src/SketchPlugin/SketchPlugin_Line.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_Line.h"
  22 #include "SketchPlugin_Sketch.h"
  23 #include "SketchPlugin_ConstraintCoincidence.h"
  24
  25 #include <ModelAPI_Data.h>
  26 #include <ModelAPI_EventReentrantMessage.h>
  27 #include <ModelAPI_ResultConstruction.h>
  28 #include <ModelAPI_AttributeSelection.h>
  29 #include <ModelAPI_AttributeBoolean.h>
  30 #include <ModelAPI_AttributeDouble.h>
  31 #include <ModelAPI_Validator.h>
  32 #include <ModelAPI_Session.h>
  33
  34 #include <GeomAPI_Pnt.h>
  35 #include <GeomAPI_Lin2d.h>
  36 #include <GeomAPI_Pnt2d.h>
  37
  38 #include <GeomAlgoAPI_EdgeBuilder.h>
  39 #include <GeomDataAPI_Point2D.h>
  40
  41 SketchPlugin_Line::SketchPlugin_Line()
  42     : SketchPlugin_SketchEntity()
  43 {}
  44
  45 void SketchPlugin_Line::initAttributes()
  46 {
  47   SketchPlugin_SketchEntity::initAttributes();
  48   /// new attributes should be added to end of the feature in order to provide
  49   /// correct attribute values in previous saved studies
  50   data()->addAttribute(LENGTH_ID(), ModelAPI_AttributeDouble::typeId());
  51 }
  52
  53 void SketchPlugin_Line::initDerivedClassAttributes()
  54 {
  55   data()->addAttribute(START_ID(), GeomDataAPI_Point2D::typeId());
  56   data()->addAttribute(END_ID(), GeomDataAPI_Point2D::typeId());
  57   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  58   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  59 }
  60
  61 void SketchPlugin_Line::execute()
  62 {
  63   SketchPlugin_Sketch* aSketch = sketch();
  64   if (aSketch) {
  65     // compute a start point in 3D view
  66     std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
  67         GeomDataAPI_Point2D>(data()->attribute(START_ID()));
  68     // compute an end point in 3D view
  69     std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
  70         GeomDataAPI_Point2D>(data()->attribute(END_ID()));
  71     if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
  72       std::shared_ptr<GeomAPI_Pnt> aStart(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
  73       std::shared_ptr<GeomAPI_Pnt> anEnd(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
  74       //std::cout<<"Execute line "<<aStart->x()<<" "<<aStart->y()<<" "<<aStart->z()<<" - "
  75       //  <<anEnd->x()<<" "<<anEnd->y()<<" "<<anEnd->z()<<std::endl;
  76       // make linear edge
  77       std::shared_ptr<GeomAPI_Edge> anEdge = GeomAlgoAPI_EdgeBuilder::line(aStart, anEnd);
  78       // store the result
  79       std::shared_ptr<ModelAPI_ResultConstruction> aConstr = document()->createConstruction(
  80           data());
  81       aConstr->setShape(anEdge);
  82       aConstr->setIsInHistory(false);
  83       setResult(aConstr);
  84
  85       static Events_ID anId = ModelAPI_EventReentrantMessage::eventId();
  86       std::shared_ptr<ModelAPI_EventReentrantMessage> aMessage = std::shared_ptr
  87           <ModelAPI_EventReentrantMessage>(new ModelAPI_EventReentrantMessage(anId, this));
  88       aMessage->setCreatedFeature(ModelAPI_Feature::feature(
  89                                   data()->attribute(START_ID())->owner()));
  90       Events_Loop::loop()->send(aMessage);
  91     }
  92   }
  93 }
  94
  95 std::string SketchPlugin_Line::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  96 {
  97   std::string aFilledAttributeName;
  98
  99   std::shared_ptr<ModelAPI_EventReentrantMessage> aReentrantMessage =
 100         std::dynamic_pointer_cast<ModelAPI_EventReentrantMessage>(theMessage);
 101   if (aReentrantMessage.get()) {
 102     FeaturePtr aCreatedFeature = aReentrantMessage->createdFeature();
 103
 104     // Initialize new line with first point equal to end of previous
 105     std::shared_ptr<ModelAPI_Data> aSFData = aCreatedFeature->data();
 106     std::shared_ptr<GeomDataAPI_Point2D> aSPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 107                                                  aSFData->attribute(SketchPlugin_Line::END_ID()));
 108     std::shared_ptr<ModelAPI_Data> aNFData = data();
 109     std::shared_ptr<GeomDataAPI_Point2D> aNPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 110                                                  aNFData->attribute(SketchPlugin_Line::START_ID()));
 111     aNPoint->setValue(aSPoint->x(), aSPoint->y());
 112     SketchPlugin_ConstraintCoincidence::createCoincidenceFeature(sketch(), aSPoint, aNPoint);
 113   }
 114   return aFilledAttributeName;
 115 }
 116
 117 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 118 {
 119   double aDelta = 0;
 120
 121   std::shared_ptr<ModelAPI_Data> aData = data();
 122   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 123     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
 124   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 125     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
 126
 127   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 128
 129   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
 130     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
 131     aDelta = aResult->distance(thePoint);
 132   } else {  // distance
 133     aDelta = aLin2d.distance(thePoint);
 134   }
 135
 136   return aDelta;
 137 }
 138
 139 const std::string& SketchPlugin_Line::getKind()
 140 {
 141   static std::string MY_KIND = SketchPlugin_Line::ID();
 142   return MY_KIND;
 143 }
 144
 145 bool SketchPlugin_Line::isFixed() {
 146   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 147 }
 148
 149 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
 150   // the second condition for unability to move external segments anywhere
 151   // isCopy() is checked temporary for case when copied lines stored external id state
 152   // to be removed after debug
 153   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
 154     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 155     if (!aSelection) {
 156       // empty shape in selection shows that the shape is equal to context
 157       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 158       if (anExtRes)
 159         aSelection = anExtRes->shape();
 160     }
 161     // update arguments due to the selection value
 162     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 163       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 164       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
 165         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
 166       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
 167       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
 168         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
 169       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
 170       updateLenghtValue();
 171     }
 172   }
 173   else if (theID == START_ID() || theID == END_ID()) {
 174     updateLenghtValue();
 175   }
 176 }
 177
 178 void SketchPlugin_Line::updateLenghtValue()
 179 {
 180   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
 181       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
 182   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
 183       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
 184   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
 185     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
 186     data()->real(LENGTH_ID())->setValue(aDistance);
 187   }
 188 }