help! rotations !

NoDoubt

Im positioning then aiming my camera in code. but getting funky results. my code:

cam.global_transform.origin =Vector3(IslandCamPath1List[0].translation.x, IslandCamPath1List[0].translation.y, IslandCamPath1List[0].translation.z)
var global_pos = ent2.global_transform.origin
cam.look_at(global_pos, Vector3(0,0,1))

The position works as I expected it to as long as I call .origin on the transform. but the rotation is no where near close to pointing at the object i asked it to.

Any advice?

cybereality

What kind of game is it? The last parameter of look_at is up, which should almost always be

Vector3.UP

Unless you are doing something weird.

cam.look_at(global_pos, Vector3.UP)

NoDoubt

Old-school fly-by shooter. Camera rides on rails. I'll try that .UP and see what happens, not really doing anything weird but who knows.

NoDoubt

I'm always off by 90 or 180 degrees on one of the axis.. using radians, I can manually account for it but its different every time... follows no order or makes no sense to me.

Correction, it's not always 90 or 180, ... just anything but pointing at the object intended. I'm baffled, I've done every thing the documentation says to do, i've doubled checked all nodes matrix at 0,0,0... yet it still wont point towards the intended node in 3d space.

I give.

cybereality

So UP is correct for a 3D game. However, the orientation of your objects need to be aligned correctly. I believe for a camera, it should be facing the negative Z axis (opposite the blue arrow). And any child objects, need to be at 0, 0, 0 rotations (like if you have a gimbal and the camera is inside that, the camera would be at 0 rotation and the gimbal can be rotated). If you are not using a gimbal, and are using Euler angles, then you need a gimbal.

https://kidscancode.org/godot_recipes/3d/camera_gimbal/

There are ways to make it work with a single gimbal and Euler, or no gimbals at all and Quaternions, but they are more advanced, and you should try to understand the tutorial I posted first before attempting anything more complex.

NoDoubt

This is exactly what happened to me, the gimbal approach works great. I searched all over google before asking, i just didnt find anything, i've book marked that lovely site.

cybereality

Yeah, of course.