package speiger.src.coreengine.math.value;

import speiger.src.coreengine.math.MathUtils;

public class CubicValue extends Value
{
	final float startValue;
	final float startHelperValue;
	final float endHelperValue;
	final float endValue;
	boolean smooth = false;
	
	public CubicValue(float duration, float startValue, float startHelper, float endHelper, float endValue)
	{
		this(0F, duration, startValue, startHelper, endHelper, endValue);
	}
	
	public CubicValue(float start, float duration, float startValue, float startHelper, float endHelper, float endValue)
	{
		super(start, duration);
		this.startValue = startValue;
		startHelperValue = startHelper;
		endHelperValue = endHelper;
		this.endValue = endValue;
	}
	
	public CubicValue setSmooth()
	{
		smooth = true;
		return this;
	}
	
	public CubicValue setSmooth(boolean smooth)
	{
		this.smooth = smooth;
		return this;
	}
	
	@Override
	protected float calculateProgress(float time)
	{
		if(smooth)
		{
			float first = MathUtils.smoothQuadraticCurve(startValue, startHelperValue, endHelperValue, time);
			float second = MathUtils.smoothQuadraticCurve(startHelperValue, endHelperValue, endValue, time);
			return MathUtils.smoothLerp(first, second, time);
		}
		float first = MathUtils.quadraticCurve(startValue, startHelperValue, endHelperValue, time);
		float second = MathUtils.quadraticCurve(startHelperValue, endHelperValue, endValue, time);
		return MathUtils.lerp(first, second, time);
	}
	
	@Override
	protected void onFinished()
	{
		finishProgress();
	}
	
}