Added average color node

src/Artemis.VisualScripting/Nodes/Color/AverageColorNode.cs

@@ -0,0 +1,48 @@
+using Artemis.Core;
+using SkiaSharp;
+
+namespace Artemis.VisualScripting.Nodes.Color;
+
+[Node("Average color", "Calculate the average if all colors in the image", "Image", InputType = typeof(SKBitmap), OutputType = typeof(SKColor))]
+public class AverageColorNode : Node
+{
+    #region Properties & Fields
+
+    public InputPin<SKBitmap> Image { get; set; }
+
+    public OutputPin<SKColor> Average { get; set; }
+
+    #endregion
+
+    #region Constructors
+
+    public AverageColorNode()
+        : base("Average color", "Calculate the average if all colors in the image")
+    {
+        Image = CreateInputPin<SKBitmap>();
+        Average = CreateOutputPin<SKColor>();
+    }
+
+    #endregion
+
+    #region Methods
+
+    public override void Evaluate()
+    {
+        SKBitmap? image = Image.Value;
+        if (image == null) return;
+
+        Span<SKColor> colors = image.Pixels;
+        int r = 0, g = 0, b = 0;
+        foreach (SKColor color in colors)
+        {
+            r += color.Red;
+            g += color.Green;
+            b += color.Blue;
+        }
+
+        Average.Value = new SKColor((byte)(r / colors.Length), (byte)(g / colors.Length), (byte)(b / colors.Length));
+    }
+
+    #endregion
+}