WPF效果第二百四十五篇加载深蓝底图效果

https://www.cnblogs.com/m7777/p/16280817.html

  // 遍历每个像素
  for (int y = 0; y < inputBitmap.Height; y++)
  {
      for (int x = 0; x < inputBitmap.Width; x++)
      {
          Color originalColor = inputBitmap.GetPixel(x, y);
          // 灰度化
          int grayValue = (int)(originalColor.R * 0.299 + originalColor.G * 0.587 + originalColor.B * 0.114);
          Color grayColor = Color.FromArgb(grayValue, grayValue, grayValue);
          // 反转颜色
          int invertedR = 255 - grayColor.R;
          int invertedG = 255 - grayColor.G;
          int invertedB = 255 - grayColor.B;
          // 应用深蓝色调
          float blueTintFactorR = 0.2f;
          float blueTintFactorG = 0.3f;
          float blueTintFactorB = 0.5f;
          int tintedR = (int)(invertedR * blueTintFactorR);
          int tintedG = (int)(invertedG * blueTintFactorG);
          int tintedB = (int)(invertedB * blueTintFactorB);
          //调整为所需的亮度
          float brightness = 2.5f; 
          //调整为所需的对比度
          float contrast = 1f;
          int adjustedR = (int)((((tintedR / 255.0f - 0.5f) * contrast + 0.5f) * brightness) * 255);
          int adjustedG = (int)((((tintedG / 255.0f - 0.5f) * contrast + 0.5f) * brightness) * 255);
          int adjustedB = (int)((((tintedB / 255.0f - 0.5f) * contrast + 0.5f) * brightness) * 255);
          // 确保颜色在有效范围内
          adjustedR = Clamp(adjustedR, 0, 255);
          adjustedG = Clamp(adjustedG, 0, 255);
          adjustedB = Clamp(adjustedB, 0, 255);
          // 设置新颜色
          Color newColor = Color.FromArgb(adjustedR, adjustedG, adjustedB);
          outputBitmap.SetPixel(x, y, newColor);
      }
  }