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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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* The last vertex is automatically connected to the first. |
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*/ |
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#ifdef SMLFLT |
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#define VERTEPS 1e-2 /* allowed vertex error */ |
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#else |
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#define VERTEPS 1e-4 /* allowed vertex error */ |
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#endif |
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FACE * |
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getface(o) /* get arguments for a face */ |
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OBJREC *o; |
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{ |
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double fabs(); |
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double d1; |
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int badvert; |
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FVECT v1, v2, v3; |
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f->va = o->oargs.farg; |
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f->nv = o->oargs.nfargs / 3; |
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/* check for last==first */ |
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if (dist2(VERTEX(f,0),VERTEX(f,f->nv-1)) <= FTINY*FTINY) |
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f->nv--; |
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/* compute area and normal */ |
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f->norm[0] = f->norm[1] = f->norm[2] = 0.0; |
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v1[0] = v1[1] = v1[2] = 0.0; |
