p5.js rotationZ Event
The system variable rotationZ in p5.js is responsible for the rotation of mobile devices (smartphones and tablets) always along the z-axis. It can be used in the draw() function to continuously get the current rotation along the z-axis. If the graphics angleMode() is set to DEGREES, then the value will be in the range of 0 to 360. When it is set to RADIANS, the value will be 0 to 2*PI. This variable is only available for devices with a built-in compass.
Note: The order the rotations are called is important if all the three variables are used together. It is required to call them in the order Z, Y, and X to prevent inconsistencies.