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RayIntersection.h

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00001 //------------------------------------------------------------------------------
00002 // Lamp : Open source game middleware
00003 // Copyright (C) 2004  Junpei Ohtani ( Email : junpee@users.sourceforge.jp )
00004 //
00005 // This library is free software; you can redistribute it and/or
00006 // modify it under the terms of the GNU Lesser General Public
00007 // License as published by the Free Software Foundation; either
00008 // version 2.1 of the License, or (at your option) any later version.
00009 //
00010 // This library is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 // Lesser General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU Lesser General Public
00016 // License along with this library; if not, write to the Free Software
00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00018 //------------------------------------------------------------------------------
00019 
00020 /** @file
00021  * レイ交差ヘッダ
00022  * @author Junpee
00023  */
00024 
00025 #ifndef RAY_INTERSECTION_H_
00026 #define RAY_INTERSECTION_H_
00027 
00028 namespace Lamp{
00029 
00030 class Ray;
00031 class Segment;
00032 class Sphere;
00033 class Triangle;
00034 
00035 //------------------------------------------------------------------------------
00036 /**
00037  * レイ交差
00038  */
00039 class RayIntersection{
00040 public:
00041     //--------------------------------------------------------------------------
00042     // 点
00043     //--------------------------------------------------------------------------
00044     /**
00045      * 点交差
00046      * @param ray レイ
00047      * @param point 点
00048      * @param range 交差範囲
00049      * @return 交差していればtrue
00050      */
00051     static bool intersect(const Ray& ray, const Vector3& point,
00052         float range = Math::epsilon);
00053 
00054     //--------------------------------------------------------------------------
00055     // レイ
00056     //--------------------------------------------------------------------------
00057     /**
00058      * 交差
00059      * @param ray0 レイ
00060      * @param ray1 レイ
00061      * @param range 交差範囲
00062      * @return 交差していればtrue
00063      */
00064     static bool intersect(const Ray& ray0, const Ray& ray1,
00065         float range = Math::epsilon);
00066 
00067     //--------------------------------------------------------------------------
00068     // セグメント
00069     //--------------------------------------------------------------------------
00070     /**
00071      * セグメント交差
00072      * @param ray レイ
00073      * @param segment セグメント
00074      * @param range 交差範囲
00075      * @return 交差していればtrue
00076      */
00077     static bool intersect(const Ray& ray, const Segment& segment,
00078         float range = Math::epsilon);
00079 
00080     //--------------------------------------------------------------------------
00081     // 球
00082     //--------------------------------------------------------------------------
00083     /**
00084      * 球交差
00085      * @param ray レイ
00086      * @param sphere 球
00087      * @return 交差していればtrue
00088      */
00089     static bool intersect(const Ray& ray, const Sphere& sphere);
00090 
00091     //--------------------------------------------------------------------------
00092     // 三角
00093     //--------------------------------------------------------------------------
00094     /**
00095      * 三角交差
00096      * @param ray レイ
00097      * @param triangle 三角
00098      * @return 交差していればtrue
00099      */
00100     static bool intersect(const Ray& ray, const Triangle& triangle);
00101 
00102 private:
00103     //--------------------------------------------------------------------------
00104     // コンストラクタの隠蔽
00105     RayIntersection();
00106 
00107 };
00108 
00109 //------------------------------------------------------------------------------
00110 } // End of namespace Lamp
00111 #endif // End of RAY_INTERSECTION_H_
00112 //------------------------------------------------------------------------------

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