Squiggle UIBezierPath

UIBezierPathSquiggle

- (void) drawSquiggleInRect:(CGRect)rect {
    
    // Assure positive values
    rect = CGRectStandardize(rect);
    
    // Find anchor points
    CGPoint anchorLowerLeft = CGPointMake(rect.origin.x, rect.origin.y + rect.size.height);
    CGPoint anchorTopRight = CGPointMake(rect.origin.x + rect.size.width, rect.origin.y);
    
    // 10.0 works pretty good!
    // 10% of the width
    CGFloat offset = rect.size.width * 0.1;//10.0;
    
    // Left control offset_X: -10 -- offset_Y -(height * 2.0)
    CGPoint topControlPointOne = CGPointMake(anchorLowerLeft.x - offset, anchorLowerLeft.y - (rect.size.height * 2.0) - (offset / 2.0));
    CGPoint topControlPointTwo = CGPointMake(anchorTopRight.x - offset, anchorLowerLeft.y + offset);
    
    CGPoint lowerControlPointOne = CGPointMake(anchorTopRight.x + offset, anchorTopRight.y + (rect.size.height * 2.0) + (offset / 2.0));
    CGPoint lowerControlPointTwo = CGPointMake(anchorLowerLeft.x + offset, anchorTopRight.y - offset);
    
    UIBezierPath * path = [UIBezierPath new];
    [path addClip];
    path.lineJoinStyle = kCGLineJoinRound;
    path.lineWidth = 2.0;
    
    [path moveToPoint:anchorLowerLeft];
    [path addCurveToPoint:anchorTopRight controlPoint1:topControlPointOne controlPoint2:topControlPointTwo];
    [path addCurveToPoint:anchorLowerLeft controlPoint1:lowerControlPointOne controlPoint2:lowerControlPointTwo];
    [path closePath];
    
    [path stroke];
}