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#ifndef lint |
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static const char RCSid[] = "$Id: genbox.c,v 2.5 2003/02/22 02:07:23 greg Exp $"; |
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#endif |
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/* |
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* genbox.c - generate a parallelepiped. |
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* |
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* 1/8/86 |
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*/ |
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|
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#include <stdio.h> |
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|
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#include <stdlib.h> |
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|
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#include <math.h> |
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|
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|
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char let[]="0123456789._ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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|
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char *cmtype; /* ppd material type */ |
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|
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char *cname; /* ppd name */ |
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|
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double size[3]; /* ppd size */ |
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|
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double bevel = 0.0; /* bevel amount */ |
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|
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int rounde = 0; /* boolean true for rounde edges */ |
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|
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int reverse = 0; /* boolean true for reversed normals */ |
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|
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|
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|
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static void |
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vertex(v) |
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register int v; |
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{ |
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register int i; |
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|
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for (i = 0; i < 3; i++) { |
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if (v & 010) |
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printf("\t%18.12g", v & 01 ? size[i]-bevel : bevel); |
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else |
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printf("\t%18.12g", v & 01 ? size[i] : 0.0); |
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v >>= 1; |
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} |
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printf("\n"); |
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} |
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|
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|
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static void |
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side(a, b, c, d) /* generate a rectangular face */ |
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int a, b, c, d; |
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{ |
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printf("\n%s polygon %s.%c%c%c%c\n", cmtype, cname, |
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let[a], let[b], let[c], let[d]); |
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printf("0\n0\n12\n"); |
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if (reverse) { |
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vertex(d); |
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vertex(c); |
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vertex(b); |
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vertex(a); |
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} else { |
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vertex(a); |
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vertex(b); |
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vertex(c); |
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vertex(d); |
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} |
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} |
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|
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|
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static void |
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corner(a, b, c) /* generate a triangular face */ |
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int a, b, c; |
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{ |
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printf("\n%s polygon %s.%c%c%c\n", cmtype, cname, |
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let[a], let[b], let[c]); |
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printf("0\n0\n9\n"); |
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if (reverse) { |
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vertex(c); |
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vertex(b); |
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vertex(a); |
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} else { |
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vertex(a); |
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vertex(b); |
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vertex(c); |
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} |
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} |
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|
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|
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static void |
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cylinder(v0, v1) /* generate a cylinder */ |
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int v0, v1; |
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{ |
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printf("\n%s cylinder %s.%c%c\n", cmtype, cname, v0+'0', v1+'0'); |
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printf("0\n0\n7\n"); |
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vertex(v0); |
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vertex(v1); |
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printf("\t%18.12g\n", bevel); |
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} |
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|
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|
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sphere(v0) /* generate a sphere */ |
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int v0; |
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{ |
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printf("\n%s sphere %s.%c\n", cmtype, cname, v0+'0'); |
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printf("0\n0\n4\n"); |
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vertex(v0); |
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printf("\t%18.12g\n", bevel); |
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} |
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|
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|
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printhead(ac, av) /* print command header */ |
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register int ac; |
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register char **av; |
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{ |
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putchar('#'); |
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while (ac--) { |
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putchar(' '); |
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fputs(*av++, stdout); |
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} |
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putchar('\n'); |
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} |
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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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{ |
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int i; |
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|
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if (argc < 6) |
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goto userr; |
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|
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cmtype = argv[1]; |
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cname = argv[2]; |
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size[0] = atof(argv[3]); |
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size[1] = atof(argv[4]); |
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size[2] = atof(argv[5]); |
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|
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for (i = 6; i < argc; i++) { |
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if (argv[i][0] != '-') |
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goto userr; |
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switch (argv[i][1]) { |
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case 'r': |
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rounde = 1; |
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/* fall through */ |
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case 'b': |
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bevel = atof(argv[++i]); |
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break; |
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case 'i': |
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reverse = 1; |
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break; |
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default: |
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goto userr; |
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} |
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} |
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|
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printhead(argc, argv); |
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|
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if (bevel > 0.0) { |
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/* minor faces */ |
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side(051, 055, 054, 050); |
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side(064, 066, 062, 060); |
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side(032, 033, 031, 030); |
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side(053, 052, 056, 057); |
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side(065, 061, 063, 067); |
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side(036, 034, 035, 037); |
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} |
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if (bevel > 0.0 && !rounde) { |
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/* bevel faces */ |
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side(031, 051, 050, 030); |
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side(060, 062, 032, 030); |
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side(050, 054, 064, 060); |
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side(034, 036, 066, 064); |
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side(037, 057, 056, 036); |
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side(052, 062, 066, 056); |
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side(052, 053, 033, 032); |
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side(057, 067, 063, 053); |
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side(061, 031, 033, 063); |
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side(065, 067, 037, 035); |
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side(055, 051, 061, 065); |
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side(034, 054, 055, 035); |
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/* bevel corners */ |
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corner(030, 050, 060); |
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corner(051, 031, 061); |
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corner(032, 062, 052); |
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corner(064, 054, 034); |
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corner(036, 056, 066); |
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corner(065, 035, 055); |
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corner(053, 063, 033); |
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corner(037, 067, 057); |
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} |
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if (bevel > 0.0 && rounde) { |
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/* rounde edges */ |
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cylinder(070, 071); |
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cylinder(070, 074); |
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cylinder(070, 072); |
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cylinder(073, 071); |
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cylinder(073, 072); |
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cylinder(073, 077); |
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cylinder(075, 071); |
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cylinder(075, 074); |
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cylinder(075, 077); |
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cylinder(076, 072); |
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cylinder(076, 074); |
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cylinder(076, 077); |
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/* rounde corners */ |
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sphere(070); |
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sphere(071); |
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sphere(072); |
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sphere(073); |
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sphere(074); |
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sphere(075); |
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sphere(076); |
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sphere(077); |
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} |
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if (bevel == 0.0 ) { |
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/* only need major faces */ |
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side(1, 5, 4, 0); |
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side(4, 6, 2, 0); |
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side(2, 3, 1, 0); |
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side(3, 2, 6, 7); |
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side(5, 1, 3, 7); |
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side(6, 4, 5, 7); |
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} |
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exit(0); |
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userr: |
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fprintf(stderr, "Usage: %s ", argv[0]); |
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fprintf(stderr, "material name xsize ysize zsize "); |
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fprintf(stderr, "[-i] [-b bevel | -r rounde]\n"); |
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exit(1); |
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} |
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|
