183 lines
6.7 KiB
C
183 lines
6.7 KiB
C
/******************************************************************************
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Plush Version 1.2
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read_cob.c
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ASCII COB Object Reader
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Copyright (c) 1996-2000, Justin Frankel
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******************************************************************************/
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#include "plush.h"
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#define PL_COB_MAX_LINELENGTH 1024
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pl_Obj *plReadCOBObj(char *fn, pl_Mat *mat) {
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FILE *fp = fopen(fn,"rt");
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long int p1,m1,p2,m2,p3,m3;
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char temp_string[PL_COB_MAX_LINELENGTH];
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float TransMatrix[4][4];
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pl_Obj *obj;
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pl_sInt32 x,i2;
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long int numVertices, numMappingVertices, numFaces, i;
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pl_sInt32 *MappingVertices = 0;
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if (!fp) return 0;
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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if (memcmp("Caligari",temp_string,8)) { fclose(fp); return 0; }
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("Transform",temp_string,9));
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if (feof(fp)) { fclose(fp); return 0; }
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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sscanf(temp_string,"%f %f %f %f",
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&TransMatrix[0][0],&TransMatrix[0][1],&TransMatrix[0][2],&TransMatrix[0][3]);
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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sscanf(temp_string,"%f %f %f %f",
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&TransMatrix[1][0],&TransMatrix[1][1],&TransMatrix[1][2],&TransMatrix[1][3]);
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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sscanf(temp_string,"%f %f %f %f",
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&TransMatrix[2][0],&TransMatrix[2][1],&TransMatrix[2][2],&TransMatrix[2][3]);
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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sscanf(temp_string,"%f %f %f %f",
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&TransMatrix[3][0],&TransMatrix[3][1],&TransMatrix[3][2],&TransMatrix[3][3]);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("World Vertices",temp_string,12));
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if (feof(fp) || sscanf(temp_string,"World Vertices %ld",&numVertices) != 1)
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{ fclose(fp); return 0; }
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rewind(fp);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("Texture Vertices",temp_string,16));
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if (feof(fp) ||
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sscanf(temp_string,"Texture Vertices %ld",&numMappingVertices) != 1) {
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fclose(fp); return 0;
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}
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rewind(fp);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("Faces",temp_string,5));
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if (feof(fp) || sscanf(temp_string,"Faces %ld",&numFaces) != 1) {
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fclose(fp); return 0;
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}
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for (x = numFaces; x; x--) {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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if (feof(fp) || sscanf(temp_string+4," verts %ld",&i) != 1 || i < 3) {
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fclose(fp);
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return 0;
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}
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numFaces += i-3;
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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}
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obj = plObjCreate(numVertices,numFaces);
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if (!obj) { fclose(fp); return 0; }
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rewind(fp);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("World Vertices",temp_string,12));
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if (feof(fp)) { plObjDelete(obj); fclose(fp); return 0; }
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for (x = 0; x < numVertices; x ++) {
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float xp, yp, zp;
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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if (feof(fp) ||
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sscanf(temp_string,"%f %f %f", &xp, &yp, &zp) != 3) {
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plObjDelete(obj); fclose(fp); return 0;
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}
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obj->Vertices[x].x = (TransMatrix[0][0]*xp+TransMatrix[0][1]*yp+
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TransMatrix[0][2]*zp+TransMatrix[0][3]);
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obj->Vertices[x].y = (TransMatrix[1][0]*xp+TransMatrix[1][1]*yp+
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TransMatrix[1][2]*zp+TransMatrix[1][3]);
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obj->Vertices[x].z = (TransMatrix[2][0]*xp+TransMatrix[2][1]*yp+
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TransMatrix[2][2]*zp+TransMatrix[2][3]);
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}
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rewind(fp);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("Texture Vertices",temp_string,16));
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if (!feof(fp)) {
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MappingVertices = (pl_sInt32 *)
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malloc(sizeof(pl_sInt32) * numMappingVertices * 2);
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if (MappingVertices) {
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for (x = 0; x < numMappingVertices; x ++) {
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float p1, p2;
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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if (feof(fp) || sscanf(temp_string,"%f %f", &p1, &p2) != 2) {
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free(MappingVertices); plObjDelete(obj); fclose(fp); return 0;
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}
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MappingVertices[x*2] = (pl_sInt32) (p1*65536.0);
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MappingVertices[x*2+1] = (pl_sInt32) (p2*65536.0);
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}
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}
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}
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rewind(fp);
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do {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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} while (!feof(fp) && memcmp("Faces",temp_string,5));
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if (feof(fp)) {
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if (MappingVertices) free(MappingVertices);
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plObjDelete(obj); fclose(fp); return 0;
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}
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for (x = 0; x < numFaces; x ++) {
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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sscanf(temp_string+4," verts %ld",&i);
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fgets(temp_string,PL_COB_MAX_LINELENGTH,fp);
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if (i == 3) {
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if (feof(fp) || sscanf(temp_string,"<%ld,%ld> <%ld,%ld> <%ld,%ld>",
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&p3,&m3,&p2,&m2,&p1,&m1) != 6) {
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if (MappingVertices) free(MappingVertices);
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plObjDelete(obj); fclose(fp); return 0;
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}
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obj->Faces[x].Vertices[0] = obj->Vertices + p1;
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obj->Faces[x].Vertices[1] = obj->Vertices + p2;
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obj->Faces[x].Vertices[2] = obj->Vertices + p3;
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if (MappingVertices) {
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obj->Faces[x].MappingU[0] = MappingVertices[m1*2];
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obj->Faces[x].MappingV[0] = MappingVertices[m1*2+1];
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obj->Faces[x].MappingU[1] = MappingVertices[m2*2];
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obj->Faces[x].MappingV[1] = MappingVertices[m2*2+1];
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obj->Faces[x].MappingU[2] = MappingVertices[m3*2];
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obj->Faces[x].MappingV[2] = MappingVertices[m3*2+1];
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}
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obj->Faces[x].Material = mat;
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} else {
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long int p[16],m[16];
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if (feof(fp)) {
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if (MappingVertices) free(MappingVertices);
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plObjDelete(obj); fclose(fp); return 0;
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}
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sscanf(temp_string,
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"<%ld,%ld> <%ld,%ld> <%ld,%ld> <%ld,%ld> "
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"<%ld,%ld> <%ld,%ld> <%ld,%ld> <%ld,%ld> "
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"<%ld,%ld> <%ld,%ld> <%ld,%ld> <%ld,%ld> "
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"<%ld,%ld> <%ld,%ld> <%ld,%ld> <%ld,%ld> ",
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p+0,m+0,p+1,m+1,p+2,m+2,p+3,m+3,
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p+4,m+4,p+5,m+5,p+6,m+6,p+7,m+7,
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p+8,m+8,p+9,m+9,p+10,m+10,p+11,m+11,
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p+12,m+12,p+13,m+13,p+14,m+14,p+15,m+15);
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for (i2 = 1; i2 < (i-1); i2 ++) {
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obj->Faces[x].Vertices[0] = obj->Vertices + p[0];
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obj->Faces[x].Vertices[1] = obj->Vertices + p[i2+1];
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obj->Faces[x].Vertices[2] = obj->Vertices + p[i2];
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if (MappingVertices) {
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obj->Faces[x].MappingU[0] = MappingVertices[m[0]*2];
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obj->Faces[x].MappingV[0] = MappingVertices[m[0]*2+1];
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obj->Faces[x].MappingU[1] = MappingVertices[m[i2+1]*2];
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obj->Faces[x].MappingV[1] = MappingVertices[m[i2+1]*2+1];
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obj->Faces[x].MappingU[2] = MappingVertices[m[i2]*2];
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obj->Faces[x].MappingV[2] = MappingVertices[m[i2]*2+1];
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}
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obj->Faces[x].Material = mat;
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x++;
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}
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x--;
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}
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}
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obj->BackfaceCull = 1;
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if (MappingVertices) free(MappingVertices);
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plObjCalcNormals(obj);
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fclose(fp);
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return obj;
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}
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