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occt/src/AIS/AIS_TangentRelation.hxx

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C++

// Created on: 1996-12-05
// Created by: Jean-Pierre COMBE/Odile Olivier
// Copyright (c) 1996-1999 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 _AIS_TangentRelation_HeaderFile
#define _AIS_TangentRelation_HeaderFile
#include <Standard.hxx>
#include <Standard_Type.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <Standard_Real.hxx>
#include <Standard_Integer.hxx>
#include <AIS_Relation.hxx>
#include <PrsMgr_PresentationManager3d.hxx>
#include <SelectMgr_Selection.hxx>
class TopoDS_Shape;
class Geom_Plane;
class Prs3d_Presentation;
class Prs3d_Projector;
class Geom_Transformation;
class AIS_TangentRelation;
DEFINE_STANDARD_HANDLE(AIS_TangentRelation, AIS_Relation)
//! A framework to display tangency constraints between
//! two or more Interactive Objects of the datum type.
//! The datums are normally faces or edges.
class AIS_TangentRelation : public AIS_Relation
{
public:
//! TwoFacesTangent or TwoEdgesTangent relation
//! Constructs an object to display tangency constraints.
//! This object is defined by the first shape aFShape, the
//! second shape aSShape, the plane aPlane and the index anExternRef.
//! aPlane serves as an optional axis.
//! anExternRef set to 0 indicates that there is no relation.
Standard_EXPORT AIS_TangentRelation(const TopoDS_Shape& aFShape, const TopoDS_Shape& aSShape, const Handle(Geom_Plane)& aPlane, const Standard_Integer anExternRef = 0);
//! Returns the external reference for tangency.
//! The values are as follows:
//! - 0 - there is no connection;
//! - 1 - there is a connection to the first shape;
//! - 2 - there is a connection to the second shape.
//! This reference is defined at construction time.
Standard_EXPORT Standard_Integer ExternRef();
//! Sets the external reference for tangency, aRef.
//! The values are as follows:
//! - 0 - there is no connection;
//! - 1 - there is a connection to the first shape;
//! - 2 - there is a connection to the second shape.
//! This reference is initially defined at construction time.
Standard_EXPORT void SetExternRef (const Standard_Integer aRef);
//! computes the presentation according to a point of view
//! given by <aProjector>.
//! To be Used when the associated degenerated Presentations
//! have been transformed by <aTrsf> which is not a Pure
//! Translation. The HLR Prs can't be deducted automatically
//! WARNING :<aTrsf> must be applied
//! to the object to display before computation !!!
Standard_EXPORT virtual void Compute (const Handle(Prs3d_Projector)& aProjector, const Handle(Geom_Transformation)& aTrsf, const Handle(Prs3d_Presentation)& aPresentation) Standard_OVERRIDE;
DEFINE_STANDARD_RTTI(AIS_TangentRelation,AIS_Relation)
protected:
private:
Standard_EXPORT void Compute (const Handle(PrsMgr_PresentationManager3d)& aPresentationManager, const Handle(Prs3d_Presentation)& aPresentation, const Standard_Integer aMode = 0) Standard_OVERRIDE;
Standard_EXPORT void Compute (const Handle(Prs3d_Projector)& aProjector, const Handle(Prs3d_Presentation)& aPresentation) Standard_OVERRIDE;
Standard_EXPORT void ComputeSelection (const Handle(SelectMgr_Selection)& aSelection, const Standard_Integer aMode) Standard_OVERRIDE;
Standard_EXPORT void ComputeTwoFacesTangent (const Handle(Prs3d_Presentation)& aPresentation);
Standard_EXPORT void ComputeTwoEdgesTangent (const Handle(Prs3d_Presentation)& aPresentation);
gp_Pnt myAttach;
gp_Dir myDir;
Standard_Real myLength;
Standard_Integer myExternRef;
};
#endif // _AIS_TangentRelation_HeaderFile