Revision: 73154
http://sourceforge.net/p/brlcad/code/73154
Author: starseeker
Date: 2019-05-23 13:26:55 +0000 (Thu, 23 May 2019)
Log Message:
-----------
Explain why we're calling ShrinkSurfaces
Modified Paths:
--------------
brlcad/trunk/src/libbrep/cdt.cpp
Modified: brlcad/trunk/src/libbrep/cdt.cpp
===================================================================
--- brlcad/trunk/src/libbrep/cdt.cpp 2019-05-23 13:23:09 UTC (rev 73153)
+++ brlcad/trunk/src/libbrep/cdt.cpp 2019-05-23 13:26:55 UTC (rev 73154)
@@ -360,8 +360,6 @@
}
ON_Brep* brep = s_cdt->brep;
- brep->ShrinkSurfaces();
-
// Check for any conditions that are show-stoppers
ON_wString wonstr;
ON_TextLog vout(wonstr);
@@ -379,6 +377,13 @@
}
}
+ // Have observed at least one case where a small face on a large surface
+ // resulted in a valid 2D triangulation that produced a self-intersecting
+ // 3D mesh. Attempt to minimize situations where 2D and 3D distances get
+ // out of sync by shrinking the surfaces down to the active area
+ brep->ShrinkSurfaces();
+
+
// Reparameterize the face's surface and transform the "u" and "v"
// coordinates of all the face's parameter space trimming curves to
// minimize distortion in the map from parameter space to 3d..
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