[Paraview] OSPRay, scaled spheres

[David E DeMarle]

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type.



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 5:11 PM, Heiland, Randy <heiland at iu.edu> wrote:

> 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
> <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 <(518)%20881-4909>
>
> On Wed, Oct 25, 2017 at 4:29 PM, Heiland, Randy <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>
>> 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 <(518)%20881-4909>
>>
>> On Wed, Oct 25, 2017 at 3:16 PM, Heiland, Randy <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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>>
>>
>
>
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