Rotation Angle Issue

When transitioning an angle with value > 180 or < 0, using this function to fix the problem.

function properRotation(target_rotation,my_rotation,smooth) { var rot =target_rotation-my_rotation; while (rot<0) { rot += 360; } while (rot>180) { rot -= 360; } my_rotation += rot/smooth; return my_rotation; }

Thanks the thread from http://www.mail-archive.com/away3d-dev@googlegroups.com/msg02572.html

Case 2:

Simple as using

var diffAngle:Number = Math.atan2(Math.sin(angleTo - currentAngle),                  Math.cos(angleTo - currentAngle));

Example:

var currentAngle: Number = 0; var angleTo: Number = 120 * Math.PI / 180; var diffAngle:Number = Math.atan2(Math.sin(angleTo - currentAngle),              Math.cos(angleTo - currentAngle)); diffAngle = Math.round(diffAngle*180 / Math.PI); trace("diffAngle: " + diffAngle);