divide(divide(gradient[2](gradient[1](gradient[2](sum(numbers('yyx'), numbers("per"))))), gradient[1](gradient[2](sum(numbers('yyx'), numbers("per"))))), gradient[2](gradient[1](gradient[2](sum(numbers('yyx'), numbers("per"))))))
Some images will appear differently when resized as some of the functions which generate images are sensitive to the scale. We're working to improve this.