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// File: DsgPrs_TangentPresentation.cxx
// Created: Tue Jan 16 14:29:33 1996
// Author: Jean-Pierre COMBE
// <jpi>
#include <DsgPrs_TangentPresentation.ixx>
#include <Graphic3d_Group.hxx>
#include <Graphic3d_Array1OfVertex.hxx>
#include <Prs3d_Arrow.hxx>
#include <Prs3d_ArrowAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Prs3d_LengthAspect.hxx>
#include <Graphic3d_AspectLine3d.hxx>
#include <Prs3d_PointAspect.hxx>
#include <Geom_CartesianPoint.hxx>
#include <StdPrs_Point.hxx>
#include <gp_Vec.hxx>
#include <Prs3d_Arrow.hxx>
void DsgPrs_TangentPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
const Handle(Prs3d_Drawer)& aDrawer,
const gp_Pnt& OffsetPoint,
const gp_Dir& aDirection,
const Standard_Real length)
{
gp_Vec vec(aDirection);
gp_Vec vec1 = vec.Multiplied(length);
gp_Vec vec2 = vec.Multiplied(-length);
gp_Pnt p1 = OffsetPoint.Translated(vec1);
gp_Pnt p2 = OffsetPoint.Translated(vec2);
// Aspect
Handle(Prs3d_LengthAspect) LA = aDrawer->LengthAspect();
LA->LineAspect()->SetTypeOfLine(Aspect_TOL_SOLID);
Handle(Prs3d_ArrowAspect) ARR1 = LA->Arrow1Aspect();
Handle(Prs3d_ArrowAspect) ARR2 = LA->Arrow2Aspect();
ARR1->SetLength(length/5);
ARR2->SetLength(length/5);
// Array1OfVertex
Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
Graphic3d_Array1OfVertex V(1,2);
Quantity_Length X,Y,Z;
p1.Coord(X,Y,Z);
V(1).SetCoord(X,Y,Z);
p2.Coord(X,Y,Z);
V(2).SetCoord(X,Y,Z);
Prs3d_Root::CurrentGroup(aPresentation)->Polyline(V);
// fleche 1 :
Prs3d_Root::NewGroup(aPresentation);
Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
Prs3d_Arrow::Draw(aPresentation,p1,aDirection,
LA->Arrow1Aspect()->Angle(),
LA->Arrow1Aspect()->Length());
// fleche 2
Prs3d_Root::NewGroup(aPresentation);
Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
Prs3d_Arrow::Draw(aPresentation,p2,aDirection.Reversed(),
LA->Arrow2Aspect()->Angle(),
LA->Arrow2Aspect()->Length());
}
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