[Paraview-developers] PointSprite plugin

[Utkarsh Ayachit]

Thanks for the update, John. Do you have an estimate for when you
expect these changes to go in?

Utkarsh


On Mon, Oct 21, 2013 at 11:31 AM, Biddiscombe, John A. <biddisco at cscs.ch> wrote:
> I’m sorry, I missed this thread.
>
>
>
> Don’t touch it yet.
>
>
>
> We have an intern here at CSCS (Nicholas), who is upgrading the transfer
> function editing in paraview to support the visit widgets as part of the
> core. We are using them to handle gradient opacity editing in volume
> rendering, but by moving the widgets into qt/components we are able to use
> them in paraview main rather than a plugin. Moving the point sprites into
> core will now be easy. We have made a new vtkAbstractPiecewise function
> class and an extra vtkGaussianPiecewise function which allows the user to
> switch between the (extremely poor) transfer function in paraview now and
> the new (much spiffier) gaussian one. This stuff is almost ready for a
> branch on gerrit, but there are some bugs in the parallel histogram display
> for the gradient we need to address. The gradient stuff is working for
> raycast (hoorah, even on mesa), and texture3D, but not on the GPU volume
> renderer (does it support gradient?).
>
> Once this is ready, we will move to the 2D transfer functions which are not
> present yet, but I had working some years ago for the texture mapper - and I
> need/want for the raytrace mapper.
>
>
>
> It is our plan to push this out as a core paraview addition and not as
> plugin stuff. We’ll do a video to demonstrate the features and a gerrit
> branch.
>
>
>
> I was under the impression that Marcus at kitware had done a whole load of
> new spritey stuff for chemistry viz, so there’s no need to drag out the old
> point sprite stuff maybe? anyway, integrating the point sprite wil be much
> easier soon, so wait a bit.
>
>
>
> JB
>
>
>
>
>
>
>
> From: paraview-developers-bounces at paraview.org
> [mailto:paraview-developers-bounces at paraview.org] On Behalf Of David E
> DeMarle
> Sent: 21 October 2013 17:15
> To: Utkarsh Ayachit
> Cc: ParaView Developers
> Subject: Re: [Paraview-developers] PointSprite plugin
>
>
>
> I'ld like to add:
>
> + Anybody object to promoting the core rendering functionality to VTK?
>
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
>
>
> On Mon, Oct 21, 2013 at 11:09 AM, Utkarsh Ayachit
> <utkarsh.ayachit at kitware.com> wrote:
>
> John (and other users/developers of the PointSprite plugin),
>
> I was trying to address up some of the issues with the point sprites
> and I see a potential for cleanup and hence I wanted to get your
> thoughts:
>
> + What are vtk1DTransferFunction and its subclasses needed? Can't we
> simply use vtkPiecewiseFunction?
>
> + Can we replace the VisIt transfer function editor UI used for
> editing the opacity and radius transfer functions to be similar to
> what the color map editor panel uses for opacity transfer function? If
> we do this, will there be any essential functionality that will be
> missed?
>
> Utkarsh
> _______________________________________________
> Paraview-developers mailing list
> Paraview-developers at paraview.org
> http://public.kitware.com/mailman/listinfo/paraview-developers
>
>