[vtkusers] Want: Data Set keeps updating on render window

[Chao Liang]

Hi, VTKers,

I have a question when I try to visualize a huge amount of data set. I am
wondering if the following approach is achievable or not in VTK?

Say, I have a large multiblock data set. Among these blocks, there are
coarse meshes and fine meshes. Say, from the coarsest to finest, I denote
them as mesh = 2, 4, 8, 16, 32, etc. Instead of showing the whole data set
at one time on render window, what I want to do is as follows:

>From the very beginning, I just suppose all blocks are the coarsest, i.e.,
mesh = 2, so I treat the whole data set as coarsest mesh and show it on
render window; then after this is done, I pick up those blocks whose mesh =
4 and show them on render window again, but not as another object, I want
somehow update the previous renderer to make it seems the plot is keeping
updating; then next step, showing those blocks whose mesh = 8, 16, 32, etc.
In this way, on the render window, the plot keeps updating, from the
coarsest to the finest.

I don't know if I can achieve this or not in VTK? If it can be done, please
give me some advice and idea how to do it?
Thanks in advance for any help.

Chao
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