Hint: run in turbo mode. :-) Press "space" to clear the current rendering. Drag the slider to increase or decrease the amount of shadows. Press "s" to show the variable and "h" to hide the variable.
I added the shadow variable and the variety of line length. :) Credit to @thisandagain for the original project, "Lines - 002". Music: "Unwanted Lies" by @HEAVENBRAND. Everything else is by me. Enjoy! :D