[ViewVC] Diff of: radiance/ray/src/cv/tmesh.c

Comparing ray/src/cv/tmesh.c (file contents):
Revision 2.1 by greg, Wed Jun 22 12:35:23 1994 UTC vs.
Revision 2.2 by greg, Wed Jul 24 13:07:47 1996 UTC

+int
-+
+flat_tri(v1, v2, v3, n1, n2, n3)        /* determine if triangle is flat */
-+
+FVECT   v1, v2, v3, n1, n2, n3;
-+
+{
-+
+        double  d1, d2, d3;
-+
+        FVECT   vt1, vt2, vn;
-+
+                                        /* compute default normal */
-+
+        vt1[0] = v2[0] - v1[0]; vt1[1] = v2[1] - v1[1]; vt1[2] = v2[2] - v1[2];
-+
+        vt2[0] = v3[0] - v2[0]; vt2[1] = v3[1] - v2[1]; vt2[2] = v3[2] - v2[2];
-+
+        fcross(vn, vt1, vt2);
-+
+        if (normalize(vn) == 0.0)
-+
+                return(DEGEN);
-+
+                                        /* compare to supplied normals */
-+
+        d1 = DOT(vn, n1); d2 = DOT(vn, n2); d3 = DOT(vn, n3);
-+
+        if (d1 < 0 && d2 < 0 && d3 < 0) {
-+
+                if (d1 > -COSTOL || d2 > -COSTOL || d3 > -COSTOL)
-+
+                        return(RVBENT);
-+
+                return(RVFLAT);
-+
+        }
-+
+        if (d1 < COSTOL || d2 < COSTOL || d3 < COSTOL)
-+
+                return(ISBENT);
-+
+        return(ISFLAT);
-+
+}
-+
-+
-+
+int
+comp_baryc(bcm, v1, v2, v3)             /* compute barycentric vectors */
+register BARYCCM        *bcm;
+FLOAT   *v1, *v2, *v3;

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