mirror of
https://github.com/amyinspace/MagicSetEditor2.git
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twanvl
a2e709d86b
git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@275 0fc631ac-6414-0410-93d0-97cfa31319b6
32 lines
1.2 KiB
C++
32 lines
1.2 KiB
C++
//+----------------------------------------------------------------------------+
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//| Description: Magic Set Editor - Program to make Magic (tm) cards |
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//| Copyright: (C) 2001 - 2007 Twan van Laarhoven |
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//| License: GNU General Public License 2 or later (see file COPYING) |
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//+----------------------------------------------------------------------------+
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// ----------------------------------------------------------------------------- : Includes
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#include <gfx/gfx.hpp>
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#include <util/error.hpp>
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// ----------------------------------------------------------------------------- : Saturation
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void saturate(Image& image, int amount) {
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if (amount == 0) return; // nothing to do
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int factor = 300 / amount;
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int div = factor - 2;
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// for each pixel...
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Byte* pix = image.GetData();
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Byte* end = pix + image.GetWidth() * image.GetHeight() * 3;
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while (pix != end) {
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int r = pix[0], g = pix[1], b = pix[2];
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int r2 = (factor * r - g - b) / div;
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int g2 = (factor * g - r - b) / div;
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int b2 = (factor * b - r - g) / div;
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pix[0] = col(r2);
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pix[1] = col(g2);
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pix[2] = col(b2);
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pix += 3;
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}
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}
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