// Created on: 2014-05-22
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 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 _SelectMgr_TriangularFrustumSet_HeaderFile
#define _SelectMgr_TriangularFrustumSet_HeaderFile
#include
#include
#include
#include
typedef NCollection_List SelectMgr_TriangFrustums;
typedef NCollection_List::Iterator SelectMgr_TriangFrustumsIter;
//! This class is used to handle polyline selection. The main principle of polyline selection
//! algorithm is to split the polygon defined by polyline onto triangles. Than each of
//! them is considered as a base for triangular frustum building. In other
//! words, each triangle vertiex will be projected from 2d screen space to 3d world space
//! onto near and far view frustum planes. Thus, the projected triangles make up the bases of
//! selecting frustum. When the set of such frustums is created, the function determining
//! selection iterates through triangular frustum set and searches for overlap with any
//! frustum.
class SelectMgr_TriangularFrustumSet : public SelectMgr_BaseFrustum
{
public:
SelectMgr_TriangularFrustumSet() {};
~SelectMgr_TriangularFrustumSet() {};
//! Meshes polygon bounded by polyline. Than organizes a set of triangular frustums,
//! where each triangle's projection onto near and far view frustum planes is
//! considered as a frustum base
Standard_EXPORT virtual void Build (const TColgp_Array1OfPnt2d& thePoints) Standard_OVERRIDE;
//! Returns a copy of the frustum with all sub-volumes transformed according to the matrix given
Standard_EXPORT virtual Handle(SelectMgr_BaseFrustum) ScaleAndTransform (const Standard_Integer theScale,
const gp_GTrsf& theTrsf) const Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPnt,
const SelectMgr_Vec3& theMaxPnt,
SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPnt,
const SelectMgr_Vec3& theMaxPnt,
Standard_Boolean* theInside) Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const TColgp_Array1OfPnt& theArrayOfPnts,
Select3D_TypeOfSensitivity theSensType,
SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
const gp_Pnt& thePnt2,
SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
Standard_EXPORT virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
const gp_Pnt& thePnt2,
const gp_Pnt& thePnt3,
Select3D_TypeOfSensitivity theSensType,
SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
//! Stores plane equation coefficients (in the following form:
//! Ax + By + Cz + D = 0) to the given vector
Standard_EXPORT virtual void GetPlanes (NCollection_Vector& thePlaneEquations) const Standard_OVERRIDE;
private:
SelectMgr_TriangFrustums myFrustums;
};
#endif // _SelectMgr_TriangularFrustumSet_HeaderFile