| 1 |
– |
/* Copyright (c) 1995 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* Convert MGF (Materials and Geometry Format) to Metafile 2-d graphics |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
|
#include <stdio.h> |
| 9 |
+ |
#include <stdlib.h> |
| 10 |
+ |
#include <string.h> |
| 11 |
|
#include <math.h> |
| 12 |
+ |
|
| 13 |
|
#include "random.h" |
| 14 |
|
#include "mgflib/parser.h" |
| 15 |
+ |
#include "plocate.h" /* XXX shouldn't this rather be in rtmath.h? */ |
| 16 |
|
|
| 17 |
< |
#define MX(v) (int)(((1<<14)-1)*(v)[(proj_axis+1)%3]) |
| 18 |
< |
#define MY(v) (int)(((1<<14)-1)*(v)[(proj_axis+2)%3]) |
| 17 |
> |
#define MSIZE ((1<<14)-1) |
| 18 |
> |
#define MX(v) (int)(MSIZE*(v)[(proj_axis+1)%3]) |
| 19 |
> |
#define MY(v) (int)(MSIZE*(v)[(proj_axis+2)%3]) |
| 20 |
|
|
| 19 |
– |
int r_face(); |
| 21 |
|
int proj_axis; |
| 22 |
|
double limit[3][2]; |
| 23 |
|
int layer; |
| 24 |
+ |
long rthresh = 1; |
| 25 |
|
|
| 26 |
|
extern int mg_nqcdivs; |
| 27 |
|
|
| 28 |
+ |
static int r_face(int ac, char **av); |
| 29 |
+ |
static void newlayer(void); |
| 30 |
+ |
static int doline(int v1x, int v1y, int v2x, int v2y); |
| 31 |
|
|
| 32 |
< |
main(argc, argv) /* convert files to stdout */ |
| 33 |
< |
int argc; |
| 34 |
< |
char *argv[]; |
| 32 |
> |
|
| 33 |
> |
int |
| 34 |
> |
main( /* convert files to stdout */ |
| 35 |
> |
int argc, |
| 36 |
> |
char *argv[] |
| 37 |
> |
) |
| 38 |
|
{ |
| 39 |
|
int i; |
| 40 |
|
/* initialize dispatch table */ |
| 45 |
|
mg_nqcdivs = 3; /* reduce object subdivision */ |
| 46 |
|
mg_init(); /* initialize the parser */ |
| 47 |
|
/* get arguments */ |
| 48 |
+ |
if (argc > 9 && !strcmp(argv[1], "-t")) { |
| 49 |
+ |
rthresh = atof(argv[2])*MSIZE + 0.5; |
| 50 |
+ |
rthresh *= rthresh; |
| 51 |
+ |
argv += 2; |
| 52 |
+ |
argc -= 2; |
| 53 |
+ |
} |
| 54 |
|
if (argc < 8 || (proj_axis = argv[1][0]-'x') < 0 || proj_axis > 2) |
| 55 |
|
goto userr; |
| 56 |
|
limit[0][0] = atof(argv[2]); limit[0][1] = atof(argv[3]); |
| 70 |
|
mdone(); /* close output */ |
| 71 |
|
exit(0); |
| 72 |
|
userr: |
| 73 |
< |
fprintf(stderr, "Usage: %s {x|y|z} xmin xmax ymin ymax zmin zmax [file.mgf] ..\n", |
| 74 |
< |
argv[0]); |
| 73 |
> |
fputs("Usage: mgf2meta [-t thresh] {x|y|z} xmin xmax ymin ymax zmin zmax [file.mgf] ..\n", |
| 74 |
> |
stderr); |
| 75 |
|
exit(1); |
| 76 |
|
} |
| 77 |
|
|
| 78 |
|
|
| 79 |
|
int |
| 80 |
< |
r_face(ac, av) /* convert a face */ |
| 81 |
< |
int ac; |
| 82 |
< |
char **av; |
| 80 |
> |
r_face( /* convert a face */ |
| 81 |
> |
int ac, |
| 82 |
> |
char **av |
| 83 |
> |
) |
| 84 |
|
{ |
| 85 |
|
static FVECT bbmin = {0,0,0}, bbmax = {1,1,1}; |
| 86 |
|
register int i, j; |
| 117 |
|
#define hash(mx1,my1,mx2,my2) ((long)(mx1)<<15 ^ (long)(my1)<<10 ^ \ |
| 118 |
|
(long)(mx2)<<5 ^ (long)(my2)) |
| 119 |
|
|
| 105 |
– |
#define RANDMASK ((1L<<14)-1) |
| 120 |
|
|
| 121 |
< |
|
| 122 |
< |
newlayer() /* start a new layer */ |
| 121 |
> |
void |
| 122 |
> |
newlayer(void) /* start a new layer */ |
| 123 |
|
{ |
| 124 |
< |
#ifdef BSD |
| 111 |
< |
bzero((char *)hshtab, sizeof(hshtab)); |
| 112 |
< |
#else |
| 113 |
< |
(void)memset((char *)hshtab, 0, sizeof(hshtab)); |
| 114 |
< |
#endif |
| 124 |
> |
(void)memset((char *)hshtab, '\0', sizeof(hshtab)); |
| 125 |
|
if (++layer >= 16) { |
| 126 |
|
mendpage(); |
| 127 |
|
layer = 0; |
| 130 |
|
|
| 131 |
|
|
| 132 |
|
int |
| 133 |
< |
doline(v1x, v1y, v2x, v2y) /* draw line conditionally */ |
| 134 |
< |
int v1x, v1y, v2x, v2y; |
| 133 |
> |
doline( /* draw line conditionally */ |
| 134 |
> |
int v1x, |
| 135 |
> |
int v1y, |
| 136 |
> |
int v2x, |
| 137 |
> |
int v2y |
| 138 |
> |
) |
| 139 |
|
{ |
| 140 |
|
register int h; |
| 141 |
|
|
| 150 |
|
hshtab[h][0] = v1x; hshtab[h][1] = v1y; |
| 151 |
|
hshtab[h][2] = v2x; hshtab[h][3] = v2y; |
| 152 |
|
if ((long)(v2x-v1x)*(v2x-v1x) + (long)(v2y-v1y)*(v2y-v1y) |
| 153 |
< |
<= (random()&RANDMASK)) |
| 153 |
> |
<= random() % rthresh) |
| 154 |
|
return(0); |
| 155 |
|
mline(v1x, v1y, layer/4, 0, layer%4); |
| 156 |
|
mdraw(v2x, v2y); |
