port from perforce

intromat/Intromat/ViewModels/Editors/SamplerEditorViewModel.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Reactive;
+using System.Reactive.Linq;
+using Intromat.Model.Compiler;
+using Intromat.Nodes.Textures;
+using Intromat.Views.Editors;
+using NodeNetwork.Toolkit.ValueNode;
+using ReactiveUI;
+using SharpDX.Direct3D11;
+using Splat;
+
+namespace Intromat.ViewModels.Editors
+{
+    public class SamplerEditorViewModel : ExpressionEditorBaseViewModel<SamplerDesc, SamplerLiteralValue, SamplerLiteralModel>
+    {
+        private Filter _filter = SamplerStateDescription.Default().Filter;
+        private TextureAddressMode _address = SamplerStateDescription.Default().AddressU;
+
+        static SamplerEditorViewModel()
+        {
+            Locator.CurrentMutable.Register(() => new SamplerEditorView(), typeof(IViewFor<SamplerEditorViewModel>));
+        }
+
+        public SamplerEditorViewModel()
+        {
+            this.WhenAnyValue(vm => vm.CustomValue)
+                .Where(s => s != null)
+                .Subscribe(s =>
+                {
+                    Filter = s.Filter;
+                    Address = s.Address;
+                });
+
+            this.WhenAnyValue(vm => vm.Filter, vm => vm.Address)
+                .Subscribe((p) =>
+                {
+                    CustomValue = new SamplerDesc()
+                    {
+                        Filter = p.Item1,
+                        Address = p.Item2
+                    };
+                });
+        }
+
+        public Filter Filter
+        {
+            get => _filter; 
+            set => this.RaiseAndSetIfChanged(ref _filter, value);
+        }
+
+        public TextureAddressMode Address
+        {
+            get => _address; 
+            set => this.RaiseAndSetIfChanged(ref _address, value);
+        }
+    }
+}