Thank you for updating basic3D, but this is not what I wanted as it disrupts the parent-child hierarchy of the three object

[WREQI]

Thank you for updating basic3D, but this is not what I wanted. It breaks the parent-child hierarchical relationship of the three object. I hope it can support updating the three object in a non-invasive way as shown in the figure below, which has the least impact on the project. Currently, I still cannot use this method

[WREQI]

The Three.js object in my project has a strict parent-child hierarchical relationship. You cannot arbitrarily add a parent container group to it.

[lo-th]

i use specific scene and object3d for multiple reasons
_performance
_limite number of geometry
_not update the object unnecessarily
-standardization...

if you object is already linked to other object is not the same matrix
This position reference is not the same.

In this case, it's more up to you to adapt your project than me.
I'll will see, but it would complicate the code too much and completely break performance.

[WREQI]

Can you provide an API that only updates the body and allows me to associate the body with the mesh copy location myself? @lo-th

[lo-th]

think like physics side is like clone of three scene but without group or parent

each time you add object to another in three there matrix is multiply by inverse matrix of parent.
I often advise avoiding too many levels, as this makes the calculations much more complex and slow.

also for update i disable default autoUpdate of object to keep syncro with physics side.
all object is update after physics pass not after three pass.

Unless if you don't use the worker phy and three is update at same time
but on complex simulation is better to desynchronize

[lo-th]

maybe send me a simple example of what you try to do

[WREQI]

I want to set the physics of the model in the editor, similar to Blender, so that it should not disrupt the hierarchical relationship of objects in the original scene