Color.cpp

00001 
00002 //
00003 // SFML - Simple and Fast Multimedia Library
00004 // Copyright (C) 2007 Laurent Gomila (laurent.gom@gmail.com)
00005 //
00006 // This software is provided 'as-is', without any express or implied warranty.
00007 // In no event will the authors be held liable for any damages arising from the use of this software.
00008 //
00009 // Permission is granted to anyone to use this software for any purpose,
00010 // including commercial applications, and to alter it and redistribute it freely,
00011 // subject to the following restrictions:
00012 //
00013 // 1. The origin of this software must not be misrepresented;
00014 //    you must not claim that you wrote the original software.
00015 //    If you use this software in a product, an acknowledgment
00016 //    in the product documentation would be appreciated but is not required.
00017 //
00018 // 2. Altered source versions must be plainly marked as such,
00019 //    and must not be misrepresented as being the original software.
00020 //
00021 // 3. This notice may not be removed or altered from any source distribution.
00022 //
00024 
00026 // Headers
00028 #include <SFML/Graphics/Color.h>
00029 #include <SFML/Internal.h>
00030 #include <algorithm>
00031 
00032 
00036 sfColor sfBlack   = {  0,   0,   0, 255};
00037 sfColor sfWhite   = {255, 255, 255, 255};
00038 sfColor sfRed     = {255,   0,   0, 255};
00039 sfColor sfGreen   = {  0, 255,   0, 255};
00040 sfColor sfBlue    = {  0,   0, 255, 255};
00041 sfColor sfYellow  = {255, 255,   0, 255};
00042 sfColor sfMagenta = {255,   0, 255, 255};
00043 sfColor sfCyan    = {  0, 255, 255, 255};
00044 
00045 
00049 sfColor sfColor_FromRGB(sfUint8 R, sfUint8 G, sfUint8 B)
00050 {
00051     return sfColor_FromRGBA(R, G, B, 255);
00052 }
00053 
00054 
00058 sfColor sfColor_FromRGBA(sfUint8 R, sfUint8 G, sfUint8 B, sfUint8 A)
00059 {
00060     sfColor Color;
00061 
00062     Color.r = R;
00063     Color.g = G;
00064     Color.b = B;
00065     Color.a = A;
00066 
00067     return Color;
00068 }
00069 
00070 
00074 sfColor sfColor_Add(sfColor Color1, sfColor Color2)
00075 {
00076     int R = std::min(Color1.r + Color2.r, 255);
00077     int G = std::min(Color1.g + Color2.g, 255);
00078     int B = std::min(Color1.b + Color2.b, 255);
00079     int A = std::min(Color1.a + Color2.a, 255);
00080 
00081     return sfColor_FromRGBA(static_cast<sfUint8>(R), static_cast<sfUint8>(G), static_cast<sfUint8>(B), static_cast<sfUint8>(A));
00082 }
00083 
00084 
00088 sfColor sfColor_Modulate(sfColor Color1, sfColor Color2)
00089 {
00090     int R = Color1.r * Color2.r / 255;
00091     int G = Color1.g * Color2.g / 255;
00092     int B = Color1.b * Color2.b / 255;
00093     int A = Color1.a * Color2.a / 255;
00094 
00095     return sfColor_FromRGBA(static_cast<sfUint8>(R), static_cast<sfUint8>(G), static_cast<sfUint8>(B), static_cast<sfUint8>(A));
00096 }