# Change in TransformNode.lookAt() from 3.3 -\> 4.x **URL:** \ **Category:** Questions\ **Created:** [September 25, 2019, 5:25am UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858 "2019-09-25T05:25:25Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![brianzinn](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/brianzinn/32/28013_2.png) [@brianzinn](https://forum.babylonjs.com/u/brianzinn)\ **Post date:** [September 25, 2019, 5:25am UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/1 "2019-09-25T05:25:25Z")
I am converting GUI code to latest version. Here is an old playground of mine that looks right in v3.3: [https://www.babylonjs-playground.com/#Q81PBV#1](https://www.babylonjs-playground.com/#Q81PBV#1) In latest versions (besides % warnings and other oddities) the mesh plane no longer faces the camera. I think it may be in a stored translation/billboard - was already digging a bit… I will be checking it out fully this weekend to PR, but just wanted to share here in case anybody had any thoughts. I tried simple 180 degree correction `lookAt(camera.position, Math.PI / 2)`, but it’s not just because it’s the backface 🙂 ---
**Author:** ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)\ **Post date:** [September 25, 2019, 11:32am UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/2 "2019-09-25T11:32:17Z")
Why dont you use the billboard mode? [https://www.babylonjs-playground.com/#Q81PBV#12](https://www.babylonjs-playground.com/#Q81PBV#12) ---
**Author:** ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)\ **Post date:** [September 25, 2019, 11:33am UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/3 "2019-09-25T11:33:16Z")
But that didnt answer your question 🙂 I honestly have no idea why it happened, I can only assume that it was something repaired in the math or the actual lookAt function. ---
**Author:** ![adam](https://avatars.discourse-cdn.com/v4/letter/a/4af34b/32.png) [@adam](https://forum.babylonjs.com/u/adam)\ **Post date:** [September 25, 2019, 1:45pm UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/4 "2019-09-25T13:45:40Z")
I remember @Deltakosh saying that they changed lookAt so that it uses the positive z axis instead of the negative z. Something like that. This should have been added to the breaking changes section of the release notes. I wasn’t able to find it there, though. ---
**Author:** ![Deltakosh](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/deltakosh/32/26635_2.png) [@Deltakosh](https://forum.babylonjs.com/u/Deltakosh)\ **Post date:** [September 25, 2019, 2:15pm UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/5 "2019-09-25T14:15:52Z")
Yep it was actually a bug in the look at function ---
**Author:** ![brianzinn](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/brianzinn/32/28013_2.png) [@brianzinn](https://forum.babylonjs.com/u/brianzinn)\ **Post date:** [September 25, 2019, 6:55pm UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/6 "2019-09-25T18:55:05Z")
It seems less intuitive that I have to have a plane with GUI attached to look **away** from the camera to see the “front” face (while BILLBOARDMODE\_ALL shows correctly facing). I will do more investigation - Thanks for the feedback and tips 🙂 ie: this has the GUI not mirrored: plane.lookAt(camera.position.add(camera.getForwardRay().direction.scale(50))) ---
**Author:** ![Deltakosh](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/deltakosh/32/26635_2.png) [@Deltakosh](https://forum.babylonjs.com/u/Deltakosh)\ **Post date:** [September 25, 2019, 8:22pm UTC](https://forum.babylonjs.com/t/change-in-transformnode-lookat-from-3-3-4-x/5858/7 "2019-09-25T20:22:40Z")
> [@brianzinn](#): > > Math.PI / 2 this should work as well: [https://www.babylonjs-playground.com/#Q81PBV#13](https://www.babylonjs-playground.com/#Q81PBV#13)