[vtkusers] Point order of faces in a cell

[Paul Edwards]

Hi Bill,

Thanks for the reply.  I was hoping to be able to deal with just the
vtkCell API rather than need to check a SafeDownCast for each of the
derived types...   Do you know if it is just vtkVoxel that is like this?
 Also, is there any requirement for the direction of the points for the
ones that do order the points around the polygon - either
clockwise/anticlockwise?

Thanks,
Paul


On 20 February 2014 15:13, Bill Lorensen <bill.lorensen at gmail.com> wrote:

> Each face for a voxel is returned with a pixel's point ordering. They
> need to be traversed as you would a pixel.
> Figure 5-2 in the VTK book shows the ordering.
>
> I also found a figure on this page:
> http://vislab.eas.ualberta.ca/VisLab/Data.aspx
>
> Bill
>
> On Thu, Feb 20, 2014 at 9:47 AM, Paul Edwards <paul.m.edwards at gmail.com>
> wrote:
> > Hi,
> >
> > I had assumed (wrongly) that the point order for a face when calling
> > vtkCell::GetFace would traverse the edges and make up the polygon for
> that
> > face.  Is it a bug that this isn't the case for vtkVoxel?  Or, is there a
> > another way I can do this?
> >
> > Thanks in advance,
> > Paul
> >
> > _______________________________________________
> > Powered by www.kitware.com
> >
> > Visit other Kitware open-source projects at
> > http://www.kitware.com/opensource/opensource.html
> >
> > Please keep messages on-topic and check the VTK FAQ at:
> > http://www.vtk.org/Wiki/VTK_FAQ
> >
> > Follow this link to subscribe/unsubscribe:
> > http://www.vtk.org/mailman/listinfo/vtkusers
> >
>
>
>
> --
> Unpaid intern in BillsBasement at noware dot com
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.vtk.org/pipermail/vtkusers/attachments/20140220/e957b9cf/attachment.html>