[vtkusers] Transparent while preserving color

Matthias Binninger MatthiasBinninger at gmx.de
Wed Aug 3 02:34:26 EDT 2011

Thanks for you responses! What I have to display is a 3d path of some measurement points. These have (a bit simplified) to lie inside different spheric thresholds that are displayed together with other properties. The goal was to mimic existing 2d plots (projections) which somehow restricts how it should look like. I do like the idea to use wireframes, I'll see if that can be close enough to what I need. Greetings, Matthias 
----- Ursprüngliche Nachricht -----
Von: David Pont
Gesendet: 01.08.11 22:59 Uhr
An: Matthias Binninger, vtkusers at vtk.org
Betreff: RE: [vtkusers] Transparent while preserving color

Hi Matthias, a couple of suggestions:
-Use a Wireframe or even Points display mode, increasing line or point size might be useful;
-With Points you could also use ‘MaskPoints’;
-Use vtkShrinkPolyData to shrink the cells
Cheers Dave
David Pont
 Scientist - Forest Management Science
49 Sala Street, Private Bag 3020, Rotorua 3046, New Zealand
DDI +64 7 343 5663
www.scionresearch.com http://www.scionresearch.com/ 

From: vtkusers-bounces at vtk.org  [mailto: vtkusers-bounces at vtk.org ]  *On Behalf Of *Matthias Binninger
 *Sent:* Monday, 1 August 2011 7:31 p.m.
 *To:* vtkusers at vtk.org 
 *Subject:* [vtkusers] Transparent while preserving color

 For a visualization I need to display several colored 3d spheres, that might overlap or even be included completely in each other. Included spheres should be visible all the time. My solution was to make the spheres transparent.
 Unfortunately that means, that colors are not preserved, a red sphere in a green sphere in a yellow sphere in a blue sphere ... not much of the original color left.
 Is there a way to achieve the (physically uncorrect) behaviour of preserving the colors?



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