signedAngle function

double signedAngle(
  1. double startAngle,
  2. double targetAngle
)

Implementation

double signedAngle(double startAngle, double targetAngle) {
  //return (startAngle - targetAngle).abs() % 360;
  return atan2(sin(startAngle - targetAngle), cos(startAngle - targetAngle));
}