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// File: DrawDim_PlanarDiameter.cxx
// Created: Wed Nov 25 11:37:21 1998
// Author: Denis PASCAL
// <dp@dingox.paris1.matra-dtv.fr>
#include <DrawDim_PlanarDiameter.ixx>
#include <Geom_Curve.hxx>
#include <Geom_Circle.hxx>
#include <gp_Pnt.hxx>
#include <gp_Circ.hxx>
#include <BRep_Tool.hxx>
#include <TCollection_AsciiString.hxx>
#include <Draw_Color.hxx>
#include <ElCLib.hxx>
#include <TopExp.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Vertex.hxx>
//=======================================================================
//function : DrawDim_PlanarDiameter
//purpose :
//=======================================================================
DrawDim_PlanarDiameter::DrawDim_PlanarDiameter(const TopoDS_Face& face, const TopoDS_Shape& c)
{
myPlane = face;
myCircle = c;
}
//=======================================================================
//function : DrawDim_PlanarDiameter
//purpose :
//=======================================================================
DrawDim_PlanarDiameter::DrawDim_PlanarDiameter(const TopoDS_Shape& c)
{
myCircle = c;
}
//=======================================================================
//function : DrawOn
//purpose :
//=======================================================================
void DrawDim_PlanarDiameter::DrawOn(Draw_Display& dis) const
{
if (myCircle.ShapeType() == TopAbs_EDGE) {
Standard_Real f,l;
Handle(Geom_Curve) curve = BRep_Tool::Curve (TopoDS::Edge(myCircle),f,l);
if (curve->IsKind(STANDARD_TYPE(Geom_Circle))) {
gp_Circ circle = Handle(Geom_Circle)::DownCast(curve)->Circ();
TopoDS_Vertex vf, vl;
TopExp::Vertices(TopoDS::Edge(myCircle),vf,vl);
const gp_Pnt first = BRep_Tool::Pnt(vf);
Standard_Real parfirst = ElCLib::Parameter(circle,first);
Standard_Real parlast = (parfirst + PI);
gp_Pnt last = ElCLib::Value(parlast,circle);
//
dis.Draw (first,last);
gp_Pnt p ((first.X()+ last.X())/2,(first.Y()+ last.Y())/2,(first.Z()+ last.Z())/2);
DrawText(p,dis);
return;
}
}
cout << " DrawDim_PlanarDiameter::DrawOn : dimension error" << endl;
}
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