src/SketchPlugin/SketchPlugin_Line.cpp

   1 // Copyright (C) 2014-2019  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 email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "SketchPlugin_Line.h"
  21 #include "SketchPlugin_Sketch.h"
  22 #include "SketchPlugin_ConstraintCoincidence.h"
  23
  24 #include <ModelAPI_Data.h>
  25 #include <ModelAPI_EventReentrantMessage.h>
  26 #include <ModelAPI_ResultConstruction.h>
  27 #include <ModelAPI_AttributeSelection.h>
  28 #include <ModelAPI_AttributeBoolean.h>
  29 #include <ModelAPI_AttributeDouble.h>
  30 #include <ModelAPI_Validator.h>
  31 #include <ModelAPI_Session.h>
  32
  33 #include <GeomAPI_Pnt.h>
  34 #include <GeomAPI_Lin2d.h>
  35 #include <GeomAPI_Pnt2d.h>
  36
  37 #include <GeomAlgoAPI_EdgeBuilder.h>
  38 #include <GeomDataAPI_Point2D.h>
  39
  40 SketchPlugin_Line::SketchPlugin_Line()
  41     : SketchPlugin_SketchEntity()
  42 {}
  43
  44 void SketchPlugin_Line::initAttributes()
  45 {
  46   SketchPlugin_SketchEntity::initAttributes();
  47   /// new attributes should be added to end of the feature in order to provide
  48   /// correct attribute values in previous saved studies
  49   data()->addAttribute(LENGTH_ID(), ModelAPI_AttributeDouble::typeId());
  50 }
  51
  52 void SketchPlugin_Line::initDerivedClassAttributes()
  53 {
  54   data()->addAttribute(START_ID(), GeomDataAPI_Point2D::typeId());
  55   data()->addAttribute(END_ID(), GeomDataAPI_Point2D::typeId());
  56   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  57   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  58 }
  59
  60 void SketchPlugin_Line::execute()
  61 {
  62   SketchPlugin_Sketch* aSketch = sketch();
  63   if (aSketch) {
  64     // compute a start point in 3D view
  65     std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
  66         GeomDataAPI_Point2D>(data()->attribute(START_ID()));
  67     // compute an end point in 3D view
  68     std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
  69         GeomDataAPI_Point2D>(data()->attribute(END_ID()));
  70     if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
  71       std::shared_ptr<GeomAPI_Pnt> aStart(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
  72       std::shared_ptr<GeomAPI_Pnt> anEnd(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
  73       //std::cout<<"Execute line "<<aStart->x()<<" "<<aStart->y()<<" "<<aStart->z()<<" - "
  74       //  <<anEnd->x()<<" "<<anEnd->y()<<" "<<anEnd->z()<<std::endl;
  75       // make linear edge
  76       std::shared_ptr<GeomAPI_Edge> anEdge = GeomAlgoAPI_EdgeBuilder::line(aStart, anEnd);
  77       // store the result
  78       std::shared_ptr<ModelAPI_ResultConstruction> aConstr = document()->createConstruction(
  79           data());
  80       aConstr->setShape(anEdge);
  81       aConstr->setIsInHistory(false);
  82       setResult(aConstr);
  83
  84       static Events_ID anId = ModelAPI_EventReentrantMessage::eventId();
  85       std::shared_ptr<ModelAPI_EventReentrantMessage> aMessage = std::shared_ptr
  86           <ModelAPI_EventReentrantMessage>(new ModelAPI_EventReentrantMessage(anId, this));
  87       aMessage->setCreatedFeature(ModelAPI_Feature::feature(
  88                                   data()->attribute(START_ID())->owner()));
  89       Events_Loop::loop()->send(aMessage);
  90     }
  91   }
  92 }
  93
  94 // LCOV_EXCL_START
  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 // LCOV_EXCL_STOP
 117
 118 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 119 {
 120   double aDelta = 0;
 121
 122   std::shared_ptr<ModelAPI_Data> aData = data();
 123   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 124     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
 125   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 126     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
 127
 128   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 129
 130   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
 131     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
 132     aDelta = aResult->distance(thePoint);
 133   } else {  // distance
 134     aDelta = aLin2d.distance(thePoint);
 135   }
 136
 137   return aDelta;
 138 }
 139
 140 const std::string& SketchPlugin_Line::getKind()
 141 {
 142   static std::string MY_KIND = SketchPlugin_Line::ID();
 143   return MY_KIND;
 144 }
 145
 146 bool SketchPlugin_Line::isFixed() {
 147   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 148 }
 149
 150 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
 151   // the second condition for unability to move external segments anywhere
 152   // isCopy() is checked temporary for case when copied lines stored external id state
 153   // to be removed after debug
 154   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
 155     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 156     if (!aSelection) {
 157       // empty shape in selection shows that the shape is equal to context
 158       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 159       if (anExtRes)
 160         aSelection = anExtRes->shape();
 161     }
 162     // update arguments due to the selection value
 163     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 164       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 165       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
 166         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
 167       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
 168       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
 169         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
 170       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
 171       updateLenghtValue();
 172     }
 173   }
 174   else if (theID == START_ID() || theID == END_ID()) {
 175     updateLenghtValue();
 176   }
 177 }
 178
 179 void SketchPlugin_Line::updateLenghtValue()
 180 {
 181   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
 182       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
 183   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
 184       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
 185   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
 186     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
 187     data()->real(LENGTH_ID())->setValue(aDistance);
 188   }
 189 }