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_Edge.h>
  34 #include <GeomAPI_Lin2d.h>
  35 #include <GeomAPI_Pnt.h>
  36 #include <GeomAPI_Pnt2d.h>
  37
  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       SketchPlugin_Sketch::createLine2DResult(this, aSketch, START_ID(), END_ID());
  72
  73       static Events_ID anId = ModelAPI_EventReentrantMessage::eventId();
  74       std::shared_ptr<ModelAPI_EventReentrantMessage> aMessage = std::shared_ptr
  75           <ModelAPI_EventReentrantMessage>(new ModelAPI_EventReentrantMessage(anId, this));
  76       aMessage->setCreatedFeature(ModelAPI_Feature::feature(
  77                                   data()->attribute(START_ID())->owner()));
  78       Events_Loop::loop()->send(aMessage);
  79     }
  80   }
  81 }
  82
  83 // LCOV_EXCL_START
  84 std::string SketchPlugin_Line::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  85 {
  86   std::string aFilledAttributeName;
  87
  88   std::shared_ptr<ModelAPI_EventReentrantMessage> aReentrantMessage =
  89         std::dynamic_pointer_cast<ModelAPI_EventReentrantMessage>(theMessage);
  90   if (aReentrantMessage.get()) {
  91     FeaturePtr aCreatedFeature = aReentrantMessage->createdFeature();
  92
  93     // Initialize new line with first point equal to end of previous
  94     std::shared_ptr<ModelAPI_Data> aSFData = aCreatedFeature->data();
  95     std::shared_ptr<GeomDataAPI_Point2D> aSPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
  96                                                  aSFData->attribute(SketchPlugin_Line::END_ID()));
  97     std::shared_ptr<ModelAPI_Data> aNFData = data();
  98     std::shared_ptr<GeomDataAPI_Point2D> aNPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
  99                                                  aNFData->attribute(SketchPlugin_Line::START_ID()));
 100     aNPoint->setValue(aSPoint->x(), aSPoint->y());
 101     SketchPlugin_ConstraintCoincidence::createCoincidenceFeature(sketch(), aSPoint, aNPoint);
 102   }
 103   return aFilledAttributeName;
 104 }
 105 // LCOV_EXCL_STOP
 106
 107 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 108 {
 109   double aDelta = 0;
 110
 111   std::shared_ptr<ModelAPI_Data> aData = data();
 112   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 113     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
 114   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 115     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
 116
 117   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 118
 119   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
 120     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
 121     aDelta = aResult->distance(thePoint);
 122   } else {  // distance
 123     aDelta = aLin2d.distance(thePoint);
 124   }
 125
 126   return aDelta;
 127 }
 128
 129 const std::string& SketchPlugin_Line::getKind()
 130 {
 131   static std::string MY_KIND = SketchPlugin_Line::ID();
 132   return MY_KIND;
 133 }
 134
 135 bool SketchPlugin_Line::isFixed() {
 136   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 137 }
 138
 139 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
 140   // the second condition for unability to move external segments anywhere
 141   // isCopy() is checked temporary for case when copied lines stored external id state
 142   // to be removed after debug
 143   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
 144     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 145     if (!aSelection) {
 146       // empty shape in selection shows that the shape is equal to context
 147       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 148       if (anExtRes)
 149         aSelection = anExtRes->shape();
 150     }
 151     // update arguments due to the selection value
 152     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 153       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 154       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
 155         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
 156       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
 157       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
 158         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
 159       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
 160       updateLenghtValue();
 161     }
 162   }
 163   else if (theID == START_ID() || theID == END_ID()) {
 164     updateLenghtValue();
 165   }
 166 }
 167
 168 void SketchPlugin_Line::updateLenghtValue()
 169 {
 170   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
 171       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
 172   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
 173       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
 174   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
 175     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
 176     data()->real(LENGTH_ID())->setValue(aDistance);
 177   }
 178 }