topical media & game development
lib-flex-animation-code-10-gs-easing-Expo.ax
lib-flex-animation-code-10-gs-easing-Expo.ax
(swf
)
[ flash
]
flex
package gs.easing {
public class @ax-lib-flex-animation-code-10-gs-easing-Expo {
public static function easeIn(t:Number, b:Number, c:Number, d:Number):Number {
return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b - c * 0.001;
}
public static function easeOut(t:Number, b:Number, c:Number, d:Number):Number {
return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
}
public static function easeInOut(t:Number, b:Number, c:Number, d:Number):Number {
if (t==0) return b;
if (t==d) return b+c;
if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
}
}
}
(C) Æliens
19/08/2009
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