src/SketchSolver/SketchSolver_ConstraintMiddle.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D
   2
   3 #include <SketchSolver_ConstraintMiddle.h>
   4
   5 #include <SketchSolver_Builder.h>
   6 #include <SketchSolver_Manager.h>
   7
   8 #include <GeomAPI_XY.h>
   9
  10 SketchSolver_ConstraintMiddle::SketchSolver_ConstraintMiddle(ConstraintPtr theConstraint)
  11   : SketchSolver_Constraint(theConstraint)
  12 {
  13 }
  14
  15 void SketchSolver_ConstraintMiddle::notifyCoincidenceChanged(
  16     EntityWrapperPtr theCoincAttr1,
  17     EntityWrapperPtr theCoincAttr2)
  18 {
  19   // Check the coincidence between point and line has been changed
  20   AttributePtr aPoint;
  21   FeaturePtr aLine;
  22   EntityWrapperPtr anEntities[2] = {theCoincAttr1, theCoincAttr2};
  23   for (int i = 0; i < 2; ++i) {
  24     if (anEntities[i]->type() == ENTITY_POINT)
  25       aPoint = anEntities[i]->baseAttribute();
  26     else if (anEntities[i]->type() == ENTITY_LINE)
  27       aLine = anEntities[i]->baseFeature();
  28   }
  29   if (!aPoint || !aLine)
  30     return;
  31
  32   // Check the attributes of middle-point constraint are the same point and line
  33   bool isSameAttr = true;
  34   for (int i = 0; i < 2 && isSameAttr; ++i) {
  35     AttributeRefAttrPtr aRefAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
  36         myBaseConstraint->attribute(SketchPlugin_Constraint::ATTRIBUTE(i)));
  37     if (!aRefAttr)
  38     {
  39       // It seems the Middle point constraint has been deleted, so keep it unchanged.
  40       // It will be removed later.
  41       return;
  42     }
  43     if (aRefAttr->isObject()) {
  44       FeaturePtr aFeature = ModelAPI_Feature::feature(aRefAttr->object());
  45       isSameAttr = (aFeature == aLine);
  46     } else
  47       isSameAttr = (aRefAttr->attr() == aPoint);
  48   }
  49
  50   if (isSameAttr) {
  51     remove();
  52     process();
  53   }
  54 }