/// <summary>
/// HSVの色調整を行ってピクセルデータを返す。
/// </summary>
/// <param name="c">カラー</param>
/// <param name="hue">色差加算値(-360≦hue≦360)</param>
/// <param name="saturation">彩度加割合(-255≦saturation≦255)</param>
/// <param name="value">明度加算割合(-255≦value≦255)</param>
/// <returns>カラー</returns>
public static Color ProcessHSVFilter(Color c, int hue, int saturation, int value)
{
if (((hue == 0) && (saturation == 0) && (value == 0)))
{
return(c); // 色変換しない。
}
var srcHSV = ColorConverter.ConvertRGBtoHSV(c);
float h = ColorUtility.GetHueWithLimitedRange((srcHSV.Hue + hue) % 360.0f);
float s = ColorUtility.ModifyValueByPercent(srcHSV.Saturation, 0f, 1.0f, saturation / 255.0f);
float v = Math.Min(ColorUtility.ModifyValueByPercent(srcHSV.Value, 0f, srcHSV.Value * 2, value / 255.0f), 1.0f);
return(ColorConverter.ConvertHSVtoRGB(ColorHSV.FromHSV(h, s, v), c.A));
}
/// <summary>
/// HSVの色調整を行ってピクセルデータを返す。
/// </summary>
/// <param name="c">カラー</param>
/// <param name="hue">色差加算値(-360≦hue≦360)</param>
/// <param name="saturation">彩度加割合(-255≦saturation≦255)</param>
/// <param name="lightness">輝度加算割合(-255≦lightness≦255)</param>
/// <returns></returns>
public static Color ProcessHSLFilter(Color c, int hue, int saturation, int lightness)
{
if (((hue == 0) && (saturation == 0) && (lightness == 0)))
{
return(c); // 色変換しない。
}
ColorHSL srcHSL = ColorConverter.ConvertRGBtoHSL(c);
float h = ColorUtility.GetHueWithLimitedRange((srcHSL.Hue + hue) % 360.0f);
float s = ColorUtility.ModifyValueByPercent(srcHSL.Saturation, 0f, 1.0f, saturation / 255.0f);
float l = Math.Min(ColorUtility.ModifyValueByPercent(srcHSL.Lightness, 0f, srcHSL.Lightness * 2, lightness / 255.0f), 1.0f);
return(ColorConverter.ConvertHSLtoRGB(ColorHSL.FromHSL(h, s, l), c.A));
}
