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#ifndef lint
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static const char RCSid[] = "$Id: genbeads.c,v 2.6 2003/06/08 12:03:09 schorsch Exp $";
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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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* 10/29/85
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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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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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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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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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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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argv[0]);
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exit(1);
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}
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mtype = argv[1];
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name = argv[2];
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p0[0] = atof(argv[3]);
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p0[1] = atof(argv[4]);
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p0[2] = atof(argv[5]);
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p1[0] = atof(argv[6]);
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p1[1] = atof(argv[7]);
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p1[2] = atof(argv[8]);
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r0[0] = atof(argv[9]);
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r0[1] = atof(argv[10]);
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r0[2] = atof(argv[11]);
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r1[0] = atof(argv[12]);
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r1[1] = atof(argv[13]);
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r1[2] = atof(argv[14]);
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rad = atof(argv[15]);
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inc = atof(argv[16]);
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genstring(mtype, name, p0, p1, r0, r1, rad, inc);
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return(0);
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}
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