102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
// Created on: 1995-03-06
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// Created by: Laurent PAINNOT
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// Copyright (c) 1995-1999 Matra Datavision
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// Copyright (c) 1999-2014 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 _Poly_Triangle_HeaderFile
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#define _Poly_Triangle_HeaderFile
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#include "Standard.hxx"
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#include "Standard_DefineAlloc.hxx"
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#include "Standard_Handle.hxx"
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#include "Standard_Integer.hxx"
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#include "Standard_OutOfRange.hxx"
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//! Describes a component triangle of a triangulation (Poly_Triangulation object).
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//! A Triangle is defined by a triplet of nodes within [1, Poly_Triangulation::NbNodes()] range.
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//! Each node is an index in the table of nodes specific to an existing
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//! triangulation of a shape, and represents a point on the surface.
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class Poly_Triangle
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! Constructs a triangle and sets all indices to zero.
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Poly_Triangle() { myNodes[0] = myNodes[1] = myNodes[2] = 0; }
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//! Constructs a triangle and sets its three indices,
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//! where these node values are indices in the table of nodes specific to an existing
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//! triangulation of a shape.
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Poly_Triangle(const Standard_Integer theN1,
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const Standard_Integer theN2,
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const Standard_Integer theN3)
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{
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myNodes[0] = theN1;
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myNodes[1] = theN2;
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myNodes[2] = theN3;
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}
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//! Sets the value of the three nodes of this triangle.
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void Set(const Standard_Integer theN1, const Standard_Integer theN2, const Standard_Integer theN3)
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{
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myNodes[0] = theN1;
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myNodes[1] = theN2;
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myNodes[2] = theN3;
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}
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//! Sets the value of node with specified index of this triangle.
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//! Raises Standard_OutOfRange if index is not in 1,2,3
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void Set(const Standard_Integer theIndex, const Standard_Integer theNode)
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{
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Standard_OutOfRange_Raise_if(theIndex < 1 || theIndex > 3,
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"Poly_Triangle::Set(), invalid index");
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myNodes[theIndex - 1] = theNode;
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}
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//! Returns the node indices of this triangle.
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void Get(Standard_Integer& theN1, Standard_Integer& theN2, Standard_Integer& theN3) const
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{
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theN1 = myNodes[0];
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theN2 = myNodes[1];
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theN3 = myNodes[2];
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}
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//! Get the node of given Index.
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//! Raises OutOfRange from Standard if Index is not in 1,2,3
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Standard_Integer Value(const Standard_Integer theIndex) const
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{
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Standard_OutOfRange_Raise_if(theIndex < 1 || theIndex > 3,
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"Poly_Triangle::Value(), invalid index");
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return myNodes[theIndex - 1];
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}
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Standard_Integer operator()(const Standard_Integer Index) const { return Value(Index); }
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//! Get the node of given Index.
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//! Raises OutOfRange if Index is not in 1,2,3
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Standard_Integer& ChangeValue(const Standard_Integer theIndex)
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{
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Standard_OutOfRange_Raise_if(theIndex < 1 || theIndex > 3,
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"Poly_Triangle::ChangeValue(), invalid index");
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return myNodes[theIndex - 1];
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}
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Standard_Integer& operator()(const Standard_Integer Index) { return ChangeValue(Index); }
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protected:
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Standard_Integer myNodes[3];
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};
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#endif // _Poly_Triangle_HeaderFile
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