00001 //------------------------------------------------------------------------------ 00002 // This file is part of the OpenStructure project <www.openstructure.org> 00003 // 00004 // Copyright (C) 2008-2010 by the OpenStructure authors 00005 // 00006 // This library is free software; you can redistribute it and/or modify it under 00007 // the terms of the GNU Lesser General Public License as published by the Free 00008 // Software Foundation; either version 3.0 of the License, or (at your option) 00009 // any later version. 00010 // This library is distributed in the hope that it will be useful, but WITHOUT 00011 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00012 // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 00013 // details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public License 00016 // along with this library; if not, write to the Free Software Foundation, Inc., 00017 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00018 //------------------------------------------------------------------------------ 00019 #ifndef OST_GFX_GRADIENT_HH 00020 #define OST_GFX_GRADIENT_HH 00021 00022 /* 00023 Author: Marco Biasini 00024 */ 00025 00026 #include <vector> 00027 00028 #include "color.hh" 00029 00030 #include <ost/info/info.hh> 00031 #include <ost/info/info_fw.hh> 00032 00033 00034 namespace ost { namespace gfx { 00035 00036 00037 struct Stop { 00038 Stop(): t(0.0) {} 00039 00040 Stop(float tt, const Color& c): t(tt), color(c) {} 00041 float t; 00042 Color color; 00043 00044 Color GetColor(){ 00045 return color; 00046 } 00047 00048 float GetRel(){ 00049 return t; 00050 } 00051 00052 bool operator==(const Stop& ref) const 00053 { 00054 return t==ref.t && color==ref.color; 00055 } 00056 00057 }; 00058 00059 00060 typedef std::vector<Stop> StopList; 00061 00062 00070 class DLLEXPORT_OST_GFX Gradient { 00071 00072 public: 00073 Gradient(); 00075 Color GetColorAt(float t) const; 00080 void SetColorAt(float t, const Color& color); 00081 00083 void GradientToInfo(info::InfoGroup& group) const; 00084 00086 StopList GetStops() const; 00087 00089 static gfx::Gradient GradientFromInfo(const info::InfoGroup& group); 00090 private: 00091 std::vector<Stop> stops_; 00092 00093 }; 00094 00095 00099 }} 00100 00101 #endif
1.5.8