Preseve Child Rotation when parenting

[gamefan]

Hi,

I am in a situation in which I want to add a parent to a mesh without changing the mesh's world rotation. For that I subtracted the parent's rotation from child before parenting. Sometimes the meshes have rotations as Quaternions (for both parent and child) , so to make the subtraction I convert them to euler using Quaternion.toEulerAngles(). This works perfectly for some orientation but not for others. Is this logic right? I want to know if there is some other way of doing this.

[gamefan]

I have a playground http://www.babylonjs-playground.com/#KK6J9I#2

[adam]

You can use setParent or addChild for this:

https://github.com/BabylonJS/Babylon.js/blob/master/src/Mesh/babylon.abstractMesh.ts#L1823

with keepWorldPositionRotation set to true.

[gamefan]

Works like magic. Thanks a lot . I have updated the playground  : http://www.babylonjs-playground.com/#KK6J9I#4

[adam]

I just want to make sure you realize you don't need to use that makeParent function.  You can do this:

http://www.babylonjs-playground.com/#KK6J9I#5

[gamefan]

Yeah. Well, I am on 2.4. When I first saw your post, I searched for setParent in my babylon file. I wanted to use that but I didn't find it , so I thought its probably a new addition.