Layer properties - Added back most of the reworked VMs and views

src/Artemis.UI/Screens/Module/ProfileEditor/LayerProperties/Timeline/TimelineEasingViewModel.cs

@@ -0,0 +1,50 @@
+using System.Windows;
+using System.Windows.Media;
+using Artemis.Core.Utilities;
+using Humanizer;
+
+namespace Artemis.UI.Screens.Module.ProfileEditor.LayerProperties.Timeline
+{
+    public class TimelineEasingViewModel
+    {
+        private readonly TimelineKeyframeViewModel _keyframeViewModel;
+        private bool _isEasingModeSelected;
+
+        public TimelineEasingViewModel(TimelineKeyframeViewModel keyframeViewModel, Easings.Functions easingFunction)
+        {
+            _keyframeViewModel = keyframeViewModel;
+            _isEasingModeSelected = keyframeViewModel.BaseLayerPropertyKeyframe.EasingFunction == easingFunction;
+
+            EasingFunction = easingFunction;
+            Description = easingFunction.Humanize();
+
+            CreateGeometry();
+        }
+
+        public Easings.Functions EasingFunction { get; }
+        public PointCollection EasingPoints { get; set; }
+        public string Description { get; set; }
+
+        public bool IsEasingModeSelected
+        {
+            get => _isEasingModeSelected;
+            set
+            {
+                _isEasingModeSelected = value;
+                if (_isEasingModeSelected)
+                    _keyframeViewModel.SelectEasingMode(this);
+            }
+        }
+
+        private void CreateGeometry()
+        {
+            EasingPoints = new PointCollection();
+            for (var i = 1; i <= 10; i++)
+            {
+                var x = i;
+                var y = Easings.Interpolate(i / 10.0, EasingFunction) * 10;
+                EasingPoints.Add(new Point(x, y));
+            }
+        }
+    }
+}