| 14 |
|
|
| 15 |
|
#include "otypes.h" |
| 16 |
|
|
| 17 |
+ |
#include "func.h" |
| 18 |
|
|
| 19 |
+ |
|
| 20 |
+ |
#define INITFILE "rayinit.cal" |
| 21 |
+ |
#define REFVNAME "`FILE_REFCNT" |
| 22 |
+ |
#define CALSUF ".cal" |
| 23 |
+ |
#define LCALSUF 4 |
| 24 |
+ |
|
| 25 |
|
XF unitxf = { /* identity transform */ |
| 26 |
|
1.0, 0.0, 0.0, 0.0, |
| 27 |
|
0.0, 1.0, 0.0, 0.0, |
| 34 |
|
static OBJREC *fobj = NULL; /* current function object */ |
| 35 |
|
static RAY *fray = NULL; /* current function ray */ |
| 36 |
|
|
| 37 |
+ |
static double l_erf(), l_erfc(), l_arg(); |
| 38 |
|
|
| 39 |
< |
setmap(m, r, bx) /* set channels for function call */ |
| 39 |
> |
|
| 40 |
> |
MFUNC * |
| 41 |
> |
getfunc(m, ff, ef, dofwd) /* get function for this modifier */ |
| 42 |
|
OBJREC *m; |
| 43 |
< |
register RAY *r; |
| 44 |
< |
XF *bx; |
| 43 |
> |
int ff; |
| 44 |
> |
unsigned ef; |
| 45 |
> |
int dofwd; |
| 46 |
|
{ |
| 47 |
< |
extern double l_noise3(), l_noise3a(), l_noise3b(), l_noise3c(); |
| 48 |
< |
extern double l_hermite(), l_fnoise3(), l_arg(); |
| 49 |
< |
extern long eclock; |
| 50 |
< |
static char *initfile = "rayinit.cal"; |
| 51 |
< |
/* initialize if first call */ |
| 52 |
< |
if (initfile != NULL) { |
| 53 |
< |
loadfunc(initfile); |
| 47 |
> |
extern EPNODE *curfunc; |
| 48 |
> |
static char initfile[] = INITFILE; |
| 49 |
> |
char sbuf[MAXSTR]; |
| 50 |
> |
register char **arg; |
| 51 |
> |
register MFUNC *f; |
| 52 |
> |
int ne, na; |
| 53 |
> |
register int i; |
| 54 |
> |
/* check to see if done already */ |
| 55 |
> |
if ((f = (MFUNC *)m->os) != NULL) |
| 56 |
> |
return(f); |
| 57 |
> |
if (initfile[0]) { /* initialize on first call */ |
| 58 |
> |
setcontext(""); |
| 59 |
|
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
| 60 |
|
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
| 61 |
|
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
| 65 |
|
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
| 66 |
|
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
| 67 |
|
funset("arg", 1, '=', l_arg); |
| 68 |
< |
funset("noise3", 3, ':', l_noise3); |
| 69 |
< |
funset("noise3a", 3, ':', l_noise3a); |
| 70 |
< |
funset("noise3b", 3, ':', l_noise3b); |
| 71 |
< |
funset("noise3c", 3, ':', l_noise3c); |
| 72 |
< |
funset("hermite", 5, ':', l_hermite); |
| 57 |
< |
funset("fnoise3", 3, ':', l_fnoise3); |
| 58 |
< |
initfile = NULL; |
| 68 |
> |
funset("erf", 1, ':', l_erf); |
| 69 |
> |
funset("erfc", 1, ':', l_erfc); |
| 70 |
> |
setnoisefuncs(); |
| 71 |
> |
loadfunc(initfile); |
| 72 |
> |
initfile[0] = '\0'; |
| 73 |
|
} |
| 74 |
+ |
if ((na = m->oargs.nsargs) <= ff) |
| 75 |
+ |
goto toofew; |
| 76 |
+ |
arg = m->oargs.sarg; |
| 77 |
+ |
if ((f = (MFUNC *)calloc(1, sizeof(MFUNC))) == NULL) |
| 78 |
+ |
goto memerr; |
| 79 |
+ |
i = strlen(arg[ff]); /* set up context */ |
| 80 |
+ |
if (i == 1 && arg[ff][0] == '.') |
| 81 |
+ |
setcontext(f->ctx = ""); /* "." means no file */ |
| 82 |
+ |
else { |
| 83 |
+ |
strcpy(sbuf,m->oargs.sarg[ff]); /* file name is context */ |
| 84 |
+ |
if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF)) |
| 85 |
+ |
sbuf[i-LCALSUF] = '\0'; /* remove suffix */ |
| 86 |
+ |
setcontext(f->ctx = savestr(sbuf)); |
| 87 |
+ |
if (!vardefined(REFVNAME)) { /* file loaded? */ |
| 88 |
+ |
loadfunc(m->oargs.sarg[ff]); |
| 89 |
+ |
varset(REFVNAME, '=', 1.0); |
| 90 |
+ |
} else /* reference_count++ */ |
| 91 |
+ |
varset(REFVNAME, '=', varvalue(REFVNAME)+1.0); |
| 92 |
+ |
} |
| 93 |
+ |
curfunc = NULL; /* parse expressions */ |
| 94 |
+ |
sprintf(sbuf, "%s \"%s\"", ofun[m->otype].funame, m->oname); |
| 95 |
+ |
for (i=0, ne=0; ef && i < na; i++, ef>>=1) |
| 96 |
+ |
if (ef & 1) { /* flagged as an expression? */ |
| 97 |
+ |
if (ne >= MAXEXPR) |
| 98 |
+ |
objerror(m, INTERNAL, "too many expressions"); |
| 99 |
+ |
initstr(arg[i], sbuf, 0); |
| 100 |
+ |
f->ep[ne++] = getE1(); |
| 101 |
+ |
if (nextc != EOF) |
| 102 |
+ |
syntax("unexpected character"); |
| 103 |
+ |
} |
| 104 |
+ |
if (ef) |
| 105 |
+ |
goto toofew; |
| 106 |
+ |
if (i <= ff) /* find transform args */ |
| 107 |
+ |
i = ff+1; |
| 108 |
+ |
while (i < na && arg[i][0] != '-') |
| 109 |
+ |
i++; |
| 110 |
+ |
if (i == na) /* no transform */ |
| 111 |
+ |
f->f = f->b = &unitxf; |
| 112 |
+ |
else { /* get transform */ |
| 113 |
+ |
if ((f->b = (XF *)malloc(sizeof(XF))) == NULL) |
| 114 |
+ |
goto memerr;; |
| 115 |
+ |
if (invxf(f->b, na-i, arg+i) != na-i) |
| 116 |
+ |
objerror(m, USER, "bad transform"); |
| 117 |
+ |
if (f->b->sca < 0.0) |
| 118 |
+ |
f->b->sca = -f->b->sca; |
| 119 |
+ |
if (dofwd) { /* do both transforms */ |
| 120 |
+ |
if ((f->f = (XF *)malloc(sizeof(XF))) == NULL) |
| 121 |
+ |
goto memerr;; |
| 122 |
+ |
xf(f->f, na-i, arg+i); |
| 123 |
+ |
if (f->f->sca < 0.0) |
| 124 |
+ |
f->f->sca = -f->f->sca; |
| 125 |
+ |
} |
| 126 |
+ |
} |
| 127 |
+ |
m->os = (char *)f; |
| 128 |
+ |
return(f); |
| 129 |
+ |
toofew: |
| 130 |
+ |
objerror(m, USER, "too few arguments"); |
| 131 |
+ |
memerr: |
| 132 |
+ |
error(SYSTEM, "out of memory in getfunc"); |
| 133 |
+ |
} |
| 134 |
+ |
|
| 135 |
+ |
|
| 136 |
+ |
freefunc(m) /* free memory associated with modifier */ |
| 137 |
+ |
OBJREC *m; |
| 138 |
+ |
{ |
| 139 |
+ |
register MFUNC *f; |
| 140 |
+ |
register int i; |
| 141 |
+ |
|
| 142 |
+ |
if ((f = (MFUNC *)m->os) == NULL) |
| 143 |
+ |
return; |
| 144 |
+ |
for (i = 0; f->ep[i] != NULL; i++) |
| 145 |
+ |
epfree(f->ep[i]); |
| 146 |
+ |
if (f->ctx[0]) { /* done with definitions */ |
| 147 |
+ |
setcontext(f->ctx); |
| 148 |
+ |
i = varvalue(REFVNAME)-.5; /* reference_count-- */ |
| 149 |
+ |
if (i > 0) |
| 150 |
+ |
varset(REFVNAME, '=', (double)i); |
| 151 |
+ |
else |
| 152 |
+ |
dcleanup(2); /* remove definitions */ |
| 153 |
+ |
freestr(f->ctx); |
| 154 |
+ |
} |
| 155 |
+ |
if (f->b != &unitxf) |
| 156 |
+ |
free((char *)f->b); |
| 157 |
+ |
if (f->f != NULL && f->f != &unitxf) |
| 158 |
+ |
free((char *)f->f); |
| 159 |
+ |
free((char *)f); |
| 160 |
+ |
m->os = NULL; |
| 161 |
+ |
} |
| 162 |
+ |
|
| 163 |
+ |
|
| 164 |
+ |
setfunc(m, r) /* set channels for function call */ |
| 165 |
+ |
OBJREC *m; |
| 166 |
+ |
register RAY *r; |
| 167 |
+ |
{ |
| 168 |
+ |
static long lastrno = -1; |
| 169 |
+ |
register MFUNC *f; |
| 170 |
+ |
/* get function */ |
| 171 |
+ |
if ((f = (MFUNC *)m->os) == NULL) |
| 172 |
+ |
error(m, CONSISTENCY, "setfunc called before getfunc"); |
| 173 |
+ |
/* set evaluator context */ |
| 174 |
+ |
setcontext(f->ctx); |
| 175 |
+ |
/* check to see if matrix set */ |
| 176 |
+ |
if (m == fobj && r->rno == lastrno) |
| 177 |
+ |
return(0); |
| 178 |
|
fobj = m; |
| 179 |
|
fray = r; |
| 180 |
|
if (r->rox != NULL) |
| 181 |
< |
if (bx != &unitxf) { |
| 182 |
< |
funcxf.sca = r->rox->b.sca * bx->sca; |
| 183 |
< |
multmat4(funcxf.xfm, r->rox->b.xfm, bx->xfm); |
| 181 |
> |
if (f->b != &unitxf) { |
| 182 |
> |
funcxf.sca = r->rox->b.sca * f->b->sca; |
| 183 |
> |
multmat4(funcxf.xfm, r->rox->b.xfm, f->b->xfm); |
| 184 |
|
} else |
| 185 |
|
copystruct(&funcxf, &r->rox->b); |
| 186 |
|
else |
| 187 |
< |
copystruct(&funcxf, bx); |
| 187 |
> |
copystruct(&funcxf, f->b); |
| 188 |
> |
lastrno = r->rno; |
| 189 |
|
eclock++; /* notify expression evaluator */ |
| 190 |
+ |
return(1); |
| 191 |
|
} |
| 192 |
|
|
| 193 |
|
|
| 74 |
– |
setfunc(m, r) /* simplified interface to setmap */ |
| 75 |
– |
register OBJREC *m; |
| 76 |
– |
RAY *r; |
| 77 |
– |
{ |
| 78 |
– |
register XF *mxf; |
| 79 |
– |
|
| 80 |
– |
if ((mxf = (XF *)m->os) == NULL) { |
| 81 |
– |
register int n; |
| 82 |
– |
register char **sa; |
| 83 |
– |
|
| 84 |
– |
for (n = m->oargs.nsargs, sa = m->oargs.sarg; |
| 85 |
– |
n > 0 && **sa != '-'; n--, sa++) |
| 86 |
– |
; |
| 87 |
– |
if (n == 0) |
| 88 |
– |
mxf = &unitxf; |
| 89 |
– |
else { |
| 90 |
– |
mxf = (XF *)malloc(sizeof(XF)); |
| 91 |
– |
if (mxf == NULL) |
| 92 |
– |
goto memerr; |
| 93 |
– |
if (invxf(mxf, n, sa) != n) |
| 94 |
– |
objerror(m, USER, "bad transform"); |
| 95 |
– |
if (mxf->sca < 0.0) |
| 96 |
– |
mxf->sca = -mxf->sca; |
| 97 |
– |
} |
| 98 |
– |
m->os = (char *)mxf; |
| 99 |
– |
} |
| 100 |
– |
setmap(m, r, mxf); |
| 101 |
– |
return; |
| 102 |
– |
memerr: |
| 103 |
– |
error(SYSTEM, "out of memory in setfunc"); |
| 104 |
– |
} |
| 105 |
– |
|
| 106 |
– |
|
| 194 |
|
loadfunc(fname) /* load definition file */ |
| 195 |
|
char *fname; |
| 196 |
|
{ |
| 205 |
|
} |
| 206 |
|
|
| 207 |
|
|
| 208 |
< |
double |
| 208 |
> |
static double |
| 209 |
|
l_arg() /* return nth real argument */ |
| 210 |
|
{ |
| 211 |
|
extern double argument(); |
| 224 |
|
} |
| 225 |
|
|
| 226 |
|
|
| 227 |
+ |
static double |
| 228 |
+ |
l_erf() /* error function */ |
| 229 |
+ |
{ |
| 230 |
+ |
extern double erf(); |
| 231 |
+ |
|
| 232 |
+ |
return(erf(argument(1))); |
| 233 |
+ |
} |
| 234 |
+ |
|
| 235 |
+ |
|
| 236 |
+ |
static double |
| 237 |
+ |
l_erfc() /* cumulative error function */ |
| 238 |
+ |
{ |
| 239 |
+ |
extern double erfc(); |
| 240 |
+ |
|
| 241 |
+ |
return(erfc(argument(1))); |
| 242 |
+ |
} |
| 243 |
+ |
|
| 244 |
+ |
|
| 245 |
|
double |
| 246 |
|
chanvalue(n) /* return channel n to calcomp */ |
| 247 |
|
register int n; |
| 281 |
|
return(sum * funcxf.sca); |
| 282 |
|
|
| 283 |
|
} |
| 284 |
< |
if (n == 10) /* dot product */ |
| 285 |
< |
return(fray->rod); |
| 284 |
> |
if (n == 10) /* dot product (range [-1,1]) */ |
| 285 |
> |
return( fray->rod <= -1.0 ? -1.0 : |
| 286 |
> |
fray->rod >= 1.0 ? 1.0 : |
| 287 |
> |
fray->rod ); |
| 288 |
|
|
| 289 |
|
if (n == 11) /* scale */ |
| 290 |
|
return(funcxf.sca); |
