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// File: DsgPrs_EqualRadiusPresentation.cxx
// Created: Tue Jan 20 20:51:19 1998
// Author: Julia GERASIMOVA
// <jgv@orthodox.nnov.matra-dtv.fr>
#include <DsgPrs_EqualRadiusPresentation.ixx>
#include <DsgPrs.hxx>
#include <Graphic3d_Group.hxx>
#include <Prs3d_LengthAspect.hxx>
#include <Prs3d_LineAspect.hxx>
#include <Graphic3d_Array1OfVertex.hxx>
#include <Prs3d_Root.hxx>
#include <gp_Dir.hxx>
#include <gce_MakeDir.hxx>
#include <gp_Vec.hxx>
#include <gp_Pln.hxx>
#include <Precision.hxx>
#include <TCollection_ExtendedString.hxx>
#include <Prs3d_Text.hxx>
void DsgPrs_EqualRadiusPresentation::Add( const Handle( Prs3d_Presentation )& aPresentation,
const Handle( Prs3d_Drawer )& aDrawer,
const gp_Pnt& FirstCenter,
const gp_Pnt& SecondCenter,
const gp_Pnt& FirstPoint,
const gp_Pnt& SecondPoint,
const Handle( Geom_Plane )& Plane )
{
Handle( Prs3d_LengthAspect ) LA = aDrawer->LengthAspect();
Prs3d_Root::CurrentGroup( aPresentation )->SetPrimitivesAspect( LA->LineAspect()->Aspect() );
Graphic3d_Array1OfVertex VertexArray( 1, 2 );
Quantity_Length X,Y,Z;
// Radius lines
FirstCenter.Coord( X, Y, Z );
VertexArray( 1 ).SetCoord( X, Y, Z );
FirstPoint.Coord( X, Y, Z );
VertexArray( 2 ).SetCoord( X, Y, Z );
Prs3d_Root::CurrentGroup( aPresentation )->Polyline( VertexArray );
SecondCenter.Coord( X, Y, Z );
VertexArray( 1 ).SetCoord( X, Y, Z );
SecondPoint.Coord( X, Y, Z );
VertexArray( 2 ).SetCoord( X, Y, Z );
Prs3d_Root::CurrentGroup( aPresentation )->Polyline( VertexArray );
// Add presentation of arrows
gp_Dir FirstDir = gce_MakeDir( FirstCenter, FirstPoint ), SecondDir = gce_MakeDir( SecondCenter, SecondPoint );
DsgPrs::ComputeSymbol( aPresentation, LA,
FirstCenter, FirstPoint,
FirstDir.Reversed(), FirstDir,
DsgPrs_AS_FIRSTPT_LASTAR );
DsgPrs::ComputeSymbol( aPresentation, LA,
SecondCenter, SecondPoint,
SecondDir.Reversed(), SecondDir,
DsgPrs_AS_FIRSTPT_LASTAR );
// Line between two centers
FirstCenter.Coord( X, Y, Z );
VertexArray( 2 ).SetCoord( X, Y, Z );
Prs3d_Root::CurrentGroup( aPresentation )->Polyline( VertexArray );
//ota === beging ===
gp_Pnt Middle( (FirstCenter.XYZ() + SecondCenter.XYZ()) *0.5 ), aTextPos;
Standard_Real SmallDist;
//Mark of constraint
TCollection_ExtendedString aText("==");
Standard_Real Dist = FirstCenter.Distance( SecondCenter );
if (Dist > Precision::Confusion())
{
SmallDist = Dist * 0.05; // take 1/20 part of length;
if (SmallDist <= Precision::Confusion())
SmallDist = Dist;
gp_Dir LineDir = gce_MakeDir( FirstCenter, SecondCenter );
gp_Dir OrtDir = Plane->Pln().Axis().Direction() ^ LineDir;
gp_Vec OrtVec = gp_Vec( OrtDir ) * SmallDist;
//Compute the text position
aTextPos = Middle.Translated(OrtVec);
}
else
{
Standard_Real Rad = Max(FirstCenter.Distance( FirstPoint ),
SecondCenter.Distance(SecondPoint));
SmallDist = Rad *0.05; // take 1/20 part of length;
if (SmallDist <= Precision::Confusion())
SmallDist = Rad;
gp_Vec aVec(SmallDist, SmallDist, SmallDist);
//Compute the text position
aTextPos = FirstCenter.Translated(aVec);
}
//Draw the text
Prs3d_Text::Draw(aPresentation,LA->TextAspect(),aText, aTextPos);
//ota === end ===
}
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