[vtkusers] How TO

[Vincenzo Mormino]

Hello I need some information to do the transparence in the volume
> > rendering.I must visualize two object a brain and the sclerosis but
> > like two different volume in the same windows. So the brain must be 
> > transparent and sclerosis no. but I have difficult for use the 
> > piecewisefunction for find a value for a segment to pass to the 
> > function, I have read that exist the alpha channel but how I can use

> > this. I have read the example in the book of vkt but don't see 
> > anything about this alpha channel and the example for 
> > piecewisefunction don't talk how find the value for get the exactly 
> > opacity. So can you give me some detail example to how obtain this 
> > result or some information??
> > Thanks and bye
> > Vincenzo Mormino.