function _updateSpring() {
        var springValue = this._scroll.scrollForceCount ? undefined : this._scroll.springPosition;
        if (this._scroll.springValue !== springValue) {
            this._scroll.springValue = springValue;
            if (springValue === undefined) {
                if (this._scroll.springForceId !== undefined) {
                    this._scroll.pe.detach(this._scroll.springForceId);
                    this._scroll.springForceId = undefined;
                    //_log.call(this, 'disabled spring');
                }
            }
            else {
                if (this._scroll.springForceId === undefined) {
                    this._scroll.springForceId = this._scroll.pe.attach(this._scroll.springForce, this._scroll.particle);
                }
                this._scroll.springEndState.set1D(springValue);
                this._scroll.pe.wake();
                //_log.call(this, 'setting spring to: ', springValue, ' (', this._scroll.springSource, ')');
            }
        }
    }
function _updateSpring() {
        var springValue = this._scroll.scrollForceCount ? undefined : this._scroll.springPosition;
        if (this._scroll.springValue !== springValue) {
            this._scroll.springValue = springValue;
            if (springValue === undefined) {
                if (this._scroll.springForceId !== undefined) {
                    this._scroll.pe.detach(this._scroll.springForceId);
                    this._scroll.springForceId = undefined;
                    
                }
            }
            else {
                if (this._scroll.springForceId === undefined) {
                    this._scroll.springForceId = this._scroll.pe.attach(this._scroll.springForce, this._scroll.particle);
                }
                this._scroll.springEndState.set1D(springValue);
                this._scroll.pe.wake();
                
            }
        }
    }
function _updateSpring ( ) { var springValue = this . _scroll . scrollForceCount ? undefined : this . _scroll . springPosition ; if ( this . _scroll . springValue !== springValue ) { this . _scroll . springValue = springValue ; if ( springValue === undefined ) { if ( this . _scroll . springForceId !== undefined ) { this . _scroll . pe . detach ( this . _scroll . springForceId ) ; this . _scroll . springForceId = undefined ; //_log.call(this, 'disabled spring'); } } else { if ( this . _scroll . springForceId === undefined ) { this . _scroll . springForceId = this . _scroll . pe . attach ( this . _scroll . springForce , this . _scroll . particle ) ; } this . _scroll . springEndState . set1D ( springValue ) ; this . _scroll . pe . wake ( ) ; //_log.call(this, 'setting spring to: ', springValue, ' (', this._scroll.springSource, ')'); } } }
Helper function for logging debug statements to the console.
 /*function _log(args) {
if (!this.options.debug) {
return;
}
var message = this._debug.commitCount + ': ';
for (var i = 0, j = arguments.length; i < j; i++) {
var arg = arguments[i];
if ((arg instanceof Object) || (arg instanceof Array)) {
message += JSON.stringify(arg);
}
else {
message += arg;
}
}
console.log(message);
} 
Sets the value for the spring, or set to `undefined` to disable the spring
Helper function for logging debug statements to the console . / * function _log ( args ) { if ( !this . options . debug ) { return ; } var message = this . _debug . commitCount + : ; for ( var i = 0 j = arguments . length ; i < j ; i ++ ) { var arg = arguments [ i ] ; if (( arg instanceof Object ) || ( arg instanceof Array )) { message + = JSON . stringify ( arg ) ; } else { message + = arg ; } } console . log ( message ) ; } Sets the value for the spring or set to undefined to disable the spring