/// <summary>
/// Override this to provide your own offset on every frame.
/// </summary>
/// <param name="frameInfo"></param>
/// <returns></returns>
public Vector2 GetOffset(LottieFrameInfo <Vector2?> frameInfo)
{
if (Value == null)
{
throw new ArgumentException("You must provide a static value in the constructor " +
", call setValue, or override getValue.");
}
return(Value.Value);
}
public override float?GetValue(LottieFrameInfo <float?> frameInfo)
{
float originalValue = MiscUtils.Lerp(
frameInfo.StartValue.Value,
frameInfo.EndValue.Value,
frameInfo.InterpolatedKeyframeProgress
);
float offset = GetOffset(frameInfo);
return(originalValue + offset);
}
public override int?GetValue(LottieFrameInfo <int?> frameInfo)
{
int originalValue = MiscUtils.Lerp(
frameInfo.StartValue.Value,
frameInfo.EndValue.Value,
frameInfo.InterpolatedKeyframeProgress
);
int newValue = GetOffset(frameInfo);
return(originalValue + newValue);
}
public override Vector2?GetValue(LottieFrameInfo <Vector2?> frameInfo)
{
var point = new Vector2(
MiscUtils.Lerp(
frameInfo.StartValue.Value.X,
frameInfo.EndValue.Value.X,
frameInfo.InterpolatedKeyframeProgress),
MiscUtils.Lerp(
frameInfo.StartValue.Value.Y,
frameInfo.EndValue.Value.Y,
frameInfo.InterpolatedKeyframeProgress)
);
var offset = GetOffset(frameInfo);
point.X += offset.X;
point.Y += offset.Y;
return(point);
}
/// <summary>
/// Override this if you haven't set a static value in the constructor or with SetValue.
/// </summary>
/// <param name="frameInfo"></param>
/// <returns></returns>
public virtual T GetValue(LottieFrameInfo <T> frameInfo)
{
return(Value);
}