Add field 2d viewer

FieldVisualizer/Entities/ColorMaps/ColorMap.cs

@@ -2,12 +2,49 @@
 using System.Collections.Generic;
 using System.Windows.Media;
 using System.Text;
+using System.Windows;
 
 namespace FieldVisualizer.Entities.ColorMaps
 {
     public class ColorMap : IColorMap
     {
+        private LinearGradientBrush _gradientBrush;
+
         public string Name { get; set; }
         public List<Color> Colors { get; set; }
+
+        public LinearGradientBrush GradientBrush
+        {
+            get
+            {
+                if (_gradientBrush == null)
+                {
+                    _gradientBrush = CreateGradientBrush();
+                    _gradientBrush.Freeze(); // very important for performance
+                }
+
+                return _gradientBrush;
+            }
+        }
+
+        protected virtual LinearGradientBrush CreateGradientBrush()
+        {
+            var brush = new LinearGradientBrush
+            {
+                StartPoint = new Point(0, 0),
+                EndPoint = new Point(1, 0) // horizontal
+            };
+
+            int count = Colors.Count;
+            for (int i = 0; i < count; i++)
+            {
+                brush.GradientStops.Add(
+                    new GradientStop(
+                        Colors[i],
+                        (double)i / (count - 1)));
+            }
+
+            return brush;
+        }
     }
 }

FieldVisualizer/Entities/ColorMaps/Factories/ColorMapFactory.cs

@@ -32,7 +32,7 @@ namespace FieldVisualizer.Entities.ColorMaps.Factories
         {
             ColorMap colorMap = new()
             {
-                Name = "LiraSpectrumColorMap"
+                Name = "Lira Style Spectrum"
             };
             List<Color> colors = new();
             byte Alpha = 0xff;
@@ -55,7 +55,7 @@ namespace FieldVisualizer.Entities.ColorMaps.Factories
         {
             ColorMap colorMap = new()
             {
-                Name = "FullSpectrumColorMap"
+                Name = "Full Spectrum"
             };
             List<Color> colors = new List<Color>();
             byte Alpha = 0xff;
@@ -78,7 +78,7 @@ namespace FieldVisualizer.Entities.ColorMaps.Factories
         private static IColorMap GetRedToWhite()
         {
             ColorMap colorMap = new ColorMap();
-            colorMap.Name = "FullSpectrumColorMap";
+            colorMap.Name = "Red To White Spectrum";
             List<Color> colors = new List<Color>();
             byte Alpha = 0xff;
             colors.AddRange(new Color[]{
@@ -91,7 +91,7 @@ namespace FieldVisualizer.Entities.ColorMaps.Factories
         private static IColorMap GetRedToBlue()
         {
             ColorMap colorMap = new ColorMap();
-            colorMap.Name = "FullSpectrumColorMap";
+            colorMap.Name = "Red To Blue Spectrum";
             List<Color> colors = new List<Color>();
             byte Alpha = 0xff;
             colors.AddRange(new Color[]{
@@ -104,7 +104,7 @@ namespace FieldVisualizer.Entities.ColorMaps.Factories
         private static IColorMap GetBlueToWhite()
         {
             ColorMap colorMap = new ColorMap();
-            colorMap.Name = "FullSpectrumColorMap";
+            colorMap.Name = "Blue To White Spectrum";
             List<Color> colors = new List<Color>();
             byte Alpha = 0xff;
             colors.AddRange(new Color[]{

FieldVisualizer/Entities/ColorMaps/IColorMap.cs

@@ -9,5 +9,6 @@ namespace FieldVisualizer.Entities.ColorMaps
     {
         string Name { get;}
         List<Color> Colors { get; }
+        LinearGradientBrush GradientBrush { get; }
     }
 }