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// File: GeomInt_LineTool.cxx
// Created: Wed Feb 8 10:00:15 1995
// Author: Jacques GOUSSARD
// Copyright: OPEN CASCADE 1995
#include <GeomInt_LineTool.ixx>
#include <IntPatch_WLine.hxx>
#include <IntPatch_RLine.hxx>
#include <IntPatch_ALine.hxx>
#include <IntPatch_GLine.hxx>
#include <Precision.hxx>
//=======================================================================
//function : NbVertex
//purpose :
//=======================================================================
Standard_Integer GeomInt_LineTool::NbVertex(const Handle(IntPatch_Line)& L)
{
switch (L->ArcType())
{
case IntPatch_Analytic: return Handle(IntPatch_ALine)::DownCast(L)->NbVertex();
case IntPatch_Restriction: return Handle(IntPatch_RLine)::DownCast(L)->NbVertex();
case IntPatch_Walking: return Handle(IntPatch_WLine)::DownCast(L)->NbVertex();
default: break;
}
return Handle(IntPatch_GLine)::DownCast(L)->NbVertex();
}
//=======================================================================
//function : Vertex
//purpose :
//=======================================================================
const IntPatch_Point & GeomInt_LineTool::Vertex(const Handle(IntPatch_Line)& L,
const Standard_Integer I)
{
switch (L->ArcType())
{
case IntPatch_Analytic: return Handle(IntPatch_ALine)::DownCast(L)->Vertex(I);
case IntPatch_Restriction: return Handle(IntPatch_RLine)::DownCast(L)->Vertex(I);
case IntPatch_Walking: return Handle(IntPatch_WLine)::DownCast(L)->Vertex(I);
default: break;
}
return Handle(IntPatch_GLine)::DownCast(L)->Vertex(I);
}
//=======================================================================
//function : FirstParameter
//purpose :
//=======================================================================
Standard_Real GeomInt_LineTool::FirstParameter (const Handle(IntPatch_Line)& L)
{
const IntPatch_IType typl = L->ArcType();
switch (typl)
{
case IntPatch_Analytic:
{
Handle(IntPatch_ALine) alin = Handle(IntPatch_ALine)::DownCast(L);
if (alin->HasFirstPoint())
return alin->FirstPoint().ParameterOnLine();
Standard_Boolean included;
Standard_Real firstp = alin->FirstParameter(included);
if (!included)
firstp += Epsilon(firstp);
return firstp;
}
case IntPatch_Restriction:
{
Handle(IntPatch_RLine) rlin = Handle(IntPatch_RLine)::DownCast(L);
return (rlin->HasFirstPoint()? rlin->FirstPoint().ParameterOnLine() : -Precision::Infinite()); // a voir selon le type de la ligne 2d
}
case IntPatch_Walking:
{
Handle(IntPatch_WLine) wlin = Handle(IntPatch_WLine)::DownCast(L);
return (wlin->HasFirstPoint()? wlin->FirstPoint().ParameterOnLine() : 1.);
}
default:
{
Handle(IntPatch_GLine) glin = Handle(IntPatch_GLine)::DownCast(L);
if (glin->HasFirstPoint())
return glin->FirstPoint().ParameterOnLine();
switch (typl)
{
case IntPatch_Lin:
case IntPatch_Parabola:
case IntPatch_Hyperbola:
return -Precision::Infinite();
default: break;
}
}
}
return 0.0;
}
//=======================================================================
//function : LastParameter
//purpose :
//=======================================================================
Standard_Real GeomInt_LineTool::LastParameter (const Handle(IntPatch_Line)& L)
{
const IntPatch_IType typl = L->ArcType();
switch (typl)
{
case IntPatch_Analytic:
{
Handle(IntPatch_ALine) alin = Handle(IntPatch_ALine)::DownCast(L);
if (alin->HasLastPoint())
return alin->LastPoint().ParameterOnLine();
Standard_Boolean included;
Standard_Real lastp = alin->LastParameter(included);
if (!included)
lastp -=Epsilon(lastp);
return lastp;
}
case IntPatch_Restriction:
{
Handle(IntPatch_RLine) rlin = Handle(IntPatch_RLine)::DownCast(L);
return (rlin->HasLastPoint()? rlin->LastPoint().ParameterOnLine() : Precision::Infinite()); // a voir selon le type de la ligne 2d
}
case IntPatch_Walking:
{
Handle(IntPatch_WLine) wlin = Handle(IntPatch_WLine)::DownCast(L);
return (wlin->HasLastPoint()? wlin->LastPoint().ParameterOnLine() : wlin->NbPnts());
}
default:
{
Handle(IntPatch_GLine) glin = Handle(IntPatch_GLine)::DownCast(L);
if (glin->HasLastPoint())
return glin->LastPoint().ParameterOnLine();
switch (typl)
{
case IntPatch_Lin:
case IntPatch_Parabola:
case IntPatch_Hyperbola:
return Precision::Infinite();
case IntPatch_Circle:
case IntPatch_Ellipse:
return 2.*PI;
default: break;
}
}
}
return 0.0;
}
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