1package aurelienribon.tweenengine;
2
3import aurelienribon.tweenengine.equations.Back;
4import aurelienribon.tweenengine.equations.Bounce;
5import aurelienribon.tweenengine.equations.Circ;
6import aurelienribon.tweenengine.equations.Cubic;
7import aurelienribon.tweenengine.equations.Elastic;
8import aurelienribon.tweenengine.equations.Expo;
9import aurelienribon.tweenengine.equations.Linear;
10import aurelienribon.tweenengine.equations.Quad;
11import aurelienribon.tweenengine.equations.Quart;
12import aurelienribon.tweenengine.equations.Quint;
13import aurelienribon.tweenengine.equations.Sine;
14
15/**
16 * Collection of miscellaneous utilities.
17 *
18 * @author Aurelien Ribon | http://www.aurelienribon.com/
19 */
20public class TweenUtils {
21	private static TweenEquation[] easings;
22
23	/**
24	 * Takes an easing name and gives you the corresponding TweenEquation.
25	 * You probably won't need this, but tools will love that.
26	 *
27	 * @param easingName The name of an easing, like "Quad.INOUT".
28	 * @return The parsed equation, or null if there is no match.
29	 */
30	public static TweenEquation parseEasing(String easingName) {
31		if (easings == null) {
32			easings = new TweenEquation[] {Linear.INOUT,
33				Quad.IN, Quad.OUT, Quad.INOUT,
34				Cubic.IN, Cubic.OUT, Cubic.INOUT,
35				Quart.IN, Quart.OUT, Quart.INOUT,
36				Quint.IN, Quint.OUT, Quint.INOUT,
37				Circ.IN, Circ.OUT, Circ.INOUT,
38				Sine.IN, Sine.OUT, Sine.INOUT,
39				Expo.IN, Expo.OUT, Expo.INOUT,
40				Back.IN, Back.OUT, Back.INOUT,
41				Bounce.IN, Bounce.OUT, Bounce.INOUT,
42				Elastic.IN, Elastic.OUT, Elastic.INOUT
43			};
44		}
45
46		for (int i=0; i<easings.length; i++) {
47			if (easingName.equals(easings[i].toString()))
48				return easings[i];
49		}
50
51		return null;
52	}
53}
54