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/* Copyright (c) 1992 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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/* |
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* text.c - functions for text patterns and mixtures. |
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* |
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* 11/12/86 |
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*/ |
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#include "ray.h" |
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* [spacing] |
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* |
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* Colortext is identical, except colors are given rather than |
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* brightnesses. Mixtext has foreground and background modifiers: |
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* brightnesses. |
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* |
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* Mixtext has foreground and background modifiers: |
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* |
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* modifier mixtext id |
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* 4+ foremod backmod fontfile text.. |
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* 0 |
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TLINE *tlalloc(); |
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text(m, r) |
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do_text(m, r) |
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register OBJREC *m; |
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RAY *r; |
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{ |
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objerror(m, USER, "inappropriate modifier"); |
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return(1); |
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} |
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} |
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if (m->otype == PAT_BTEXT) { |
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} else if (m->otype == PAT_BTEXT) { |
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if (foreground) |
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scalecolor(r->pcol, m->oargs.farg[9]); |
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else |
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/* compute vectors */ |
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fcross(DxR, D, R); |
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fcross(t->right, DxR, D); |
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d = DOT(D,D)/DOT(t->right,t->right); |
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d = DOT(t->right,t->right); |
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if (d <= FTINY*FTINY) |
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objerror(tm, USER, "illegal motion vector"); |
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d = DOT(D,D)/d; |
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for (i = 0; i < 3; i++) |
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t->right[i] *= d; |
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fcross(t->down, R, DxR); |