From fe8cab988ae59927f68da8e184cce6767e052206 Mon Sep 17 00:00:00 2001
From: nds <nds@opencascade.com>
Date: Tue, 16 May 2017 13:11:38 +0300
Subject: [PATCH] Issue #2155 Trim removes multi-rotation constraint, undo
 leads to wrong DOF

3. set coincidence to attribute(not object) of touched feature.
---
 src/SketchPlugin/SketchPlugin_Trim.cpp | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/SketchPlugin/SketchPlugin_Trim.cpp b/src/SketchPlugin/SketchPlugin_Trim.cpp
index 53a4ad23c..065444786 100644
--- a/src/SketchPlugin/SketchPlugin_Trim.cpp
+++ b/src/SketchPlugin/SketchPlugin_Trim.cpp
@@ -345,10 +345,29 @@ void SketchPlugin_Trim::execute()
       }
     }
     const std::list<ObjectPtr>& anObjects = anInfo.second;
+    std::shared_ptr<GeomAPI_Pnt2d> aPoint2D = sketch()->to2D(aPoint);
     for (std::list<ObjectPtr>::const_iterator anObjectIt = anObjects.begin();
       anObjectIt != anObjects.end(); anObjectIt++) {
-      createConstraintToObject(SketchPlugin_ConstraintCoincidence::ID(), aPointAttribute,
-                               *anObjectIt);
+      ObjectPtr anObject = *anObjectIt;
+      // find an attribute on the point feature and if it is, append it into attribute list
+      // the case when the feature just touch the source feature, not intersect
+      FeaturePtr aRefFeature = ModelAPI_Feature::feature(anObject);
+      std::list<std::shared_ptr<ModelAPI_Attribute> > anAttributes =
+                              aRefFeature->data()->attributes(GeomDataAPI_Point2D::typeId());
+      bool aFoundAttribute = false;
+      for (std::list<std::shared_ptr<ModelAPI_Attribute> >::const_iterator
+           aPntAttrIt = anAttributes.begin(); aPntAttrIt != anAttributes.end(); aPntAttrIt++) {
+        std::shared_ptr<GeomDataAPI_Point2D> anAttrPoint =
+                                 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(*aPntAttrIt);
+        if (anAttrPoint->pnt()->isEqual(aPoint2D)) {
+          createConstraint(SketchPlugin_ConstraintCoincidence::ID(), aPointAttribute, anAttrPoint);
+          aFoundAttribute = true;
+          break;
+        }
+      }
+      if (!aFoundAttribute)
+        createConstraintToObject(SketchPlugin_ConstraintCoincidence::ID(), aPointAttribute,
+                                 anObject);
     }
   }
 
-- 
2.39.2