"Massimo Valentini" ha scritto 
: 
: I don't think a quick patch is easy, but, may be, it suffices a loop.
: 

Instead of a loop it is possible to set appropriately the range 
for intersections, so that the first is the correct. 

The following patch should fix the shadow problem, though not 
the accuracy one.

Massimo

--- obj/fpmetric.cpp 2003-06-23 22:10:24.000000000 +0200
+++ fpmetric.cpp 2003-06-23 22:11:30.000000000 +0200
@@ -222,6 +222,9 @@
  if (Depth1 == Depth2)
   Depth1 = 0;
 
+  if (Depth1 < DEPTH_TOLERANCE)
+    Depth1 = DEPTH_TOLERANCE;
+  
  if ((Depth1 += 4 * Par->accuracy) > Depth2)
   return false;

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