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// File: DsgPrs_ConcentricPresentation.cxx
// Created: Mon Mar 18 16:40:07 1996
// Author: Flore Lantheaume
// <fla@filax>
#include <DsgPrs_ConcentricPresentation.ixx>
#include <Graphic3d_Group.hxx>
#include <Graphic3d_Array1OfVertex.hxx>
#include <Prs3d_LengthAspect.hxx>
#include <Prs3d_Root.hxx>
#include <Prs3d_LineAspect.hxx>
#include <gp_Circ.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <gp_Vec.hxx>
#include <ElCLib.hxx>
void DsgPrs_ConcentricPresentation::Add(
const Handle(Prs3d_Presentation)& aPresentation,
const Handle(Prs3d_Drawer)& aDrawer,
const gp_Pnt& aCenter,
const Standard_Real aRadius,
const gp_Dir& aNorm,
const gp_Pnt& aPoint)
{
Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
//Creation et discretisation du plus gros cercle
gp_Circ Circ(gp_Ax2(aCenter,aNorm), aRadius);
Standard_Integer nbp = 50;
Standard_Real dteta = (2 * PI)/nbp;
Graphic3d_Array1OfVertex V(1,nbp+1);
gp_Pnt ptcur;
Standard_Real ucur = 0;
Standard_Integer i ;
for ( i = 1; i<=nbp; i++) {
ptcur = ElCLib::Value(ucur, Circ);
V(i).SetCoord(ptcur.X(), ptcur.Y(),ptcur.Z());
ucur = ucur + dteta;
}
V(nbp+1).SetCoord( V(1).X(), V(1).Y(), V(1).Z());
Prs3d_Root::CurrentGroup(aPresentation)
->SetPrimitivesAspect(LA->LineAspect()->Aspect());
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
//Creation et discretisation du plus petit cercle
Circ.SetRadius(aRadius/2);
ucur = 0;
for ( i = 1; i<=nbp; i++) {
ptcur = ElCLib::Value(ucur, Circ);
V(i).SetCoord(ptcur.X(), ptcur.Y(),ptcur.Z());
ucur = ucur + dteta;
}
V(nbp+1).SetCoord( V(1).X(), V(1).Y(), V(1).Z());
Prs3d_Root::NewGroup(aPresentation);
Prs3d_Root::CurrentGroup(aPresentation)
->SetPrimitivesAspect(LA->LineAspect()->Aspect());
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
//Creation de la croix
//1er segment
gp_Dir vecnorm(aPoint.XYZ() - aCenter.XYZ() );
gp_Vec vec(vecnorm);
vec.Multiply(aRadius);
gp_Pnt p1 = aCenter.Translated(vec);
gp_Pnt p2 = aCenter.Translated(-vec);
Prs3d_Root::NewGroup(aPresentation);
Prs3d_Root::CurrentGroup(aPresentation)->
SetPrimitivesAspect(LA->LineAspect()->Aspect());
Graphic3d_Array1OfVertex VExt(1,2);
VExt(1).SetCoord(p1.X(), p1.Y(), p1.Z());
VExt(2).SetCoord(p2.X(), p2.Y(), p2.Z());
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(VExt);
//2ieme segment
vec.Cross(aNorm);
vecnorm.SetCoord(vec.X(), vec.Y(), vec.Z() );
vec.SetXYZ(vecnorm.XYZ());
vec.Multiply(aRadius);
p1 = aCenter.Translated(vec);
p2 = aCenter.Translated(-vec);
VExt(1).SetCoord(p1.X(), p1.Y(), p1.Z());
VExt(2).SetCoord(p2.X(), p2.Y(), p2.Z());
Prs3d_Root::NewGroup(aPresentation);
Prs3d_Root::CurrentGroup(aPresentation)->
SetPrimitivesAspect(LA->LineAspect()->Aspect());
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(VExt);
}
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