# | Line 141 | Line 141 | int n; | |
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141 | double olddot, newdot, od; | |
142 | register int i, j; | |
143 | /* get material arguments */ | |
144 | < | m = objptr(o->omod); |
144 | > | m = vsmaterial(o); |
145 | dir_check(m); | |
146 | sa = m->oargs.sarg + 4*n; | |
147 | /* initialize test ray */ |
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