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RayDistance.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  * レイ距離ヘッダ
00022  * @author Junpee
00023  */
00024 
00025 #ifndef RAY_DISTANCE_H_
00026 #define RAY_DISTANCE_H_
00027 
00028 namespace Lamp{
00029 
00030 class Ray;
00031 class Segment;
00032 class Sphere;
00033 class Triangle;
00034 
00035 //------------------------------------------------------------------------------
00036 /**
00037  * レイ距離
00038  */
00039 class RayDistance{
00040 public:
00041     //--------------------------------------------------------------------------
00042     // 点
00043     //--------------------------------------------------------------------------
00044     /**
00045      * 点距離の二乗
00046      * @param ray レイ
00047      * @param point 点
00048      * @return 距離の二乗
00049      */
00050     static float squaredDistance(const Ray& ray, const Vector3& point);
00051 
00052     //--------------------------------------------------------------------------
00053     // レイ
00054     //--------------------------------------------------------------------------
00055     /**
00056      * 距離の二乗
00057      * @param ray0 レイ
00058      * @param ray1 レイ
00059      * @return 距離の二乗
00060      */
00061     static float squaredDistance(const Ray& ray0, const Ray& ray1);
00062 
00063     //--------------------------------------------------------------------------
00064     // セグメント
00065     //--------------------------------------------------------------------------
00066     /**
00067      * セグメント距離の二乗
00068      * @param ray レイ
00069      * @param segment セグメント
00070      * @return 距離の二乗
00071      */
00072     static float squaredDistance(const Ray& ray, const Segment& segment);
00073 
00074     //--------------------------------------------------------------------------
00075     // 球
00076     //--------------------------------------------------------------------------
00077     /**
00078      * 球距離の二乗
00079      * @param ray レイ
00080      * @param sphere 球
00081      * @return 距離の二乗
00082      */
00083     static float squaredDistance(const Ray& ray, const Sphere& sphere);
00084 
00085     //--------------------------------------------------------------------------
00086     // 三角
00087     //--------------------------------------------------------------------------
00088     /**
00089      * 三角距離の二乗
00090      * @param ray レイ
00091      * @param triangle 三角
00092      * @return 距離の二乗
00093      */
00094     static float squaredDistance(const Ray& ray, const Triangle& triangle);
00095 
00096 private:
00097     //--------------------------------------------------------------------------
00098     // コンストラクタの隠蔽
00099     RayDistance();
00100 
00101 };
00102 
00103 //------------------------------------------------------------------------------
00104 } // End of namespace Lamp
00105 #endif // End of RAY_DISTANCE_H_
00106 //------------------------------------------------------------------------------

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