src/SketchPlugin/SketchPlugin_Circle.cpp

   1 // File:        SketchPlugin_Circle.cpp
   2 // Created:     26 May 2014
   3 // Author:      Artem ZHIDKOV
   4
   5 #include "SketchPlugin_Circle.h"
   6 #include "SketchPlugin_Sketch.h"
   7 #include <ModelAPI_Data.h>
   8
   9 #include <GeomDataAPI_Point2D.h>
  10 #include <GeomDataAPI_Dir.h>
  11
  12 #include <GeomAlgoAPI_PointBuilder.h>
  13 #include <GeomAlgoAPI_EdgeBuilder.h>
  14 #include <GeomAlgoAPI_CompoundBuilder.h>
  15
  16 #include <ModelAPI_AttributeDouble.h>
  17
  18 SketchPlugin_Circle::SketchPlugin_Circle()
  19   : SketchPlugin_Feature()
  20 {
  21 }
  22
  23 void SketchPlugin_Circle::initAttributes()
  24 {
  25   data()->addAttribute(CIRCLE_ATTR_CENTER, GeomDataAPI_Point2D::type());
  26   data()->addAttribute(CIRCLE_ATTR_RADIUS, ModelAPI_AttributeDouble::type());
  27 }
  28
  29 void SketchPlugin_Circle::execute()
  30 {
  31 }
  32
  33 const boost::shared_ptr<GeomAPI_Shape>& SketchPlugin_Circle::preview()
  34 {
  35   SketchPlugin_Sketch* aSketch = sketch();
  36   if (aSketch) {
  37     std::list<boost::shared_ptr<GeomAPI_Shape> > aShapes;
  38
  39     // compute a circle point in 3D view
  40     boost::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
  41       boost::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(CIRCLE_ATTR_CENTER));
  42     boost::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
  43     // make a visible point
  44     boost::shared_ptr<GeomAPI_Shape> aCenterPointShape = GeomAlgoAPI_PointBuilder::point(aCenter);
  45     aShapes.push_back(aCenterPointShape);
  46
  47     // make a visible circle
  48     boost::shared_ptr<GeomDataAPI_Dir> aNDir =
  49       boost::dynamic_pointer_cast<GeomDataAPI_Dir>(aSketch->data()->attribute(SKETCH_ATTR_NORM));
  50     bool aHasPlane = aNDir && !(aNDir->x() == 0 && aNDir->y() == 0 && aNDir->z() == 0);
  51     if (aHasPlane) {
  52       boost::shared_ptr<GeomAPI_Dir> aNormal(new GeomAPI_Dir(aNDir->x(), aNDir->y(), aNDir->z()));
  53       // compute the circle radius
  54       boost::shared_ptr<ModelAPI_AttributeDouble> aRadiusAttr =
  55         boost::dynamic_pointer_cast<ModelAPI_AttributeDouble>(data()->attribute(CIRCLE_ATTR_RADIUS));
  56       double aRadius = aRadiusAttr->value();
  57
  58       boost::shared_ptr<GeomAPI_Shape> aCircleShape =
  59                               GeomAlgoAPI_EdgeBuilder::lineCircle(aCenter, aNormal, aRadius);
  60       aShapes.push_back(aCircleShape);
  61     }
  62     boost::shared_ptr<GeomAPI_Shape> aCompound = GeomAlgoAPI_CompoundBuilder::compound(aShapes);
  63     setPreview(aCompound);
  64   }
  65   return getPreview();
  66 }