public override void Start()
{
isStarted = true;
this.originalSize = new Vector2(sprite.Width, sprite.Height);
if (isFromNull)
{
fromScale = new Vector2(1, 1);
}
fromSize = UtilityHelper.MultiplyVector(this.originalSize, this.fromScale);
fromSize.X = (int)fromSize.X; fromSize.Y = (int)fromSize.Y;
toSize = UtilityHelper.MultiplyVector(this.originalSize, this.toScale);
toSize.X = (int)toSize.X; toSize.Y = (int)toSize.Y;
if (duration == 0)
{
sprite.SetSize(this.toSize);
if (!isInfinite)
{
this.Stop();
}
return;
}
velocity = UtilityHelper.CalculateVelocity(this.fromSize, this.toSize, duration);
Sign = UtilityHelper.CalculateSign(this.fromSize, this.toSize);
currentSize = this.fromSize;
if (isAnimatedFromOrigin)
{
currentSize = this.originalSize;
Sign = UtilityHelper.CalculateSign(currentSize, this.fromSize);
}
else
{
sprite.SetSize(this.currentSize);
}
CurrentTime = TimeSpan.Zero;
Duration = TimeSpan.FromSeconds(duration);
totalDistance = UtilityHelper.VectorAbs(Vector2.Subtract(toSize, fromSize));
if (graphFunction == null)
{
graphFunction = new ConstantGraphFunction(duration);
}
}