First i have to say that creating a “Canvas3D” like component in JME3 is pretty easy. Anyway, here’s my indecent proposal: a Canvas3D, to be added as an utility class in the jme3 utility package.
Code in the post that follows. Don’t ask why.
Add it to the “snippets” list of this group: http://hub.jmonkeyengine.org/groups/development-discussion-jme3/snippets/ There it has code highlights and you can update it. Its also a nice place to collect such things.
Cheers,
Normen