--- ray/src/common/tmesh.h	2003/03/10 19:38:19	2.1
+++ ray/src/common/tmesh.h	2003/06/26 00:58:09	2.5
@@ -1,17 +1,23 @@
-/* RCSid: $Id: tmesh.h,v 2.1 2003/03/10 19:38:19 greg Exp $ */
+/* RCSid $Id: tmesh.h,v 2.5 2003/06/26 00:58:09 schorsch Exp $ */
 /*
  * Header file for triangle mesh routines using barycentric coordinates
  */
+#ifndef _RAD_TMESH_H_
+#define _RAD_TMESH_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
 
+
 #define TCALNAME	"tmesh.cal"	/* the name of our auxiliary file */
 
 typedef struct {
 	int	ax;		/* major axis */
-	FLOAT	tm[2][3];	/* transformation */
+	RREAL	tm[2][3];	/* transformation */
 } BARYCCM;
 
 #ifndef COSTOL
-#define COSTOL		0.99985		/* cosine of tolerance for smoothing */
+#define COSTOL		0.999995	/* cosine of tolerance for smoothing */
 #endif
 
 				/* flat_tri() return values */
@@ -20,3 +26,18 @@ typedef struct {
 #define RVBENT		2		/* reversed and not flat */
 #define RVFLAT		3		/* reversed and flat */
 #define DEGEN		-1		/* degenerate (zero area) */
+
+
+int		flat_tri(FVECT v1, FVECT v2, FVECT v3,
+				FVECT n1, FVECT n2, FVECT n3);
+int		comp_baryc(BARYCCM *bcm,  FVECT v1, FVECT v2, FVECT v3);
+void		eval_baryc(RREAL wt[3], FVECT p, BARYCCM *bcm);
+int		get_baryc(RREAL wt[3], FVECT p, FVECT v1, FVECT v2, FVECT v3);
+void		put_baryc(BARYCCM *bcm, RREAL com[][3], int n);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_TMESH_H_ */
+