public void Update(AlphaBehaviour alphaBehaviour, float destination, float fadeStep = 0.1f)
{
if (alphaBehaviour == null)
{
throw new ArgumentNullException(nameof(alphaBehaviour));
}
if (destination < 0)
{
throw new ArgumentOutOfRangeException("fade to destination is below 0");
}
if (destination > 1)
{
throw new ArgumentOutOfRangeException("fade to destination is above 1");
}
//if the step is somethign in between the source value and the optimal value. stop tweaking it.
var valueDifference = (MathF.Abs(alphaBehaviour.Alpha - destination));
var fadeStepAbs = MathF.Abs(fadeStep);
if (MathF.Abs(valueDifference - fadeStepAbs) <= fadeStepAbs)
{
alphaBehaviour.Alpha = destination;
}
if (destination > alphaBehaviour.Alpha)
{
alphaBehaviour.Alpha += MathF.Abs(fadeStep);
}
if (destination < alphaBehaviour.Alpha)
{
alphaBehaviour.Alpha -= MathF.Abs(fadeStep);
}
}
public VisualText(string registeredFontName = null)
{
SetRegisteredFontName(registeredFontName);
Position = new MovementBehaviour();
Alpha = new AlphaBehaviour();
Rotation = new RotationBehaviour();
Color = Color.White;
Scale = Vector2.One;
}
