53 lines
1.6 KiB
C#
53 lines
1.6 KiB
C#
using System.Drawing;
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namespace Resources.Image
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{
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public class ColorError
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{
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public const byte LowLevel = 0x00;
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public const byte HighLevel = 0xff;
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public const byte Treshold = 0x80;
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public ColorError(Color original)
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{
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var a = NewValue(original.A);
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var r = NewValue(original.R);
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var g = NewValue(original.G);
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var b = NewValue(original.B);
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NewColor = Color.FromArgb(a, r, g, b);
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ErrorA = original.A - a;
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ErrorR = original.R - r;
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ErrorG = original.G - g;
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ErrorB = original.B - b;
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}
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public Color NewColor { get; }
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public int ErrorA { get; }
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public int ErrorR { get; }
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public int ErrorG { get; }
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public int ErrorB { get; }
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public bool IsZero => ErrorA == 0 && ErrorR == 0 && ErrorG == 0 && ErrorB == 0;
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public Color ApplyError(Color color, int part, int total)
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{
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return Color.FromArgb(
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CheckBounds(color.A + ErrorA * part / total),
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CheckBounds(color.R + ErrorR * part / total),
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CheckBounds(color.G + ErrorG * part / total),
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CheckBounds(color.B + ErrorB * part / total)
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);
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}
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private static byte NewValue(byte value)
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{
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return value < Treshold ? LowLevel : HighLevel;
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}
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private static byte CheckBounds(int value)
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{
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return (byte) (value < LowLevel ? LowLevel : (value > HighLevel ? HighLevel : value));
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}
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}
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} |