Signitifantly reduced build size

Updated project folder names
Show only selected layer in visualization
Added rectangle support

src/Artemis.Plugins.LayerBrushes.Color/ColorBrush.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Artemis.Core.Models.Profile;
+using Artemis.Core.Plugins.LayerBrush;
+using SkiaSharp;
+
+namespace Artemis.Plugins.LayerBrushes.Color
+{
+    public class ColorBrush : LayerBrush
+    {
+        private SKShader _shader;
+        private List<SKColor> _testColors;
+        private SKPaint _paint;
+
+        public ColorBrush(Layer layer, ColorBrushSettings settings, LayerBrushDescriptor descriptor) : base(layer, settings, descriptor)
+        {
+            Settings = settings;
+
+            _testColors = new List<SKColor>();
+            for (var i = 0; i < 9; i++)
+            {
+                if (i != 8)
+                    _testColors.Add(SKColor.FromHsv(i * 32, 100, 100));
+                else
+                    _testColors.Add(SKColor.FromHsv(0, 100, 100));
+            }
+
+            CreateShader();
+            Layer.RenderPropertiesUpdated += (sender, args) => CreateShader();
+            Settings.PropertyChanged += (sender, args) => CreateShader();
+        }
+
+        private void CreateShader()
+        {
+            var center = new SKPoint(Layer.Rectangle.MidX, Layer.Rectangle.MidY);
+            SKShader shader;
+            switch (Settings.GradientType)
+            {
+                case GradientType.Solid:
+                    shader = SKShader.CreateColor(_testColors.First());
+                    break;
+                case GradientType.LinearGradient:
+                    shader = SKShader.CreateLinearGradient(new SKPoint(0, 0), new SKPoint(Layer.Rectangle.Width, 0), _testColors.ToArray(), SKShaderTileMode.Repeat);
+                    break;
+                case GradientType.RadialGradient:
+                    shader = SKShader.CreateRadialGradient(center, Math.Min(Layer.Rectangle.Width, Layer.Rectangle.Height), _testColors.ToArray(), SKShaderTileMode.Repeat);
+                    break;
+                case GradientType.SweepGradient:
+                    shader = SKShader.CreateSweepGradient(center, _testColors.ToArray(), null, SKShaderTileMode.Clamp, 0, 360);
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+
+            var oldShader = _shader;
+            var oldPaint = _paint;
+            _shader = shader;
+            _paint = new SKPaint {Shader = _shader, FilterQuality = SKFilterQuality.Low};
+            oldShader?.Dispose();
+            oldPaint?.Dispose();
+        }
+
+        public new ColorBrushSettings Settings { get; }
+
+        public override LayerBrushViewModel GetViewModel()
+        {
+            return new ColorBrushViewModel(this);
+        }
+
+        public override void Render(SKCanvas canvas)
+        {
+            canvas.DrawPath(Layer.LayerShape.RenderPath, _paint);
+        }
+    }
+}