--- ray/src/rt/source.h	1991/06/20 13:43:36	1.8
+++ ray/src/rt/source.h	1991/06/25 12:32:49	1.11
@@ -47,7 +47,7 @@ typedef struct {
  */
 
 /*
- * Virtual source materials must support the following functions:
+ * Virtual source materials must define the following.
  *
  *	vproj(pm, op, sp, i)	Compute i'th virtual projection
  *				of source sp in object op and assign
@@ -80,12 +80,20 @@ extern SRCREC  *source;			/* our source list */
 extern int  nsources;			/* the number of sources */
 
 extern double  srcray();                /* ray to source */
+extern int  srcvalue();			/* compute source value w/o shadows */
 
+extern double  intercircle();		/* intersect two circles */
+extern double  spotdisk();		/* intersecting disk for spot */
+extern double  beamdisk();		/* intersecting disk for beam */
+
 extern SPOT  *makespot();		/* make spotlight */
 
-extern SRCREC  *newsource();		/* allocate new source */
-
 extern double  dstrsrc;			/* source distribution amount */
 extern double  shadthresh;		/* relative shadow threshold */
 extern double  shadcert;		/* shadow testing certainty */
 extern int  directrelay;		/* maximum number of source relays */
+extern int  vspretest;			/* virtual source pretest density */
+
+#define  getplaneq(c,o)		(*sfun[(o)->otype].of->getpleq)(c,o)
+#define  getmaxdisk(c,o)	(*sfun[(o)->otype].of->getdisk)(c,o)
+#define  setsource(s,o)		(*sfun[(o)->otype].of->setsrc)(s,o)