src/SketchPlugin/SketchPlugin_Projection.cpp

   1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
   2
   3 // File:    SketchPlugin_Projection.cpp
   4 // Created: 07 May 2014
   5 // Author:  Artem ZHIDKOV
   6
   7 #include <SketchPlugin_Projection.h>
   8
   9 #include <SketchPlugin_Arc.h>
  10 #include <SketchPlugin_Circle.h>
  11 #include <SketchPlugin_Line.h>
  12 #include <SketchPlugin_Sketch.h>
  13
  14 #include <ModelAPI_AttributeRefAttr.h>
  15 #include <ModelAPI_AttributeSelection.h>
  16 #include <ModelAPI_AttributeDouble.h>
  17 #include <ModelAPI_ResultConstruction.h>
  18 #include <ModelAPI_Session.h>
  19 #include <ModelAPI_Validator.h>
  20
  21 #include <GeomAPI_Circ.h>
  22 #include <GeomAPI_Edge.h>
  23 #include <GeomAPI_Lin.h>
  24 #include <GeomAPI_Pnt.h>
  25 #include <GeomAPI_Pnt2d.h>
  26 #include <GeomAlgoAPI_EdgeBuilder.h>
  27 #include <GeomDataAPI_Point2D.h>
  28
  29 #include <cmath>
  30
  31 static const double tolerance = 1.e-7;
  32
  33 SketchPlugin_Projection::SketchPlugin_Projection()
  34     : SketchPlugin_SketchEntity(),
  35       myIsComputing(false)
  36 {
  37 }
  38
  39 void SketchPlugin_Projection::initDerivedClassAttributes()
  40 {
  41   data()->addAttribute(EXTERNAL_FEATURE_ID(), ModelAPI_AttributeSelection::typeId());
  42   data()->addAttribute(PROJECTED_FEATURE_ID(), ModelAPI_AttributeRefAttr::typeId());
  43   data()->attribute(PROJECTED_FEATURE_ID())->setIsArgument(false);
  44
  45   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  46   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  47 }
  48
  49 void SketchPlugin_Projection::execute()
  50 {
  51   AttributeRefAttrPtr aRefAttr = data()->refattr(PROJECTED_FEATURE_ID());
  52   if (!aRefAttr || !aRefAttr->isInitialized())
  53     return;
  54   FeaturePtr aProjection = ModelAPI_Feature::feature(aRefAttr->object());
  55
  56   if (!lastResult().get()) {
  57     ResultConstructionPtr aConstr = document()->createConstruction(data());
  58     aConstr->setShape(std::shared_ptr<GeomAPI_Edge>());
  59     aConstr->setIsInHistory(false);
  60     setResult(aConstr);
  61
  62     aProjection->selection(EXTERNAL_ID())->setValue(lastResult(), lastResult()->shape());
  63   }
  64 }
  65
  66 void SketchPlugin_Projection::move(double theDeltaX, double theDeltaY)
  67 {
  68   // feature cannot be moved
  69 }
  70
  71 void SketchPlugin_Projection::attributeChanged(const std::string& theID)
  72 {
  73   if ((theID == EXTERNAL_FEATURE_ID() || theID == EXTERNAL_ID()) && !myIsComputing) {
  74     myIsComputing = true;
  75     computeProjection(theID);
  76     myIsComputing = false;
  77   }
  78 }
  79
  80 void SketchPlugin_Projection::computeProjection(const std::string& theID)
  81 {
  82   AttributeSelectionPtr aExtFeature =
  83       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(attribute(EXTERNAL_FEATURE_ID()));
  84
  85   std::shared_ptr<GeomAPI_Edge> anEdge;
  86   if (aExtFeature && aExtFeature->value() && aExtFeature->value()->isEdge()) {
  87     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aExtFeature->value()));
  88   } else if (aExtFeature->context() && aExtFeature->context()->shape() && aExtFeature->context()->shape()->isEdge()) {
  89     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aExtFeature->context()->shape()));
  90   }
  91   if (!anEdge.get())
  92     return;
  93
  94   AttributeRefAttrPtr aRefAttr = data()->refattr(PROJECTED_FEATURE_ID());
  95   FeaturePtr aProjection;
  96   if (aRefAttr && aRefAttr->isInitialized())
  97     aProjection = ModelAPI_Feature::feature(aRefAttr->object());
  98
  99   // if the type of feature differs with already selected, remove it and create once again
 100   if (aProjection) {
 101     if ((anEdge->isLine() && aProjection->getKind() != SketchPlugin_Line::ID()) ||
 102         (anEdge->isCircle() && aProjection->getKind() != SketchPlugin_Circle::ID()) ||
 103         (anEdge->isArc() && aProjection->getKind() != SketchPlugin_Arc::ID())) {
 104       DocumentPtr aDoc = sketch()->document();
 105       aDoc->removeFeature(aProjection);
 106       aProjection = FeaturePtr();
 107       aRefAttr->setObject(aProjection);
 108     }
 109   }
 110
 111   std::shared_ptr<GeomAPI_Pln> aSketchPlane = sketch()->plane();
 112
 113   if (anEdge->isLine()) {
 114     std::shared_ptr<GeomAPI_Pnt> aFirst = aSketchPlane->project(anEdge->firstPoint());
 115     std::shared_ptr<GeomAPI_Pnt> aLast = aSketchPlane->project(anEdge->lastPoint());
 116
 117     std::shared_ptr<GeomAPI_Pnt2d> aFirstInSketch = sketch()->to2D(aFirst);
 118     std::shared_ptr<GeomAPI_Pnt2d> aLastInSketch = sketch()->to2D(aLast);
 119     if (aFirstInSketch->distance(aLastInSketch) < tolerance)
 120       return; // line is semi-orthogonal to the sketch plane
 121
 122     if (!aProjection)
 123       aProjection = sketch()->addFeature(SketchPlugin_Line::ID());
 124
 125     // update attributes of projection
 126     std::shared_ptr<GeomDataAPI_Point2D> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 127         aProjection->attribute(SketchPlugin_Line::START_ID()));
 128     std::shared_ptr<GeomDataAPI_Point2D> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 129         aProjection->attribute(SketchPlugin_Line::END_ID()));
 130     aStartPnt->setValue(aFirstInSketch);
 131     aEndPnt->setValue(aLastInSketch);
 132   }
 133   else if (anEdge->isCircle()) {
 134     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
 135     double aRadius = aCircle->radius();
 136
 137     std::shared_ptr<GeomAPI_Pnt> aCenter = aSketchPlane->project(aCircle->center());
 138     std::shared_ptr<GeomAPI_Pnt2d> aCenterInSketch = sketch()->to2D(aCenter);
 139
 140     if (!aProjection)
 141       aProjection = sketch()->addFeature(SketchPlugin_Circle::ID());
 142
 143     // update attributes of projection
 144     std::shared_ptr<GeomDataAPI_Point2D> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 145         aProjection->attribute(SketchPlugin_Circle::CENTER_ID()));
 146     aCenterPnt->setValue(aCenterInSketch);
 147     aProjection->real(SketchPlugin_Circle::RADIUS_ID())->setValue(aRadius);
 148   }
 149   else if (anEdge->isArc()) {
 150     std::shared_ptr<GeomAPI_Pnt> aFirst = aSketchPlane->project(anEdge->firstPoint());
 151     std::shared_ptr<GeomAPI_Pnt> aLast = aSketchPlane->project(anEdge->lastPoint());
 152     std::shared_ptr<GeomAPI_Pnt2d> aFirstInSketch = sketch()->to2D(aFirst);
 153     std::shared_ptr<GeomAPI_Pnt2d> aLastInSketch = sketch()->to2D(aLast);
 154
 155     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
 156     std::shared_ptr<GeomAPI_Pnt> aCenter = aSketchPlane->project(aCircle->center());
 157     std::shared_ptr<GeomAPI_Pnt2d> aCenterInSketch = sketch()->to2D(aCenter);
 158
 159     if (!aProjection)
 160       aProjection = sketch()->addFeature(SketchPlugin_Arc::ID());
 161
 162     // update attributes of projection
 163     std::shared_ptr<GeomDataAPI_Point2D> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 164         aProjection->attribute(SketchPlugin_Arc::CENTER_ID()));
 165     std::shared_ptr<GeomDataAPI_Point2D> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 166         aProjection->attribute(SketchPlugin_Arc::START_ID()));
 167     std::shared_ptr<GeomDataAPI_Point2D> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 168         aProjection->attribute(SketchPlugin_Arc::END_ID()));
 169     aStartPnt->setValue(aFirstInSketch);
 170     aEndPnt->setValue(aLastInSketch);
 171     aCenterPnt->setValue(aCenterInSketch);
 172   }
 173
 174   aProjection->execute();
 175   aRefAttr->setObject(aProjection);
 176
 177   if (theID == EXTERNAL_FEATURE_ID())
 178     selection(EXTERNAL_ID())->setValue(aExtFeature->context(), aExtFeature->context()->shape());
 179 }