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/* Copyright (c) 1998 Silicon Graphics, Inc. */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ SGI"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* mx_data.c - routine for stored mixtures. |
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* |
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* 11/2/88 |
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*/ |
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#include "ray.h" |
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#include "copyright.h" |
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#include "ray.h" |
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#include "data.h" |
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#include "func.h" |
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#include "rtotypes.h" |
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/* |
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* A stored mixture is specified: |
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*/ |
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mx_data(m, r) /* interpolate mixture data */ |
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register OBJREC *m; |
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RAY *r; |
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extern int |
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mx_data( /* interpolate mixture data */ |
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register OBJREC *m, |
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RAY *r |
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) |
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{ |
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OBJECT obj; |
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double coef; |
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errno = 0; |
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for (i = 0; i < dp->nd; i++) { |
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pt[i] = evalue(mf->ep[i]); |
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if (errno) |
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if (errno == EDOM || errno == ERANGE) |
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goto computerr; |
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} |
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coef = datavalue(dp, pt); |
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errno = 0; |
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coef = funvalue(m->oargs.sarg[2], 1, &coef); |
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if (errno) |
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if (errno == EDOM || errno == ERANGE) |
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goto computerr; |
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if (raymixture(r, mod[0], mod[1], coef)) { |
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if (m->omod != OVOID) |
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} |
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mx_pdata(m, r) /* interpolate mixture picture */ |
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register OBJREC *m; |
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RAY *r; |
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extern int |
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mx_pdata( /* interpolate mixture picture */ |
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register OBJREC *m, |
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RAY *r |
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) |
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{ |
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OBJECT obj; |
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double col[3], coef; |
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errno = 0; |
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pt[1] = evalue(mf->ep[0]); /* y major ordering */ |
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pt[0] = evalue(mf->ep[1]); |
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if (errno) |
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if (errno == EDOM || errno == ERANGE) |
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goto computerr; |
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for (i = 0; i < 3; i++) /* get pixel from picture */ |
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col[i] = datavalue(dp+i, pt); |
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errno = 0; /* evaluate function on pixel */ |
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coef = funvalue(m->oargs.sarg[2], 3, col); |
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if (errno) |
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if (errno == EDOM || errno == ERANGE) |
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goto computerr; |
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if (raymixture(r, mod[0], mod[1], coef)) { |
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if (m->omod != OVOID) |