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 * 線形縮小フィルタヘッダ 00022 * @author Junpee 00023 */ 00024 00025 #ifndef LINEAR_MINIFICATION_FILTER_H_ 00026 #define LINEAR_MINIFICATION_FILTER_H_ 00027 00028 namespace Lamp{ 00029 00030 //------------------------------------------------------------------------------ 00031 /** 00032 * 線形縮小フィルタ 00033 */ 00034 class LinearMinificationFilter{ 00035 public: 00036 /** 00037 * 次のサイズ取得 00038 * @param nowSize 現在のサイズ 00039 * @return 次のサイズ 00040 */ 00041 static DimensionI getNextSize(const DimensionI& nowSize){ 00042 Assert((nowSize.width != 0) && (nowSize.height != 0)); 00043 Assert((nowSize.width != 1) || (nowSize.height != 1)); 00044 DimensionI result(nowSize.width / 2, nowSize.height / 2); 00045 if(result.width == 0){ result.width = 1; } 00046 if(result.height == 0){ result.height = 1; } 00047 return result; 00048 } 00049 00050 /** 00051 * フィルタ 00052 * @param source ソースイメージ 00053 * @param sourceSize ソースイメージサイズ 00054 * @param destination デスティネーションイメージ 00055 * @param destinationSize デスティネーションイメージサイズ 00056 */ 00057 static void filter( 00058 const Color3c* source, const DimensionI& sourceSize, 00059 Color3c* destination, const DimensionI destinationSize); 00060 00061 /** 00062 * フィルタ 00063 * @param source ソースイメージ 00064 * @param sourceSize ソースイメージサイズ 00065 * @param destination デスティネーションイメージ 00066 * @param destinationSize デスティネーションイメージサイズ 00067 */ 00068 static void filter( 00069 const Color4c* source, const DimensionI& sourceSize, 00070 Color4c* destination, const DimensionI destinationSize); 00071 00072 private: 00073 // コンストラクタの隠蔽 00074 LinearMinificationFilter(); 00075 00076 }; 00077 00078 //------------------------------------------------------------------------------ 00079 } // End of namespace Lamp 00080 #endif // End of LINEAR_MINIFICATION_FILTER_H_ 00081 //------------------------------------------------------------------------------ 00082