csgeom/tri.h Source File (Crystal Space 2.0 Public API Reference)

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csgeom/tri.h
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    00001   /*
    00002     Copyright (C) 2003 by Jorrit Tyberghein
    00003
    00004     This library is free software; you can redistribute it and/or
    00005     modify it under the terms of the GNU Library General Public
    00006     License as published by the Free Software Foundation; either
    00007     version 2 of the License, or (at your option) any later version.
    00008
    00009     This library is distributed in the hope that it will be useful,
    00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012     Library General Public License for more details.
    00013
    00014     You should have received a copy of the GNU Library General Public
    00015     License along with this library; if not, write to the Free
    00016     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00017 */
    00018
    00019 #ifndef __CS_TRIANGLE_H__
    00020 #define __CS_TRIANGLE_H__
    00021
    00029 #include "csextern.h"
    00030
    00031 namespace CS
    00032 {
    00038   template<typename T>
    00039   struct TriangleT
    00040   {
    00041 #if !defined(__STRICT_ANSI__) && !defined(SWIG)
    00042     union
    00043     {
    00044       struct
    00045       {
    00046 #endif
    00047
    00048
    00049         T a, b, c;
    00051 #if !defined(__STRICT_ANSI__) && !defined(SWIG)
    00052       };
    00054       T components[3];
    00055     };
    00056 #endif
    00057
    00059     TriangleT () {}
    00060
    00062     TriangleT (const T& _a, const T& _b, const T& _c) : a(_a), b(_b), c(_c) {}
    00063
    00065     TriangleT (const TriangleT& t)
    00066     {
    00067       a = t.a;
    00068       b = t.b;
    00069       c = t.c;
    00070     }
    00071
    00073     TriangleT& operator= (const TriangleT& t)
    00074     {
    00075       a = t.a;
    00076       b = t.b;
    00077       c = t.c;
    00078       return *this;
    00079     }
    00080
    00082     void Set (const T& _a, const T& _b, const T& _c)
    00083     {
    00084       a = _a;
    00085       b = _b;
    00086       c = _c;
    00087     }
    00088
    00090 #if defined( __STRICT_ANSI__) || defined(SWIG)
    00091     inline const T& operator[] (size_t n) const { return !n?a:n&1?b:c; }
    00092 #else
    00093     inline const T& operator[] (size_t n) const { return components[n]; }
    00094 #endif
    00095
    00097 #if defined( __STRICT_ANSI__) || defined(SWIG)
    00098     inline T& operator[] (size_t n) { return !n?a:n&1?b:c; }
    00099 #else
    00100     inline T& operator[] (size_t n) { return components[n]; }
    00101 #endif
    00102
    00103   };
    00104 }
    00105
    00111 struct csTriangle : public CS::TriangleT<int>
    00112 {
    00113   csTriangle () {}
    00114
    00116   csTriangle (int _a, int _b, int _c) : CS::TriangleT<int> (_a, _b, _c) {}
    00117
    00119   csTriangle (const CS::TriangleT<int>& t) : CS::TriangleT<int> (t) {}
    00120 };
    00121
    00124 #endif // __CS_TRIANGLE_H__
    00125