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/* Copyright (c) 1990 Regents of the University of California */ |
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/* Copyright (c) 1991 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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#include "otypes.h" |
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XF unitxf = { /* identity transform */ |
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1.0, 0.0, 0.0, 0.0, |
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0.0, 1.0, 0.0, 0.0, |
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0.0, 0.0, 1.0, 0.0, |
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0.0, 0.0, 0.0, 1.0, |
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1.0 |
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}; |
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|
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XF funcxf; /* current transformation */ |
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static OBJREC *fobj = NULL; /* current function object */ |
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static RAY *fray = NULL; /* current function ray */ |
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register RAY *r; |
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XF *bx; |
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{ |
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extern double l_noise3(), l_noise3a(), l_noise3b(), l_noise3c(); |
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extern double l_hermite(), l_fnoise3(), l_arg(); |
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extern double l_arg(); |
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extern long eclock; |
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static char *initfile = "rayinit.cal"; |
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static long lastrno = -1; |
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/* check to see if already set */ |
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if (m == fobj && r->rno == lastrno) |
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return; |
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/* initialize if first call */ |
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if (initfile != NULL) { |
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loadfunc(initfile); |
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scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
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scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
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scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
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funset("arg", 1, l_arg); |
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funset("noise3", 3, l_noise3); |
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funset("noise3a", 3, l_noise3a); |
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funset("noise3b", 3, l_noise3b); |
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funset("noise3c", 3, l_noise3c); |
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funset("hermite", 5, l_hermite); |
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funset("fnoise3", 3, l_fnoise3); |
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funset("arg", 1, '=', l_arg); |
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setnoisefuncs(); |
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initfile = NULL; |
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} |
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fobj = m; |
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fray = r; |
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lastrno = r->rno; |
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if (r->rox != NULL) { |
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funcxf.sca = r->rox->b.sca * bx->sca; |
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multmat4(funcxf.xfm, r->rox->b.xfm, bx->xfm); |
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} else |
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if (r->rox != NULL) |
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if (bx != &unitxf) { |
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funcxf.sca = r->rox->b.sca * bx->sca; |
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multmat4(funcxf.xfm, r->rox->b.xfm, bx->xfm); |
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} else |
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copystruct(&funcxf, &r->rox->b); |
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else |
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copystruct(&funcxf, bx); |
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eclock++; /* notify expression evaluator */ |
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} |
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for (n = m->oargs.nsargs, sa = m->oargs.sarg; |
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n > 0 && **sa != '-'; n--, sa++) |
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; |
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mxf = (XF *)malloc(sizeof(XF)); |
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if (mxf == NULL) |
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goto memerr; |
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if (invxf(mxf, n, sa) != n) |
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objerror(m, USER, "bad transform"); |
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if (mxf->sca < 0.0) |
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mxf->sca = -mxf->sca; |
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if (n == 0) |
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mxf = &unitxf; |
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else { |
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mxf = (XF *)malloc(sizeof(XF)); |
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if (mxf == NULL) |
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goto memerr; |
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if (invxf(mxf, n, sa) != n) |
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objerror(m, USER, "bad transform"); |
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if (mxf->sca < 0.0) |
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mxf->sca = -mxf->sca; |
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} |
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m->os = (char *)mxf; |
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} |
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setmap(m, r, mxf); |
