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License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
136 lines
5.0 KiB
C++
136 lines
5.0 KiB
C++
// Created on: 2013-05-20
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// Created by: Vlad ROMASHKO
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// Copyright (c) 2003-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _ANAFILLETALGO_H_
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#define _ANAFILLETALGO_H_
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#include <TopoDS_Wire.hxx>
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#include <TopoDS_Edge.hxx>
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#include <gp_Pln.hxx>
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//! An analytical algorithm for calculation of the fillets.
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//! It is implemented for segments and arcs of circle only.
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class ChFi2d_AnaFilletAlgo
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{
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public:
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//! An empty constructor.
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//! Use the method Init() to initialize the class.
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Standard_EXPORT ChFi2d_AnaFilletAlgo();
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//! A constructor.
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//! It expects a wire consisting of two edges of type (any combination of):
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//! - segment
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//! - arc of circle.
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Standard_EXPORT ChFi2d_AnaFilletAlgo(const TopoDS_Wire& theWire,
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const gp_Pln& thePlane);
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//! A constructor.
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//! It expects two edges having a common point of type:
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//! - segment
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//! - arc of circle.
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Standard_EXPORT ChFi2d_AnaFilletAlgo(const TopoDS_Edge& theEdge1,
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const TopoDS_Edge& theEdge2,
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const gp_Pln& thePlane);
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//! Initializes the class by a wire consisting of two edges.
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Standard_EXPORT void Init(const TopoDS_Wire& theWire, const gp_Pln& thePlane);
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//! Initializes the class by two edges.
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Standard_EXPORT void Init(const TopoDS_Edge& theEdge1, const TopoDS_Edge& theEdge2,
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const gp_Pln& thePlane);
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//! Calculates a fillet.
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Standard_EXPORT Standard_Boolean Perform(const Standard_Real radius);
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//! Retrieves a result (fillet and shrinked neighbours).
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Standard_EXPORT const TopoDS_Edge& Result(TopoDS_Edge& e1, TopoDS_Edge& e2);
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private:
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// WW5 method to compute fillet.
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// It returns a constructed fillet definition:
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// center point (xc, yc)
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// point on the 1st segment (xstart, ystart)
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// point on the 2nd segment (xend, yend)
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// is the arc of fillet clockwise (cw = true) or counterclockwise (cw = false).
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Standard_Boolean SegmentFilletSegment(const Standard_Real radius,
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Standard_Real& xc, Standard_Real& yc,
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Standard_Boolean& cw,
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Standard_Real& start, Standard_Real& end);
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// A function constructs a fillet between a segment and an arc.
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Standard_Boolean SegmentFilletArc(const Standard_Real radius,
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Standard_Real& xc, Standard_Real& yc,
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Standard_Boolean& cw,
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Standard_Real& start, Standard_Real& end,
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Standard_Real& xend, Standard_Real& yend);
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// A function constructs a fillet between an arc and a segment.
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Standard_Boolean ArcFilletSegment(const Standard_Real radius,
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Standard_Real& xc, Standard_Real& yc,
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Standard_Boolean& cw,
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Standard_Real& start, Standard_Real& end,
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Standard_Real& xstart, Standard_Real& ystart);
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// WW5 method to compute fillet: arc - arc.
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// It returns a constructed fillet definition:
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// center point (xc, yc)
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// shrinking parameter of the 1st circle (start)
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// shrinking parameter of the 2nd circle (end)
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// if the arc of fillet clockwise (cw = true) or counterclockwise (cw = false).
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Standard_Boolean ArcFilletArc(const Standard_Real radius,
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Standard_Real& xc, Standard_Real& yc,
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Standard_Boolean& cw,
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Standard_Real& start, Standard_Real& end);
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// Cuts intersecting edges of a contour.
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Standard_Boolean Cut(const gp_Pln& plane, TopoDS_Edge& e1, TopoDS_Edge& e2);
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// Plane.
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gp_Pln plane;
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// Left neighbour.
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TopoDS_Edge e1;
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Standard_Boolean segment1;
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Standard_Real x11;
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Standard_Real y11;
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Standard_Real x12;
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Standard_Real y12;
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Standard_Real xc1;
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Standard_Real yc1;
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Standard_Real radius1;
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Standard_Boolean cw1;
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// Right neighbour.
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TopoDS_Edge e2;
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Standard_Boolean segment2;
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Standard_Real x21;
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Standard_Real y21;
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Standard_Real x22;
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Standard_Real y22;
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Standard_Real xc2;
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Standard_Real yc2;
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Standard_Real radius2;
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Standard_Boolean cw2;
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// Fillet (result).
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TopoDS_Edge fillet;
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TopoDS_Edge shrinke1;
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TopoDS_Edge shrinke2;
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};
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#endif // _ANAFILLETALGO_H_
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