[vtkusers] How to color objects with RGB/HSV information?

[ALIZIER Julien AUSY]

Hi again,

This file works in ParaView :

<begin>
# vtk DataFile Version 3.0
####
ASCII
DATASET POLYDATA

POINTS 3 float
 0.0  0.0  0.0
 1.0  0.0  0.0
 0.0  1.0  0.0

POLYGONS 1 4
3 0 1 2

POINT_DATA 3
VECTORS colour unsigned_char
 255  0  0
 0  255  0
 0    0 255
<end>

-- Julien



-----Message d'origine-----
De : Immo Trinks [mailto:trinks at esc.cam.ac.uk]
Envoyé : jeudi 17 juin 2004 23:28
À : vtkusers at public.kitware.com
Objet : [vtkusers] How to color objects with RGB/HSV information?


Dear vtkUsers and vtkDeveloppers

Could you please help me with the following problem:
I have a polydata set with xyz points and RGB vectors assigned to the points

(see example below).
How can I color the pixels using RGB or HSV information?
Searching the archives and reading the book I haven't found any example 
explaining the assignment of three color values to an object via a lookup 
table.
I know how to color objects with one scalar value for each object.
But I do not understand how to assign color to objects using three RGB or
HSV 
values.
Is it correct to load the RGB information as vector or shall I use scalars?
I could as well provide HSV values instead of RGB if this would make the 
process easier.
Thank you very much for any help!

Immo