printf("%i,", localtrianglelist[i]);
307
 
                                } else {
308
 
                                        printf("%i", localtrianglelist[i]);
309
 
                                }
310
 
                        }
311
 
 
312
 
                        // Quad indices
313
 
                        for(i = 0; i < quadcount; i++) {
314
 
                                if(i == (quadcount - 1)) {
315
 
                                        printf("%i,%i,%i,%i,%i,%i,", localquadlist[i], localquadlist[i + 1], localquadlist[i + 2], localquadlist[i + 2], localquadlist[i + 3], localquadlist[i]);
316
 
                                } else {
317
 
                                        printf("%i,%i,%i,%i,%i,%i ", localquadlist[i], localquadlist[i + 1], localquadlist[i + 2], localquadlist[i + 2], localquadlist[i + 3], localquadlist[i]);
318
 
                                }
319
 
                        }
320
 
 
321
 
                        printf("]\n");
322
 
                        printf("}\n");
323
 
 
324
 
                        // Free buffers
325
 
                        free(localvertexlist);
326
 
                        free(localnormallist);
327
 
                        free(localuvlist);
328
 
                        free(localtrianglelist);
329
 
                        free(localtrianglelistuv);
330
 
                        free(localtrianglelistnormal);
331
 
                        free(localquadlist);
332
 
                        free(localquadlistuv);
333
 
                        free(localquadlistnormal);
334
 
                } else {
335
 
                        // Multigon
336
 
                        printf("Error: Object did not contain any triangles or quads!\n");
337
 
                }
338
 
 
339
 
                fclose(pFile);
340
 
                if(!foundobj) {
341
 
                        printf("Error: Failed to find object %s!\n", openobj);
342
 
                } else {
343
 
                        printf("Msg: Sucessful Parsing of Object %s in File %s\nMsg: %i vertices %i normals %i texture coordinates %i faces (%i triangles %i quads %i polys)\n", openobj, objfilename, vertcount, normalcount, texturecount, facecount, trianglecount, quadcount, polycount);
344
 
                }
345
 
 
346
 
        } else {
347
 
                printf("Error: Failed to open %s!\n", objfilename);
348
 
        }
349
 
        free(buf);
350
 
}
351
 
 
352
 
int main(int argc, char** argv) {
353
 
        if(argc < 3) {
354
 
                printf("ERROR: not enough arguments. must have LOADFILE and SAVEFILE and if you want to process only a specific object, the name of object to process\n");
355
 
                return 1;
356
 
        }
357
 
 
358
 
        printf("--------------------------------\n");
359
 
        printf("Loading Wavefront Object file: %s\n", argv[1]);
360
 
        printf("--------------------------------\n");
361
 
 
362
 
        if(argc > 3) {
363
 
                printf("Msg: Loading Object: %s\n", argv[3]);
364
 
                loadobj(argv[1], argv[3], argv[2]);
365
 
        } else {
366
 
                printf("Msg: Loading all Objects\n");
367
 
                loadobj(argv[1], "ALL", argv[2]);
368
 
        }
369
 
        return 0;
370
 
}