Babylon.js/Babylon/Animations/babylon.animatable.js

var BABYLON = BABYLON || {};

(function () {
    BABYLON._Animatable = function (target, from, to, loop, speedRatio) {
        this.target = target;
        this.fromFrame = from;
        this.toFrame = to;
        this.loopAnimation = loop;
        this.animationStartDate = new Date();
        this.speedRatio = speedRatio ? speedRatio : 1.0;
    };
    
    // Members
    BABYLON._Animatable.prototype.target = null;
    BABYLON._Animatable.prototype.animationStarted = false;
    BABYLON._Animatable.prototype.loopAnimation = false;
    BABYLON._Animatable.prototype.fromFrame = false;
    BABYLON._Animatable.prototype.toFrame = false;
    BABYLON._Animatable.prototype.speedRatio = 1.0;
    
    // Methods
    BABYLON._Animatable.prototype._animate = function () {

        // Getting time
        var now = new Date();
        var delay = now - this.animationStartDate;

        // Animating
        var running = false;
        var animations = this.target.animations;
        for (var index = 0; index < animations.length; index++) {
            var isRunning = animations[index].animate(this.target, delay, this.fromFrame, this.toFrame, this.loopAnimation, this.speedRatio);
            running = running || isRunning;
        }

        return running;
    };
})();