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greg |
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/* Copyright (c) 1986 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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#endif |
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/* |
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* plocate.c - routine to locate 3D vector w.r.t. box. |
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* |
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* 8/28/85 |
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*/ |
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#include "plocate.h" |
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int |
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plocate(p, min, max) /* return location of p w.r.t. min & max */ |
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register double p[3]; |
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double min[3], max[3]; |
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{ |
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register int loc = 0; |
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if (p[0] < min[0] - EPSILON) |
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loc |= XPOS & BELOW; |
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else if (p[0] > max[0] + EPSILON) |
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loc |= XPOS & ABOVE; |
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if (p[1] < min[1] - EPSILON) |
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loc |= YPOS & BELOW; |
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else if (p[1] > max[1] + EPSILON) |
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loc |= YPOS & ABOVE; |
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if (p[2] < min[2] - EPSILON) |
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loc |= ZPOS & BELOW; |
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else if (p[2] > max[2] + EPSILON) |
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loc |= ZPOS & ABOVE; |
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return(loc); |
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} |
