How to get an object's direction relative to the camera?-CodePudding

I only know how to do it when the camera's Y rotation is set to 0.

float Angle = transform.rotation.eulerAngles.y;
             if (Angle > 315 || Angle < 45)
                 dosomething();
             else if (Angle < 225)
                 dosomething();
             else if (Angle < 135)
                 dosomething();
             else
                 dosomething();

However, this won't work when the camera rotates, since the "forward angle" is not 0. I seriously don't know how to the angle calculation when the angle goes over 360.

CodePudding user response：

If want to know the difference between an object's facing direction and the camera's facing direction: you can try this.

 float angle = Vector3.Angle(camera.main.transform.forward, object.transform.forward);