1 files changed, 34 insertions, 0 deletions
diff --git a/UVtools.Core/Extensions/DrawingExtensions.cs b/UVtools.Core/Extensions/DrawingExtensions.cs
new file mode 100644
index 0000000..8a60ee4
--- /dev/null
+++ b/UVtools.Core/Extensions/DrawingExtensions.cs
@@ -0,0 +1,34 @@
+using System;
+using System.Drawing;
+
+namespace UVtools.Core.Extensions
+{
+    public static class DrawingExtensions
+    {
+        public static Color FactorColor(this Color color, byte pixelColor, byte min = 0, byte max = byte.MaxValue) =>
+            FactorColor(color, pixelColor / 255f, min, max);
+
+        public static Color FactorColor(this Color color, float factor, byte min = 0, byte max = byte.MaxValue)
+        {
+            byte r = (byte)(color.R == 0 ? 0 :
+                Math.Min(Math.Max(min, color.R * factor), max));
+
+            byte g = (byte)(color.G == 0 ? 0 :
+                Math.Min(Math.Max(min, color.G * factor), max));
+
+            byte b = (byte)(color.B == 0 ? 0 :
+                Math.Min(Math.Max(min, color.B * factor), max));
+            return Color.FromArgb(r, g, b);
+        }
+
+        public static int GetArea(this Rectangle rect)
+        {
+            return rect.Width * rect.Height;
+        }
+
+        public static int GetArea(this Size size)
+        {
+            return size.Width * size.Height;
+        }
+    }
+}