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Comparing ray/src/rt/func.c (file contents):
Revision 2.30 by greg, Wed May 20 13:16:20 2015 UTC vs.
Revision 2.41 by greg, Mon Sep 16 17:31:14 2024 UTC

#	Line 37 | Line 37 | static double  l_erf(char *), l_erfc(char *), l_arg(ch
37
38
39		void
40	<	initfunc()      /* initialize function evaluation */
40	>	initfunc(void)  /* initialize function evaluation */
41		{
42		if (!rayinitcal[0])     /* already done? */
43		return;
44		esupport |= E_VARIABLE|E_FUNCTION|E_INCHAN|E_RCONST|E_REDEFW;
45		esupport &= ~(E_OUTCHAN);
46	<	setcontext("");
46	>	calcontext("");
47		scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0);
48		scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0);
49		scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0);
#	Line 72 | Line 72 | set_eparams(char *prms)
72		double          value;
73		char            *cpd;
74		/* check if already set */
75	<	if ((prms == NULL) | (prms == last_params))
75	>	if (prms == NULL || !*prms)
76		return;
77	<	if (last_params != NULL && !strcmp(prms, last_params))
77	>	if (prms == last_params || (last_params != NULL &&
78	>	!strcmp(prms, last_params)))
79		return;
80	<	last_params = prms;             /* assign each variable */
80	>	last_params = prms;             /* XXX assumes static string */
81	>	/* assign each variable */
82		while (*prms) {
83		if (isspace(*prms)) {
84		++prms; continue;
#	Line 85 | Line 87 | set_eparams(char *prms)
87		goto bad_params;
88		cpd = vname;
89		while (*prms && (*prms != '=') & !isspace(*prms)) {
90	<	if (!isid(*prms))
90	>	if (!isid(*prms) | (cpd-vname >= RMAXWORD-1))
91		goto bad_params;
92		*cpd++ = *prms++;
93		}
92	–	if (cpd == vname)
93	–	goto bad_params;
94		*cpd = '\0';
95		while (isspace(*prms)) prms++;
96		if (*prms++ != '=')
#	Line 99 | Line 99 | set_eparams(char *prms)
99		if ((prms = fskip(prms)) == NULL)
100		goto bad_params;
101		while (isspace(*prms)) prms++;
102	<	prms += (*prms == ',') | (*prms == ';');
102	>	prms += (*prms == ',') | (*prms == ';') | (*prms == ':');
103		varset(vname, '=', value);
104		}
105	+	eclock++;               /* notify expression evaluator */
106		return;
107		bad_params:
108		sprintf(errmsg, "bad parameter list '%s'", last_params);
#	Line 135 | Line 136 | getfunc(       /* get function for this modifier */
136		goto memerr;
137		i = strlen(arg[ff]);                    /* set up context */
138		if (i == 1 && arg[ff][0] == '.') {
139	<	setcontext(f->ctx = "");        /* "." means no file */
139	>	calcontext(f->ctx = "");        /* "." means no file */
140		} else {
141		strcpy(sbuf,arg[ff]);           /* file name is context */
142		if (i > LCALSUF && !strcmp(sbuf+i-LCALSUF, CALSUF))
143		sbuf[i-LCALSUF] = '\0'; /* remove suffix */
144	<	setcontext(f->ctx = savestr(sbuf));
144	>	calcontext(f->ctx = savestr(sbuf));
145		if (!vardefined(REFVNAME)) {    /* file loaded? */
146		loadfunc(arg[ff]);
147		varset(REFVNAME, '=', 1.0);
148		} else                          /* reference_count++ */
149		varset(REFVNAME, '=', varvalue(REFVNAME)+1.0);
150		}
151	<	curfunc = NULL;                 /* parse expressions */
151	>	ecurfunc = NULL;                        /* parse expressions */
152		sprintf(sbuf, "%s \"%s\"", ofun[m->otype].funame, m->oname);
153		for (i=0, ne=0; ef && i < na; i++, ef>>=1)
154		if (ef & 1) {                   /* flagged as an expression? */
#	Line 156 | Line 157 | getfunc(       /* get function for this modifier */
157		initstr(arg[i], sbuf, 0);
158		f->ep[ne++] = getE1();
159		if (nextc != EOF)
160	<	syntax("unexpected character");
160	>	esyntax("unexpected character");
161		}
162		if (ef)
163		goto toofew;
#	Line 202 | Line 203 | freefunc(                      /* free memory associated with modifier */
203		if ((f = (MFUNC *)m->os) == NULL)
204		return;
205		for (i = 0; f->ep[i] != NULL; i++)
206	<	epfree(f->ep[i]);
206	>	epfree(f->ep[i],1);
207		if (f->ctx[0]) {                        /* done with definitions */
208	<	setcontext(f->ctx);
208	>	calcontext(f->ctx);
209		i = varvalue(REFVNAME)-.5;      /* reference_count-- */
210		if (i > 0)
211		varset(REFVNAME, '=', (double)i);
#	Line 233 | Line 234 | setfunc(                       /* set channels for function call */
234		if ((f = (MFUNC *)m->os) == NULL)
235		objerror(m, CONSISTENCY, "setfunc called before getfunc");
236
237	<	setcontext(f->ctx);             /* set evaluator context */
237	>	calcontext(f->ctx);             /* set evaluator context */
238		/* check to see if matrix set */
239		if ((m == fobj) & (r->rno == lastrno))
240		return(0);
#	Line 264 | Line 265 | worldfunc(                     /* special function context sans object *
265		if (rayinitcal[0])              /* initialize on first call */
266		initfunc();
267		/* set evaluator context */
268	<	setcontext(ctx);
268	>	calcontext(ctx);
269		/* check if ray already set */
270		if ((fobj == NULL) & (r->rno == lastrno))
271		return(0);
#	Line 286 | Line 287 | loadfunc(                      /* load definition file */
287
288		if ((ffname = getpath(fname, getrlibpath(), R_OK)) == NULL) {
289		sprintf(errmsg, "cannot find function file \"%s\"", fname);
290	<	error(USER, errmsg);
290	>	error(SYSTEM, errmsg);
291		}
292		fcompile(ffname);
293	+	doptimize(1);           /* optimize definitions */
294		}
295
296
#	Line 298 | Line 300 | l_arg(char *nm)                        /* return nth real argument */
300		int  n;
301
302		if (fobj == NULL)
303	<	error(USER, "arg(n) called without a context");
303	>	error(USER,
304	>	"bad call to arg(n) - illegal constant in .cal file?");
305
306		n = argument(1) + .5;           /* round to integer */
307
#	Line 333 | Line 336 | chanvalue(                     /* return channel n to calcomp */
336		)
337		{
338		if (fray == NULL)
339	<	syntax("ray parameter used in constant expression");
339	>	esyntax("ray parameter used in constant expression");
340
341		if (--n < 0)
342		goto badchan;
#	Line 353 | Line 356 | chanvalue(                     /* return channel n to calcomp */
356		/ funcxf.sca );
357
358		if (n <= 8) {                   /* intersection point */
359	<	if (fray->rot >= FHUGE)
359	>	if (fray->rot >= FHUGE*.99)
360		return(0.0);    /* XXX should be runtime error? */
361
362		return( fray->rop[0]*funcxf.xfm[0][n-6] +

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