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https://github.com/photonstorm/phaser
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34 lines
467 B
TypeScript
34 lines
467 B
TypeScript
/// <reference path="../../_definitions.ts" />
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/**
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* Phaser - Easing - Quadratic
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*
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* For use with Phaser.Tween
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*/
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module Phaser.Easing {
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export class Quadratic {
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public static In(k) {
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return k * k;
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}
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public static Out(k) {
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return k * (2 - k);
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}
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public static InOut(k) {
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if ((k *= 2) < 1) return 0.5 * k * k;
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return -0.5 * (--k * (k - 2) - 1);
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}
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}
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}
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