[vtkusers] Giving lines a gradient opacity

[Eric Charles Woods]

I am wanting to display vector data as simple lines with 2 points, 
and I am currently using vtkLineSource ok.

Problem is, I would like to indicate the directions of the lines by 
having it fade from fully opaque to fully transparent.  To do this I 
would like to be able to give each endpoint a different opacity value.
Is this possible?

Even giving each endpoint a different colour value could be better 
than a kick in the pants.

Can anyone think of anything other than a kick in the pants?

thanks


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Eric Woods
Applied Management & Computing Division
Lincoln University
Ph   3253838 ext 8813
Cell 025 605 6021
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