Data bindings - Fixed internal easing state

Data bindings - Some UI improvements :)
Data bindings - Added floor modifier
Layer properties - Fixed new base values not applying

src/Artemis.Core/Models/Profile/DataBindings/DataBinding.cs

@@ -17,7 +17,6 @@ namespace Artemis.Core
         private readonly List<DataBindingModifier> _modifiers = new List<DataBindingModifier>();
 
         private object _currentValue;
-        private bool _isInitialized;
         private object _previousValue;
         private TimeSpan _easingProgress;
 
@@ -200,6 +199,9 @@ namespace Artemis.Core
         /// <param name="deltaTime">The time in seconds that passed since the last update</param>
         public void Update(double deltaTime)
         {
+            // Data bindings cannot go back in time like brushes
+            deltaTime = Math.Max(0, deltaTime);
+
             _easingProgress = _easingProgress.Add(TimeSpan.FromSeconds(deltaTime));
             if (_easingProgress > EasingTime)
                 _easingProgress = EasingTime;
@@ -256,11 +258,8 @@ namespace Artemis.Core
 
         internal void Initialize(IDataModelService dataModelService, IDataBindingService dataBindingService)
         {
-            if (_isInitialized)
-                throw new ArtemisCoreException("Data binding is already initialized");
-
             // Source
-            if (Entity.SourceDataModelGuid != null)
+            if (Entity.SourceDataModelGuid != null && SourceDataModel == null)
             {
                 var dataModel = dataModelService.GetPluginDataModelByGuid(Entity.SourceDataModelGuid.Value);
                 if (dataModel != null && dataModel.ContainsPath(Entity.SourcePropertyPath))
@@ -270,8 +269,6 @@ namespace Artemis.Core
             // Modifiers
             foreach (var dataBindingModifier in Modifiers)
                 dataBindingModifier.Initialize(dataModelService, dataBindingService);
-
-            _isInitialized = true;
         }
 
         private void ApplyRegistration(DataBindingRegistration dataBindingRegistration)

src/Artemis.Core/Models/Profile/DataBindings/DataBindingModifier.cs

@@ -4,8 +4,6 @@ using System.Linq.Expressions;
 using Artemis.Core.DataModelExpansions;
 using Artemis.Core.Services;
 using Artemis.Storage.Entities.Profile.DataBindings;
-using LiteDB.Engine;
-using Microsoft.VisualBasic;
 using Newtonsoft.Json;
 
 namespace Artemis.Core
@@ -16,10 +14,9 @@ namespace Artemis.Core
     public class DataBindingModifier
     {
         private DataBinding _dataBinding;
-        private bool _isInitialized;
 
         /// <summary>
-        /// Creates a new instance of the <see cref="DataBindingModifier"/> class
+        ///     Creates a new instance of the <see cref="DataBindingModifier" /> class
         /// </summary>
         /// <param name="parameterType">The type of the parameter, can either be dynamic (based on a data model value) or static</param>
         public DataBindingModifier(ProfileRightSideType parameterType)
@@ -83,7 +80,7 @@ namespace Artemis.Core
         public object ParameterStaticValue { get; private set; }
 
         /// <summary>
-        /// A compiled expression tree that when given a matching data model returns the value of the modifiers parameter
+        ///     A compiled expression tree that when given a matching data model returns the value of the modifiers parameter
         /// </summary>
         public Func<DataModel, object> CompiledParameterAccessor { get; set; }
 
@@ -96,13 +93,19 @@ namespace Artemis.Core
         /// <returns>The modified value</returns>
         public object Apply(object currentValue)
         {
+            if (ModifierType == null)
+                return currentValue;
+
+            if (!ModifierType.SupportsParameter)
+                return ModifierType.Apply(currentValue, null);
+
             if (ParameterType == ProfileRightSideType.Dynamic && CompiledParameterAccessor != null)
             {
                 var value = CompiledParameterAccessor(ParameterDataModel);
                 return ModifierType.Apply(currentValue, value);
             }
 
-            if (ParameterType == ProfileRightSideType.Static && ModifierType != null)
+            if (ParameterType == ProfileRightSideType.Static)
                 return ModifierType.Apply(currentValue, ParameterStaticValue);
 
             return currentValue;
@@ -186,11 +189,8 @@ namespace Artemis.Core
 
         internal void Initialize(IDataModelService dataModelService, IDataBindingService dataBindingService)
         {
-            if (_isInitialized)
-                throw new ArtemisCoreException("Data binding modifier is already initialized");
-
             // Modifier type
-            if (Entity.ModifierTypePluginGuid != null)
+            if (Entity.ModifierTypePluginGuid != null && ModifierType == null)
             {
                 var modifierType = dataBindingService.GetModifierType(Entity.ModifierTypePluginGuid.Value, Entity.ModifierType);
                 if (modifierType != null)
@@ -198,14 +198,14 @@ namespace Artemis.Core
             }
 
             // Dynamic parameter
-            if (ParameterType == ProfileRightSideType.Dynamic && Entity.ParameterDataModelGuid != null)
+            if (ParameterType == ProfileRightSideType.Dynamic && Entity.ParameterDataModelGuid != null && ParameterDataModel == null)
             {
                 var dataModel = dataModelService.GetPluginDataModelByGuid(Entity.ParameterDataModelGuid.Value);
                 if (dataModel != null && dataModel.ContainsPath(Entity.ParameterPropertyPath))
                     UpdateParameter(dataModel, Entity.ParameterPropertyPath);
             }
             // Static parameter
-            else if (ParameterType == ProfileRightSideType.Static && Entity.ParameterStaticValue != null)
+            else if (ParameterType == ProfileRightSideType.Static && Entity.ParameterStaticValue != null && ParameterStaticValue == null)
             {
                 // Use the target type so JSON.NET has a better idea what to do
                 var targetType = DataBinding.TargetProperty.PropertyType;
@@ -224,41 +224,6 @@ namespace Artemis.Core
 
                 UpdateParameter(staticValue);
             }
-
-            _isInitialized = true;
-        }
-
-
-        private void CreateExpression()
-        {
-            CompiledParameterAccessor = null;
-
-            if (ModifierType == null || DataBinding == null)
-                return;
-
-            if (ParameterType == ProfileRightSideType.Dynamic && ModifierType.SupportsParameter)
-            {
-                if (ParameterDataModel == null)
-                    return;
-
-                // If the right side value is null, the constant type cannot be inferred and must be provided based on the data binding target
-                var parameterAccessor = CreateAccessor(ParameterDataModel, ParameterPropertyPath, "parameter", out var rightSideParameter);
-                var lambda = Expression.Lambda<Func<DataModel, object>>(Expression.Convert(parameterAccessor, typeof(object)), rightSideParameter);
-                CompiledParameterAccessor = lambda.Compile();
-            }
-        }
-        
-        private Expression CreateAccessor(DataModel dataModel, string path, string parameterName, out ParameterExpression parameter)
-        {
-            var listType = dataModel.GetListTypeInPath(path);
-            if (listType != null)
-                throw new ArtemisCoreException($"Cannot create a regular accessor at path {path} because the path contains a list");
-
-            parameter = Expression.Parameter(typeof(object), parameterName + "DataModel");
-            return path.Split('.').Aggregate<string, Expression>(
-                Expression.Convert(parameter, dataModel.GetType()), // Cast to the appropriate type
-                Expression.Property
-            );
         }
 
         internal void ApplyToEntity()
@@ -287,5 +252,38 @@ namespace Artemis.Core
 
             // Parameter is done during initialize
         }
+
+
+        private void CreateExpression()
+        {
+            CompiledParameterAccessor = null;
+
+            if (ModifierType == null || DataBinding == null)
+                return;
+
+            if (ParameterType == ProfileRightSideType.Dynamic && ModifierType.SupportsParameter)
+            {
+                if (ParameterDataModel == null)
+                    return;
+
+                // If the right side value is null, the constant type cannot be inferred and must be provided based on the data binding target
+                var parameterAccessor = CreateAccessor(ParameterDataModel, ParameterPropertyPath, "parameter", out var rightSideParameter);
+                var lambda = Expression.Lambda<Func<DataModel, object>>(Expression.Convert(parameterAccessor, typeof(object)), rightSideParameter);
+                CompiledParameterAccessor = lambda.Compile();
+            }
+        }
+
+        private Expression CreateAccessor(DataModel dataModel, string path, string parameterName, out ParameterExpression parameter)
+        {
+            var listType = dataModel.GetListTypeInPath(path);
+            if (listType != null)
+                throw new ArtemisCoreException($"Cannot create a regular accessor at path {path} because the path contains a list");
+
+            parameter = Expression.Parameter(typeof(object), parameterName + "DataModel");
+            return path.Split('.').Aggregate<string, Expression>(
+                Expression.Convert(parameter, dataModel.GetType()), // Cast to the appropriate type
+                Expression.Property
+            );
+        }
     }
 }

src/Artemis.Core/Models/Profile/DataBindings/Modifiers/FloorModifierType.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+
+namespace Artemis.Core
+{
+    internal class FloorModifierType : DataBindingModifierType
+    {
+        public FloorModifierType()
+        {
+            SupportsParameter = false;
+        }
+
+        public override IReadOnlyCollection<Type> CompatibleTypes => Constants.NumberTypes;
+        public override string Description => "Floor";
+        public override string Icon => "ArrowDownDropCircleOutline";
+
+
+        public override object Apply(object currentValue, object parameterValue)
+        {
+            var floatValue = Convert.ToSingle(currentValue);
+            return Math.Floor(floatValue);
+        }
+    }
+}

src/Artemis.Core/Models/Profile/LayerProperties/LayerProperty.cs

@@ -39,6 +39,7 @@ namespace Artemis.Core
                     return;
 
                 base.BaseValue = value;
+                Update();
                 OnBaseValueChanged();
             }
         }
@@ -104,7 +105,7 @@ namespace Artemis.Core
 
             // Force an update so that the base value is applied to the current value and
             // keyframes/data bindings are applied using the new base value
-            Update(0);
+            Update();
         }
 
         /// <summary>
@@ -195,7 +196,7 @@ namespace Artemis.Core
         /// <summary>
         ///     Updates the property, applying keyframes and data bindings to the current value
         /// </summary>
-        internal void Update(double deltaTime)
+        internal void Update(double deltaTime = 0)
         {
             CurrentValue = BaseValue;