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Added ColorExtensions

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miku-666
2023-04-25 18:23:40 +02:00
parent 12b7fce6ef
commit 2e889ab8f0
3 changed files with 54 additions and 36 deletions
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45
PCK-Studio/Classes/Extensions/ColorExtensions.cs Normal file
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@@ -0,0 +1,45 @@
using System;
using System.Drawing;
using System.Numerics;
namespace PckStudio.Extensions
{
internal static class ColorExtensions
{
/// <summary>
/// Normalizes the Color between 0.0 - 1.0
/// </summary>
/// <returns></returns>
public static Vector3 Normalize(this Color color)
{
return new Vector3(color.R / 255f, color.G / 255f, color.B / 255f);
}
private static T Clamp<T>(T value, T min, T max) where T : IComparable<T>
{
if (value.CompareTo(min) < 0) return min;
if (value.CompareTo(max) > 0) return max;
return value;
}
public static byte CalculateColorBlendValue(float source, float overlay, BlendMode blendType)
{
source = Clamp(source, 0.0f, 1.0f);
overlay = Clamp(overlay, 0.0f, 1.0f);
float resultValue = blendType switch
{
BlendMode.Add => source + overlay,
BlendMode.Subtract => source - overlay,
BlendMode.Multiply => source * overlay,
BlendMode.Average => (source + overlay) / 2.0f,
BlendMode.AscendingOrder => source > overlay ? overlay : source,
BlendMode.DescendingOrder => source < overlay ? overlay : source,
BlendMode.Screen => 1f - (1f - source) * (1f - overlay),
_ => 0.0f
};
return (byte)Clamp(resultValue * 255, 0, 255);
}
}
}

44
PCK-Studio/Classes/Extensions/ImageExtensions.cs
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@@ -146,7 +146,7 @@ namespace PckStudio.Extensions
return image;
}
public static Image Blend(this Image image, Color foregroundColor, BlendMode mode)
public static Image Blend(this Image image, Color overlayColor, BlendMode mode)
{
if (image is not Bitmap baseImage)
return image;
@@ -157,15 +157,13 @@ namespace PckStudio.Extensions
Marshal.Copy(baseImageData.Scan0, baseImageBuffer, 0, baseImageBuffer.Length);
float overlayR = foregroundColor.R / 255f;
float overlayG = foregroundColor.G / 255f;
float overlayB = foregroundColor.B / 255f;
var normalized = overlayColor.Normalize();
for (int k = 0; k < baseImageBuffer.Length; k += 4)
{
baseImageBuffer[k + 0] = CalculateColorComponentBlendValue(baseImageBuffer[k + 0] / 255f, overlayR, mode);
baseImageBuffer[k + 1] = CalculateColorComponentBlendValue(baseImageBuffer[k + 1] / 255f, overlayG, mode);
baseImageBuffer[k + 2] = CalculateColorComponentBlendValue(baseImageBuffer[k + 2] / 255f, overlayB, mode);
baseImageBuffer[k + 0] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 0] / 255f, normalized.X, mode);
baseImageBuffer[k + 1] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 1] / 255f, normalized.Y, mode);
baseImageBuffer[k + 2] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 2] / 255f, normalized.Z, mode);
}
Bitmap bitmapResult = new Bitmap(baseImage.Width, baseImage.Height, PixelFormat.Format32bppArgb);
@@ -200,9 +198,9 @@ namespace PckStudio.Extensions
for (int k = 0; k < baseImageBuffer.Length && k < overlayImageBuffer.Length; k += 4)
{
baseImageBuffer[k + 0] = CalculateColorComponentBlendValue(baseImageBuffer[k + 0] / 255f, overlayImageBuffer[k + 0] / 255f, mode);
baseImageBuffer[k + 1] = CalculateColorComponentBlendValue(baseImageBuffer[k + 1] / 255f, overlayImageBuffer[k + 1] / 255f, mode);
baseImageBuffer[k + 2] = CalculateColorComponentBlendValue(baseImageBuffer[k + 2] / 255f, overlayImageBuffer[k + 2] / 255f, mode);
baseImageBuffer[k + 0] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 0] / 255f, overlayImageBuffer[k + 0] / 255f, mode);
baseImageBuffer[k + 1] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 1] / 255f, overlayImageBuffer[k + 1] / 255f, mode);
baseImageBuffer[k + 2] = ColorExtensions.CalculateColorBlendValue(baseImageBuffer[k + 2] / 255f, overlayImageBuffer[k + 2] / 255f, mode);
}
Bitmap bitmapResult = new Bitmap(baseImage.Width, baseImage.Height, PixelFormat.Format32bppArgb);
@@ -216,31 +214,5 @@ namespace PckStudio.Extensions
overlayImage.UnlockBits(overlayImageData);
return bitmapResult;
}
private static T Clamp<T>(T value, T min, T max) where T : IComparable<T>
{
if (value.CompareTo(min) < 0) return min;
else if (value.CompareTo(max) > 0) return max;
else return value;
}
private static byte CalculateColorComponentBlendValue(float source, float overlay, BlendMode blendType)
{
source = Clamp(source, 0.0f, 1.0f);
overlay = Clamp(overlay, 0.0f, 1.0f);
float resultValue = blendType switch
{
BlendMode.Add => source + overlay,
BlendMode.Subtract => source - overlay,
BlendMode.Multiply => source * overlay,
BlendMode.Average => (source + overlay) / 2.0f,
BlendMode.AscendingOrder => source > overlay ? overlay : source,
BlendMode.DescendingOrder => source < overlay ? overlay : source,
BlendMode.Screen => 1f - (1f - source)*(1f - overlay),
_ => 0.0f
};
return (byte)Clamp(resultValue * 255, 0, 255);
}
}
}

1
PCK-Studio/PckStudio.csproj
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@@ -171,6 +171,7 @@
<Compile Include="Classes\API\PCKCenter\PCKCollectionsLocal.cs" />
<Compile Include="Classes\API\PCKCenter\SaveLocalJSON.cs" />
<Compile Include="Classes\Extensions\BlendMode.cs" />
<Compile Include="Classes\Extensions\ColorExtensions.cs" />
<Compile Include="Classes\Extensions\EnumerableExtensions.cs" />
<Compile Include="Classes\Extensions\GraphicsExtensions.cs" />
<Compile Include="Classes\FileTypes\CSMBFile.cs" />