[vtkusers] about volume rendering using vtkFixedPointVolumeRayCastMapper on RGBA data set

[Randall Hand]

In regards to this &  your previous email, look at the documentation for the
vtkVolumeProperty (
http://www.vtk.org/doc/nightly/html/classvtkVolumeProperty.html ).
Specificaly the "IndependentComponentsOn/Off" methods.

You can map colors to a single component (through a lookup table),
2-component (RGB and Opacity), or 4 component (Each of the 4 separately) by
setting IndependentComponentsOff .

On 8/1/06, Yixun Liu <yxliu at fudan.edu.cn> wrote:
>
>  Hi,
>
> I have a 256x156x100 color image with 4 components. How does
> vtkFixedPointVolumeRayCastMapper distinguish the four components are
> denpendent or not?
>
> Sincerely,
>
> Yixun Liu
>
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-- 
----------------------------------------
Randall Hand
Visualization Scientist
ERDC MSRC-ITL
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