From: azv <azv@opencascade.com>
Date: Mon, 10 Nov 2014 05:28:57 +0000 (+0300)
Subject: Issue #196: Implemented verification of zero distance in SketchSolver
X-Git-Tag: V_0.5~14
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=80b120ed40d0141c08170c5b8bbb11d6a2ededcd;p=modules%2Fshaper.git

Issue #196: Implemented verification of zero distance in SketchSolver
---

diff --git a/src/SketchSolver/SketchSolver_ConstraintGroup.cpp b/src/SketchSolver/SketchSolver_ConstraintGroup.cpp
index 7eff7e79b..d6550ed52 100644
--- a/src/SketchSolver/SketchSolver_ConstraintGroup.cpp
+++ b/src/SketchSolver/SketchSolver_ConstraintGroup.cpp
@@ -241,6 +241,10 @@ bool SketchSolver_ConstraintGroup::changeConstraint(
       theConstraint->data()->attribute(SketchPlugin_Constraint::VALUE()));
   if (aDistAttr) {
     aDistance = aDistAttr->value();
+    // Issue #196: checking the positivity of the distance constraint
+    if (aDistance < tolerance &&
+       (aConstrType == SLVS_C_PT_PT_DISTANCE || aConstrType == SLVS_C_PT_LINE_DISTANCE))
+      return false;
     // SketchPlugin circle defined by its radius, but SolveSpace uses constraint for diameter
     if (aConstrType == SLVS_C_DIAMETER)
       aDistance *= 2.0;