private static bool ValidateFromToOrByValue(object value)
{
CornerRadius?nullable = (CornerRadius?)value;
if (nullable.HasValue)
{
return(AnimationHelpers.IsValidAnimationValueCornerRadius(nullable.Value));
}
return(true);
}
/// <summary>
/// Calculates a value that represents the current value of the property being animated, as determined by the <see cref="T:System.Windows.Media.Animation.ThicknessAnimation"/>.
/// </summary>
///
/// <returns>
/// The calculated value of the property, as determined by the current animation.
/// </returns>
/// <param name="defaultOriginValue">The suggested origin value, used if the animation does not have its own explicitly set start value.</param><param name="defaultDestinationValue">The suggested destination value, used if the animation does not have its own explicitly set end value.</param><param name="animationClock">An <see cref="T:System.Windows.Media.Animation.AnimationClock"/> that generates the <see cref="P:System.Windows.Media.Animation.Clock.CurrentTime"/> or <see cref="P:System.Windows.Media.Animation.Clock.CurrentProgress"/> used by the animation.</param>
protected override CornerRadius GetCurrentValueCore(CornerRadius defaultOriginValue, CornerRadius defaultDestinationValue, AnimationClock animationClock)
{
if (!this._isAnimationFunctionValid)
{
this.ValidateAnimationFunction();
}
double num1 = animationClock.CurrentProgress.Value;
IEasingFunction easingFunction = this.EasingFunction;
if (easingFunction != null)
{
num1 = easingFunction.Ease(num1);
}
var from = new CornerRadius();
var to = new CornerRadius();
var thickness1 = new CornerRadius();
var thickness2 = new CornerRadius();
bool flag1 = false;
bool flag2 = false;
switch (this._AnimationMode)
{
case AnimationMode.Automatic:
from = defaultOriginValue;
to = defaultDestinationValue;
flag1 = true;
flag2 = true;
break;
case AnimationMode.From:
from = this._keyValues[0];
to = defaultDestinationValue;
flag2 = true;
break;
case AnimationMode.To:
from = defaultOriginValue;
to = this._keyValues[0];
flag1 = true;
break;
case AnimationMode.By:
to = this._keyValues[0];
thickness2 = defaultOriginValue;
flag1 = true;
break;
case AnimationMode.FromTo:
from = this._keyValues[0];
to = this._keyValues[1];
if (this.IsAdditive)
{
thickness2 = defaultOriginValue;
flag1 = true;
break;
}
break;
case AnimationMode.FromBy:
from = this._keyValues[0];
to = AnimationHelpers.AddCornerRadius(this._keyValues[0], this._keyValues[1]);
if (this.IsAdditive)
{
thickness2 = defaultOriginValue;
flag1 = true;
break;
}
break;
}
if (flag1 && !AnimationHelpers.IsValidAnimationValueCornerRadius(defaultOriginValue))
{
throw new InvalidOperationException("Animation_Invalid_DefaultValue");
}
if (flag2 && !AnimationHelpers.IsValidAnimationValueCornerRadius(defaultDestinationValue))
{
throw new InvalidOperationException("Animation_Invalid_DefaultValue");
}
if (this.IsCumulative)
{
int? currentIteration = animationClock.CurrentIteration;
int num2 = 1;
double factor = (double)(currentIteration.HasValue ? new int?(currentIteration.GetValueOrDefault() - num2) : new int?()).Value;
if (factor > 0.0)
{
thickness1 = AnimationHelpers.ScaleCornerRadius(AnimationHelpers.SubtractCornerRadius(to, from), factor);
}
}
return(AnimationHelpers.AddCornerRadius(thickness2, AnimationHelpers.AddCornerRadius(thickness1, AnimationHelpers.InterpolateCornerRadius(from, to, num1))));
}