// Created on: 1994-10-03
// Created by: Arnaud BOUZY
// Copyright (c) 1994-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _DsgPrs_HeaderFile
#define _DsgPrs_HeaderFile

#include <DsgPrs_ArrowSide.hxx>
#include <gp_Dir.hxx>
#include <gp_Pnt.hxx>
#include <Prs3d_Presentation.hxx>

class Geom_Curve;
class Geom_Surface;
class Prs3d_DimensionAspect;

//! Describes Standard Presentations for DsgIHM objects
class DsgPrs 
{
public:

  DEFINE_STANDARD_ALLOC

  //! draws symbols ((one or two) arrows,(one or two)points
  //! at thebeginning and at the end of the dimension
  Standard_EXPORT static void ComputeSymbol (const Handle(Prs3d_Presentation)& aPresentation, const Handle(Prs3d_DimensionAspect)& anAspect, const gp_Pnt& pt1, const gp_Pnt& pt2, const gp_Dir& dir1, const gp_Dir& dir2, const DsgPrs_ArrowSide ArrowSide, const Standard_Boolean drawFromCenter = Standard_True);
  
  Standard_EXPORT static void ComputePlanarFacesLengthPresentation (const Standard_Real FirstArrowLength, const Standard_Real SecondArrowLength, const gp_Pnt& AttachmentPoint1, const gp_Pnt& AttachmentPoint2, const gp_Dir& DirAttach, const gp_Pnt& OffsetPoint, const gp_Pln& PlaneOfFaces, gp_Pnt& EndOfArrow1, gp_Pnt& EndOfArrow2, gp_Dir& DirOfArrow1);
  
  Standard_EXPORT static void ComputeCurvilinearFacesLengthPresentation (const Standard_Real FirstArrowLength, const Standard_Real SecondArrowLength, const Handle(Geom_Surface)& SecondSurf, const gp_Pnt& AttachmentPoint1, const gp_Pnt& AttachmentPoint2, const gp_Dir& DirAttach, gp_Pnt& EndOfArrow2, gp_Dir& DirOfArrow1, Handle(Geom_Curve)& VCurve, Handle(Geom_Curve)& UCurve, Standard_Real& FirstU, Standard_Real& deltaU, Standard_Real& FirstV, Standard_Real& deltaV);
  
  Standard_EXPORT static void ComputeFacesAnglePresentation (const Standard_Real ArrowLength, const Standard_Real Value, const gp_Pnt& CenterPoint, const gp_Pnt& AttachmentPoint1, const gp_Pnt& AttachmentPoint2, const gp_Dir& dir1, const gp_Dir& dir2, const gp_Dir& axisdir, const Standard_Boolean isPlane, const gp_Ax1& AxisOfSurf, const gp_Pnt& OffsetPoint, gp_Circ& AngleCirc, Standard_Real& FirstParAngleCirc, Standard_Real& LastParAngleCirc, gp_Pnt& EndOfArrow1, gp_Pnt& EndOfArrow2, gp_Dir& DirOfArrow1, gp_Dir& DirOfArrow2, gp_Pnt& ProjAttachPoint2, gp_Circ& AttachCirc, Standard_Real& FirstParAttachCirc, Standard_Real& LastParAttachCirc);
  
  Standard_EXPORT static void ComputeRadiusLine (const gp_Pnt& aCenter, const gp_Pnt& anEndOfArrow, const gp_Pnt& aPosition, const Standard_Boolean drawFromCenter, gp_Pnt& aRadLineOrign, gp_Pnt& aRadLineEnd);
  
  //! computes Geometry for  fillet radius  presentation;
  //! special case flag  SpecCase equal Standard_True if
  //! radius of  fillet circle  =  0  or if  anngle between
  //! Vec1(Center, FirstPoint)  and Vec2(Center,SecondPoint) equal 0 or PI
  Standard_EXPORT static void ComputeFilletRadiusPresentation (const Standard_Real ArrowLength, const Standard_Real Value, const gp_Pnt& Position, const gp_Dir& NormalDir, const gp_Pnt& FirstPoint, const gp_Pnt& SecondPoint, const gp_Pnt& Center, const gp_Pnt& BasePnt, const Standard_Boolean drawRevers, Standard_Boolean& SpecCase, gp_Circ& FilletCirc, Standard_Real& FirstParCirc, Standard_Real& LastParCirc, gp_Pnt& EndOfArrow, gp_Dir& DirOfArrow, gp_Pnt& DrawPosition);
  
  //! computes  length  of  ellipse  arc  in  parametric  units
  Standard_EXPORT static Standard_Real DistanceFromApex (const gp_Elips& elips, const gp_Pnt& Apex, const Standard_Real par);

};

#endif // _DsgPrs_HeaderFile