Feature Request: Display surfaces in volume space without loading a volume

[gdevenyi]

If I load surfaces right now without an accompanying volume, I don't get a "volume" view, so I can't compare surfaces easily.

[rdvincent]

So you would like Display to create a "blank" slice view window that just shows the outlines of the surfaces for each axis? This could be addressed by creating a dummy placeholder volume with coordinates that matched the extents of the loaded surfaces.

[gdevenyi]

Yes, I'd like a slice view of the objects if a volume isn't available.

[rdvincent]

@gdevenyi Do you care about what the background is? Should it be black, the lovely background colour, grey, etc.? Here's what I have right now with a black background, because the empty volume effectively has a uniform value of zero:

[gdevenyi]

The current colour is fine except if someone decides to segment in teal... perhaps it should be linked to the background colour of the volume?

[rdvincent]

@gdevenyi Well, in this case I'm just looking for a preference for the default slice background (currently black, above) against which the surfaces will be displayed.

[gdevenyi]

oh, sorry, I misinterpreted, yes, black is fine.

[rdvincent]

@gdevenyi OK this is checked in.

[gdevenyi]

Looks great, thanks!