--- ray/src/rt/source.c	1998/08/10 18:37:56	2.28
+++ ray/src/rt/source.c	2003/06/24 15:37:01	2.34
@@ -1,19 +1,16 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ SGI";
+static const char RCSid[] = "$Id: source.c,v 2.34 2003/06/24 15:37:01 greg Exp $";
 #endif
-
 /*
  *  source.c - routines dealing with illumination sources.
  *
- *     8/20/85
+ *  External symbols declared in source.h
  */
 
+#include "copyright.h"
+
 #include  "ray.h"
 
-#include  "octree.h"
-
 #include  "otypes.h"
 
 #include  "source.h"
@@ -47,6 +44,7 @@ static CNTPTR  *cntord;			/* source ordering in direct
 static int  maxcntr = 0;		/* size of contribution arrays */
 
 
+void
 marksources()			/* find and mark source objects */
 {
 	int  foundsource = 0;
@@ -56,7 +54,7 @@ marksources()			/* find and mark source objects */
 					/* initialize dispatch table */
 	initstypes();
 					/* find direct sources */
-	for (i = 0; i < nobjects; i++) {
+	for (i = 0; i < nsceneobjs; i++) {
 	
 		o = objptr(i);
 
@@ -125,6 +123,25 @@ memerr:
 }
 
 
+void
+freesources()			/* free all source structures */
+{
+	if (nsources > 0) {
+		free((void *)source);
+		source = NULL;
+		nsources = 0;
+	}
+	if (maxcntr <= 0)
+		return;
+	free((void *)srccnt);
+	srccnt = NULL;
+	free((void *)cntord);
+	cntord = NULL;
+	maxcntr = 0;
+}
+
+
+int
 srcray(sr, r, si)		/* send a ray to a source, return domega */
 register RAY  *sr;		/* returned source ray */
 RAY  *r;			/* ray which hit object */
@@ -162,6 +179,7 @@ SRCINDEX  *si;			/* source sample index */
 }
 
 
+void
 srcvalue(r)			/* punch ray to source and compute value */
 register RAY  *r;
 {
@@ -202,6 +220,7 @@ nomat:
 }
 
 
+int
 sourcehit(r)			/* check to see if ray hit distant source */
 register RAY  *r;
 {
@@ -231,6 +250,8 @@ register RAY  *r;
 		for (i = 0; i < 3; i++)
 			r->ron[i] = -r->rdir[i];
 		r->rod = 1.0;
+		r->pert[0] = r->pert[1] = r->pert[2] = 0.0;
+		r->uv[0] = r->uv[1] = 0.0;
 		r->rox = NULL;
 		return(1);
 	}
@@ -250,12 +271,13 @@ register CNTPTR  *sc1, *sc2;
 }
 
 
+void
 direct(r, f, p)				/* add direct component */
 RAY  *r;			/* ray that hit surface */
-int  (*f)();			/* direct component coefficient function */
+void  (*f)();			/* direct component coefficient function */
 char  *p;			/* data for f */
 {
-	extern int  (*trace)();
+	extern void  (*trace)();
 	register int  sn;
 	register CONTRIB  *scp;
 	SRCINDEX  si;
@@ -271,9 +293,9 @@ char  *p;			/* data for f */
 	for (sn = 0; srcray(&sr, r, &si); sn++) {
 		if (sn >= maxcntr) {
 			maxcntr = sn + MAXSPART;
-			srccnt = (CONTRIB *)realloc((char *)srccnt,
+			srccnt = (CONTRIB *)realloc((void *)srccnt,
 					maxcntr*sizeof(CONTRIB));
-			cntord = (CNTPTR *)realloc((char *)cntord,
+			cntord = (CNTPTR *)realloc((void *)cntord,
 					maxcntr*sizeof(CNTPTR));
 			if (srccnt == NULL | cntord == NULL)
 				error(SYSTEM, "out of memory in direct");
@@ -333,7 +355,11 @@ char  *p;			/* data for f */
 		rayorigin(&sr, r, SHADOW, 1.0);
 		VCOPY(sr.rdir, scp->dir);
 		sr.rsrc = scp->sno;
-		source[scp->sno].ntests++;	/* keep statistics */
+						/* keep statistics */
+		if (source[scp->sno].ntests++ > 0xfffffff0) {
+			source[scp->sno].ntests >>= 1;
+			source[scp->sno].nhits >>= 1;
+		}
 		if (localhit(&sr, &thescene) &&
 				( sr.ro != source[scp->sno].so ||
 				source[scp->sno].sflags & SFOLLOW )) {
@@ -375,6 +401,7 @@ char  *p;			/* data for f */
 }
 
 
+void
 srcscatter(r)			/* compute source scattering into ray */
 register RAY  *r;
 {
@@ -526,6 +553,7 @@ return(o->otype==MAT_ILLUM|o->otype==MAT_GLOW);}
 				distglow(m, r, raydist(r,PRIMARY)))
 
 
+int
 m_light(m, r)			/* ray hit a light source */
 register OBJREC  *m;
 register RAY  *r;