Most guideline tools rely on simple geometry. The most common visual aids you will see on iOS apps are:

A is an incredible resource for accelerating your learning curve. Whether you are using AR to scan a real table or analyzing geometry in a mobile game, these tools demystify the physics of pool.

: Extend the path of the cue ball and target ball to the very edge of the table.

: Users can often adjust the line width to match the ball's diameter for better visual alignment. Development Overview