/usr/include/oce/SelectMgr_TriangularFrustum.hxx is in liboce-visualization-dev 0.18.2-2build1.
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// 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_TriangularFrustum_HeaderFile
#define _SelectMgr_TriangularFrustum_HeaderFile
#include <SelectMgr_Frustum.hxx>
//! This class contains representation of triangular selecting frustum, created in case
//! of polyline selection, and algorithms for overlap detection between selecting
//! frustum and sensitive entities.
//! Overlap detection tests are implemented according to the terms of separating axis
//! theorem (SAT).
class SelectMgr_TriangularFrustum : public SelectMgr_Frustum<3>
{
public:
//! Creates new triangular frustum with bases of triangles with vertices theP1,
//! theP2 and theP3 projections onto near and far view frustum planes
SelectMgr_TriangularFrustum() {};
~SelectMgr_TriangularFrustum();
//! Creates new triangular frustum with bases of triangles with vertices theP1, theP2 and theP3
//! projections onto near and far view frustum planes (only for triangular frustums)
virtual void Build (const gp_Pnt2d& theP1,
const gp_Pnt2d& theP2,
const gp_Pnt2d& theP3) Standard_OVERRIDE;
//! Returns a copy of the frustum transformed according to the matrix given
virtual NCollection_Handle<SelectMgr_BaseFrustum> ScaleAndTransform (const Standard_Integer theScale,
const gp_Trsf& theTrsf) Standard_OVERRIDE;
// SAT Tests for different objects
//! SAT intersection test between defined volume and given axis-aligned box
virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPnt,
const SelectMgr_Vec3& theMaxPnt,
Standard_Real& theDepth) Standard_OVERRIDE;
//! Returns true if selecting volume is overlapped by axis-aligned bounding box
//! with minimum corner at point theMinPt and maximum at point theMaxPt
virtual Standard_Boolean Overlaps (const SelectMgr_Vec3& theMinPt,
const SelectMgr_Vec3& theMaxPt,
Standard_Boolean* theInside) Standard_OVERRIDE;
//! Intersection test between defined volume and given point
virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt,
Standard_Real& theDepth) Standard_OVERRIDE;
//! SAT intersection test between defined volume and given ordered set of points,
//! representing line segments. The test may be considered of interior part or
//! boundary line defined by segments depending on given sensitivity type
virtual Standard_Boolean Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPnts,
Select3D_TypeOfSensitivity theSensType,
Standard_Real& theDepth) Standard_OVERRIDE;
//! Checks if line segment overlaps selecting frustum
virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
const gp_Pnt& thePnt2,
Standard_Real& theDepth) Standard_OVERRIDE;
//! SAT intersection test between defined volume and given triangle. The test may
//! be considered of interior part or boundary line defined by triangle vertices
//! depending on given sensitivity type
virtual Standard_Boolean Overlaps (const gp_Pnt& thePnt1,
const gp_Pnt& thePnt2,
const gp_Pnt& thePnt3,
Select3D_TypeOfSensitivity theSensType,
Standard_Real& theDepth) Standard_OVERRIDE;
//! Nullifies the handle to corresponding builder instance to prevent memory leaks
void Clear();
private:
void cacheVertexProjections (SelectMgr_TriangularFrustum* theFrustum);
};
#endif // _SelectMgr_TriangularFrustum_HeaderFile
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