src/SketchPlugin/SketchPlugin_Circle.cpp

   1 // Copyright (C) 2014-2017  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 #include "SketchPlugin_Circle.h"
  22 #include "SketchPlugin_Sketch.h"
  23 #include <ModelAPI_Data.h>
  24 #include <ModelAPI_ResultConstruction.h>
  25 #include <ModelAPI_AttributeSelection.h>
  26 #include <ModelAPI_Validator.h>
  27 #include <ModelAPI_AttributeDouble.h>
  28 #include <ModelAPI_AttributeString.h>
  29 #include <ModelAPI_Session.h>
  30
  31 #include <GeomAPI_Pnt2d.h>
  32 #include <GeomAPI_Circ.h>
  33 #include <GeomAPI_Circ2d.h>
  34 #include <GeomAPI_Vertex.h>
  35 #include <GeomAPI_XY.h>
  36 #include <GeomDataAPI_Point2D.h>
  37 #include <GeomDataAPI_Dir.h>
  38 #include <GeomAlgoAPI_PointBuilder.h>
  39 #include <GeomAlgoAPI_EdgeBuilder.h>
  40 #include <GeomAlgoAPI_CompoundBuilder.h>
  41
  42 #include <cmath>
  43
  44 const double tolerance = 1e-7;
  45
  46
  47 SketchPlugin_Circle::SketchPlugin_Circle()
  48 : SketchPlugin_SketchEntity()
  49 {
  50 }
  51
  52 void SketchPlugin_Circle::initDerivedClassAttributes()
  53 {
  54   data()->addAttribute(CENTER_ID(), GeomDataAPI_Point2D::typeId());
  55   data()->addAttribute(RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
  56
  57   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  58   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  59 }
  60
  61 void SketchPlugin_Circle::execute()
  62 {
  63   SketchPlugin_Sketch* aSketch = sketch();
  64   if(!aSketch) {
  65     return;
  66   }
  67
  68   // Compute a circle in 3D view.
  69   std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
  70       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
  71   AttributeDoublePtr aRadiusAttr = real(RADIUS_ID());
  72   if(!aCenterAttr->isInitialized() || !aRadiusAttr->isInitialized()) {
  73     return;
  74   }
  75
  76   double aRadius = aRadiusAttr->value();
  77   if(aRadius < tolerance) {
  78     return;
  79   }
  80
  81   // Make a visible point.
  82   SketchPlugin_Sketch::createPoint2DResult(this, sketch(), CENTER_ID(), 0);
  83
  84   // Make a visible circle.
  85   std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
  86   std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
  87       aSketch->data()->attribute(SketchPlugin_Sketch::NORM_ID()));
  88   std::shared_ptr<GeomAPI_Dir> aNormal(new GeomAPI_Dir(aNDir->x(), aNDir->y(), aNDir->z()));
  89
  90   std::shared_ptr<GeomAPI_Shape> aCircleShape =
  91       GeomAlgoAPI_EdgeBuilder::lineCircle(aCenter, aNormal, aRadius);
  92
  93   std::shared_ptr<ModelAPI_ResultConstruction> aResult = document()->createConstruction(data(), 1);
  94   aResult->setShape(aCircleShape);
  95   aResult->setIsInHistory(false);
  96   setResult(aResult, 1);
  97 }
  98
  99 void SketchPlugin_Circle::move(double theDeltaX, double theDeltaY)
 100 {
 101   std::shared_ptr<ModelAPI_Data> aData = data();
 102   if(!aData->isValid()) {
 103     return;
 104   }
 105
 106   std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 107       aData->attribute(CENTER_ID()));
 108   if(aPoint->isInitialized()) {
 109     aPoint->move(theDeltaX, theDeltaY);
 110   }
 111 }
 112
 113 bool SketchPlugin_Circle::isFixed() {
 114   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 115 }
 116
 117 void SketchPlugin_Circle::attributeChanged(const std::string& theID) {
 118   // the second condition for unability to move external segments anywhere
 119   if (theID == EXTERNAL_ID() || isFixed()) {
 120     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 121     if (!aSelection) {
 122       // empty shape in selection shows that the shape is equal to context
 123       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 124       if (anExtRes)
 125         aSelection = anExtRes->shape();
 126     }
 127     // update arguments due to the selection value
 128     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 129       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 130       std::shared_ptr<GeomAPI_Circ> aCirc = anEdge->circle();
 131       std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
 132         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(CENTER_ID()));
 133       aCenterAttr->setValue(sketch()->to2D(aCirc->center()));
 134       real(RADIUS_ID())->setValue(aCirc->radius());
 135     }
 136   }
 137 }