src/SketchSolver/SketchSolver_ConstraintMiddle.cpp

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