[Paraview] OSPRay, scaled spheres

[Heiland, Randy]

You lost me - in the Glyph Source block,I select Glyph Type = 2D Glyph.  Then where is VERTEX? In the Display block, I choose Representation = Points which produces a blobby mess. But a very *smooth* blobby mess :)

> On Oct 25, 2017, at 4:46 PM, David E DeMarle <dave.demarle at kitware.com> wrote:
> 
> That control is only available if the representation type is surface, this could explain why you don't see it on the ProgrammableSource.
> 
> In the glyph filter, use 2D glyph, VERTEX.
> 
> 
> 
> 
> 
> David E DeMarle
> Kitware, Inc.
> Principal Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
> 
> On Wed, Oct 25, 2017 at 4:29 PM, Heiland, Randy <heiland at iu.edu <mailto:heiland at iu.edu>> wrote:
> I only see the “OSPRay Use Scale Array” on the Properties for Glyph, not the Props for the ProgrammableSource. Expected? And so, OSPRay is rendering the chunky polygonalized spherical glyphs (Representation = Surface).
> 
> If I could independently scale the implicit spheres and use OSPRay, I’d prefer that until I do the vtkCutter. (thanks for confirming, Note 2)
> 
> 
> 
>> On Oct 25, 2017, at 3:35 PM, David E DeMarle <dave.demarle at kitware.com <mailto:dave.demarle at kitware.com>> wrote:
>> 
>> To change the size based on values:
>> check "OSPRay Use Scale Array" on "Display" section or "Properties" Tab
>> Choose the array name you want to scale by with "OSPRay Scale Array" pulldown.
>> Define your value to radius transfer function via the "OSPRay Scale Function" popup editor.
>> 
>> Note 1: the transfer function is defined to map between 0.0 and 1.0 and clamp outside of that range. Use a calculator to scale and bias into that range. If you don't like having to do this, file a feature request to remind the developers to implement it one of these days such that min is defined to be array min and max.
>> 
>> Note 2:Cutter will not cut through the implicit spheres.
>> 
>> Note 3: Point Gaussian representation's Use Scalar Array, Guassian Scale Array and Scale Transfer Function (which I riffed off of) are similar. I'm not sure about scale and bias and cut with this GL shader based side.
>> 
>> 
>> David E DeMarle
>> Kitware, Inc.
>> Principal Engineer
>> 21 Corporate Drive <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g>
>> Clifton Park, NY 12065 <https://maps.google.com/?q=21+Corporate+Drive+Clifton+Park,+NY+12065&entry=gmail&source=g>-8662
>> Phone: 518-881-4909 <tel:(518)%20881-4909>
>> On Wed, Oct 25, 2017 at 3:16 PM, Heiland, Randy <heiland at iu.edu <mailto:heiland at iu.edu>> wrote:
>> Just want to make sure I’m not missing something. In my Pgmable Source PolyData, I render Points and love the OSPRay-rendered spheres. However, is there any mechanism for (independently) scaling these, i.e., other than the fixed Point Size? Or is the only way to get scalar-value scaled spheres via the Glyph filter? If so, is it possible to control the resolution/triangulation of that glyph? Basically, I’m looking for ways of getting high-res spheres, but will also want to use vtkCutter on them later.
>> 
>> thanks, Randy
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