using System;
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using System.Drawing;
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namespace Microsoft.Windows.Forms
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{
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/// <summary>
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/// 随机颜色生成器
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/// </summary>
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public class RandomColor
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{
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/// <summary>
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/// 黄金分割比例
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/// </summary>
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private const float GOLDEN_RATIO = 0.618033988749895f;
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/// <summary>
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/// 随机颜色,Hue 起始值
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/// </summary>
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private float? m_Hue;
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/// <summary>
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/// 获取随机颜色
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/// </summary>
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/// <param name="saturation">饱和度[0-1]</param>
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/// <param name="brightness">亮度[0-1]</param>
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/// <returns>颜色</returns>
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public Color Next(float saturation, float brightness)
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{
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if (this.m_Hue == null)
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{
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Random random = new Random(unchecked((int)DateTime.Now.Ticks));
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this.m_Hue = (float)random.NextDouble();
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}
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float hue = this.m_Hue.Value;
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hue += GOLDEN_RATIO;
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hue %= 1;
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this.m_Hue = hue;
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return RenderEngine.FromHsv(hue, saturation, brightness);
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}
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/// <summary>
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/// 获取随机颜色
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/// </summary>
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/// <returns>颜色</returns>
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public Color Next()
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{
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return this.Next(0.5f, 0.99f);
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}
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}
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}
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