Revision: 41296
http://brlcad.svn.sourceforge.net/brlcad/?rev=41296&view=rev
Author: indianlarry
Date: 2010-11-09 11:11:38 +0000 (Tue, 09 Nov 2010)
Log Message:
-----------
Fixed under sized arrays used in reporting intersects in four corner solver.
This under size was causing stack corruption issues when a subdivision surface
was hit more than twice. Added definition MAX_BREP_SUBDIVISION_INTERSECTS and
currently set to 5, four corners and center are currently being tested for
possible intersects. The fact that we are getting more than two intersects
means that we need to check our near flat criteria for the subdivision but
arrays still need to be dimensioned to max possible intersects.
Modified Paths:
--------------
brlcad/trunk/src/librt/primitives/brep/brep.cpp
Modified: brlcad/trunk/src/librt/primitives/brep/brep.cpp
===================================================================
--- brlcad/trunk/src/librt/primitives/brep/brep.cpp 2010-11-09 11:02:26 UTC
(rev 41295)
+++ brlcad/trunk/src/librt/primitives/brep/brep.cpp 2010-11-09 11:11:38 UTC
(rev 41296)
@@ -1121,13 +1121,13 @@
return false;
}
-
+#define MAX_BREP_SUBDIVISION_INTERSECTS 5
int
-utah_brep_intersect_test(const BBNode* sbv, const ON_BrepFace* face, const
ON_Surface* surf, pt2d_t uv, ON_Ray& ray, HitList& hits)
+utah_brep_intersect_test(const BBNode* sbv, const ON_BrepFace* face, const
ON_Surface* surf, pt2d_t& uv, ON_Ray& ray, HitList& hits)
{
- ON_3dVector N[2];
- double t[2];
- ON_2dPoint ouv[2];
+ ON_3dVector N[MAX_BREP_SUBDIVISION_INTERSECTS];
+ double t[MAX_BREP_SUBDIVISION_INTERSECTS];
+ ON_2dPoint ouv[MAX_BREP_SUBDIVISION_INTERSECTS];
int found = BREP_INTERSECT_ROOT_DIVERGED;
bool converged = false;
int numhits;
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