How to make an earth actor without continents, only meridians and parallels?

[Joey Mukherjee]

>How can I make an actor of the Earth -  a white ball with meridians and 
>parallels? 
>
>What vtk classes do I have to use to set up the pipeline?
>
>I thought about making texture, but it looks like not the best way to do it.


I've needed this too, but at present, this functionality isn't available in VTK. 

Possibly we can work together on this one...  What I've got now is something 
that makes a mercator style plot from the EarthActor, but it has a couple 
quirks.  This is completely different from what you asked for however, but if we 
can somehow make the meridians and parallels be part of the earth actor, then 
the equations would probably work on those lines as well...

Joey


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