vendor/kinetic-v5.1.0.js
function() {
            var a = Kinetic.Animation,
                animations = a.animations,
                len = animations.length,
                n;

            for(n = 0; n < len; n++) {
                if(animations[n].id === this.id) {
                    return true;
                }
            }
            return false;
        }
function() {
            var a = Kinetic.Animation,
                animations = a.animations,
                len = animations.length,
                n;

            for(n = 0; n < len; n++) {
                if(animations[n].id === this.id) {
                    return true;
                }
            }
            return false;
        }
function ( ) { var a = Kinetic . Animation , animations = a . animations , len = animations . length , n ; for ( n = 0 ; n < len ; n ++ ) { if ( animations [ n ] . id === this . id ) { return true ; } } return false ; }
determine if animation is running or not.  returns true or false
@method
@memberof Kinetic.Animation.prototype
determine if animation is running or not . returns true or false