how to calculate angle difference

To calculate the angle difference between two angles, you can use the following formula:

angleDifference = ((angle2 - angle1) + 180) % 360 - 180

This formula will return the angle difference in degrees, between -180 and 180.

Here's an example of how you might use this formula in Java:

double angle1 = 45;
double angle2 = 135;

double angleDifference = ((angle2 - angle1) + 180) % 360 - 180;
System.out.println(angleDifference);  // Output: 90

This will calculate the angle difference between the two angles and print the result to the console.