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/* Copyright (c) 1991 Regents of the University of California */ |
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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
14 |
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#include "otypes.h" |
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|
17 |
+ |
#include "func.h" |
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|
19 |
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|
20 |
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#define INITFILE "rayinit.cal" |
21 |
< |
#define DEFVNAME "FILE_LOADED`" |
21 |
> |
#define CALSUF ".cal" |
22 |
> |
#define LCALSUF 4 |
23 |
> |
char REFVNAME[] = "`FILE_REFCNT"; |
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|
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XF unitxf = { /* identity transform */ |
26 |
< |
1.0, 0.0, 0.0, 0.0, |
27 |
< |
0.0, 1.0, 0.0, 0.0, |
28 |
< |
0.0, 0.0, 1.0, 0.0, |
29 |
< |
0.0, 0.0, 0.0, 1.0, |
26 |
> |
{{1.0, 0.0, 0.0, 0.0}, |
27 |
> |
{0.0, 1.0, 0.0, 0.0}, |
28 |
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{0.0, 0.0, 1.0, 0.0}, |
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{0.0, 0.0, 0.0, 1.0}}, |
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1.0 |
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}; |
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|
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static OBJREC *fobj = NULL; /* current function object */ |
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static RAY *fray = NULL; /* current function ray */ |
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|
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+ |
static double l_erf(), l_erfc(), l_arg(); |
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|
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< |
setmap(m, r, bx) /* set channels for function call */ |
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> |
|
40 |
> |
MFUNC * |
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getfunc(m, ff, ef, dofwd) /* get function for this modifier */ |
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OBJREC *m; |
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+ |
int ff; |
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unsigned ef; |
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int dofwd; |
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{ |
47 |
+ |
extern EPNODE *curfunc; |
48 |
+ |
static char initfile[] = INITFILE; |
49 |
+ |
char sbuf[MAXSTR]; |
50 |
+ |
register char **arg; |
51 |
+ |
register MFUNC *f; |
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int ne, na; |
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register int i; |
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/* check to see if done already */ |
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if ((f = (MFUNC *)m->os) != NULL) |
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return(f); |
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fobj = NULL; fray = NULL; |
58 |
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if (initfile[0]) { /* initialize on first call */ |
59 |
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setcontext(""); |
60 |
+ |
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
61 |
+ |
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
62 |
+ |
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
63 |
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scompile("T=$10;Ts=$25;Rdot=$11;", NULL, 0); |
64 |
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scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
65 |
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scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
66 |
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scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
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scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
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funset("arg", 1, '=', l_arg); |
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funset("erf", 1, ':', l_erf); |
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funset("erfc", 1, ':', l_erfc); |
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setnoisefuncs(); |
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loadfunc(initfile); |
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initfile[0] = '\0'; |
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} |
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if ((na = m->oargs.nsargs) <= ff) |
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goto toofew; |
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arg = m->oargs.sarg; |
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if ((f = (MFUNC *)calloc(1, sizeof(MFUNC))) == NULL) |
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goto memerr; |
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i = strlen(arg[ff]); /* set up context */ |
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if (i == 1 && arg[ff][0] == '.') |
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setcontext(f->ctx = ""); /* "." means no file */ |
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else { |
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strcpy(sbuf,arg[ff]); /* file name is context */ |
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if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF)) |
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sbuf[i-LCALSUF] = '\0'; /* remove suffix */ |
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setcontext(f->ctx = savestr(sbuf)); |
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if (!vardefined(REFVNAME)) { /* file loaded? */ |
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loadfunc(arg[ff]); |
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varset(REFVNAME, '=', 1.0); |
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} else /* reference_count++ */ |
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varset(REFVNAME, '=', varvalue(REFVNAME)+1.0); |
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} |
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curfunc = NULL; /* parse expressions */ |
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sprintf(sbuf, "%s \"%s\"", ofun[m->otype].funame, m->oname); |
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for (i=0, ne=0; ef && i < na; i++, ef>>=1) |
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if (ef & 1) { /* flagged as an expression? */ |
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if (ne >= MAXEXPR) |
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objerror(m, INTERNAL, "too many expressions"); |
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initstr(arg[i], sbuf, 0); |
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f->ep[ne++] = getE1(); |
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if (nextc != EOF) |
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syntax("unexpected character"); |
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} |
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if (ef) |
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goto toofew; |
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if (i <= ff) /* find transform args */ |
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i = ff+1; |
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while (i < na && arg[i][0] != '-') |
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i++; |
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if (i == na) /* no transform */ |
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f->f = f->b = &unitxf; |
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else { /* get transform */ |
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if ((f->b = (XF *)malloc(sizeof(XF))) == NULL) |
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goto memerr; |
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if (invxf(f->b, na-i, arg+i) != na-i) |
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objerror(m, USER, "bad transform"); |
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if (f->b->sca < 0.0) |
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f->b->sca = -f->b->sca; |
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if (dofwd) { /* do both transforms */ |
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if ((f->f = (XF *)malloc(sizeof(XF))) == NULL) |
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goto memerr; |
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xf(f->f, na-i, arg+i); |
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if (f->f->sca < 0.0) |
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f->f->sca = -f->f->sca; |
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} |
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} |
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m->os = (char *)f; |
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return(f); |
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toofew: |
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objerror(m, USER, "too few string arguments"); |
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memerr: |
133 |
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error(SYSTEM, "out of memory in getfunc"); |
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} |
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|
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|
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freefunc(m) /* free memory associated with modifier */ |
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OBJREC *m; |
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{ |
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register MFUNC *f; |
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register int i; |
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|
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if ((f = (MFUNC *)m->os) == NULL) |
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return; |
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for (i = 0; f->ep[i] != NULL; i++) |
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epfree(f->ep[i]); |
147 |
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if (f->ctx[0]) { /* done with definitions */ |
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setcontext(f->ctx); |
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i = varvalue(REFVNAME)-.5; /* reference_count-- */ |
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if (i > 0) |
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varset(REFVNAME, '=', (double)i); |
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else |
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dcleanup(2); /* remove definitions */ |
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freestr(f->ctx); |
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} |
156 |
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if (f->b != &unitxf) |
157 |
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free((char *)f->b); |
158 |
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if (f->f != NULL && f->f != &unitxf) |
159 |
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free((char *)f->f); |
160 |
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free((char *)f); |
161 |
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m->os = NULL; |
162 |
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} |
163 |
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|
164 |
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|
165 |
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setfunc(m, r) /* set channels for function call */ |
166 |
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OBJREC *m; |
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register RAY *r; |
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XF *bx; |
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{ |
169 |
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extern long eclock; |
170 |
< |
static long lastrno = -1; |
171 |
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/* check to see if already set */ |
169 |
> |
static unsigned long lastrno = ~0; |
170 |
> |
register MFUNC *f; |
171 |
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/* get function */ |
172 |
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if ((f = (MFUNC *)m->os) == NULL) |
173 |
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error(m, CONSISTENCY, "setfunc called before getfunc"); |
174 |
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/* set evaluator context */ |
175 |
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setcontext(f->ctx); |
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/* check to see if matrix set */ |
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if (m == fobj && r->rno == lastrno) |
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return(0); |
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fobj = m; |
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fray = r; |
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if (r->rox != NULL) |
182 |
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if (bx != &unitxf) { |
183 |
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funcxf.sca = r->rox->b.sca * bx->sca; |
184 |
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multmat4(funcxf.xfm, r->rox->b.xfm, bx->xfm); |
182 |
> |
if (f->b != &unitxf) { |
183 |
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funcxf.sca = r->rox->b.sca * f->b->sca; |
184 |
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multmat4(funcxf.xfm, r->rox->b.xfm, f->b->xfm); |
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} else |
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copystruct(&funcxf, &r->rox->b); |
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else |
188 |
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copystruct(&funcxf, bx); |
188 |
> |
copystruct(&funcxf, f->b); |
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lastrno = r->rno; |
190 |
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eclock++; /* notify expression evaluator */ |
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return(1); |
192 |
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} |
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|
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|
60 |
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setfunc(m, r) /* simplified interface to setmap */ |
61 |
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register OBJREC *m; |
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RAY *r; |
63 |
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{ |
64 |
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register XF *mxf; |
65 |
– |
|
66 |
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if ((mxf = (XF *)m->os) == NULL) { |
67 |
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register int n; |
68 |
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register char **sa; |
69 |
– |
|
70 |
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for (n = m->oargs.nsargs, sa = m->oargs.sarg; |
71 |
– |
n > 0 && **sa != '-'; n--, sa++) |
72 |
– |
; |
73 |
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if (n == 0) |
74 |
– |
mxf = &unitxf; |
75 |
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else { |
76 |
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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 |
– |
} |
84 |
– |
m->os = (char *)mxf; |
85 |
– |
} |
86 |
– |
return(setmap(m, r, mxf)); |
87 |
– |
memerr: |
88 |
– |
error(SYSTEM, "out of memory in setfunc"); |
89 |
– |
} |
90 |
– |
|
91 |
– |
|
195 |
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loadfunc(fname) /* load definition file */ |
196 |
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char *fname; |
197 |
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{ |
206 |
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} |
207 |
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|
208 |
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|
209 |
< |
double |
209 |
> |
static double |
210 |
|
l_arg() /* return nth real argument */ |
211 |
|
{ |
212 |
|
extern double argument(); |
213 |
|
register int n; |
214 |
|
|
215 |
+ |
if (fobj == NULL) |
216 |
+ |
syntax("arg(n) used in constant expression"); |
217 |
+ |
|
218 |
|
n = argument(1) + .5; /* round to integer */ |
219 |
|
|
220 |
|
if (n < 1) |
228 |
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} |
229 |
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|
230 |
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|
231 |
< |
double |
231 |
> |
static double |
232 |
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l_erf() /* error function */ |
233 |
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{ |
234 |
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extern double erf(); |
237 |
|
} |
238 |
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|
239 |
|
|
240 |
< |
double |
240 |
> |
static double |
241 |
|
l_erfc() /* cumulative error function */ |
242 |
|
{ |
243 |
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extern double erfc(); |
246 |
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} |
247 |
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|
248 |
|
|
143 |
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funcfile(fname) /* set context, load file if necessary */ |
144 |
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register char *fname; |
145 |
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{ |
146 |
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extern char *setcontext(); |
147 |
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static char initfile[] = INITFILE; |
148 |
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|
149 |
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if (initfile[0]) { /* initialize on first call */ |
150 |
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setcontext(""); |
151 |
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scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
152 |
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scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
153 |
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scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
154 |
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scompile("T=$10;Rdot=$11;", NULL, 0); |
155 |
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scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
156 |
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scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
157 |
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scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
158 |
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scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
159 |
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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 |
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if (fname[0] == '.' && fname[1] == '\0') |
167 |
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setcontext(""); /* "." means no file */ |
168 |
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else { |
169 |
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setcontext(fname); |
170 |
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if (!vardefined(DEFVNAME)) { |
171 |
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loadfunc(fname); |
172 |
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varset(DEFVNAME, ':', 1.0); |
173 |
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} |
174 |
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} |
175 |
– |
} |
176 |
– |
|
177 |
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|
249 |
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double |
250 |
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chanvalue(n) /* return channel n to calcomp */ |
251 |
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register int n; |
253 |
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double sum; |
254 |
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register RAY *r; |
255 |
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|
256 |
+ |
if (fray == NULL) |
257 |
+ |
syntax("ray parameter used in constant expression"); |
258 |
+ |
|
259 |
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if (--n < 0) |
260 |
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goto badchan; |
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|
280 |
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fray->rop[2]*funcxf.xfm[2][n-6] + |
281 |
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funcxf.xfm[3][n-6] ); |
282 |
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|
283 |
< |
if (n == 9) { /* distance */ |
210 |
< |
|
283 |
> |
if (n == 9) { /* total distance */ |
284 |
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sum = fray->rot; |
285 |
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for (r = fray->parent; r != NULL; r = r->parent) |
286 |
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sum += r->rot; |
287 |
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return(sum * funcxf.sca); |
288 |
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|
289 |
|
} |
290 |
+ |
|
291 |
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if (n == 10) /* dot product (range [-1,1]) */ |
292 |
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return( fray->rod <= -1.0 ? -1.0 : |
293 |
|
fray->rod >= 1.0 ? 1.0 : |
307 |
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|
308 |
|
if (n < 24) /* k unit vector */ |
309 |
|
return(funcxf.xfm[2][n-21] / funcxf.sca); |
310 |
+ |
|
311 |
+ |
if (n == 24) { /* single ray (shadow) distance */ |
312 |
+ |
sum = fray->rot; |
313 |
+ |
for (r = fray->parent; r != NULL && r->crtype&SHADOW; |
314 |
+ |
r = r->parent) |
315 |
+ |
sum += r->rot; |
316 |
+ |
return(sum * funcxf.sca); |
317 |
+ |
} |
318 |
|
badchan: |
319 |
|
error(USER, "illegal channel number"); |
320 |
|
} |