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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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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* genbeads.c - generate a string of spheres using Hermite |
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* curve specification. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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char *mtype; /* material type */ |
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void hermite3(double hp[3], double p0[3], double p1[3], |
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double r0[3], double r1[3], double t); |
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void htan3(double ht[3], double p0[3], double p1[3], |
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double r0[3], double r1[3], double t); |
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char *name; /* name */ |
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static void genstring( |
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char *mtype, |
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char *name, |
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double p0[3], |
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double p1[3], |
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double r0[3], |
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double r1[3], |
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double rad, |
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double inc |
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) |
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{ |
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register int i; |
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double v[3]; |
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double t; |
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t = 0.0; |
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for (i = 0; t <= 1.0; i++) { |
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#ifdef DCL_ATOF |
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extern double atof(); |
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#endif |
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printf("\n%s sphere %s.%d\n", mtype, name, i); |
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hermite3(v, p0, p1, r0, r1, t); |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
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v[0], v[1], v[2], rad); |
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htan3(v, p0, p1, r0, r1, t); |
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t += inc / sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]); |
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} |
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} |
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main(argc, argv) |
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int argc; |
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char **argv; |
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int main(int argc, char **argv) |
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{ |
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double p0[3], p1[3], r0[3], r1[3]; |
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double rad, inc; |
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char *mtype; /* material type */ |
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char *name; /* name */ |
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if (argc != 17) { |
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fprintf(stderr, "Usage: %s material name p0 p1 r0 r1 rad inc\n", |
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return(0); |
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} |
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genstring(mtype, name, p0, p1, r0, r1, rad, inc) |
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char *mtype; |
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char *name; |
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double p0[3]; |
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double p1[3]; |
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double r0[3]; |
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double r1[3]; |
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double rad; |
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double inc; |
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{ |
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register int i; |
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double v[3]; |
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double t; |
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t = 0.0; |
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for (i = 0; t <= 1.0; i++) { |
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printf("\n%s sphere %s.%d\n", mtype, name, i); |
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hermite3(v, p0, p1, r0, r1, t); |
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printf("0\n0\n4 %18.12g %18.12g %18.12g %18.12g\n", |
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v[0], v[1], v[2], rad); |
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htan3(v, p0, p1, r0, r1, t); |
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t += inc / sqrt(v[0]*v[0] + v[1]*v[1] + v[2]*v[2]); |
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} |
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} |
