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   data()->addAttribute(PARENT_ID(), ModelAPI_AttributeReference::typeId());
  52   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), PARENT_ID());
  53 }
  54
  55 void SketchPlugin_Line::initDerivedClassAttributes()
  56 {
  57   data()->addAttribute(START_ID(), GeomDataAPI_Point2D::typeId());
  58   data()->addAttribute(END_ID(), GeomDataAPI_Point2D::typeId());
  59   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  60   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  61 }
  62
  63 void SketchPlugin_Line::execute()
  64 {
  65   SketchPlugin_Sketch* aSketch = sketch();
  66   if (aSketch) {
  67     // compute a start point in 3D view
  68     std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
  69         GeomDataAPI_Point2D>(data()->attribute(START_ID()));
  70     // compute an end point in 3D view
  71     std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
  72         GeomDataAPI_Point2D>(data()->attribute(END_ID()));
  73     if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
  74       SketchPlugin_Sketch::createLine2DResult(this, aSketch, START_ID(), END_ID());
  75
  76       static Events_ID anId = ModelAPI_EventReentrantMessage::eventId();
  77       std::shared_ptr<ModelAPI_EventReentrantMessage> aMessage = std::shared_ptr
  78           <ModelAPI_EventReentrantMessage>(new ModelAPI_EventReentrantMessage(anId, this));
  79       aMessage->setCreatedFeature(ModelAPI_Feature::feature(
  80                                   data()->attribute(START_ID())->owner()));
  81       Events_Loop::loop()->send(aMessage);
  82     }
  83   }
  84 }
  85
  86 // LCOV_EXCL_START
  87 std::string SketchPlugin_Line::processEvent(const std::shared_ptr<Events_Message>& theMessage)
  88 {
  89   std::string aFilledAttributeName;
  90
  91   std::shared_ptr<ModelAPI_EventReentrantMessage> aReentrantMessage =
  92         std::dynamic_pointer_cast<ModelAPI_EventReentrantMessage>(theMessage);
  93   if (aReentrantMessage.get()) {
  94     FeaturePtr aCreatedFeature = aReentrantMessage->createdFeature();
  95
  96     // Initialize new line with first point equal to end of previous
  97     std::shared_ptr<ModelAPI_Data> aSFData = aCreatedFeature->data();
  98     std::shared_ptr<GeomDataAPI_Point2D> aSPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
  99                                                  aSFData->attribute(SketchPlugin_Line::END_ID()));
 100     std::shared_ptr<ModelAPI_Data> aNFData = data();
 101     std::shared_ptr<GeomDataAPI_Point2D> aNPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 102                                                  aNFData->attribute(SketchPlugin_Line::START_ID()));
 103     aNPoint->setValue(aSPoint->x(), aSPoint->y());
 104     SketchPlugin_ConstraintCoincidence::createCoincidenceFeature(sketch(), aSPoint, aNPoint);
 105   }
 106   return aFilledAttributeName;
 107 }
 108 // LCOV_EXCL_STOP
 109
 110 double SketchPlugin_Line::distanceToPoint(const std::shared_ptr<GeomAPI_Pnt2d>& thePoint)
 111 {
 112   double aDelta = 0;
 113
 114   std::shared_ptr<ModelAPI_Data> aData = data();
 115   std::shared_ptr<GeomDataAPI_Point2D> aPoint1 =
 116     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(START_ID()));
 117   std::shared_ptr<GeomDataAPI_Point2D> aPoint2 =
 118     std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(END_ID()));
 119
 120   GeomAPI_Lin2d aLin2d(aPoint1->x(), aPoint1->y(), aPoint2->x(), aPoint2->y());
 121
 122   if (false/*projection*/) {  // TODO: if it has not been necessary, remove this block
 123     std::shared_ptr<GeomAPI_Pnt2d> aResult = aLin2d.project(thePoint);
 124     aDelta = aResult->distance(thePoint);
 125   } else {  // distance
 126     aDelta = aLin2d.distance(thePoint);
 127   }
 128
 129   return aDelta;
 130 }
 131
 132 const std::string& SketchPlugin_Line::getKind()
 133 {
 134   static std::string MY_KIND = SketchPlugin_Line::ID();
 135   return MY_KIND;
 136 }
 137
 138 bool SketchPlugin_Line::isFixed() {
 139   return data()->selection(EXTERNAL_ID())->context().get() != NULL;
 140 }
 141
 142 void SketchPlugin_Line::attributeChanged(const std::string& theID) {
 143   // the second condition for unability to move external segments anywhere
 144   // isCopy() is checked temporary for case when copied lines stored external id state
 145   // to be removed after debug
 146   if ((theID == EXTERNAL_ID() || isFixed()) && !isCopy()) {
 147     std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
 148     if (!aSelection) {
 149       // empty shape in selection shows that the shape is equal to context
 150       ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
 151       if (anExtRes)
 152         aSelection = anExtRes->shape();
 153     }
 154     // update arguments due to the selection value
 155     if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
 156       std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
 157       std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
 158         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
 159       aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
 160       std::shared_ptr<GeomDataAPI_Point2D> anEndAttr =
 161         std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(END_ID()));
 162       anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
 163       updateLenghtValue();
 164     }
 165   }
 166   else if (theID == START_ID() || theID == END_ID()) {
 167     updateLenghtValue();
 168   }
 169 }
 170
 171 void SketchPlugin_Line::updateLenghtValue()
 172 {
 173   std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
 174       GeomDataAPI_Point2D>(data()->attribute(START_ID()));
 175   std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
 176       GeomDataAPI_Point2D>(data()->attribute(END_ID()));
 177   if (aStartAttr->isInitialized() && anEndAttr->isInitialized()) {
 178     double aDistance = aStartAttr->pnt()->distance(anEndAttr->pnt());
 179     data()->real(LENGTH_ID())->setValue(aDistance);
 180   }
 181 }