Optimize Outline rendering of MMD

[takahirox]

In outline rendering pass, I set visible = false for the objects not to be needed rendering outline
like the stage of webgl_loader_mmd_audio example.

[mrdoob]

Have you considered using Object3D's layer?

[takahirox]

Not yet.
Should I use layers rather than set/restore visible for the good design or smt?

[mrdoob]

Yes. I haven't looked at it in detail, but usually these visible hacks can be done with layers instead.

[takahirox]

I see, I'll try with layers.

[takahirox]

Updated.

I'm feeling like I want the following functions
(the names should be renamed with the appropriate ones tho)
in Layers

enable2: function ( layers ) {

    this.mask |= layers.mask;

},

disable2: function ( layers ) {

    this.mask &= ~ layers.mask;

},

[mrdoob]

What are those functions for?

[takahirox]

For example, to hide some objects from a certain camera like I do in this change.

To do that with the current enable/disable(), the code would be

object.layers.disable( camera.layers.mask >> 1 )

But it isn't straightforward.

[mrdoob]

Why don't you directly create the setVisible and restoreVisible functions here?

[takahirox]

Because I couldn't point MMDHelper by using this here.
And to use camera passed to this method.

[mrdoob]

setInvisible( this, object )? 😊

[takahirox]

callback function for traverse doesn't accept any arguments except for object :(

[mrdoob]

I see I see!

[mrdoob]

Thanks!