-(void)updateMask{
    // float newW = endPoint.x - startPoint.x;
    // float newH = endPoint.y - startPoint.y;

    mask.frame = self.layer.bounds;
    CGRect biggerRect = CGRectMake(mask.frame.origin.x,
                                   mask.frame.origin.y,
                                   mask.frame.size.width,
                                   mask.frame.size.height);
    // maskRect = CGRectMake(startPoint.x, startPoint.y, newW, newH);

    UIBezierPath *maskPath = [UIBezierPath bezierPath];
    [maskPath moveToPoint:CGPointMake(CGRectGetMinX(biggerRect), CGRectGetMinY(biggerRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMinX(biggerRect), CGRectGetMaxY(biggerRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMaxX(biggerRect), CGRectGetMaxY(biggerRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMaxX(biggerRect), CGRectGetMinY(biggerRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMinX(biggerRect), CGRectGetMinY(biggerRect))];

    [maskPath moveToPoint:CGPointMake(CGRectGetMinX(controlsRect), CGRectGetMinY(controlsRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMinX(controlsRect), CGRectGetMaxY(controlsRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMaxX(controlsRect), CGRectGetMaxY(controlsRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMaxX(controlsRect), CGRectGetMinY(controlsRect))];
    [maskPath addLineToPoint:CGPointMake(CGRectGetMinX(controlsRect), CGRectGetMinY(controlsRect))];

    mask.path = maskPath.CGPath;
    [mask setFillRule:kCAFillRuleEvenOdd];
    mask.fillColor = [[UIColor redColor] CGColor];
    self.layer.mask = mask; // This should probably handle its own mask later..


}