[vtkusers] surface expansion

[Richard Brown]

Wonderful, thanks a lot guys. 

Regards,
Richard

> On 19 Apr 2016, at 17:29, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> 
> Here is a c++ example. When I get a chance, I'll add it to the wiki examples...
> Try it with this file and a scale factor of 5 (second argument).
> https://raw.githubusercontent.com/lorensen/VTKWikiExamples/master/Testing/Data/Torso.vtp
> 
> On Tue, Apr 19, 2016 at 9:12 AM, David Gobbi <david.gobbi at gmail.com> wrote:
>> I don't know of any example that does specifically what you want.
>> But the pipeline would go something like this:
>> 
>> 1) use vtkPolyDataNormals to compute normals at each point.
>> 
>> 2) feed the output of vtkPolyDataNormals into vtkWarpVector.
>> 
>> 3) tell vtkWarpVector to use the normals, and give it a scale factor:
>> 
>> warp.SetInputConnection(norms.GetOutputPort())
>> 
>> warp.SetInputArrayToProcess(0, 0, 0,
>>  vtkDataObject.FIELD_ASSOCIATION_POINTS,
>>  vtkDataSetAttributes.NORMALS)
>> 
>> warp.SetScaleFactor(5.0)
>> 
>> I've never actually tried this, but in theory, it should work.
>> 
>> - David
>> 
>> 
>> 
> 
> 
> 
> -- 
> Unpaid intern in BillsBasement at noware dot com
> <WarpSurface.cxx>