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 #include <SketchPlugin_ConstraintRigid.h>
  14
  15 #include <ModelAPI_AttributeRefAttr.h>
  16 #include <ModelAPI_AttributeSelection.h>
  17 #include <ModelAPI_AttributeDouble.h>
  18 #include <ModelAPI_ResultConstruction.h>
  19 #include <ModelAPI_Session.h>
  20 #include <ModelAPI_Validator.h>
  21
  22 #include <GeomAPI_Circ.h>
  23 #include <GeomAPI_Edge.h>
  24 #include <GeomAPI_Lin.h>
  25 #include <GeomAPI_Pnt.h>
  26 #include <GeomAPI_Pnt2d.h>
  27 #include <GeomAlgoAPI_EdgeBuilder.h>
  28 #include <GeomDataAPI_Point2D.h>
  29
  30 #include <cmath>
  31
  32 static const double tolerance = 1.e-7;
  33
  34 SketchPlugin_Projection::SketchPlugin_Projection()
  35     : SketchPlugin_SketchEntity(),
  36       myIsComputing(false)
  37 {
  38 }
  39
  40 void SketchPlugin_Projection::initDerivedClassAttributes()
  41 {
  42   data()->addAttribute(EXTERNAL_FEATURE_ID(), ModelAPI_AttributeSelection::typeId());
  43   data()->addAttribute(PROJECTED_FEATURE_ID(), ModelAPI_AttributeRefAttr::typeId());
  44   data()->attribute(PROJECTED_FEATURE_ID())->setIsArgument(false);
  45
  46   data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
  47   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
  48
  49   ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), AUXILIARY_ID());
  50 }
  51
  52 void SketchPlugin_Projection::execute()
  53 {
  54   AttributeRefAttrPtr aRefAttr = data()->refattr(PROJECTED_FEATURE_ID());
  55   if (!aRefAttr || !aRefAttr->isInitialized())
  56     return;
  57   FeaturePtr aProjection = ModelAPI_Feature::feature(aRefAttr->object());
  58
  59   if (!lastResult().get()) {
  60     ResultConstructionPtr aConstr = document()->createConstruction(data());
  61     aConstr->setShape(aProjection->lastResult()->shape());
  62     aConstr->setIsInHistory(false);
  63     setResult(aConstr);
  64
  65     aProjection->selection(EXTERNAL_ID())->setValue(lastResult(), lastResult()->shape());
  66   }
  67 }
  68
  69 void SketchPlugin_Projection::move(double theDeltaX, double theDeltaY)
  70 {
  71   // feature cannot be moved
  72 }
  73
  74 void SketchPlugin_Projection::attributeChanged(const std::string& theID)
  75 {
  76   if ((theID == EXTERNAL_FEATURE_ID() || theID == EXTERNAL_ID()) && !myIsComputing) {
  77     myIsComputing = true;
  78     computeProjection(theID);
  79     myIsComputing = false;
  80   }
  81 }
  82
  83 void SketchPlugin_Projection::computeProjection(const std::string& theID)
  84 {
  85   AttributeSelectionPtr aExtFeature =
  86       std::dynamic_pointer_cast<ModelAPI_AttributeSelection>(attribute(EXTERNAL_FEATURE_ID()));
  87
  88   std::shared_ptr<GeomAPI_Edge> anEdge;
  89   if (aExtFeature && aExtFeature->value() && aExtFeature->value()->isEdge()) {
  90     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aExtFeature->value()));
  91   } else if (aExtFeature->context() && aExtFeature->context()->shape() && aExtFeature->context()->shape()->isEdge()) {
  92     anEdge = std::shared_ptr<GeomAPI_Edge>(new GeomAPI_Edge(aExtFeature->context()->shape()));
  93   }
  94   if (!anEdge.get())
  95     return;
  96
  97   AttributeRefAttrPtr aRefAttr = data()->refattr(PROJECTED_FEATURE_ID());
  98   FeaturePtr aProjection;
  99   if (aRefAttr && aRefAttr->isInitialized())
 100     aProjection = ModelAPI_Feature::feature(aRefAttr->object());
 101
 102   // if the type of feature differs with already selected, remove it and create once again
 103   bool hasPrevProj = aProjection.get() != 0;
 104   if (hasPrevProj) {
 105     if ((anEdge->isLine() && aProjection->getKind() != SketchPlugin_Line::ID()) ||
 106         (anEdge->isCircle() && aProjection->getKind() != SketchPlugin_Circle::ID()) ||
 107         (anEdge->isArc() && aProjection->getKind() != SketchPlugin_Arc::ID())) {
 108       DocumentPtr aDoc = sketch()->document();
 109       aDoc->removeFeature(aProjection);
 110       aProjection = FeaturePtr();
 111       aRefAttr->setObject(aProjection);
 112     }
 113   }
 114
 115   std::shared_ptr<GeomAPI_Pln> aSketchPlane = sketch()->plane();
 116
 117   if (anEdge->isLine()) {
 118     std::shared_ptr<GeomAPI_Pnt> aFirst = aSketchPlane->project(anEdge->firstPoint());
 119     std::shared_ptr<GeomAPI_Pnt> aLast = aSketchPlane->project(anEdge->lastPoint());
 120
 121     std::shared_ptr<GeomAPI_Pnt2d> aFirstInSketch = sketch()->to2D(aFirst);
 122     std::shared_ptr<GeomAPI_Pnt2d> aLastInSketch = sketch()->to2D(aLast);
 123     if (aFirstInSketch->distance(aLastInSketch) < tolerance)
 124       return; // line is semi-orthogonal to the sketch plane
 125
 126     if (!hasPrevProj)
 127       aProjection = sketch()->addFeature(SketchPlugin_Line::ID());
 128
 129     // update attributes of projection
 130     std::shared_ptr<GeomDataAPI_Point2D> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 131         aProjection->attribute(SketchPlugin_Line::START_ID()));
 132     std::shared_ptr<GeomDataAPI_Point2D> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 133         aProjection->attribute(SketchPlugin_Line::END_ID()));
 134     aStartPnt->setValue(aFirstInSketch);
 135     aEndPnt->setValue(aLastInSketch);
 136   }
 137   else if (anEdge->isCircle()) {
 138     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
 139     double aRadius = aCircle->radius();
 140
 141     std::shared_ptr<GeomAPI_Pnt> aCenter = aSketchPlane->project(aCircle->center());
 142     std::shared_ptr<GeomAPI_Pnt2d> aCenterInSketch = sketch()->to2D(aCenter);
 143
 144     if (!hasPrevProj)
 145       aProjection = sketch()->addFeature(SketchPlugin_Circle::ID());
 146
 147     // update attributes of projection
 148     std::shared_ptr<GeomDataAPI_Point2D> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 149         aProjection->attribute(SketchPlugin_Circle::CENTER_ID()));
 150     aCenterPnt->setValue(aCenterInSketch);
 151     aProjection->real(SketchPlugin_Circle::RADIUS_ID())->setValue(aRadius);
 152   }
 153   else if (anEdge->isArc()) {
 154     std::shared_ptr<GeomAPI_Pnt> aFirst = aSketchPlane->project(anEdge->firstPoint());
 155     std::shared_ptr<GeomAPI_Pnt> aLast = aSketchPlane->project(anEdge->lastPoint());
 156     std::shared_ptr<GeomAPI_Pnt2d> aFirstInSketch = sketch()->to2D(aFirst);
 157     std::shared_ptr<GeomAPI_Pnt2d> aLastInSketch = sketch()->to2D(aLast);
 158
 159     std::shared_ptr<GeomAPI_Circ> aCircle = anEdge->circle();
 160     std::shared_ptr<GeomAPI_Pnt> aCenter = aSketchPlane->project(aCircle->center());
 161     std::shared_ptr<GeomAPI_Pnt2d> aCenterInSketch = sketch()->to2D(aCenter);
 162
 163     if (!hasPrevProj)
 164       aProjection = sketch()->addFeature(SketchPlugin_Arc::ID());
 165
 166     // update attributes of projection
 167     std::shared_ptr<GeomDataAPI_Point2D> aCenterPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 168         aProjection->attribute(SketchPlugin_Arc::CENTER_ID()));
 169     std::shared_ptr<GeomDataAPI_Point2D> aStartPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 170         aProjection->attribute(SketchPlugin_Arc::START_ID()));
 171     std::shared_ptr<GeomDataAPI_Point2D> aEndPnt = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
 172         aProjection->attribute(SketchPlugin_Arc::END_ID()));
 173     aStartPnt->setValue(aFirstInSketch);
 174     aEndPnt->setValue(aLastInSketch);
 175     aCenterPnt->setValue(aCenterInSketch);
 176   }
 177
 178   aProjection->execute();
 179   aRefAttr->setObject(aProjection);
 180
 181   if (!hasPrevProj) {
 182     FeaturePtr aFixed = sketch()->addFeature(SketchPlugin_ConstraintRigid::ID());
 183     aFixed->refattr(SketchPlugin_Constraint::ENTITY_A())->setObject(aProjection->lastResult());
 184     aFixed->execute();
 185   }
 186
 187   if (theID == EXTERNAL_FEATURE_ID())
 188     selection(EXTERNAL_ID())->setValue(aExtFeature->context(), aExtFeature->context()->shape());
 189 }