[vtkusers] Vector arrows form a solid patch. How to rectify??

[Karthik Krishnan]

You'll have to write your own actor wrapping around your existing code
and overriding RenderOpaqueGeometry. Its not hard. See several actors
in VTK/Rendering that scale their font size based on the size of the
viewport etc. You may have to do something similar scaling your glyphs
based on the parallel scale / view angle.

On Sat, Jan 23, 2010 at 12:49 PM, Rakesh Patil <rakeshthp at in.com> wrote:
> hello,
>
> When i display a vector plot using vtk, it is shown very small like a dot.
> And when i zoom into it, it gets more visible and big. But, i want it in
> such a way, that when i display it, at the initial stage itself, the vectors
> must be big enough that can be seen. And when we zoom into it, then the
> arrow size must proportionately become small. I Used setscalefactor for
> glyph object and got the arrow size increased.
>
> But where the data is very dense, there a solid patch is formed due to which
> i cannot make out whats the length of the arrow. So as we zoom in, the arrow
> size must be reduced so that at the denser location, i can differentiate
> among two vectors. How can i do this..??
>
> Thanks in advance
>
> Regards
> Rakesh
>
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_________________________________
Karthik Krishnan
Ph: +1 5188814919, +91 9538477060