mirror of
https://github.com/amyinspace/MagicSetEditor2.git
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twanvl
4bab20d67c
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1024 0fc631ac-6414-0410-93d0-97cfa31319b6
71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
//+----------------------------------------------------------------------------+
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//| Description: Magic Set Editor - Program to make Magic (tm) cards |
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//| Copyright: (C) 2001 - 2008 Twan van Laarhoven and "coppro" |
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//| License: GNU General Public License 2 or later (see file COPYING) |
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//+----------------------------------------------------------------------------+
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#ifndef HEADER_GFX_COLOR
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#define HEADER_GFX_COLOR
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/** @file gfx/color.hpp
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*
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* Color related functions and types.
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*/
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// ----------------------------------------------------------------------------- : Includes
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#include <util/prec.hpp>
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// ----------------------------------------------------------------------------- : Color with alpha
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/// Color with alpha channel
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class AColor : public Color {
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public:
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Byte alpha; ///< The alpha value, in the range [0..255]
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inline AColor() : alpha(0) {}
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inline AColor(Byte r, Byte g, Byte b, Byte a = 255) : Color(r,g,b), alpha(a) {}
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inline AColor(const Color& color, Byte a = 255) : Color(color), alpha(a) {}
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inline bool operator == (const AColor& that) const {
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return static_cast<const Color&>(*this) == static_cast<const Color&>(that) && alpha == that.alpha;
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}
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inline bool operator != (const AColor& that) const { return ! (*this == that); }
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};
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// ----------------------------------------------------------------------------- : Parsing
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/// Parse a color
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Color parse_color(const String& value);
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/// Parse a color with alpha
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AColor parse_acolor(const String& value);
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/// Convert an AColor to a string
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String format_acolor(AColor col);
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// ----------------------------------------------------------------------------- : Color utility functions
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inline int bot(int x) { return max(0, x); } ///< bottom range check for color values
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inline int top(int x) { return min(255, x); } ///< top range check for color values
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inline int col(int x) { return top(bot(x)); } ///< top and bottom range check for color values
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/// Linear interpolation between colors
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Color lerp(const Color& a, const Color& b, double t);
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/// Linear interpolation between colors
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AColor lerp(const AColor& a, const AColor& b, double t);
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/// convert HSL to RGB, h,s,l must be in range [0...1)
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Color hsl2rgb(double h, double s, double l);
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/// A darker version of a color
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Color darken(const Color& c);
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/// A saturated version of a color
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Color saturate(const Color& c, double amount);
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/// Fills an image with the specified color
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void fill_image(Image& image, const Color& color);
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// ----------------------------------------------------------------------------- : EOF
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#endif
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