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/* Copyright (c) 1990 Regents of the University of California */ |
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/* Copyright (c) 1997 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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colortrans(c2, mat, c1) /* convert c1 by mat and put into c2 */ |
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colortrans(c2, mat, c1, noneg) /* convert c1 by mat and put into c2 */ |
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register COLORMAT mat; |
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register COLOR c1, c2; |
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int noneg; |
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{ |
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static float cout[3]; |
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cout[0] = mat[0][0]*c1[0] + mat[0][1]*c1[1] + mat[0][2]*c1[2]; |
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cout[1] = mat[1][0]*c1[0] + mat[1][1]*c1[1] + mat[1][2]*c1[2]; |
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cout[2] = mat[2][0]*c1[0] + mat[2][1]*c1[1] + mat[2][2]*c1[2]; |
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if((c2[0] = cout[0]) < 0.) c2[0] = 0.; |
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if((c2[1] = cout[1]) < 0.) c2[1] = 0.; |
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if((c2[2] = cout[2]) < 0.) c2[2] = 0.; |
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if (!noneg) |
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return; |
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if ((c2[0] = cout[0]) < 0.) c2[0] = 0.; |
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if ((c2[1] = cout[1]) < 0.) c2[1] = 0.; |
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if ((c2[2] = cout[2]) < 0.) c2[2] = 0.; |
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} |
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