How to calculate position and rotation

Questions
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1

Hi,
AMesh’s position=[1, 1, 1],rotation=[Math.PI / 3, 0, 0] ,group’s position=[2, 2, 2],rotation=[Math.PI / 4, 0, 0] ,I put the AMesh in the Group. How to calculate the position and rotation after placement so that the position and rotation are consistent.
Here is link

2

Local transforms within (direct) parent - Object3D.position / Object3D.rotation / Object3D.scale / Object3D.quaternion

World transforms regardless of parent hierarchy - Object3D.getWorldPosition / Object3D.getWorldRotation / Object3D.getWorldScale / Object3D.getWorldQuaternion

3

Hi mjurczyk,
here is my link ,Stage presets, gltfjsx (forked) - CodeSandbox
I calculate it’s position and rotation, but it cannot be aligned with the coordinates of amesh.

4

Can’t see a point of using that second group in this case tho

5

I need to move to the second group, I need to do an animation, so I need to calculate the coordinates after the movement to be visually consistent

6

@donmccurdy I found this related question, but I see how to convert this world coordinates to local coordinates, also including his rotation information conversion, but I still don’t know how to do a conversion, can you help me

7

I find a way to relove.

    GMesh.updateMatrixWorld();
    const obj = new THREE.Object3D();
    obj.position.set(AMesh.position.x, AMesh.position.y, AMesh.position.z);
    obj.rotation.set(AMesh.rotation.x, AMesh.rotation.y, AMesh.rotation.z);
    obj.applyMatrix4(GMesh.matrixWorld.invert());
    const BMeshPosition = obj.position;
    const BMeshQuaternion = obj.quaternion;