83 lines
2.5 KiB
C#
83 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Drawing;
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namespace Toolbox.Library.IO
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{
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//Based on
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//https://github.com/libertyernie/brawltools/blob/40d7431b1a01ef4a0411cd69e51411bd581e93e2/BrawlLib/Imaging/PixelTypes.cs
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public class HSVPixel
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{
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public ushort H { get; set; }
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public byte S { get; set; }
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public byte V { get; set; }
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public HSVPixel(ushort h, byte s, byte v) { H = h; S = s; V = v; }
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public static HSVPixel FromRGBA(Color p)
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{
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HSVPixel outp = new HSVPixel(0,0,0);
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int min = Math.Min(Math.Min(p.R, p.G), p.B);
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int max = Math.Max(Math.Max(p.R, p.G), p.B);
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int diff = max - min;
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if (diff == 0)
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{
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outp.H = 0;
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outp.S = 0;
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}
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else
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{
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if (max == p.R)
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outp.H = (ushort)((60 * ((float)(p.G - p.B) / diff) + 360) % 360);
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else if (max == p.G)
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outp.H = (ushort)(60 * ((float)(p.B - p.R) / diff) + 120);
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else
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outp.H = (ushort)(60 * ((float)(p.R - p.G) / diff) + 240);
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if (max == 0)
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outp.S = 0;
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else
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outp.S = (byte)(diff * 100 / max);
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}
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outp.V = (byte)(max * 100 / 255);
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return outp;
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}
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public Color ToRGBA()
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{
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var color = new Color();
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byte v = (byte)(V * 255 / 100);
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if (S == 0)
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color = Color.FromArgb(255,v,v,v);
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else
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{
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int h = (H / 60) % 6;
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float f = (H / 60.0f) - (H / 60);
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byte p = (byte)(V * (100 - S) * 255 / 10000);
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byte q = (byte)(V * (100 - (int)(f * S)) * 255 / 10000);
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byte t = (byte)(V * (100 - (int)((1.0f - f) * S)) * 255 / 10000);
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switch (h)
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{
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case 0: color = Color.FromArgb(255, v, t, p); break;
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case 1: color = Color.FromArgb(255, q, v, p); break;
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case 2: color = Color.FromArgb(255, p, v, t); break;
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case 3: color = Color.FromArgb(255, p, q, v); break;
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case 4: color = Color.FromArgb(255, t, p, v); break;
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default: color = Color.FromArgb(255, v, p, q); break;
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}
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}
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return color;
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}
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}
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}
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