| 80 |
|
/* translate new specification */ |
| 81 |
|
if (xf(&thisxf, spec->xac, &xf_argv[spec->xav0]) != spec->xac) |
| 82 |
|
return(MG_ETYPE); |
| 83 |
+ |
/* check for vertex reversal */ |
| 84 |
+ |
if ((spec->rev = (thisxf.sca < 0.))) |
| 85 |
+ |
thisxf.sca = -thisxf.sca; |
| 86 |
|
/* compute total transformation */ |
| 87 |
|
if (spec->prev != NULL) { |
| 88 |
|
multmat4(spec->xf.xfm, thisxf.xfm, spec->prev->xf.xfm); |
| 89 |
|
spec->xf.sca = thisxf.sca * spec->prev->xf.sca; |
| 90 |
+ |
spec->rev ^= spec->prev->rev; |
| 91 |
|
} else |
| 92 |
|
spec->xf = thisxf; |
| 93 |
|
spec->xid = comp_xfid(spec->xf.xfm); /* compute unique ID */ |
