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 email : webmaster.salome@opencascade.com<mailto: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 void SketchPlugin_Line::move(double theDeltaX, double theDeltaY)
  95 {
  96   std::shared_ptr<ModelAPI_Data> aData = data();
  97   if (!aData->isValid())
  98     return;
  99
 100   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 101     (aData->attribute(START_ID()));
 102   aPoint1->move(theDeltaX, theDeltaY);
 103
 104   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>
 105     (aData->attribute(END_ID()));
 106   aPoint2->move(theDeltaX, theDeltaY);
 107 }
 108
 109 std::string SketchPlugin_Line::processEvent(const std::shared_ptr<Events_Message>& theMessage)
 110 {
 111   std::string aFilledAttributeName;
 112
 113   std::shared_ptr<ModelAPI_EventReentrantMessage> aReentrantMessage =
 114         std::dynamic_pointer_cast<ModelAPI_EventReentrantMessage>(theMessage);
 115   if (aReentrantMessage.get()) {
 116     FeaturePtr aCreatedFeature = aReentrantMessage->createdFeature();
 117
 118     // Initialize new line with first point equal to end of previous
 119     std::shared_ptr<ModelAPI_Data> aSFData = aCreatedFeature->data();
 120     std::shared_ptr<GeomDataAPI_Point2D> aSPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 121                                                  aSFData->attribute(SketchPlugin_Line::END_ID()));
 122     std::shared_ptr<ModelAPI_Data> aNFData = data();
 123     std::shared_ptr<GeomDataAPI_Point2D> aNPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 124                                                  aNFData->attribute(SketchPlugin_Line::START_ID()));
 125     aNPoint->setValue(aSPoint->x(), aSPoint->y());
 126     SketchPlugin_ConstraintCoincidence::createCoincidenceFeature(sketch(), aSPoint, aNPoint);
 127   }
 128   return aFilledAttributeName;
 129 }
 130
 131 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 132 {
 133   double aDelta = 0;
 134
 135   std::shared_ptr<ModelAPI_Data> aData = data();
 136   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 137     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
 138   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 139     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
 140
 141   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 142
 143   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
 144     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
 145     aDelta = aResult->distance(thePoint);
 146   } else {  // distance
 147     aDelta = aLin2d.distance(thePoint);
 148   }
 149
 150   return aDelta;
 151 }
 152
 153 const std::string& SketchPlugin_Line::getKind()
 154 {
 155   static std::string MY_KIND = SketchPlugin_Line::ID();
 156   return MY_KIND;
 157 }
 158
 159 bool SketchPlugin_Line::isFixed() {
 160   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 161 }
 162
 163 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
 164   // the second condition for unability to move external segments anywhere
 165   // isCopy() is checked temporary for case when copied lines stored external id state
 166   // to be removed after debug
 167   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
 168     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 169     if (!aSelection) {
 170       // empty shape in selection shows that the shape is equal to context
 171       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 172       if (anExtRes)
 173         aSelection = anExtRes->shape();
 174     }
 175     // update arguments due to the selection value
 176     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 177       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 178       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
 179         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
 180       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
 181       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
 182         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
 183       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
 184       updateLenghtValue();
 185     }
 186   }
 187   else if (theID == START_ID() || theID == END_ID()) {
 188     updateLenghtValue();
 189   }
 190 }
 191
 192 void SketchPlugin_Line::updateLenghtValue()
 193 {
 194   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
 195       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
 196   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
 197       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
 198   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
 199     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
 200     data()->real(LENGTH_ID())->setValue(aDistance);
 201   }
 202 }