koobas.hobune.stream
This question was
closed Feb 27, 2014 at 02:56 AM by
DiligentGear for the following reason:
Problem is not reproducible or outdated
How to get an object's direction relative to the camera?
I only know how to do it when the camera's Y rotation is set to 0.
This's what I did:
void GetDirection () {
float headingAngle = transform.rotation.eulerAngles.y;
if (headingAngle > 315 || headingAngle < 45)
anim.SetBool("GoForward",true);
else if (headingAngle < 225)
anim.SetBool("GoLeft",true);
else if (headingAngle < 135)
anim.SetBool("GoBackward",true);
else
anim.SetBool("GoRight",true);
}
However this won't work when 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.
EDIT: For example, how can I tell whether the player is heading north/south/west/east?
If you simply want to know the difference between an object's facing direction and the camera's facing direction:
float angle = Vector3.Angle(camera.main.transform.forward, object.transform.forward);
I seriously don't know how to the angle calculation when the angle goes over 360. If your code work fine below 360 try saying something like this: if (MyAngle >=360) { MyAngle -= 360; } I dont know if this is what you are after but if it's not try explaining your situation a little bit more and give us more information about what is that u need.We can't guess on our own.Blockquote
I'm trying to find a generic method to deter$$anonymous$$e whether an angle is inside a certain sector as shown above.
I'm trying my best to do some explanations:
void GetDirection () {
float headingAngle = transform.rotation.eulerAngles.y;
// Facing direction of character
float cameraAngle = cameraTransform.rotation.eulerAngles.y;
// Facing direction of camera
if (headingAngle > ClampAngle(cameraAngle + 315) || headingAngle < ClampAngle(cameraAngle + 45))
// This "or" logic simple won't work
// For example, the current cameraAngle is 270.
// Then the forward range is (225,315), and left range is (135,225].
// In other word, logic of deter$$anonymous$$e left range is 135 < headingAngle < 225
// So if heading angle is 215, the relative direction should be left, right? Nope.
// Because the forward logic is (headingAngle > 225) || (headingAngle < 315)!
// Which always gives "forward"...
// What about "and" ?
if (headingAngle > ClampAngle(cameraAngle + 315) && headingAngle < ClampAngle(cameraAngle + 45))
// Try to do this example:
// Camera angle is 0, and heading angle is 350, which should be forward.
// In other word, the range is greater than 315 AND lower than 45, which makes no sense
}
