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// Copyright (c) 2015-2021 Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
using System;
using MiscUtil;
using System.Reflection;
namespace vke
{
public class Animation<T> : Animation
{
public delegate T GetterDelegate();
public delegate void SetterDelegate(T value);
public T TargetValue;
T initialValue;
T zero;
public T Step;
public bool Cycle;
protected GetterDelegate getValue;
protected SetterDelegate setValue;
#region CTOR
public Animation(Object instance, string _propertyName)
{
propertyName = _propertyName;
AnimatedInstance = instance;
PropertyInfo pi = instance.GetType().GetProperty(propertyName);
getValue = (GetterDelegate)Delegate.CreateDelegate(typeof(GetterDelegate), instance, pi.GetGetMethod());
setValue = (SetterDelegate)Delegate.CreateDelegate(typeof(SetterDelegate), instance, pi.GetSetMethod());
}
public Animation(Object instance, string _propertyName, T Target, T step)
{
propertyName = _propertyName;
AnimatedInstance = instance;
PropertyInfo pi = instance.GetType().GetProperty(propertyName);
getValue = (GetterDelegate)Delegate.CreateDelegate(typeof(GetterDelegate), instance, pi.GetGetMethod());
setValue = (SetterDelegate)Delegate.CreateDelegate(typeof(SetterDelegate), instance, pi.GetSetMethod());
TargetValue = Target;
T value = getValue();
initialValue = value;
Type t = typeof(T);
if (t.IsPrimitive) {
Step = (T)Convert.ChangeType (step, t);
zero = (T)Convert.ChangeType (0, t);
}else {
Step = (T)Activator.CreateInstance (typeof(T), new Object[] { step });
zero = (T)Activator.CreateInstance (typeof(T), 0f);
}
T test = (T)Operator.SubtractAlternative (value, TargetValue);
if (Operator.LessThan(test, zero))
{
if (Operator.LessThan (Step, zero))
Step = Operator.Negate (Step);
}
else if (Operator.GreaterThan(Step, zero))
Step = Operator.Negate (Step);
}
#endregion
public override void Process()
{
T value = getValue();
//Debug.WriteLine ("Anim: {0} <= {1}", value, this.ToString ());
if (Operator.GreaterThan(Step, zero))
{
value = Operator.Add (value, Step);
setValue(value);
//Debug.WriteLine(value);
if (Operator.GreaterThan(Operator.Subtract(TargetValue, value), zero))
return;
}
else
{
value = Operator.Add (value, Step);
setValue(value);
if (Operator.LessThan(Operator.Subtract(TargetValue, value), zero))
return;
}
if (Cycle) {
Step = Operator.Negate (Step);
TargetValue = initialValue;
Cycle = false;
return;
}
setValue(TargetValue);
AnimationList.Remove(this);
RaiseAnimationFinishedEvent ();
}
public override string ToString ()
{
return string.Format ("{0}:->{1}:{2}",base.ToString(),TargetValue,Step);
}
}
}
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