| 1 |
< |
/* Copyright (c) 1986 Regents of the University of California */ |
| 1 |
> |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
|
|
| 3 |
|
#ifndef lint |
| 4 |
|
static char SCCSid[] = "$SunId$ LBL"; |
| 15 |
|
#include "otypes.h" |
| 16 |
|
|
| 17 |
|
|
| 18 |
< |
typedef struct { |
| 19 |
< |
double sca; /* scalefactor */ |
| 20 |
< |
double xfm[4][4]; /* transform matrix */ |
| 21 |
< |
} XF; |
| 18 |
> |
#define INITFILE "rayinit.cal" |
| 19 |
> |
#define DEFVNAME "`FILE_LOADED" |
| 20 |
|
|
| 21 |
< |
static OBJREC *fobj; /* current function object */ |
| 22 |
< |
static RAY *fray; /* current function ray */ |
| 23 |
< |
static XF fxf; /* current transformation */ |
| 21 |
> |
XF unitxf = { /* identity transform */ |
| 22 |
> |
1.0, 0.0, 0.0, 0.0, |
| 23 |
> |
0.0, 1.0, 0.0, 0.0, |
| 24 |
> |
0.0, 0.0, 1.0, 0.0, |
| 25 |
> |
0.0, 0.0, 0.0, 1.0, |
| 26 |
> |
1.0 |
| 27 |
> |
}; |
| 28 |
|
|
| 29 |
+ |
XF funcxf; /* current transformation */ |
| 30 |
+ |
static OBJREC *fobj = NULL; /* current function object */ |
| 31 |
+ |
static RAY *fray = NULL; /* current function ray */ |
| 32 |
|
|
| 33 |
< |
setmap(m, r, sca, xfm) /* set channels for function call */ |
| 33 |
> |
|
| 34 |
> |
setmap(m, r, bx) /* set channels for function call */ |
| 35 |
|
OBJREC *m; |
| 36 |
|
register RAY *r; |
| 37 |
< |
double sca; |
| 32 |
< |
double xfm[4][4]; |
| 37 |
> |
XF *bx; |
| 38 |
|
{ |
| 34 |
– |
extern double l_noise3(), l_noise3a(), l_noise3b(), l_noise3c(); |
| 35 |
– |
extern double l_hermite(), l_fnoise3(), l_arg(); |
| 39 |
|
extern long eclock; |
| 40 |
< |
static char *initfile = "rayinit.cal"; |
| 41 |
< |
|
| 42 |
< |
if (initfile != NULL) { |
| 43 |
< |
loadfunc(initfile); |
| 41 |
< |
scompile(NULL, "Dx=$1;Dy=$2;Dz=$3;"); |
| 42 |
< |
scompile(NULL, "Nx=$4;Ny=$5;Nz=$6;"); |
| 43 |
< |
scompile(NULL, "Px=$7;Py=$8;Pz=$9;"); |
| 44 |
< |
scompile(NULL, "T=$10;Rdot=$11;"); |
| 45 |
< |
funset("arg", 1, l_arg); |
| 46 |
< |
funset("noise3", 3, l_noise3); |
| 47 |
< |
funset("noise3a", 3, l_noise3a); |
| 48 |
< |
funset("noise3b", 3, l_noise3b); |
| 49 |
< |
funset("noise3c", 3, l_noise3c); |
| 50 |
< |
funset("hermite", 5, l_hermite); |
| 51 |
< |
funset("fnoise3", 3, l_fnoise3); |
| 52 |
< |
initfile = NULL; |
| 53 |
< |
} |
| 40 |
> |
static long lastrno = -1; |
| 41 |
> |
/* check to see if already set */ |
| 42 |
> |
if (m == fobj && r->rno == lastrno) |
| 43 |
> |
return(0); |
| 44 |
|
fobj = m; |
| 45 |
|
fray = r; |
| 46 |
< |
fxf.sca = r->ros * sca; |
| 47 |
< |
multmat4(fxf.xfm, r->rox, xfm); |
| 46 |
> |
if (r->rox != NULL) |
| 47 |
> |
if (bx != &unitxf) { |
| 48 |
> |
funcxf.sca = r->rox->b.sca * bx->sca; |
| 49 |
> |
multmat4(funcxf.xfm, r->rox->b.xfm, bx->xfm); |
| 50 |
> |
} else |
| 51 |
> |
copystruct(&funcxf, &r->rox->b); |
| 52 |
> |
else |
| 53 |
> |
copystruct(&funcxf, bx); |
| 54 |
> |
lastrno = r->rno; |
| 55 |
|
eclock++; /* notify expression evaluator */ |
| 56 |
+ |
return(1); |
| 57 |
|
} |
| 58 |
|
|
| 59 |
|
|
| 64 |
|
register XF *mxf; |
| 65 |
|
|
| 66 |
|
if ((mxf = (XF *)m->os) == NULL) { |
| 67 |
< |
register int n = m->oargs.nsargs; |
| 68 |
< |
register char **sa = m->oargs.sarg; |
| 67 |
> |
register int n; |
| 68 |
> |
register char **sa; |
| 69 |
|
|
| 70 |
< |
while (n > 0 && **sa != '-') { |
| 71 |
< |
n--; |
| 72 |
< |
sa++; |
| 70 |
> |
for (n = m->oargs.nsargs, sa = m->oargs.sarg; |
| 71 |
> |
n > 0 && **sa != '-'; n--, sa++) |
| 72 |
> |
; |
| 73 |
> |
if (n == 0) |
| 74 |
> |
mxf = &unitxf; |
| 75 |
> |
else { |
| 76 |
> |
mxf = (XF *)malloc(sizeof(XF)); |
| 77 |
> |
if (mxf == NULL) |
| 78 |
> |
goto memerr; |
| 79 |
> |
if (invxf(mxf, n, sa) != n) |
| 80 |
> |
objerror(m, USER, "bad transform"); |
| 81 |
> |
if (mxf->sca < 0.0) |
| 82 |
> |
mxf->sca = -mxf->sca; |
| 83 |
|
} |
| 76 |
– |
mxf = (XF *)malloc(sizeof(XF)); |
| 77 |
– |
if (mxf == NULL) |
| 78 |
– |
goto memerr; |
| 79 |
– |
mxf->sca = 1.0; |
| 80 |
– |
setident4(mxf->xfm); |
| 81 |
– |
if (invxf(mxf->xfm, &mxf->sca, n, sa) != n) |
| 82 |
– |
objerror(m, USER, "bad transform"); |
| 83 |
– |
if (mxf->sca < 0.0) |
| 84 |
– |
mxf->sca = -mxf->sca; |
| 84 |
|
m->os = (char *)mxf; |
| 85 |
|
} |
| 86 |
< |
setmap(m, r, mxf->sca, mxf->xfm); |
| 88 |
< |
return; |
| 86 |
> |
return(setmap(m, r, mxf)); |
| 87 |
|
memerr: |
| 88 |
|
error(SYSTEM, "out of memory in setfunc"); |
| 91 |
– |
#undef mxf |
| 89 |
|
} |
| 90 |
|
|
| 91 |
|
|
| 95 |
|
extern char *libpath; /* library search path */ |
| 96 |
|
char *ffname; |
| 97 |
|
|
| 98 |
< |
if ((ffname = getpath(fname, libpath)) == NULL) { |
| 98 |
> |
if ((ffname = getpath(fname, libpath, R_OK)) == NULL) { |
| 99 |
|
sprintf(errmsg, "cannot find function file \"%s\"", fname); |
| 100 |
|
error(USER, errmsg); |
| 101 |
|
} |
| 123 |
|
|
| 124 |
|
|
| 125 |
|
double |
| 126 |
+ |
l_erf() /* error function */ |
| 127 |
+ |
{ |
| 128 |
+ |
extern double erf(); |
| 129 |
+ |
|
| 130 |
+ |
return(erf(argument(1))); |
| 131 |
+ |
} |
| 132 |
+ |
|
| 133 |
+ |
|
| 134 |
+ |
double |
| 135 |
+ |
l_erfc() /* cumulative error function */ |
| 136 |
+ |
{ |
| 137 |
+ |
extern double erfc(); |
| 138 |
+ |
|
| 139 |
+ |
return(erfc(argument(1))); |
| 140 |
+ |
} |
| 141 |
+ |
|
| 142 |
+ |
|
| 143 |
+ |
funcfile(fname) /* set context, load file if necessary */ |
| 144 |
+ |
register char *fname; |
| 145 |
+ |
{ |
| 146 |
+ |
extern char *setcontext(); |
| 147 |
+ |
static char initfile[] = INITFILE; |
| 148 |
+ |
|
| 149 |
+ |
if (initfile[0]) { /* initialize on first call */ |
| 150 |
+ |
setcontext(""); |
| 151 |
+ |
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 152 |
+ |
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
| 153 |
+ |
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
| 154 |
+ |
scompile("T=$10;Rdot=$11;", NULL, 0); |
| 155 |
+ |
scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
| 156 |
+ |
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
| 157 |
+ |
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
| 158 |
+ |
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
| 159 |
+ |
funset("arg", 1, '=', l_arg); |
| 160 |
+ |
funset("erf", 1, ':', l_erf); |
| 161 |
+ |
funset("erfc", 1, ':', l_erfc); |
| 162 |
+ |
setnoisefuncs(); |
| 163 |
+ |
loadfunc(initfile); |
| 164 |
+ |
initfile[0] = '\0'; |
| 165 |
+ |
} |
| 166 |
+ |
if (fname[0] == '.' && fname[1] == '\0') |
| 167 |
+ |
setcontext(""); /* "." means no file */ |
| 168 |
+ |
else { |
| 169 |
+ |
setcontext(fname); |
| 170 |
+ |
if (!vardefined(DEFVNAME)) { |
| 171 |
+ |
loadfunc(fname); |
| 172 |
+ |
varset(DEFVNAME, ':', 1.0); |
| 173 |
+ |
} |
| 174 |
+ |
} |
| 175 |
+ |
} |
| 176 |
+ |
|
| 177 |
+ |
|
| 178 |
+ |
double |
| 179 |
|
chanvalue(n) /* return channel n to calcomp */ |
| 180 |
|
register int n; |
| 181 |
|
{ |
| 182 |
< |
double res; |
| 182 |
> |
double sum; |
| 183 |
|
register RAY *r; |
| 184 |
|
|
| 185 |
< |
n--; /* for convenience */ |
| 185 |
> |
if (--n < 0) |
| 186 |
> |
goto badchan; |
| 187 |
|
|
| 188 |
< |
if (n < 0 || n > 10) |
| 138 |
< |
error(USER, "illegal channel number"); |
| 188 |
> |
if (n < 3) /* ray direction */ |
| 189 |
|
|
| 190 |
< |
if (n == 9) { /* distance */ |
| 190 |
> |
return( ( fray->rdir[0]*funcxf.xfm[0][n] + |
| 191 |
> |
fray->rdir[1]*funcxf.xfm[1][n] + |
| 192 |
> |
fray->rdir[2]*funcxf.xfm[2][n] ) |
| 193 |
> |
/ funcxf.sca ); |
| 194 |
|
|
| 195 |
< |
res = fray->rot; |
| 143 |
< |
for (r = fray->parent; r != NULL; r = r->parent) |
| 144 |
< |
res += r->rot; |
| 145 |
< |
res *= fxf.sca; |
| 195 |
> |
if (n < 6) /* surface normal */ |
| 196 |
|
|
| 197 |
< |
} else if (n == 10) { /* dot product */ |
| 197 |
> |
return( ( fray->ron[0]*funcxf.xfm[0][n-3] + |
| 198 |
> |
fray->ron[1]*funcxf.xfm[1][n-3] + |
| 199 |
> |
fray->ron[2]*funcxf.xfm[2][n-3] ) |
| 200 |
> |
/ funcxf.sca ); |
| 201 |
|
|
| 202 |
< |
res = fray->rod; |
| 202 |
> |
if (n < 9) /* intersection */ |
| 203 |
|
|
| 204 |
< |
} else if (n < 3) { /* ray direction */ |
| 205 |
< |
res = ( fray->rdir[0]*fxf.xfm[0][n] + |
| 206 |
< |
fray->rdir[1]*fxf.xfm[1][n] + |
| 207 |
< |
fray->rdir[2]*fxf.xfm[2][n] ) |
| 208 |
< |
/ fxf.sca ; |
| 209 |
< |
} else if (n < 6) { /* surface normal */ |
| 210 |
< |
res = ( fray->ron[0]*fxf.xfm[0][n-3] + |
| 211 |
< |
fray->ron[1]*fxf.xfm[1][n-3] + |
| 212 |
< |
fray->ron[2]*fxf.xfm[2][n-3] ) |
| 213 |
< |
/ fxf.sca ; |
| 214 |
< |
} else { /* intersection */ |
| 215 |
< |
res = fray->rop[0]*fxf.xfm[0][n-6] + |
| 163 |
< |
fray->rop[1]*fxf.xfm[1][n-6] + |
| 164 |
< |
fray->rop[2]*fxf.xfm[2][n-6] + |
| 165 |
< |
fxf.xfm[3][n-6] ; |
| 204 |
> |
return( fray->rop[0]*funcxf.xfm[0][n-6] + |
| 205 |
> |
fray->rop[1]*funcxf.xfm[1][n-6] + |
| 206 |
> |
fray->rop[2]*funcxf.xfm[2][n-6] + |
| 207 |
> |
funcxf.xfm[3][n-6] ); |
| 208 |
> |
|
| 209 |
> |
if (n == 9) { /* distance */ |
| 210 |
> |
|
| 211 |
> |
sum = fray->rot; |
| 212 |
> |
for (r = fray->parent; r != NULL; r = r->parent) |
| 213 |
> |
sum += r->rot; |
| 214 |
> |
return(sum * funcxf.sca); |
| 215 |
> |
|
| 216 |
|
} |
| 217 |
+ |
if (n == 10) /* dot product (range [-1,1]) */ |
| 218 |
+ |
return( fray->rod <= -1.0 ? -1.0 : |
| 219 |
+ |
fray->rod >= 1.0 ? 1.0 : |
| 220 |
+ |
fray->rod ); |
| 221 |
|
|
| 222 |
< |
return(res); |
| 222 |
> |
if (n == 11) /* scale */ |
| 223 |
> |
return(funcxf.sca); |
| 224 |
> |
|
| 225 |
> |
if (n < 15) /* origin */ |
| 226 |
> |
return(funcxf.xfm[3][n-12]); |
| 227 |
> |
|
| 228 |
> |
if (n < 18) /* i unit vector */ |
| 229 |
> |
return(funcxf.xfm[0][n-15] / funcxf.sca); |
| 230 |
> |
|
| 231 |
> |
if (n < 21) /* j unit vector */ |
| 232 |
> |
return(funcxf.xfm[1][n-15] / funcxf.sca); |
| 233 |
> |
|
| 234 |
> |
if (n < 24) /* k unit vector */ |
| 235 |
> |
return(funcxf.xfm[2][n-21] / funcxf.sca); |
| 236 |
> |
badchan: |
| 237 |
> |
error(USER, "illegal channel number"); |
| 238 |
|
} |
