C# RGB格式与HBS格式颜色互转

本文主要是介绍C# RGB格式与HBS格式颜色互转，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

代码如下： 

RGB->HSB[float类型版本]

/// <summary>   
/// HSB用float数据类型表示   
/// </summary>   
static void RGB2HSB(int r, int g, int b, out float hue, out float sat, out float bri)   
{   int minval = Math.Min(r, Math.Min(g, b));   int maxval = Math.Max(r, Math.Max(g, b));   //bri   bri = (float)(maxval + minval) / 510;   //sat   if (maxval == minval)   {   sat = 0.0f;   }   else   {   int sum = maxval + minval;   if (sum > 255)   {   sum = 510 - sum;   }   sat = (float)(maxval - minval) / sum;   }   //hue   if (maxval == minval)   {   hue = 0.0f;   }   else   {   float diff = (float)(maxval - minval);   float rnorm = (maxval - r) / diff;   float gnorm = (maxval - g) / diff;   float bnorm = (maxval - b) / diff;   hue = 0.0f;   if (r == maxval)   {   hue = 60.0f * (6.0f + bnorm - gnorm);   }   if (g == maxval)   {   hue = 60.0f * (2.0f + rnorm - bnorm);   }   if (b == maxval)   {   hue = 60.0f * (4.0f + gnorm - rnorm);   }   if (hue > 360.0f)   {   hue = hue - 360.0f;   }   }   
}   

RGB->HSB[int版本]

/// <summary>   
/// HSB用int数据类型表示，同Winform中的ColorDialog中HSB的表示   
/// </summary>   
static void RGB2HSB(int r, int g, int b, out int hue, out int sat, out int bri)   
{   float fHue, fSat, fBri;   RGB2HSB(r, g, b, out fHue, out fSat, out fBri);   hue = (int)((fHue / 360.0f) * 240 + 0.5);   sat = (int)(fSat * 241 + 0.5);   bri = (int)(fBri * 241 + 0.5);   if (hue > 239)   {   hue = 239;   }   if (sat > 240)   {   sat = 240;   }   if (bri > 240)   {   bri = 240;   }   
}   

HSB->RGB

/// <summary>   
/// 传入的HSB用int型表示，如果用float型表示，可将下面的转换成float过程去掉   
/// </summary>   
static void HSB2RGB(int hue, int sat, int bri, out int r, out  int g, out int b)   
{   //begin:HSB转换为float   if (hue > 239)   {   hue = 239;   }   else   {   if (hue < 0)   {   hue = 0;   }   }   if (sat > 240)   {   sat = 240;   }   else   {   if (sat < 0)   {   sat = 0;   }   }   if (bri > 240)   {   bri = 240;   }   else   {   if (bri < 0)   {   bri = 0;   }   }   float H = hue / 239.0f;   float S = sat / 240.0f;   float L = bri / 240.0f;   //end:HSB转换为float   float red = 0, green = 0, blue = 0;   float d1, d2;   if (L == 0)   {   red = green = blue = 0;   }   else   {   if (S == 0)   {   red = green = blue = L;   }   else   {   d2 = (L <= 0.5f) ? L * (1.0f + S) : L + S - (L * S);   d1 = 2.0f * L - d2;   float[] d3 = new float[] { H + 1.0f / 3.0f, H, H - 1.0f / 3.0f };   float[] rgb = new float[] { 0, 0, 0 };   for (int i = 0; i < 3; i++)   {   if (d3[i] < 0)   {   d3[i] += 1.0f;   }   if (d3[i] > 1.0f)   {   d3[i] -= 1.0f;   }   if (6.0f * d3[i] < 1.0f)   {   rgb[i] = d1 + (d2 - d1) * d3[i] * 6.0f;   }   else   {   if (2.0f * d3[i] < 1.0f)   {   rgb[i] = d2;   }   else   {   if (3.0f * d3[i] < 2.0f)   {   rgb[i] = (d1 + (d2 - d1) * ((2.0f / 3.0f) - d3[i]) * 6.0f);   }   else   {   rgb[i] = d1;   }   }   }   }   red = rgb[0];   green = rgb[1];   blue = rgb[2];   }   }   red = 255.0f * red;   green = 255.0f * green;   blue = 255.0f * blue;   if (red < 1)   {   red = 0.0f;   }   else   {   if (red > 255.0f)   {   red = 255.0f;   }   }   if (green < 1)   {   green = 0.0f;   }   else   {   if (green > 255.0f)   {   green = 255.0f;   }   }   if (blue < 1)   {   blue = 0.0f;   }   else   {   if (blue > 255.0f)   {   blue = 255.0f;   }   }   r = (int)(red + 0.5);   g = (int)(green + 0.5);   b = (int)(blue + 0.5);   
}

这篇关于C# RGB格式与HBS格式颜色互转的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

---