Camera: Properly update world matrix prior to use

[WestLangley]

No description provided.

[WestLangley]

@Mugen87 I think this completes the remaining use cases. :-)

[Mugen87]

@WestLangley What do you think about introducing default parameters to updateWorldMatrix()? I mean:

updateWorldMatrix: function ( updateParents = true, updateChildren = false ) {

This seems to be a proper default for a world matrix update routine.

[WestLangley]

@Mugen87

The method has implied default values of false and false. I did that intentionally when I implemented the method.

If you would like default values specified explicitly, I would suggest:

updateWorldMatrix: function ( updateParents = false, updateChildren = false ) {

I think @donmccurdy would be particularly happy with that decision. :-)

This makes it clear that it is the user's responsibility to traverse the tree based on the user's use case.

[DefinitelyMaybe]

This makes it clear that it is the user's responsibility to traverse the tree based on the user's use case.

that sounds like the way to go IMO

[WestLangley]

Again, let's ensure the method returns the correct answer as a first step. We can improve it later.

[WestLangley]

This PR is a follow-up to #19969.

[Mugen87]

@mrdoob Since #19969 was merged, this PR should go in, too. Unlike #20221, this PR only improves the already existing world matrix computation.

[mrdoob]

Thanks!