[vtkusers] what kind input data does vtkstreamline need?

[Will Schroeder]

Zhao-

Streamlines need a vector field (which in your case should be a 
representation of blood flow). That is, the volume that you isocontoured 
should have vectors associated with it, and should be the input to the 
streamline filter. Then of course you'll want to specify a starting point 
or points for the streamline.

Will

At 11:05 AM 5/16/2005, Zhao Yongqiang wrote:
>Hi all,
>       After i get the segmented data, i use marching cube to visualize 
> the blood vessel. Then,  I want to use vtkstreamline to simulate blood 
> flow. But when i use the output of the marching cube as the input of 
> vtkstreamline , it said that "No vector data defined!".
>      Can someone tell me the reason? and how to solve it?
>      Thanks in advance!
>
>
>Zhao Yongqiang
>2005.5.16
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