Modelviewer: Show invisible surfaces and tag points

[robn]

A nice toggle to show docking surfaces, decal/label surfaces and tag points would be useful.

[Luomu]

Docking surfaces are already shown, no? Red in "collision mesh" view.

[robn]

Ooh, I never noticed that! Very nice!

[fluffyfreak]

This is useful, I've hacked in something similar to show my docking nodes but without an on-screen toggle.

That was mostly copied from the existing red-wireframe "collision mesh" view.

[Luomu]

There's a commented out bit in MatrixTransform::Render that draws a little XYZ widget on each node, try that.

I'll do something proper, but I don't quite know what the GUI should be, how many checkboxes can one squeeze on the same screen

[robn]

A key toggle would be fine for now. I have an item on my list somewhere to make the UI nicer. Don't hold back adding features just for that!

[Web-eWorks]

Partially fixed in #5010, the only thing that's left is showing label points.