src/SketchPlugin/SketchPlugin_IntersectionPoint.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_IntersectionPoint.h"
  22
  23 #include <ModelAPI_AttributeSelection.h>
  24 #include <ModelAPI_Session.h>
  25 #include <ModelAPI_Validator.h>
  26
  27 #include <GeomAPI_Edge.h>
  28 #include <GeomAPI_Lin.h>
  29 #include <GeomDataAPI_Point2D.h>
  30
  31 SketchPlugin_IntersectionPoint::SketchPlugin_IntersectionPoint()
  32   : SketchPlugin_Point()
  33 {
  34 }
  35
  36 void SketchPlugin_IntersectionPoint::initDerivedClassAttributes()
  37 {
  38   data()->addAttribute(EXTERNAL_FEATURE_ID(), ModelAPI_AttributeSelection::typeId());
  39   data()->addAttribute(INCLUDE_INTO_RESULT(), ModelAPI_AttributeBoolean::typeId());
  40
  41   SketchPlugin_Point::initDerivedClassAttributes();
  42
  43   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), AUXILIARY_ID());
  44 }
  45
  46 void SketchPlugin_IntersectionPoint::execute()
  47 {
  48   SketchPlugin_Sketch* aSketch = sketch();
  49   if (aSketch) {
  50     computePoint();
  51     SketchPlugin_Point::execute();
  52
  53     // set this feature as external
  54     data()->selection(EXTERNAL_ID())->setValue(lastResult(), lastResult()->shape());
  55   }
  56 }
  57
  58 void SketchPlugin_IntersectionPoint::attributeChanged(const std::string& theID)
  59 {
  60   if (theID == EXTERNAL_FEATURE_ID()) {
  61     // compute intersection between line and sketch plane
  62     computePoint();
  63   }
  64 }
  65
  66 void SketchPlugin_IntersectionPoint::computePoint()
  67 {
  68   AttributeSelectionPtr aLineAttr =
  69       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(attribute(EXTERNAL_FEATURE_ID()));
  70
  71   std::shared_ptr<GeomAPI_Edge> anEdge;
  72   if(aLineAttr && aLineAttr->value() && aLineAttr->value()->isEdge()) {
  73     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->value()));
  74   } else if(aLineAttr->context() && aLineAttr->context()->shape() &&
  75             aLineAttr->context()->shape()->isEdge()) {
  76     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aLineAttr->context()->shape()));
  77   }
  78   if(!anEdge.get())
  79     return;
  80
  81   std::shared_ptr<GeomAPI_Lin> aLine = anEdge->line();
  82   std::shared_ptr<GeomAPI_Pln> aSketchPlane = sketch()->plane();
  83
  84   std::shared_ptr<GeomAPI_Pnt> anIntersection = aSketchPlane->intersect(aLine);
  85   if (!anIntersection)
  86     return;
  87
  88   std::shared_ptr<GeomDataAPI_Point2D> aCoordAttr =
  89       std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(COORD_ID()));
  90   aCoordAttr->setValue(sketch()->to2D(anIntersection));
  91 }