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Viewing changes to trunk/ObjConv/objtojson.c

  • Committer: Henrik G.
  • Date: 2013-03-26 23:22:55 UTC
  • Revision ID: henrik.gustavsson@his.se-20130326232255-ik6snyatlbkf3zs1
First seed of Lenasys ... Needs to be Organized Further

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trunk/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
{
 
7
        char workstr[10];
 
8
 
 
9
        int readpos=0;
 
10
 
 
11
        int i;
 
12
        for(i=0;i<3;i++){
 
13
                int pos=0;
 
14
                
 
15
                while(readpos<strlen(facedata)&&facedata[readpos]!='/'){
 
16
                        workstr[pos]=facedata[readpos];
 
17
                        pos++;
 
18
                        readpos++;
 
19
                }
 
20
                workstr[pos]=0;
 
21
 
 
22
                pos=0;
 
23
                readpos++;
 
24
                
 
25
                // -1 to compensate for wavefront file starting on 1 and not 0
 
26
                if (i==0){
 
27
                        varray[position]=atoi(workstr)-1;
 
28
                }else if((i==1)&&(hasuv>0)){
 
29
                        tarray[position]=atoi(workstr)-1;               
 
30
                }else if((i==2)&&(hasnormals>0)){
 
31
                        narray[position]=atoi(workstr)-1;
 
32
                }
 
33
        }
 
34
}
 
35
 
 
36
 
 
37
void loadobj(char *objfilename, char *openobj, char *outputfile)
 
38
{
 
39
        FILE * pFile;
 
40
        pFile = fopen (objfilename,"r");
 
41
        
 
42
        
 
43
        char *buf;
 
44
        buf=(char*)malloc(1024);
 
45
        char *result;
 
46
        
 
47
        // foundobj is true if an object with a certain name is found
 
48
        // Set foundobj to true if we are loading all objects
 
49
        int foundobj=0;
 
50
        if (strcmp(openobj,"ALL")==0) foundobj=1;
 
51
 
 
52
        int vertcount=0;        
 
53
        int normalcount=0;      
 
54
        int texturecount=0;
 
55
        int facecount=0;
 
56
 
 
57
        int polycount=0;
 
58
        int quadcount=0;
 
59
        int trianglecount=0;
 
60
 
 
61
        // Global Variables for Object
 
62
        float *vertexlist;
 
63
        float *uvlist;
 
64
        float *normallist;
 
65
        int *trianglelist;
 
66
        int *quadlist;
 
67
 
 
68
        char *resultp1,*resultp2,*resultp3,*resultp4,*resultp5;
 
69
 
 
70
        if(pFile){
 
71
                printf("Msg: Success opening: %s!\n",objfilename);
 
72
 
 
73
                while ( fgets(buf,1024,pFile) != NULL ){
 
74
                        if(buf[0]=='#'){
 
75
                                // Comment - Do Nothing                         
 
76
                        }else{
 
77
                                result=strtok(buf," \n\t");
 
78
                                if(result!=NULL){
 
79
                                        if(strcmp(result,"v")==0){
 
80
                                                if(foundobj){
 
81
                                                        // Increase vertex counter
 
82
                                                        vertcount++;                                            
 
83
                                                }
 
84
                                        }else if(strcmp(result,"vt")==0){
 
85
                                                if(foundobj){
 
86
                                                        // Increase texture coordinate counter
 
87
                                                        texturecount++;                                         
 
88
                                                }
 
89
                                                
 
90
                                        }else if(strcmp(result,"vn")==0){
 
91
                                                if(foundobj){
 
92
                                                        // Increase normal counter
 
93
                                                        normalcount++;                                          
 
94
                                                }                                               
 
95
                                        }else if(strcmp(result,"f")==0){
 
96
                                                if(foundobj){
 
97
                                                        // Increase face counter
 
98
                                                        facecount++;                                            
 
99
                                                        resultp1=strtok(NULL," \n\t");
 
100
                                                        resultp2=strtok(NULL," \n\t");
 
101
                                                        resultp3=strtok(NULL," \n\t");
 
102
                                                        resultp4=strtok(NULL," \n\t");
 
103
                                                        resultp5=strtok(NULL," \n\t");
 
104
                                                        if((resultp4!=NULL)&&(resultp5==NULL)){
 
105
                                                                quadcount++;
 
106
                                                        }else if((resultp3!=NULL)&&(resultp4==NULL)){
 
107
                                                                trianglecount++;
 
108
                                                        }else{
 
109
                                                                polycount++;
 
110
                                                        }
 
111
                                                }                                               
 
112
                                        }else if(strcmp(result,"g")==0){
 
113
                                                if(result=strtok(NULL," \n\t")){
 
114
                                                        if(!strcmp(openobj,result)){
 
115
                                                                foundobj=1;
 
116
                                                        }
 
117
                                                }else{
 
118
                                                        printf("Error: Failed to read object name\n");  
 
119
                                                }
 
120
                                        }else{
 
121
//                                              printf("O: %s \n",buf);
 
122
                                        }
 
123
                                }
 
124
                        }
 
125
                }
 
126
 
 
127
                if (polycount>0){
 
128
                        printf("Warning: Object %s in file %s contains faces that will be ignored, with more than 4 vertices.!\n",objfilename,openobj);         
 
129
                }
 
130
                
 
131
                if(((trianglecount+quadcount)>0)){
 
132
 
 
133
                        // Set foundobj to true if we are loading all objects
 
134
                        if (strcmp(openobj,"ALL")) foundobj=1;
 
135
 
 
136
                        // Seek to beginning again
 
137
                        fseek( pFile, 0, SEEK_SET);
 
138
 
 
139
                        // Allocate local buffers
 
140
                        float *localvertexlist=(float *)malloc(sizeof(float)*vertcount*3);
 
141
                        float *localnormallist=(float *)malloc(sizeof(float)*normalcount*3);
 
142
                        float *localuvlist=(float *)malloc(sizeof(float)*texturecount*2);
 
143
                        int *localquadlist=(int *)malloc(sizeof(int)*quadcount*4);
 
144
                        int *localquadlistuv=(int *)malloc(sizeof(int)*quadcount*4);
 
145
                        int *localquadlistnormal=(int *)malloc(sizeof(int)*quadcount*4);
 
146
                        int *localtrianglelist=(int *)malloc(sizeof(int)*trianglecount*3);
 
147
                        int *localtrianglelistuv=(int *)malloc(sizeof(int)*trianglecount*3);
 
148
                        int *localtrianglelistnormal=(int *)malloc(sizeof(int)*trianglecount*3);
 
149
 
 
150
                        // Reset counters for second pass
 
151
                        trianglecount=0;
 
152
                        quadcount=0;
 
153
                        normalcount=0;
 
154
                        vertcount=0;
 
155
                        texturecount=0;
 
156
 
 
157
                        while ( fgets(buf,1024,pFile) != NULL ){
 
158
 
 
159
                                if(buf[0]=='#'){
 
160
                                        // Comment - Do Nothing                         
 
161
                                }else{
 
162
 
 
163
                                        //-------------------------
 
164
                                        result = strtok(buf," \n\t");
 
165
                                        if(result!=NULL){
 
166
                                                if(strcmp(result,"v")==0){
 
167
                                                        if(foundobj){
 
168
                                                                result=strtok(NULL," \n\t");
 
169
                                                                localvertexlist[(vertcount*3)]=atof(result);
 
170
                                                                result=strtok(NULL," \n\t");
 
171
                                                                localvertexlist[(vertcount*3)+1]=atof(result);
 
172
                                                                result=strtok(NULL," \n\t");
 
173
                                                                localvertexlist[(vertcount*3)+2]=atof(result);
 
174
                                                                vertcount++;
 
175
                                                        }
 
176
                                                }else if(strcmp(result,"vt")==0){
 
177
                                                        if(foundobj){
 
178
                                                                result=strtok(NULL," \n\t");
 
179
                                                                localuvlist[(texturecount*2)]=atof(result);
 
180
                                                                result=strtok(NULL," \n\t");
 
181
                                                                localuvlist[(texturecount*2)+1]=atof(result);
 
182
                                                                texturecount++;                                         
 
183
                                                        }                                                       
 
184
                                                }else if(strcmp(result,"vn")==0){
 
185
                                                        if(foundobj){
 
186
                                                                result=strtok(NULL," \n\t");
 
187
                                                                localnormallist[(normalcount*3)]=atof(result);
 
188
                                                                result=strtok(NULL," \n\t");
 
189
                                                                localnormallist[(normalcount*3)+1]=atof(result);
 
190
                                                                result=strtok(NULL," \n\t");
 
191
                                                                localnormallist[(normalcount*3)+2]=atof(result);
 
192
                                                                normalcount++;
 
193
                                                        }                                               
 
194
 
 
195
                                                }else if(strcmp(result,"f")==0){
 
196
                                                        if(foundobj){                                                           
 
197
                                                                resultp1=strtok(NULL," \n\t");
 
198
                                                                resultp2=strtok(NULL," \n\t");
 
199
                                                                resultp3=strtok(NULL," \n\t");
 
200
                                                                resultp4=strtok(NULL," \n\t");
 
201
                                                                resultp5=strtok(NULL," \n\t");
 
202
                                                                if((resultp4!=NULL)&&(resultp5==NULL)){
 
203
                                                                        // Parse all 4 points in quad
 
204
                                                                        parseface(resultp1,localquadlist,localquadlistnormal,localquadlistuv,quadcount*4,texturecount,normalcount);
 
205
                                                                        parseface(resultp2,localquadlist,localquadlistnormal,localquadlistuv,(quadcount*4)+1,texturecount,normalcount);
 
206
                                                                        parseface(resultp3,localquadlist,localquadlistnormal,localquadlistuv,(quadcount*4)+2,texturecount,normalcount);
 
207
                                                                        parseface(resultp4,localquadlist,localquadlistnormal,localquadlistuv,(quadcount*4)+3,texturecount,normalcount);
 
208
 
 
209
                                                                        quadcount++;
 
210
 
 
211
                                                                }else if((resultp3!=NULL)&&(resultp4==NULL)){
 
212
                
 
213
                                                                        // Parse all 3 points in triangle
 
214
                                                                        parseface(resultp1,localtrianglelist,localtrianglelistnormal,localtrianglelistuv,trianglecount*3,texturecount,normalcount);
 
215
                                                                        parseface(resultp2,localtrianglelist,localtrianglelistnormal,localtrianglelistuv,(trianglecount*3)+1,texturecount,normalcount);
 
216
                                                                        parseface(resultp3,localtrianglelist,localtrianglelistnormal,localtrianglelistuv,(trianglecount*3)+2,texturecount,normalcount);
 
217
 
 
218
                                                                        trianglecount++;                                                                
 
219
                                                                }
 
220
                                                        }                                               
 
221
                                                }else if(strcmp(result,"g")==0){
 
222
                                                        if(result=strtok(NULL," \n\t")){
 
223
                                                                if(!strcmp(openobj,result)){
 
224
                                                                        foundobj=1;
 
225
                                                                }
 
226
                                                        }
 
227
                                                }
 
228
                                        }                                       
 
229
                                        //-------------------------
 
230
 
 
231
                                }
 
232
 
 
233
                        }
 
234
 
 
235
                        int i=0;
 
236
 
 
237
                        // Allocate buffers
 
238
                        vertexlist=(float *)malloc(sizeof(float)*vertcount*3);
 
239
                        normallist=(float *)malloc(sizeof(float)*vertcount*3);
 
240
                        uvlist=(float *)malloc(sizeof(float)*vertcount*2);
 
241
                        trianglelist=(int *)malloc(sizeof(int)*trianglecount*3);
 
242
                        quadlist=(int *)malloc(sizeof(int)*quadcount*4);
 
243
                
 
244
                        // Copy data from Per Face model to Per Vertex model first for triangles and then for quads
 
245
 
 
246
                        // If there are triangle normals, copy triangle normal data 
 
247
                        if(normalcount>0){
 
248
                                printf("Msg: Copying Triangle Normals: %i / %i !\n",normalcount,trianglecount);
 
249
                                for(i=0;i<trianglecount*3;i++){
 
250
                                        // Normal X
 
251
                                        normallist[localtrianglelist[i]*3]=localnormallist[localtrianglelistnormal[i]*3];
 
252
                                        // Normal Y
 
253
                                        normallist[(localtrianglelist[i]*3)+1]=localnormallist[(localtrianglelistnormal[i]*3)+1];
 
254
                                        // Normal Z
 
255
                                        normallist[(localtrianglelist[i]*3)+2]=localnormallist[(localtrianglelistnormal[i]*3)+2];
 
256
                                }
 
257
                                for(i=0;i<quadcount*4;i++){
 
258
                                        // Normal X
 
259
                                        normallist[localquadlist[i]*3]=localnormallist[localquadlistnormal[i]*3];
 
260
                                        // Normal Y
 
261
                                        normallist[(localquadlist[i]*3)+1]=localnormallist[(localquadlistnormal[i]*3)+1];
 
262
                                        // Normal Z
 
263
                                        normallist[(localquadlist[i]*3)+2]=localnormallist[(localquadlistnormal[i]*3)+2];
 
264
                                }
 
265
                        }else{
 
266
                                printf("Msg: No Triangle Normals to Copy\n");
 
267
                        }
 
268
                        
 
269
                        // If there are triangle uv coordinates, copy uv coordinate data 
 
270
                        if(texturecount>0){
 
271
                                printf("Msg: Copying Triangle UV Coordinates: %i / %i !\n",texturecount,trianglecount);
 
272
                                for(i=0;i<trianglecount*3;i++){
 
273
                                        // U Coordinate
 
274
                                        uvlist[localtrianglelist[i]*3]=localuvlist[localtrianglelistuv[i]*3];
 
275
                                        // V Coordinate
 
276
                                        uvlist[(localtrianglelist[i]*3)+1]=localuvlist[(localtrianglelistuv[i]*3)+1];
 
277
                                }
 
278
                                for(i=0;i<quadcount*4;i++){
 
279
                                        // U Coordinate
 
280
                                        uvlist[localquadlist[i]*3]=localuvlist[localquadlistuv[i]*3];
 
281
                                        // V Coordinate
 
282
                                        uvlist[(localquadlist[i]*3)+1]=localuvlist[(localquadlistuv[i]*3)+1];
 
283
                                }
 
284
                        }else{
 
285
                                printf("Msg: No Triangle UV Coordinates to Copy\n");
 
286
                        }
 
287
 
 
288
                        // Same for Quads                       
 
289
 
 
290
 
 
291
                        printf("--------------------------------\n");
 
292
                        printf("Saving JSON Object file: %s\n", outputfile);
 
293
                        printf("--------------------------------\n");
 
294
 
 
295
                        // Process data to JSON
 
296
                        printf("{\n");
 
297
 
 
298
                        printf("\"vertexPositions\" : [");
 
299
                        for(i=0;i<(vertcount*3);i++){
 
300
                                if(i<((vertcount*3)-1)) {
 
301
                                                printf("%f,",localvertexlist[i]);
 
302
                                }else{
 
303
                                                printf("%f",localvertexlist[i]);
 
304
                                }
 
305
                        }
 
306
                        printf("],\n");
 
307
 
 
308
                        printf("\"vertexNormals\" : [");
 
309
                        if(normalcount>0){
 
310
                                        for(i=0;i<(vertcount*3);i++){
 
311
                                                if(i<((vertcount*3)-1)) {
 
312
                                                                printf("%f,",normallist[i]);
 
313
                                                }else{
 
314
                                                                printf("%f",normallist[i]);
 
315
                                                }
 
316
                                        }                       
 
317
                        }
 
318
                        printf("],\n");
 
319
 
 
320
                        printf("\"vertexTextureCoords\" : [");
 
321
                        if(texturecount>0){
 
322
                                        for(i=0;i<(vertcount*2);i++){
 
323
                                                if(i<((vertcount*2)-1)) {
 
324
                                                                printf("%f,",uvlist[i]);
 
325
                                                }else{
 
326
                                                                printf("%f",uvlist[i]);
 
327
                                                }
 
328
                                        }                                               
 
329
                        }
 
330
                        printf("],\n");
 
331
 
 
332
                        printf("\"indices\" : [");
 
333
                        
 
334
                        // Triangle indices
 
335
                        for(i=0;i<(trianglecount*3);i++){
 
336
                                if(i<((trianglecount*3)-1)) {
 
337
                                                printf("%i,",localtrianglelist[i]);
 
338
                                }else{
 
339
                                                printf("%i",localtrianglelist[i]);
 
340
                                }
 
341
                        }               
 
342
 
 
343
                        // Quad indices
 
344
                        for(i=0;i<quadcount;i++){                               
 
345
                                if(i==(quadcount-1)) {
 
346
                                                printf("%i,%i,%i,%i,%i,%i,",localquadlist[i],localquadlist[i+1],localquadlist[i+2],localquadlist[i+2],localquadlist[i+3],localquadlist[i]);
 
347
                                }else{
 
348
                                                printf("%i,%i,%i,%i,%i,%i ",localquadlist[i],localquadlist[i+1],localquadlist[i+2],localquadlist[i+2],localquadlist[i+3],localquadlist[i]);
 
349
                                }
 
350
                        }               
 
351
 
 
352
                        printf("]\n");
 
353
 
 
354
                        printf("}\n");
 
355
 
 
356
                        // Free buffers
 
357
                        free(localvertexlist);
 
358
                        free(localnormallist);
 
359
                        free(localuvlist);
 
360
                        free(localtrianglelist);
 
361
                        free(localtrianglelistuv);
 
362
                        free(localtrianglelistnormal);
 
363
                        free(localquadlist);
 
364
                        free(localquadlistuv);
 
365
                        free(localquadlistnormal);
 
366
 
 
367
                }else{
 
368
                        // Multigon
 
369
                        printf("Error: Object did not contain any triangles or quads!\n");              
 
370
                }
 
371
 
 
372
                fclose ( pFile );
 
373
 
 
374
                if(!foundobj){
 
375
                        printf("Error: Failed to find object %s!\n",openobj);           
 
376
                }else{
 
377
                        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);
 
378
                }
 
379
                
 
380
        }else{
 
381
                printf("Error: Failed to open %s!\n",objfilename);      
 
382
        }
 
383
 
 
384
        free(buf);
 
385
}
 
386
 
 
387
int main (int argc, char** argv) {
 
388
 
 
389
        if (argc < 3) {
 
390
                        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");
 
391
                        return 1;
 
392
        }
 
393
 
 
394
        printf("--------------------------------\n");
 
395
        printf("Loading Wavefront Object file: %s\n", argv[1]);
 
396
        printf("--------------------------------\n");
 
397
 
 
398
        if(argc>3){
 
399
                        printf("Msg: Loading Object: %s\n", argv[3]);
 
400
                        loadobj(argv[1],argv[3],argv[2]);
 
401
        }else{
 
402
                        printf("Msg: Loading all Objects\n");   
 
403
                        loadobj(argv[1],"ALL",argv[2]);
 
404
        }
 
405
 
 
406
        return 0;
 
407
 
 
408
}
 
 
b'\\ No newline at end of file'