[Paraview] Zooming through the ParaViewWeb API

[Deyton, Jordan H.]

I wasn't really sure what to use for the action.


(I will double check that I'm sending the full request with all parameters.) I'll try using "move" instead of "none". I'll also try programmatically sending a very small mouse movement with the left click, and report back if I can find anything out.


Thanks!

Jordan


________________________________
From: Sebastien Jourdain <sebastien.jourdain at kitware.com>
Sent: Wednesday, July 01, 2015 7:09 PM
To: Scott Wittenburg
Cc: Deyton, Jordan H.; paraview at paraview.org
Subject: Re: [Paraview] Zooming through the ParaViewWeb API

Scott is right, the x,y values are normalized, so depending on your screen size if your image is 1000 pixel wide and you want to reflect a move of 10 pixel, you should send a x of 10/1000=0.01.

On Wed, Jul 1, 2015 at 4:28 PM, Scott Wittenburg <scott.wittenburg at kitware.com<mailto:scott.wittenburg at kitware.com>> wrote:
Here is a sample from my websocket frames just now:

[48,4996973606207488,{},"viewport.mouse.interaction",[{"view":353,"action":"move","altKey":false,"ctrlKey":false,"shiftKey":false,"metaKey":false,"buttonLeft":false,"buttonMiddle":false,"buttonRight":true,"x":0.7654596100278551,"y":0.38173817381738173}]]

It seems the "action" should be set to "move" rather than "none", as in the documentation you linked, "none" does not seem to be an option.  Also, as that documentation states, x and y should be normalized to [0, 1], as you correctly guessed.  And finally, you may need to provide all the parameters with values like I show above, not just the ones you are interested in.

But at any rate, this should not then affect the center of rotation, but it sounds like in your case maybe it is?  Can you see if moving just a *tiny* bit keeps at least some of the object in view?

Cheers,
Scott


On Wed, Jul 1, 2015 at 4:12 PM, Jordan Deyton <deytonjh at ornl.gov<mailto:deytonjh at ornl.gov>> wrote:
ParaViewWeb gurus,

Is there a correct way to send a zoom request through the ParaViewWeb API?

I'm especially looking at the PVW MouseHandler (documentation here -- http://www.paraview.org/ParaView3/Doc/Nightly/www/js-doc/index.html#!/api/protocols.ParaViewWebMouseHandler)

I have had some success by sending a right-click with a small y value (looks like it needs to be between 0 and 1), the action set to "none", and buttonRight set to "true". However, when I afterward rotate the view (using the same RPC call with different methods), the rendered object just vanishes, although the axes and legend are still there.

Jordan

--
Jordan Deyton
Oak Ridge National Laboratory
Telephone: (865) 574-1091<tel:%28865%29%20574-1091>
Email: deytonjh at ornl.gov<mailto:deytonjh at ornl.gov>

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