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/* Copyright (c) 1992 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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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* p_data.c - routine for stored patterns. |
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* |
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* 6/4/86 |
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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 pattern can either be brightness or |
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*/ |
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p_bdata(m, r) /* interpolate brightness data */ |
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register OBJREC *m; |
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RAY *r; |
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extern int |
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p_bdata( /* interpolate brightness 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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double bval; |
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double pt[MAXDIM]; |
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errno = 0; |
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for (i = dp->nd; i-- > 0; ) { |
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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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bval = datavalue(dp, pt); |
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errno = 0; |
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bval = funvalue(m->oargs.sarg[0], 1, &bval); |
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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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scalecolor(r->pcol, bval); |
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return; |
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return(0); |
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computerr: |
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objerror(m, WARNING, "compute error"); |
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return; |
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return(0); |
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} |
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p_cdata(m, r) /* interpolate color data */ |
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register OBJREC *m; |
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RAY *r; |
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extern int |
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p_cdata( /* interpolate color 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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double col[3]; |
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COLOR cval; |
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errno = 0; |
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for (i = 0; i < nv; 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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col[0] = datavalue(dp, pt); |
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colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i); |
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else |
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colval(cval,i) = funvalue(m->oargs.sarg[i], 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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multcolor(r->pcol, cval); |
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return; |
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return(0); |
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computerr: |
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objerror(m, WARNING, "compute error"); |
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return; |
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return(0); |
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} |
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p_pdata(m, r) /* interpolate picture data */ |
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register OBJREC *m; |
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RAY *r; |
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extern int |
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p_pdata( /* interpolate picture 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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double col[3]; |
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COLOR cval; |
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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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dp = getpict(m->oargs.sarg[3]); |
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for (i = 0; i < 3; i++) |
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colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i); |
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else |
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colval(cval,i) = funvalue(m->oargs.sarg[i], 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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multcolor(r->pcol, cval); |
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return; |
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return(0); |
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computerr: |
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objerror(m, WARNING, "compute error"); |
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return; |
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return(0); |
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} |