--- ray/src/common/otypes.h	1992/03/12 11:41:20	2.3
+++ ray/src/common/otypes.h	1995/09/15 14:55:08	2.5
@@ -86,12 +86,12 @@ extern FUN  ofun[];			/* our type list */
 #define  isvolume(t)	(ofun[t].flags & T_V)
 #define  ismodifier(t)	(!(ofun[t].flags & (T_S|T_V)))
 #define  ismaterial(t)	(ofun[t].flags & T_M)
-#define  istexture(t)	(ofun[t].flags & (T_P|T_T|T_X))
 #define  islight(t)	(ofun[t].flags & T_L)
 #define  isvlight(t)	(ofun[t].flags & T_LV)
 #define  hasdata(t)	(ofun[t].flags & (T_D|T_I))
 #define  hasfunc(t)	(ofun[t].flags & (T_F|T_D|T_I))
 #define  hastext(t)	(ofun[t].flags & T_E)
+#define  isflat(t)	((t)==OBJ_FACE || (t)==OBJ_RING)
 
 extern int  o_default();
 					/* type list initialization */