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Issue 2229: additional fix for the interactive creation of the constraint.
[modules/shaper.git] / src / SketcherPrs / SketcherPrs_LengthDimension.cpp
index d1bbd0cfd54c284882ee6cf81fd1cf484ae81ec7..6a64f6eba70228097a59fc4ca9981e825b886503 100644 (file)
@@ -1,8 +1,22 @@
-// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
-
-// File:        SketcherPrs_LengthDimension.cpp
-// Created:     27 March 2015
-// Author:      Vitaly SMETANNIKOV
+// Copyright (C) 2014-2017  CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or
+// email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+//
 
 #include "SketcherPrs_LengthDimension.h"
 #include "SketcherPrs_Tools.h"
@@ -15,8 +29,6 @@
 #include <SketchPlugin_Point.h>
 #include <SketchPlugin_Circle.h>
 
-#include <Events_Error.h>
-
 #include <GeomDataAPI_Point2D.h>
 #include <GeomAPI_Pnt.h>
 #include <GeomAPI_XYZ.h>
 #include <AIS_DisplaySpecialSymbol.hxx>
 
 
+/// Creates an aspect to be shown in length/radius dimension presentations
+/// \return an instance of aspect
+Handle(Prs3d_DimensionAspect) createDimensionAspect()
+{
+  Handle(Prs3d_DimensionAspect) anAspect = new Prs3d_DimensionAspect();
+  anAspect->MakeArrows3d(false);
+  anAspect->MakeText3d(false);
+  anAspect->MakeTextShaded(false);
+  anAspect->MakeUnitsDisplayed(false);
+  anAspect->TextAspect()->SetHeight(SketcherPrs_Tools::getDefaultTextHeight());
+  anAspect->ArrowAspect()->SetLength(SketcherPrs_Tools::getArrowSize());
+
+  return anAspect;
+}
+
+/// Update variable aspect parameters (depending on viewer scale)
+/// \param theDimAspect an aspect to be changed
+/// \param theDimValue an arrow value
+/// \param theTextSize an arrow value
+void updateArrows(Handle(Prs3d_DimensionAspect) theDimAspect,
+                  double theDimValue, double theTextSize)
+{
+  double anArrowLength = theDimAspect->ArrowAspect()->Length();
+   // This is not realy correct way to get viewer scale.
+  double aViewerScale = (double) SketcherPrs_Tools::getDefaultArrowSize() / anArrowLength;
+
+  if(theTextSize > ((theDimValue - 3 * SketcherPrs_Tools::getArrowSize()) * aViewerScale)) {
+    theDimAspect->SetTextHorizontalPosition(Prs3d_DTHP_Left);
+    theDimAspect->SetArrowOrientation(Prs3d_DAO_External);
+    theDimAspect->SetExtensionSize(
+      (theTextSize / aViewerScale + SketcherPrs_Tools::getArrowSize()) / 2.0);
+  } else {
+    theDimAspect->SetTextHorizontalPosition(Prs3d_DTHP_Center);
+    theDimAspect->SetArrowOrientation(Prs3d_DAO_Internal);
+  }
+  theDimAspect->SetArrowTailSize(theDimAspect->ArrowAspect()->Length());
+  // The value of vertical aligment is sometimes changed
+  theDimAspect->TextAspect()->SetVerticalJustification(Graphic3d_VTA_CENTER);
+}
+
+
 static const gp_Pnt MyDefStart(0,0,0);
 static const gp_Pnt MyDefEnd(1,0,0);
 static const gp_Pln MyDefPln(gp_Pnt(0,0,0), gp_Dir(0,0,1));
 
-IMPLEMENT_STANDARD_HANDLE(SketcherPrs_LengthDimension, AIS_LengthDimension);
 IMPLEMENT_STANDARD_RTTIEXT(SketcherPrs_LengthDimension, AIS_LengthDimension);
 
 SketcherPrs_LengthDimension::SketcherPrs_LengthDimension(ModelAPI_Feature* theConstraint,
-                                                         const std::shared_ptr<GeomAPI_Ax3>& thePlane)
+                                              const std::shared_ptr<GeomAPI_Ax3>& thePlane)
 : AIS_LengthDimension(MyDefStart, MyDefEnd, MyDefPln),
   myConstraint(theConstraint),
-  mySketcherPlane(thePlane)
+  mySketcherPlane(thePlane),
+  myFirstPoint(MyDefStart),
+  mySecondPoint(MyDefEnd),
+  myPlane(MyDefPln),
+  myDistance(1),
+  myValue(0., false, "")
 {
-  SetDimensionAspect(SketcherPrs_Tools::createDimensionAspect());
-  SetSelToleranceForText2d(SketcherPrs_Tools::getTextHeight());
-
+  SetDimensionAspect(createDimensionAspect());
   myStyleListener = new SketcherPrs_DimensionStyleListener();
 }
 
@@ -56,28 +111,27 @@ SketcherPrs_LengthDimension::~SketcherPrs_LengthDimension()
 bool SketcherPrs_LengthDimension::IsReadyToDisplay(ModelAPI_Feature* theConstraint,
                                          const std::shared_ptr<GeomAPI_Ax3>& thePlane)
 {
-  bool aReadyToDisplay = false;
-
   gp_Pnt aPnt1, aPnt2;
-  aReadyToDisplay = getPoints(theConstraint, thePlane, aPnt1, aPnt2);
-
-  return aReadyToDisplay;
+  return readyToDisplay(theConstraint, thePlane, aPnt1, aPnt2);
 }
 
-void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
-                                          const Handle(Prs3d_Presentation)& thePresentation, 
-                                          const Standard_Integer theMode)
+void SketcherPrs_LengthDimension::Compute(
+  const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
+  const Handle(Prs3d_Presentation)& thePresentation,
+  const Standard_Integer theMode)
 {
-  bool aReadyToDisplay = IsReadyToDisplay(myConstraint, mySketcherPlane);
+  gp_Pnt aPnt1, aPnt2;
+  bool aReadyToDisplay = readyToDisplay(myConstraint, mySketcherPlane, aPnt1, aPnt2);
   if (aReadyToDisplay) {
+    myFirstPoint = aPnt1;
+    mySecondPoint = aPnt2;
+
     myDistance = SketcherPrs_Tools::getFlyoutDistance(myConstraint);
-    getPoints(myConstraint, mySketcherPlane, myFirstPoint, mySecondPoint);
     myPlane = gp_Pln(mySketcherPlane->impl<gp_Ax3>());
 
-    AttributeDoublePtr anAttributeValue = myConstraint->data()->real(SketchPlugin_Constraint::VALUE());
-
-    myHasParameters = anAttributeValue->usedParameters().size() > 0;
-    myValue = anAttributeValue->text();
+    DataPtr aData = myConstraint->data();
+    AttributeDoublePtr anAttributeValue = aData->real(SketchPlugin_Constraint::VALUE());
+    myValue.init(anAttributeValue);
   }
 
   // compute flyout distance
@@ -87,27 +141,27 @@ void SketcherPrs_LengthDimension::Compute(const Handle(PrsMgr_PresentationManage
   // Update variable aspect parameters (depending on viewer scale)
   double aTextSize = 0.0;
   GetValueString(aTextSize);
-  SketcherPrs_Tools::updateArrows(DimensionAspect(), GetValue(), aTextSize);
+
+  updateArrows(DimensionAspect(), GetValue(), aTextSize);
 
   // Update text visualization: parameter value or parameter text
-  myStyleListener->updateDimensions(this, myHasParameters, myValue);
+  myStyleListener->updateDimensions(this, myValue);
 
   AIS_LengthDimension::Compute(thePresentationManager, thePresentation, theMode);
 
   if (!aReadyToDisplay)
     SketcherPrs_Tools::sendEmptyPresentationError(myConstraint,
                               "An empty AIS presentation: SketcherPrs_LengthDimension");
-
 }
 
-bool SketcherPrs_LengthDimension::getPoints(ModelAPI_Feature* theConstraint,
-                                            const std::shared_ptr<GeomAPI_Ax3>& thePlane,
-                                            gp_Pnt& thePnt1, gp_Pnt& thePnt2)
+bool SketcherPrs_LengthDimension::readyToDisplay(ModelAPI_Feature* theConstraint,
+                                                 const std::shared_ptr<GeomAPI_Ax3>& thePlane,
+                                                 gp_Pnt& thePnt1, gp_Pnt& thePnt2)
 {
   DataPtr aData = theConstraint->data();
   if (theConstraint->getKind() == SketchPlugin_ConstraintLength::ID()) {
     // The constraint is length
-    std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr = 
+    std::shared_ptr<ModelAPI_AttributeRefAttr> anAttr =
       std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>
       (aData->attribute(SketchPlugin_Constraint::ENTITY_A()));
     if (!anAttr)
@@ -119,10 +173,10 @@ bool SketcherPrs_LengthDimension::getPoints(ModelAPI_Feature* theConstraint,
 
     // Get geometry of the object
     DataPtr aLineData = aFeature->data();
-    std::shared_ptr<GeomDataAPI_Point2D> aStartPoint = 
+    std::shared_ptr<GeomDataAPI_Point2D> aStartPoint =
       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
       (aLineData->attribute(SketchPlugin_Line::START_ID()));
-    std::shared_ptr<GeomDataAPI_Point2D> aEndPoint = 
+    std::shared_ptr<GeomDataAPI_Point2D> aEndPoint =
       std::dynamic_pointer_cast<GeomDataAPI_Point2D>
       (aLineData->attribute(SketchPlugin_Line::END_ID()));
     thePnt1 = thePlane->to3D(aStartPoint->x(), aStartPoint->y())->impl<gp_Pnt>();