[vtkusers] drawing bounding boxes as 3d solids

[Philip Winston]

What I'm doing so far is creating a vtkPolyData from the bounding boxes, 12
triangles per box.  This works okay but there are probably a lot of
interior triangles not contributing to the outter surface.

I'm wondering about two other approaches:
1) How to take my mesh and decimate it down to something lighter, but
preserving the outter surface exactly
2) Instead of making a mesh make a point could then compute some kind of
surface on the fly.

Any pointers on either of these is welcome.

-Philip



On Fri, Oct 28, 2011 at 3:26 PM, Philip Winston <pwinston at gmail.com> wrote:

> I have a 3d shape which as described by bunch of 2d bounding boxes
> (100,000's).  The boxes are divided into planes, maybe 1000-10,000 planes.
>  A single plane might have one bound box, or it might have several with
> intersect each other.  All coordinates are integers in the range 0...12000
> or so.
>
> What's the best way to draw this? I want to see it just as a solid surface
> representing the outter most portion of the boxes, a 3d solid opaque shape.
>
> Some of my initial thoughts:
> 1) Convert it to triangles and just draw an unstructured bag of triangles?
> 2) Convert it to triangles but decimate/optimize the mesh to eliminate
> interior triangles?
> 3) Use quads instead of triangles?
> 3) Use vtkImageData instead of triangles?
>
> I'm completely new to VTK, any pointers at all are welcome.
>
> -Philip
>
>
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