From: san <san@opencascade.com>
Date: Fri, 30 Mar 2018 13:38:34 +0000 (+0300)
Subject: 0029667: Visualization, TKV3d - User-defined texture coordinates corrupted by StdPrs_... 
X-Git-Tag: V7_3_0_beta~21
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=d051064495d3485ea0b1a88d0802539f072ab5f6;p=occt.git

0029667: Visualization, TKV3d - User-defined texture coordinates corrupted by StdPrs_ShadedShape

Add protection in fillTriangles() against void UV range of a face.
---

diff --git a/src/StdPrs/StdPrs_ShadedShape.cxx b/src/StdPrs/StdPrs_ShadedShape.cxx
index e29b6950c0..e098fc47e6 100644
--- a/src/StdPrs/StdPrs_ShadedShape.cxx
+++ b/src/StdPrs/StdPrs_ShadedShape.cxx
@@ -218,8 +218,10 @@ namespace
 
         if (theHasTexels && aUVNodes.Upper() == aNodes.Upper())
         {
-          const gp_Pnt2d aTexel = gp_Pnt2d ((-theUVOrigin.X() + (theUVRepeat.X() * (aUVNodes (aNodeIter).X() - aUmin)) / dUmax) / theUVScale.X(),
-                                            (-theUVOrigin.Y() + (theUVRepeat.Y() * (aUVNodes (aNodeIter).Y() - aVmin)) / dVmax) / theUVScale.Y());
+          const gp_Pnt2d aTexel = (dUmax == 0.0 || dVmax == 0.0)
+                                ? aUVNodes (aNodeIter)
+                                : gp_Pnt2d ((-theUVOrigin.X() + (theUVRepeat.X() * (aUVNodes(aNodeIter).X() - aUmin)) / dUmax) / theUVScale.X(),
+                                            (-theUVOrigin.Y() + (theUVRepeat.Y() * (aUVNodes(aNodeIter).Y() - aVmin)) / dVmax) / theUVScale.Y());
           anArray->AddVertex (aPoint, aNorm, aTexel);
         }
         else