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color_quantizer.h
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70 lines (60 loc) · 1.91 KB
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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef GRAPHICS_COLOR_QUANTIZER_H
#define GRAPHICS_COLOR_QUANTIZER_H
namespace Graphics {
class Octree;
class Palette;
/**
* @brief Class for selecting a good palette from a large number of colors.
*
* Colors are added one by one, after which a palette with at most maxColors
* entries can be retrieved. The caller is responsible for freeing the palette
* afterwards.
*/
class ColorQuantizer {
private:
Octree *_octree = nullptr;
public:
/**
* @brief Construct a new ColorQuantizer object
*
* @param maxColors the maximum number of colors in the final palette
*/
ColorQuantizer(int maxColors);
~ColorQuantizer();
/**
* @brief Add a single color to the quantizer
*
* @param r the R component of the color
* @param g the G component of the color
* @param b the B component of the color
*/
void addColor(byte r, byte g, byte b);
/**
* @brief Retrieve the resulting palette from the quantizer.
*
* @return A Palette object with at most maxColor entries.
*/
Palette *getPalette();
};
} // End of namespace Graphics
#endif