Ah, yes, I remember now... I came across that example and had trouble
getting the off screen rendering to work. I will try again, especially
since I was on VTK 5.10 when I tried previously. I'll report back if I have
any success with it.
Thanks!
On Wed, Oct 1, 2014 at 2:18 AM, Khlebnikov, Rostislav <
[email protected]> wrote:
> You might find this interesting:
> http://www.itk.org/Wiki/VTK/Examples/Cxx/PolyData/ExternalContour
>
> Probably not the most efficient approach but it should work.
>
> Rostislav.
>
>
>
>
> On 1 Oct 2014, at 06:40, "Taylor Braun-Jones" <[email protected]>
> wrote:
>
> I'm also very interested in something along these lines. Sebastian,
> your silhouette idea using vtkPolyDataSilhouette is a bit closer to what
> I'm going for but still not quite there. When I experimented
> with vtkPolyDataSilhouette a while back I could not find any way to NOT
> draw a silhouette of interior features. In other words, just draw the
> exterior contour shape without any details inside that shape. In the VTK
> example with a simple sphere, this is not an issue, but if you have, say, a
> CAD model of some irregular shape then vtkPolyDataSilhouette will generate
> interior silhouette lines because "a silhouette is generated wherever the
> surface's normal is orthogonal to the view direction".
>
> Any ideas for solving this problem? Have I overlooked any existing
> solution in VTK? Or should I look into implementing a feature enhancement
> to the existing vtkPolyDataSilhouette filter?
>
> Regards,
> Taylor
>
> On Tue, Sep 30, 2014 at 10:04 PM, Sebastian Ordas <
> [email protected]> wrote:
>
>> Hi,
>> We could also render the silhouette (
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/PolyData/Silhouette) which
>> would use the current camera position in the 3D view
>> This would go in the line of Rostislav's 3D node picking approach (Bug
>> 1447 - picking of data tree nodes via vtk prop picker)
>> The selected objects could get their silhouette highlighted, like e.g. in
>> Blender.
>>
>> best regards,
>> sebastian
>>
>>
>> On 29/09/2014 03:58 p.m., Wegner wrote:
>>
>> Hi Rostislav,
>> I also wanted to enhance surface visualization by the edges so I can see
>> the opaque surface and the edges! I didn't yet have time for it. I would
>> absolutely vote for this feature / adaption!
>> ;) Ingmar
>>
>>
>>
>>
>> Rostislav Khlebnikov <[email protected]>
>> <[email protected]>schrieb:
>>>
>>> Hi guys,
>>>
>>> for me it was very useful to render the surface with edges. For that I
>>> basically followed this simple example:
>>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/ColorActorEdges,
>>> making changes to vtk surface mapper 3d (added two properties - edge
>>> visibility & edge color and set the vtkProperty accordingly in the
>>> mapper).
>>> But it didn't work at first. It turned out that the problem is the use
>>> of vtkOpenGLPolyDataMapper. But according to VTK docs,
>>> vtkOpenGLPolyDataMapper is deprecated and replaced by
>>> vtkPainterPolyDataMapper. When changing the vtkOpenGLPolyDataMapper to
>>> vtkPainterPolyDataMapper in surface mapper, the edges were rendered
>>> correctly. Is there any reason to hold on to the deprecated
>>> vtkOpenGLPolyDataMapper? If not - I can easily give you the changes.
>>>
>>> Rostislav.
>>>
>>>
>>>
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