public static float Ease(double linearStep, float acceleration, EEasingType type)
{
float easedStep = acceleration > 0 ? EaseIn(linearStep, type) :
acceleration < 0 ? EaseOut(linearStep, type) :
(float)linearStep;
return(MathHelper.Lerp(linearStep, easedStep, Math.Abs(acceleration)));
}
private static void OnEasingFunctionChanged(BindableObject bindable, EEasingType oldvalue, EEasingType newvalue)
{
var obj = bindable as BaseAnimationBehavior;
if (obj == null)
{
return;
}
obj.EasingType = newvalue;
}
public static float EaseOut(double linearStep, EEasingType type)
{
switch (type)
{
case EEasingType.Step: return(linearStep < 0.5 ? 0 : 1);
case EEasingType.Linear: return((float)linearStep);
case EEasingType.Sine: return(Sine.EaseOut(linearStep));
case EEasingType.Quadratic: return(Power.EaseOut(linearStep, 2));
case EEasingType.Cubic: return(Power.EaseOut(linearStep, 3));
case EEasingType.Quartic: return(Power.EaseOut(linearStep, 4));
case EEasingType.Quintic: return(Power.EaseOut(linearStep, 5));
}
throw new NotImplementedException();
}
protected static Easing ToEasing(EEasingType easingType)
{
switch (easingType)
{
case EEasingType.BounceIn:
return(Easing.BounceIn);
case EEasingType.BounceOut:
return(Easing.BounceOut);
case EEasingType.CubicIn:
return(Easing.CubicIn);
case EEasingType.CubicInOut:
return(Easing.CubicInOut);
case EEasingType.CubicOut:
return(Easing.CubicOut);
case EEasingType.Linear:
return(Easing.Linear);
case EEasingType.SinIn:
return(Easing.SinIn);
case EEasingType.SinInOut:
return(Easing.SinInOut);
case EEasingType.SinOut:
return(Easing.SinOut);
case EEasingType.SpringIn:
return(Easing.SpringIn);
case EEasingType.SpringOut:
return(Easing.SpringOut);
default:
return(Easing.Linear);
}
}
public static float EaseInOut(double linearStep, EEasingType easeInType, EEasingType easeOutType)
{
return(linearStep < 0.5 ? EaseInOut(linearStep, easeInType) : EaseInOut(linearStep, easeOutType));
}
public static float Calculate(EEasingMethod type, EEasingType method, float t)
{
return(Methods[(int)type * METHOD_COUNT + (int)method](t));
}
public static EasingDelegate Get(EEasingMethod type, EEasingType method)
{
return(Methods[(int)type * METHOD_COUNT + (int)method]);
}
public EasingFunc(float duration, EEasingMethod method = EEasingMethod.Sine, EEasingType type = EEasingType.In)
{
m_Method = EasingHelper.Get(method, type);
Duration = duration;
}