public void Change(float value, float deltaTime, float changePerSecond)
{
float dv = value - _value;
_value += Math.Min(deltaTime * changePerSecond, Math.Abs(dv)) * Math.Sign(dv);
_value = CgMath.Clamp(_value, _minValue, _maxValue);
}
//simple moving average with no weights applied
public static Func <float, float> Towards(float maxDelta, float startValue = 0.0f)
{
float bounds = maxDelta;
float value = startValue;
return((x) =>
{
float delta = CgMath.Clamp(x - value, -bounds, bounds);
value += delta;
return value;
});
}
public Vector2D InRectSpace(Vector2D v)
{
return(new Vector2D(
CgMath.Clamp(v.X - X, 0, Width),
CgMath.Clamp(v.Y - Y, 0, Height)));
}