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[modules/shaper.git] / src / SketcherPrs / SketcherPrs_Rigid.cpp

diff --git a/src/SketcherPrs/SketcherPrs_Rigid.cpp b/src/SketcherPrs/SketcherPrs_Rigid.cpp
index 109d3a6871ebfed7df2f125f35850feaff856562..082ab5cfc6bfde3476b3d6461ce1a7a623069b91 100644 (file)
--- a/src/SketcherPrs/SketcherPrs_Rigid.cpp
+++ b/src/SketcherPrs/SketcherPrs_Rigid.cpp
@@ -17,7 +17,6 @@
 
 #include <SketchPlugin_Constraint.h>
 
-#include <AIS_Drawer.hxx>
 #include <gp_Pnt2d.hxx>
 
 #include <Graphic3d_AspectLine3d.hxx>
@@ -42,28 +41,49 @@ SketcherPrs_Rigid::SketcherPrs_Rigid(ModelAPI_Feature* theConstraint,
                                            const std::shared_ptr<GeomAPI_Ax3>& thePlane) 
  : SketcherPrs_SymbolPrs(theConstraint, thePlane)
 {
-  myPntArray = new Graphic3d_ArrayOfPoints(1);
-  myPntArray->AddVertex(0., 0., 0.);
-}  
+}
+
+bool SketcherPrs_Rigid::IsReadyToDisplay(ModelAPI_Feature* theConstraint,
+                                         const std::shared_ptr<GeomAPI_Ax3>& thePlane)
+{
+  bool aReadyToDisplay = false;
+
+  std::shared_ptr<ModelAPI_Data> aData = theConstraint->data();
+  std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = aData->refattr(SketchPlugin_Constraint::ENTITY_A());
+  AttributePtr aRefAttr = anAttr->attr();
+  if (anAttr->isObject()) {
+    // The constraint attached to an object
+    ObjectPtr aObj = anAttr->object();
+    aReadyToDisplay =  SketcherPrs_Tools::getShape(aObj).get() != NULL;
 
+  } else {
+    // The constraint attached to a point
+    std::shared_ptr<GeomAPI_Pnt2d> aPnt = SketcherPrs_Tools::getPoint(theConstraint,
+                                                                 SketchPlugin_Constraint::ENTITY_A());
+    aReadyToDisplay = aPnt.get() != NULL;
+  }
+  return aReadyToDisplay;
+}
 
-bool SketcherPrs_Rigid::updatePoints(double theStep) const 
+bool SketcherPrs_Rigid::updateIfReadyToDisplay(double theStep) const 
 {
+  if (!IsReadyToDisplay(myConstraint, myPlane))
+    return false;
+
   std::shared_ptr<ModelAPI_Data> aData = myConstraint->data();
   std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = aData->refattr(SketchPlugin_Constraint::ENTITY_A());
   AttributePtr aRefAttr = anAttr->attr();
   if (anAttr->isObject()) {
+    // The constraint attached to an object
     ObjectPtr aObj = anAttr->object();
-    if (SketcherPrs_Tools::getShape(aObj).get() == NULL)
-      return false;
 
     SketcherPrs_PositionMgr* aMgr = SketcherPrs_PositionMgr::get();
     gp_Pnt aP1 = aMgr->getPosition(aObj, this, theStep);
     myPntArray->SetVertice(1, aP1);
   } else {
-    std::shared_ptr<GeomAPI_Pnt2d> aPnt = SketcherPrs_Tools::getPoint(myConstraint, SketchPlugin_Constraint::ENTITY_A());
-    if (aPnt.get() == NULL)
-      return false;
+    // The constraint attached to a point
+    std::shared_ptr<GeomAPI_Pnt2d> aPnt = SketcherPrs_Tools::getPoint(myConstraint,
+                                                  SketchPlugin_Constraint::ENTITY_A());
     std::shared_ptr<GeomAPI_Pnt> aPoint = myPlane->to3D(aPnt->x(), aPnt->y() + theStep);
     myPntArray->SetVertice(1, aPoint->impl<gp_Pnt>());
   }
@@ -77,14 +97,17 @@ void SketcherPrs_Rigid::drawLines(const Handle(Prs3d_Presentation)& thePrs, Quan
   FeaturePtr aFeature = std::dynamic_pointer_cast<ModelAPI_Feature>(aObj);
   std::shared_ptr<GeomAPI_Shape> aShape;
   if (aFeature.get()) {
+    // If constraint attached to a feature
     const std::list<ResultPtr>& aResults = aFeature->results();
     std::list<ResultPtr>::const_iterator aIt;
+    // Find a shape
     for (aIt = aResults.cbegin(); aIt != aResults.cend(); aIt++) {
       aShape = (*aIt)->shape();
       if (aShape->isEdge())
         break;
     }
   } else {
+    // Else it is a result
     aShape = SketcherPrs_Tools::getShape(aObj);
   }
   if (aShape.get() == NULL)