[OpenWalnut-Dev] removing max xonstraint and detecting lef click
David Moreno-Dominguez
moreno at cbs.mpg.de
Tue Nov 6 12:24:05 CET 2012
Hi there,
1. About the min-max issue: if I enable the sliders, the max slider maximum does change to the new value (although its position remains at the old maximum), so moving the slider to the top right I can indeed change the maximum to the new desired value. :-).
Is there any way to do this automatically from the code?. It is fine for me, but it is not very friendly user for a potential casual user.
2. Thanks for the help and tips, Ill see about implementing my own handler.
David Moreno-Dominguez
PhD Student
Research group "Cortical Networks and Cognitive Functions"
Max Planck Institute for Human Cognitive and Brain Sciences
Stephanstraße 1A, 04103 Leipzig, Germany
Phone: +49 341 9940-2625
Email: moreno at cbs.mpg.de
http://www.cbs.mpg.de/~moreno
----- Original Message -----
From: openwalnut-dev-request at lists.informatik.uni-leipzig.de
To: openwalnut-dev at lists.informatik.uni-leipzig.de
Sent: Tuesday, November 6, 2012 12:00:01 PM
Subject: OpenWalnut-Dev Digest, Vol 36, Issue 3
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Today's Topics:
1. Re: OpenWalnut-Dev Digest, Vol 36, Issue 2
(David Moreno-Dominguez)
2. Re: OpenWalnut-Dev Digest, Vol 36, Issue 2 (Sebastian Eichelbaum)
----------------------------------------------------------------------
Message: 1
Date: Mon, 5 Nov 2012 16:17:06 +0100 (CET)
From: David Moreno-Dominguez <moreno at cbs.mpg.de>
To: openwalnut-dev at lists.informatik.uni-leipzig.de
Subject: Re: [OpenWalnut-Dev] OpenWalnut-Dev Digest, Vol 36, Issue 2
Message-ID: <1067379369.5959.1352128626905.JavaMail.root at zimbra>
Content-Type: text/plain; charset=utf-8
Hi, I just pulled and updated walnut to the current version and recompiled and the max restriction issue still persists. ( although I also made sure I had it up to date at the time I originally reported the problem ).
It seems as "m_propSample->removeConstraint( PC_MAX );" does not remove the constraint set by "m_propSample->setMax( a );"
Regarding the "pick" event, I dont think id like to go through the hassle of correctly implementing my own handler, but then: is it possible of it to detect if a modifier key was pressed at the same time as the right click button? (say shift ot ctrl? )
I tried checking the value of "pickInfo.getModifierKey()" but it seems to be always set to "WPickInfo::NONE" no matter what key is pressed on the keyboard at the time of the click
Regards
David Moreno-Dominguez
PhD Student
Research group "Cortical Networks and Cognitive Functions"
Max Planck Institute for Human Cognitive and Brain Sciences
Stephanstra?e 1A, 04103 Leipzig, Germany
Phone: +49 341 9940-2625
Email: moreno at cbs.mpg.de
http://www.cbs.mpg.de/~moreno
----- Original Message -----
From: openwalnut-dev-request at lists.informatik.uni-leipzig.de
To: openwalnut-dev at lists.informatik.uni-leipzig.de
Sent: Monday, November 5, 2012 12:00:01 PM
Subject: OpenWalnut-Dev Digest, Vol 36, Issue 2
Send OpenWalnut-Dev mailing list submissions to
openwalnut-dev at lists.informatik.uni-leipzig.de
To subscribe or unsubscribe via the World Wide Web, visit
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You can reach the person managing the list at
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When replying, please edit your Subject line so it is more specific
than "Re: Contents of OpenWalnut-Dev digest..."
Today's Topics:
1. Re: removing max xonstraint and detecting left click
(Sebastian Eichelbaum)
----------------------------------------------------------------------
Message: 1
Date: Mon, 5 Nov 2012 10:32:15 +0100
From: Sebastian Eichelbaum <eichelbaum at informatik.uni-leipzig.de>
To: OpenWalnut Developers
<openwalnut-dev at lists.informatik.uni-leipzig.de>
Subject: Re: [OpenWalnut-Dev] removing max xonstraint and detecting
left click
Message-ID: <20121105093215.GA12519 at cardano.informatik.uni-leipzig.de>
Content-Type: text/plain; charset=iso-8859-1
Hi David
Sorry for the late reply.
The min/max issue:
------------------
Alexander Wiebel commited a patch wich fixes an issue with out min/max constraints. Please try the up-to-date version of OpenWalnut and report back if the issue still exists.
The Click-handling issue:
-------------------------
The signal you are using is the so called "pick" event. Picking is done with a right mouse click. If you really need to handle left-clicks and other events, you'll need to write
your own event handler for the view you are using. If you are using the main 3D view, you need to take care of several things in your event handler:
* only handle clicks
* do not accept other events like dragging, moving and similar or the 3d scene interaction will not work anymore.
How to implement your own event handler:
1. use WKernel::getRunningKernel()->getGraphicsEngine()->getViewer()->getView() to get the osgViewer::View instance
2. use this view instance's "addEventHandler". (http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01050.html#99c233a07c8870101074c2750725d5b7)
3. implement an osgGA::GUIEventHandler http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00294.html
I hope this helps somewhat. But once again, the GUIEventHandler::handle function returns true ONLY if you handle the click. Everything else should be returned as "false" in your handler.
Bye
Sebastian
On Thu, 01 Nov 2012, David Moreno-Dominguez wrote:
> Hello, I am working on a walnut module and I have a couple of questions you might be able to solve.
>
> Firstly it is about the setting and resetting maximum/minimum constraints for int properties
> Basically I find myself unable to override a previously max already set before.
> I have tried using
>
> m_propSample->setMax( a );
> m_propSample->removeConstraint( PC_MAX );
> m_propSample->setMax( b );
>
> but it still keeps the a limit, unless b is even more restrictive.
> Is there anyway around this?
> I would like to be able to change dynamically the maximum value allowed for my property.
>
>
> My second question refers to capturing the signal of a mouse click.
> I am using the following piece of code written by a colleague
>
> boost::signals2::connection con = WKernel::getRunningKernel()->getGraphicsEngine()->getViewer()->getPickHandler()->getPickSignal()->
> connect( boost::bind( &WMHierchClustDisplay::dendrogramClick, this, _1 ) );
>
>
> However, it seems this only calls to the "dendrogramClick" function when a right mouse button is pressed, and I do not know the reason why.
> Any way to also capture the left click?
>
> Thanks in advance for your help
>
> David Moreno-Dominguez
> PhD Student
> Research group "Cortical Networks and Cognitive Functions"
> Max Planck Institute for Human Cognitive and Brain Sciences
> Stephanstra?e 1A, 04103 Leipzig, Germany
> Phone: +49 341 9940-2625
> Email: moreno at cbs.mpg.de
> http://www.cbs.mpg.de/~moreno
> _______________________________________________
> OpenWalnut-Dev mailing list
> OpenWalnut-Dev at lists.informatik.uni-leipzig.de
> http://lists.informatik.uni-leipzig.de/mailman/listinfo/openwalnut-dev
>
> Archive: http://lists.informatik.uni-leipzig.de/pipermail/openwalnut-dev/
>
--
Dipl.-Inf. Sebastian Eichelbaum
Universit?t Leipzig
Institut f?r Informatik
Abteilung Bild- und Signalverarbeitung
PF 100920
D-04009 Leipzig
------------------------------
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OpenWalnut-Dev at lists.informatik.uni-leipzig.de
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End of OpenWalnut-Dev Digest, Vol 36, Issue 2
*********************************************
------------------------------
Message: 2
Date: Mon, 5 Nov 2012 17:19:37 +0100
From: Sebastian Eichelbaum <eichelbaum at informatik.uni-leipzig.de>
To: OpenWalnut Developers
<openwalnut-dev at lists.informatik.uni-leipzig.de>
Subject: Re: [OpenWalnut-Dev] OpenWalnut-Dev Digest, Vol 36, Issue 2
Message-ID: <20121105161937.GC12519 at cardano.informatik.uni-leipzig.de>
Content-Type: text/plain; charset=iso-8859-1
Hi
1. issue:
Ok. One last test :-) ... please enable "Slider Min/Max editing" in the Settings-menu. If you modify the max constraint of your property, what happens with the max slider?
2. issue:
Believe me it is a larger hassle to get the Pick handler convinced of handling modifiers and similar. Writing an own EventHandler is nearly trivial. Just derive from the osgGA::GUIEventHandler and implement a handle function which checks for click events. everything else can be ignored. Have a look in our code. We use these handlers in several modules, like clusterDisplay.
Bye
Sebastian
On Mon, 05 Nov 2012, David Moreno-Dominguez wrote:
> Hi, I just pulled and updated walnut to the current version and recompiled and the max restriction issue still persists. ( although I also made sure I had it up to date at the time I originally reported the problem ).
> It seems as "m_propSample->removeConstraint( PC_MAX );" does not remove the constraint set by "m_propSample->setMax( a );"
>
> Regarding the "pick" event, I dont think id like to go through the hassle of correctly implementing my own handler, but then: is it possible of it to detect if a modifier key was pressed at the same time as the right click button? (say shift ot ctrl? )
>
> I tried checking the value of "pickInfo.getModifierKey()" but it seems to be always set to "WPickInfo::NONE" no matter what key is pressed on the keyboard at the time of the click
>
> Regards
>
>
> David Moreno-Dominguez
> PhD Student
> Research group "Cortical Networks and Cognitive Functions"
> Max Planck Institute for Human Cognitive and Brain Sciences
> Stephanstra?e 1A, 04103 Leipzig, Germany
> Phone: +49 341 9940-2625
> Email: moreno at cbs.mpg.de
> http://www.cbs.mpg.de/~moreno
>
> ----- Original Message -----
> From: openwalnut-dev-request at lists.informatik.uni-leipzig.de
> To: openwalnut-dev at lists.informatik.uni-leipzig.de
> Sent: Monday, November 5, 2012 12:00:01 PM
> Subject: OpenWalnut-Dev Digest, Vol 36, Issue 2
>
> Send OpenWalnut-Dev mailing list submissions to
> openwalnut-dev at lists.informatik.uni-leipzig.de
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://lists.informatik.uni-leipzig.de/mailman/listinfo/openwalnut-dev
>
> or, via email, send a message with subject or body 'help' to
> openwalnut-dev-request at lists.informatik.uni-leipzig.de
>
> You can reach the person managing the list at
> openwalnut-dev-owner at lists.informatik.uni-leipzig.de
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of OpenWalnut-Dev digest..."
>
>
> Today's Topics:
>
> 1. Re: removing max xonstraint and detecting left click
> (Sebastian Eichelbaum)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 5 Nov 2012 10:32:15 +0100
> From: Sebastian Eichelbaum <eichelbaum at informatik.uni-leipzig.de>
> To: OpenWalnut Developers
> <openwalnut-dev at lists.informatik.uni-leipzig.de>
> Subject: Re: [OpenWalnut-Dev] removing max xonstraint and detecting
> left click
> Message-ID: <20121105093215.GA12519 at cardano.informatik.uni-leipzig.de>
> Content-Type: text/plain; charset=iso-8859-1
>
> Hi David
>
> Sorry for the late reply.
>
> The min/max issue:
> ------------------
>
> Alexander Wiebel commited a patch wich fixes an issue with out min/max constraints. Please try the up-to-date version of OpenWalnut and report back if the issue still exists.
>
> The Click-handling issue:
> -------------------------
>
> The signal you are using is the so called "pick" event. Picking is done with a right mouse click. If you really need to handle left-clicks and other events, you'll need to write
> your own event handler for the view you are using. If you are using the main 3D view, you need to take care of several things in your event handler:
>
> * only handle clicks
> * do not accept other events like dragging, moving and similar or the 3d scene interaction will not work anymore.
>
> How to implement your own event handler:
>
> 1. use WKernel::getRunningKernel()->getGraphicsEngine()->getViewer()->getView() to get the osgViewer::View instance
> 2. use this view instance's "addEventHandler". (http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01050.html#99c233a07c8870101074c2750725d5b7)
> 3. implement an osgGA::GUIEventHandler http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a00294.html
>
>
> I hope this helps somewhat. But once again, the GUIEventHandler::handle function returns true ONLY if you handle the click. Everything else should be returned as "false" in your handler.
>
> Bye
> Sebastian
>
>
>
> On Thu, 01 Nov 2012, David Moreno-Dominguez wrote:
>
> > Hello, I am working on a walnut module and I have a couple of questions you might be able to solve.
> >
> > Firstly it is about the setting and resetting maximum/minimum constraints for int properties
> > Basically I find myself unable to override a previously max already set before.
> > I have tried using
> >
> > m_propSample->setMax( a );
> > m_propSample->removeConstraint( PC_MAX );
> > m_propSample->setMax( b );
> >
> > but it still keeps the a limit, unless b is even more restrictive.
> > Is there anyway around this?
> > I would like to be able to change dynamically the maximum value allowed for my property.
> >
> >
> > My second question refers to capturing the signal of a mouse click.
> > I am using the following piece of code written by a colleague
> >
> > boost::signals2::connection con = WKernel::getRunningKernel()->getGraphicsEngine()->getViewer()->getPickHandler()->getPickSignal()->
> > connect( boost::bind( &WMHierchClustDisplay::dendrogramClick, this, _1 ) );
> >
> >
> > However, it seems this only calls to the "dendrogramClick" function when a right mouse button is pressed, and I do not know the reason why.
> > Any way to also capture the left click?
> >
> > Thanks in advance for your help
> >
> > David Moreno-Dominguez
> > PhD Student
> > Research group "Cortical Networks and Cognitive Functions"
> > Max Planck Institute for Human Cognitive and Brain Sciences
> > Stephanstra?e 1A, 04103 Leipzig, Germany
> > Phone: +49 341 9940-2625
> > Email: moreno at cbs.mpg.de
> > http://www.cbs.mpg.de/~moreno
> > _______________________________________________
> > OpenWalnut-Dev mailing list
> > OpenWalnut-Dev at lists.informatik.uni-leipzig.de
> > http://lists.informatik.uni-leipzig.de/mailman/listinfo/openwalnut-dev
> >
> > Archive: http://lists.informatik.uni-leipzig.de/pipermail/openwalnut-dev/
> >
>
> --
> Dipl.-Inf. Sebastian Eichelbaum
> Universit?t Leipzig
> Institut f?r Informatik
> Abteilung Bild- und Signalverarbeitung
> PF 100920
> D-04009 Leipzig
>
>
> ------------------------------
>
> _______________________________________________
> OpenWalnut-Dev mailing list
> OpenWalnut-Dev at lists.informatik.uni-leipzig.de
> http://lists.informatik.uni-leipzig.de/mailman/listinfo/openwalnut-dev
>
>
> End of OpenWalnut-Dev Digest, Vol 36, Issue 2
> *********************************************
> _______________________________________________
> OpenWalnut-Dev mailing list
> OpenWalnut-Dev at lists.informatik.uni-leipzig.de
> http://lists.informatik.uni-leipzig.de/mailman/listinfo/openwalnut-dev
>
> Archive: http://lists.informatik.uni-leipzig.de/pipermail/openwalnut-dev/
>
--
Dipl.-Inf. Sebastian Eichelbaum
Universit?t Leipzig
Institut f?r Informatik
Abteilung Bild- und Signalverarbeitung
PF 100920
D-04009 Leipzig
------------------------------
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OpenWalnut-Dev mailing list
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