src/SketchPlugin/SketchPlugin_Ellipse.cpp

   1 // Copyright (C) 2017  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or
  18 // email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
  19 //
  20
  21 // File:        SketchPlugin_Ellipse.cpp
  22 // Created:     26 April 2017
  23 // Author:      Artem ZHIDKOV
  24
  25 #include <SketchPlugin_Ellipse.h>
  26 #include <SketchPlugin_Sketch.h>
  27
  28 #include <GeomAlgoAPI_EdgeBuilder.h>
  29 #include <GeomAPI_Edge.h>
  30 #include <GeomAPI_Ellipse.h>
  31 #include <GeomDataAPI_Point2D.h>
  32 #include <ModelAPI_AttributeDouble.h>
  33 #include <ModelAPI_ResultConstruction.h>
  34 #include <ModelAPI_Session.h>
  35 #include <ModelAPI_Validator.h>
  36
  37 static const double tolerance = 1e-7;
  38
  39
  40 SketchPlugin_Ellipse::SketchPlugin_Ellipse()
  41 : SketchPlugin_SketchEntity()
  42 {
  43 }
  44
  45 void SketchPlugin_Ellipse::initDerivedClassAttributes()
  46 {
  47   data()->addAttribute(CENTER_ID(), GeomDataAPI_Point2D::typeId());
  48   data()->addAttribute(FOCUS_ID(), GeomDataAPI_Point2D::typeId());
  49   data()->addAttribute(MAJOR_RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
  50   data()->addAttribute(MINOR_RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
  51
  52   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  53   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  54 }
  55
  56 void SketchPlugin_Ellipse::execute()
  57 {
  58   SketchPlugin_Sketch* aSketch = sketch();
  59   if(!aSketch) {
  60     return;
  61   }
  62
  63   // Compute a ellipse in 3D view.
  64   std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
  65       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
  66   std::shared_ptr<GeomDataAPI_Point2D> aFocusAttr =
  67       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(FOCUS_ID()));
  68   AttributeDoublePtr aMajorRadiusAttr = real(MAJOR_RADIUS_ID());
  69   AttributeDoublePtr aMinorRadiusAttr = real(MINOR_RADIUS_ID());
  70   if (!aCenterAttr->isInitialized() ||
  71       !aFocusAttr->isInitialized() ||
  72       !aMajorRadiusAttr->isInitialized() ||
  73       !aMinorRadiusAttr->isInitialized()) {
  74     return;
  75   }
  76
  77   double aMajorRadius = aMajorRadiusAttr->value();
  78   double aMinorRadius = aMinorRadiusAttr->value();
  79   if(aMajorRadius < tolerance || aMinorRadius < tolerance) {
  80     return;
  81   }
  82
  83   // Make a visible point.
  84   SketchPlugin_Sketch::createPoint2DResult(this, aSketch, CENTER_ID(), 0);
  85
  86   std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
  87       aSketch->attribute(SketchPlugin_Sketch::NORM_ID()));
  88
  89   // Make a visible ellipse.
  90   std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
  91   std::shared_ptr<GeomAPI_Pnt> aFocus(aSketch->to3D(aFocusAttr->x(), aFocusAttr->y()));
  92   std::shared_ptr<GeomAPI_Dir> aNormal = aNDir->dir();
  93   std::shared_ptr<GeomAPI_Dir> aMajorAxis(new GeomAPI_Dir(aFocus->x() - aCenter->x(),
  94       aFocus->y() - aCenter->y(), aFocus->z() - aCenter->z()));
  95
  96   std::shared_ptr<GeomAPI_Shape> anEllipseShape =
  97       GeomAlgoAPI_EdgeBuilder::ellipse(aCenter, aNormal, aMajorAxis, aMajorRadius, aMinorRadius);
  98
  99   std::shared_ptr<ModelAPI_ResultConstruction> aResult = document()->createConstruction(data(), 1);
 100   aResult->setShape(anEllipseShape);
 101   aResult->setIsInHistory(false);
 102   setResult(aResult, 1);
 103 }
 104
 105 void SketchPlugin_Ellipse::move(double theDeltaX, double theDeltaY)
 106 {
 107   std::shared_ptr<ModelAPI_Data> aData = data();
 108   if(!aData->isValid()) {
 109     return;
 110   }
 111
 112   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 113       aData->attribute(CENTER_ID()));
 114   if(aPoint->isInitialized()) {
 115     aPoint->move(theDeltaX, theDeltaY);
 116   }
 117 }
 118
 119 bool SketchPlugin_Ellipse::isFixed() {
 120   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 121 }
 122
 123 void SketchPlugin_Ellipse::attributeChanged(const std::string& theID) {
 124   // the second condition for unability to move external segments anywhere
 125   if (theID == EXTERNAL_ID() || isFixed()) {
 126     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 127     if (!aSelection) {
 128       // empty shape in selection shows that the shape is equal to context
 129       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 130       if (anExtRes)
 131         aSelection = anExtRes->shape();
 132     }
 133     // update arguments due to the selection value
 134     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 135       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 136       std::shared_ptr<GeomAPI_Ellipse> anEllipse = anEdge->ellipse();
 137
 138       std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
 139           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(CENTER_ID()));
 140       aCenterAttr->setValue(sketch()->to2D(anEllipse->center()));
 141
 142       std::shared_ptr<GeomDataAPI_Point2D> aFocusAttr =
 143           std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(FOCUS_ID()));
 144       aFocusAttr->setValue(sketch()->to2D(anEllipse->firstFocus()));
 145
 146       real(MAJOR_RADIUS_ID())->setValue(anEllipse->majorRadius());
 147       real(MINOR_RADIUS_ID())->setValue(anEllipse->minorRadius());
 148     }
 149   }
 150 }