[vtkusers] Texture Mapping to a Cone

[Mischa Thesberg]

I am wondering what is the best way to map a texture to a cone?  Let's 
say the texture is a series of concentric circle based around the origin 
at the center of the jpg that I want to form the texture.  what 
classes/code/tricks should I use to map said jpg onto a cone so that the 
origin is at the tip of the cone and the rest is mapped to the cone with 
little to no overlap (I don't care what the bottom of the cone looks 
like).  Thank you for any help you can give me.