--- ray/src/rt/source.h	2007/07/25 05:38:24	2.17
+++ ray/src/rt/source.h	2020/04/06 21:09:07	2.21
@@ -1,4 +1,4 @@
-/* RCSid $Id: source.h,v 2.17 2007/07/25 05:38:24 greg Exp $ */
+/* RCSid $Id: source.h,v 2.21 2020/04/06 21:09:07 greg Exp $ */
 /*
  *  source.h - header file for ray tracing sources.
  *
@@ -19,6 +19,9 @@ extern "C" {
 #ifndef  SHADCACHE
 #define  SHADCACHE	20		/* shadow cache resolution */
 #endif
+#ifndef  MINSHADCNT
+#define  MINSHADCNT	4		/* test all sources if this few */
+#endif
 
 #define  SDISTANT	01		/* source distant flag */
 #define  SSKIP		02		/* source skip flag */
@@ -26,8 +29,9 @@ extern "C" {
 #define  SSPOT		010		/* source spotlight flag */
 #define  SVIRTUAL	020		/* source virtual flag */
 #define  SFLAT		040		/* source flat flag */
-#define  SCYL		0100		/* source cylindrical flag */
-#define  SFOLLOW	0200		/* source follow path flag */
+#define  SCIR		0100		/* source circular flag */
+#define  SCYL		0200		/* source cylindrical flag */
+#define  SFOLLOW	0400		/* source follow path flag */
 
 typedef struct {
 	FVECT  aim;		/* aim direction or center */
@@ -142,8 +146,8 @@ extern int  nsources;			/* the number of sources */
 #define  setsource(s,o)		(*sfun[(o)->otype].of->setsrc)(s,o)
 
 					/* defined in source.c */
-extern OBJREC   *findmaterial(OBJREC *o);
 extern void	marksources(void);
+extern void	distantsources(void);
 extern void	freesources(void);
 extern int	srcray(RAY *sr, RAY *r, SRCINDEX *si);
 extern void	srcvalue(RAY *r);