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root/radiance/ray/src/cv/mgf2rad.c
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Comparing ray/src/cv/mgf2rad.c (file contents):
Revision 2.8 by greg, Tue Jul 19 15:54:44 1994 UTC vs.
Revision 2.9 by greg, Thu Jul 21 15:04:23 1994 UTC

# Line 17 | Line 17 | static char SCCSid[] = "$SunId$ LBL";
17  
18   #define putv(v)         printf("%18.12g %18.12g %18.12g\n",(v)[0],(v)[1],(v)[2])
19  
20 + #define invert          (xf_context != NULL && xf_context->rev)
21 +
22   double  glowdist = FHUGE;               /* glow test distance */
23  
24   double  emult = 1.;                     /* emitter multiplier */
# Line 293 | Line 295 | char   **av;
295          printf("\n%s polygon %sf%d\n", mat, object(), ++nfaces);
296          printf("0\n0\n%d\n", 3*(ac-1));
297          for (i = 1; i < ac; i++) {
298 <                if ((cv = c_getvert(av[i])) == NULL)
298 >                if ((cv = c_getvert(av[invert ? ac-i : i])) == NULL)
299                          return(MG_EUNDEF);
300                  xf_xfmpoint(v, cv->p);
301                  putv(v);
# Line 367 | Line 369 | char   *mat, *vn1, *vn2, *vn3;
369          FVECT   n1, n2, n3;
370          register int    i;
371                          /* the following is repeat code, so assume it's OK */
370        cv1 = c_getvert(vn1);
372          cv2 = c_getvert(vn2);
373 <        cv3 = c_getvert(vn3);
373 >        if (invert) {
374 >                cv3 = c_getvert(vn1);
375 >                cv1 = c_getvert(vn3);
376 >        } else {
377 >                cv1 = c_getvert(vn1);
378 >                cv3 = c_getvert(vn3);
379 >        }
380          xf_xfmpoint(v1, cv1->p);
381          xf_xfmpoint(v2, cv2->p);
382          xf_xfmpoint(v3, cv3->p);

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