<div dir="ltr">Hi All,<div> Could you please tell me, what is the difference between deepcopy() and shallowcopy() functions in vtk.</div><div><br></div><div><br></div><div>David</div><div><br></div><div><br></div><div>
<br></div><div><br></div><div><br><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Sep 5, 2013 at 3:08 AM, <span dir="ltr"><<a href="mailto:vtkusers-request@vtk.org" target="_blank">vtkusers-request@vtk.org</a>></span> wrote:<br>
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Today's Topics:<br>
<br>
1. Re: Strange slowness with vtkImagePlaneWidget (Dean Inglis)<br>
2. VTK + Quick 2 (Jude Pereira)<br>
3. Re: VTK + Quick 2 (Shawn Waldon)<br>
4. Re: VTK + Quick 1 (Shawn Waldon)<br>
5. Re: VTK + Quick 1 (Jude Pereira)<br>
6. Re: Disable warning about "does not support stereo"<br>
(Alex Malyushytskyy)<br>
7. Re: Any ideas for showing selected items? (Alex Malyushytskyy)<br>
8. Re: Triangulation (Alex Malyushytskyy)<br>
9. Re: Is this a bug? (Max)<br>
10. Re: Zooming actor (Max)<br>
11. Re: Disable warning about "does not support stereo" (Max)<br>
12. Re: Extract polylines from the surface (Cory Quammen)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 4 Sep 2013 13:10:32 -0400<br>
From: Dean Inglis <<a href="mailto:inglis.dl@gmail.com">inglis.dl@gmail.com</a>><br>
Subject: Re: [vtkusers] Strange slowness with vtkImagePlaneWidget<br>
To: Marco Sambin <<a href="mailto:m.sambin@gmail.com">m.sambin@gmail.com</a>><br>
Cc: "<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<<a href="mailto:CABX%2Bvok%2B5zV0vQabDRO4zfj6KS92x8GA-h8BxQL-oQsHsweVbA@mail.gmail.com">CABX+vok+5zV0vQabDRO4zfj6KS92x8GA-h8BxQL-oQsHsweVbA@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hi Marco,<br>
<br>
can you test and see what happens with only 1 image plane widget? Texture<br>
mapping used in the widget works on a power of two sampling and<br>
maybe for certain slice orientations, your hardware / driver is having<br>
issue with that. Test with only 1 widget and do the<br>
test 3 x with the plane orientation orthogonally different with each test.<br>
Try one widget with the plane orientation non-orthognally aligned.<br>
Also, when reporting issues with VTK, you should specify your build<br>
environment (eg., VTK version, compiler, static/shared, debug/release,<br>
basic hardware and OS<br>
parameters such as RAM, GPU, CPU etc.).<br>
<br>
<br>
- Dean<br>
<br>
<br>
On Wed, Sep 4, 2013 at 12:48 PM, Marco Sambin <<a href="mailto:m.sambin@gmail.com">m.sambin@gmail.com</a>> wrote:<br>
<br>
> Hi,<br>
><br>
> let me add something to my previous post, since I discovered some facts<br>
> which may be useful in identifying the issue.<br>
><br>
> I made the following test:<br>
><br>
> 1) I have a set of 357 raw files in an input folder. Each file contains a<br>
> 512x512 unsigned short pixel matrix.<br>
><br>
> 2) Using this single set of raw files (i.e., always keeping the same input<br>
> test volume), after several attempts I discovered that if I limit my reader<br>
> to read just 326 slices or less, then rendering of the vtkImagePlaneWidget<br>
> will be slow. On the other side, if I allow my reader to read 327 slices or<br>
> more, then rendering of vtkImagePlaneWidget will be fast. In code (with<br>
> reference to the code posted in my previous message):<br>
><br>
> [...]<br>
> imageReaderVTK.SetDataExtent(0, sliceCols - 1,<br>
> 0, sliceRows - 1,<br>
> 0, 325);<br>
> [...]<br>
> ---> rendering will be SLOW<br>
><br>
><br>
> [...]<br>
> imageReaderVTK.SetDataExtent(0, sliceCols - 1,<br>
> 0, sliceRows - 1,<br>
> 0, 326);<br>
> [...]<br>
> ---> rendering will be FAST<br>
><br>
> Once again, the set of RAW input slices available in the input folder is<br>
> always the same.<br>
><br>
> Any explanation for this?<br>
><br>
> The only explanation which comes to my mind is the existence in VTK of a<br>
> rendering technique adopting a policy like "if data is small enough to be<br>
> managed by the graphic card, then demand this task to the graphic card,<br>
> otherwise use the CPU", and on that old PC the CPU may be a lot faster than<br>
> the graphic card to do that job.<br>
><br>
> Is this just fantasy? Or there may be an explanation of that kind to the<br>
> behavior I observed on that old PC?<br>
><br>
> Thanks in advance for your comments.<br>
><br>
> Marco<br>
><br>
><br>
> On Wed, Sep 4, 2013 at 5:29 PM, Marco Sambin <<a href="mailto:m.sambin@gmail.com">m.sambin@gmail.com</a>> wrote:<br>
><br>
>> Hi Dean,<br>
>><br>
>> first of all, thank you for your message.<br>
>><br>
>> The underlying pixel data type is unsigned short for both volumes.<br>
>> Here is how I configure the reader:<br>
>><br>
>> imageReaderVTK = new vtkImageReader2();<br>
>> imageReaderVTK.FileLowerLeftOn();<br>
>> imageReaderVTK.SetFilePrefix(filePrefix);<br>
>> imageReaderVTK.SetFilePattern("%s_%d.raw");<br>
>> imageReaderVTK.SetDataExtent(0, sliceCols - 1,<br>
>> 0, sliceRows - 1,<br>
>> 0, numOfImages - 1);<br>
>> imageReaderVTK.SetDataSpacing(xSpacing, ySpacing, zSpacing);<br>
>> imageReaderVTK.SetDataOrigin(0.0, 0.0, 0.0);<br>
>> imageReaderVTK.SetDataScalarTypeToUnsignedShort();<br>
>> imageReaderVTK.SetDataByteOrderToBigEndian();<br>
>> imageReaderVTK.UpdateWholeExtent();<br>
>><br>
>><br>
>> And here is how I configure the widget:<br>
>><br>
>> vtkGenericRenderWindowInteractor interactor =<br>
>> getRenderWindowInteractor();<br>
>> planeWidgets[planeWidgetIndex].RestrictPlaneToVolumeOn();<br>
>> planeWidgets[planeWidgetIndex].SetInteractor(interactor);<br>
>> planeWidgets[planeWidgetIndex].DisplayTextOn();<br>
>> planeWidgets[planeWidgetIndex].TextureInterpolateOn();<br>
>> planeWidgets[planeWidgetIndex].UserControlledLookupTableOff();<br>
>> planeWidgets[planeWidgetIndex].SetResliceInterpolateToCubic();<br>
>> planeWidgets[planeWidgetIndex].KeyPressActivationOff();<br>
>><br>
>> planeWidgets[planeWidgetIndex].SetInputConnection(imageReaderVTK.GetOutputPort());<br>
>> planeWidgets[planeWidgetIndex].SetWindowLevel(winWidth, winLevel, 0);<br>
>> planeWidgets[planeWidgetIndex].SetPlaneOrientation(planeWidgetIndex);<br>
>><br>
>> planeWidgets[planeWidgetIndex].PlaceWidget(volBounds);<br>
>> planeWidgets[planeWidgetIndex].On();<br>
>> planeWidgets[planeWidgetIndex].SetEnabled(1);<br>
>><br>
>> As I explained in my previous post, strangely the widgets interact with<br>
>> much better performances when my volume is made up of 360 512x512 slices,<br>
>> and worse when my volume is made up of 90 512x512 slices.<br>
>> But this only happens on the old PC. On my development machine the<br>
>> rendering performance of the widgets are fine and undistinguishable in both<br>
>> cases.<br>
>><br>
>> I would like to underline that, on the old machine and with the smaller<br>
>> volume, the rendering of the vtkImagePlaneWidget is slow even when I try to<br>
>> modify the camera position through the default VTK interactor. I do not<br>
>> trigger any recomputation of window/level, or other, just roll my camera<br>
>> around the volume, and still I see the rendering slowness (I can<br>
>> distinguish painting of each triangle of each texture).<br>
>><br>
>> Thanks in advance for sharing your comments and suggestions with me.<br>
>><br>
>> Marco<br>
>><br>
>><br>
>><br>
>> On Wed, Sep 4, 2013 at 4:21 PM, Dean Inglis <<a href="mailto:inglis.dl@gmail.com">inglis.dl@gmail.com</a>> wrote:<br>
>><br>
>>> Hi Marco,<br>
>>><br>
>>> what is the underlying pixel data type in those two images ? The widget<br>
>>> has an internal<br>
>>> vtkImageMapToColors which will do additional processing to convert the<br>
>>> input to<br>
>>> uchar if required. How do you configure your widgets ?<br>
>>><br>
>>><br>
>>> - Dean<br>
>>><br>
>>><br>
>>> On Wed, Sep 4, 2013 at 7:08 AM, Marco Sambin <<a href="mailto:m.sambin@gmail.com">m.sambin@gmail.com</a>> wrote:<br>
>>><br>
>>>> Hi all.<br>
>>>><br>
>>>> In my VTK6-based Java application, I am using a vtkCanvas where I<br>
>>>> display three orthogonal vtkImagePlaneWidgets, cutting a volume loaded<br>
>>>> through vtkImageReader2.<br>
>>>><br>
>>>> Everything works fine on my development machine, which is a recent and<br>
>>>> moderately-powerful 64-bit Win 7-based machine.<br>
>>>><br>
>>>> For legacy-compatibility purposes, I tested this application under an<br>
>>>> older Win XP-based Pentium 4 machine with 1 GB RAM and old Barco graphic<br>
>>>> cards, and I obtained "strange" results:<br>
>>>><br>
>>>> - if I feed vtkImageReader2 with a volume made up of around 360 raw<br>
>>>> slices, each one 512x512 pixels, then the overall rendering performances of<br>
>>>> the view containing the three vtkImagePlaneWidgets are acceptable.<br>
>>>><br>
>>>> - on the other side, if I feed vtkImageReader2 with a volume made up of<br>
>>>> 90 (i.e., fewer) raw slices, each one 512x512 pixels, then the overall<br>
>>>> rendering performances of the view containing the three<br>
>>>> vtkImagePlaneWidgets become really poor, and I can distinguish the texture<br>
>>>> appearing on top of each plane widget painting as two separate triangles,<br>
>>>> given the slow rendering.<br>
>>>><br>
>>>> Can you guess why the rendering performance of the vtkImagePlaneWidgets<br>
>>>> are much worse with the smaller volume w.r.t. with the larger volume?<br>
>>>><br>
>>>> Thanks for any hints you will give.<br>
>>>><br>
>>>> Best regards,<br>
>>>><br>
>>>> Marco<br>
>>>><br>
>>>><br>
>>>> _______________________________________________<br>
>>>> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
>>>><br>
>>>> Visit other Kitware open-source projects at<br>
>>>> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
>>>><br>
>>>> Please keep messages on-topic and check the VTK FAQ at:<br>
>>>> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
>>>><br>
>>>> Follow this link to subscribe/unsubscribe:<br>
>>>> <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
>>>><br>
>>>><br>
>>><br>
>><br>
><br>
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<br>
Message: 2<br>
Date: Wed, 4 Sep 2013 19:09:56 +0000<br>
From: Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>><br>
Subject: [vtkusers] VTK + Quick 2<br>
To: "<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<<a href="mailto:353902dcc5c8498e901af058d76493de@BY2PR05MB142.namprd05.prod.outlook.com">353902dcc5c8498e901af058d76493de@BY2PR05MB142.namprd05.prod.outlook.com</a>><br>
<br>
Content-Type: text/plain; charset="us-ascii"<br>
<br>
Hey guys,<br>
Does anyone have any experience using QVTKWidget with a QML interface?<br>
We would love to just use QML for the UI all the way through but since VTK does not seem to officially support QML, I've been looking into options like QGraphicsProxyWidget and embedding a subclass of it containing the QVTKWidget into the QML scene.<br>
I haven't had much success since I keep running into exceptions inside QVTKWidget and would rather not try to debug VTK code if someone has some insight into the issue.<br>
<br>
Any examples on the topic would help immensely.<br>
<br>
Thanks<br>
Jude<br>
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<br>
Message: 3<br>
Date: Wed, 4 Sep 2013 15:13:15 -0400<br>
From: Shawn Waldon <<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>><br>
Subject: Re: [vtkusers] VTK + Quick 2<br>
To: Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>><br>
Cc: "<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<CAKqg6a5ZgtWjkRVavgJVfci=<a href="mailto:ys_dqi7mr1qeZzusbov7x43SBw@mail.gmail.com">ys_dqi7mr1qeZzusbov7x43SBw@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="windows-1252"<br>
<br>
Have you seen this example?<br>
<a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance</a><br>
<br>
HTH,<br>
Shawn<br>
<br>
<br>
On Wed, Sep 4, 2013 at 3:09 PM, Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>> wrote:<br>
<br>
> Hey guys,****<br>
><br>
> Does anyone have any experience using QVTKWidget with a QML interface?****<br>
><br>
> We would love to just use QML for the UI all the way through but since VTK<br>
> does not seem to officially support QML, I?ve been looking into options<br>
> like QGraphicsProxyWidget and embedding a subclass of it containing the<br>
> QVTKWidget into the QML scene. ****<br>
><br>
> I haven?t had much success since I keep running into exceptions inside<br>
> QVTKWidget and would rather not try to debug VTK code if someone has some<br>
> insight into the issue. ****<br>
><br>
> ** **<br>
><br>
> Any examples on the topic would help immensely.****<br>
><br>
> ** **<br>
><br>
> Thanks****<br>
><br>
> Jude****<br>
><br>
> _______________________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Please keep messages on-topic and check the VTK FAQ at:<br>
> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
> <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
><br>
><br>
<br>
<br>
--<br>
Shawn Waldon<br>
Graduate Research Assistant<br>
Department of Computer Science<br>
University of North Carolina at Chapel Hill<br>
<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a><br>
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<br>
Message: 4<br>
Date: Wed, 4 Sep 2013 15:30:37 -0400<br>
From: Shawn Waldon <<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>><br>
Subject: Re: [vtkusers] VTK + Quick 1<br>
To: Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>>, VTK <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<CAKqg6a5oxWHWUh2ZHsKQuTd5ay_Keq=<a href="mailto:71mNPdTkHW5e27ygWTg@mail.gmail.com">71mNPdTkHW5e27ygWTg@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="windows-1252"<br>
<br>
I haven't used QML, only pure Qt with VTK. I wasn't aware that the<br>
difference between the two was that big... Does anyone else have any<br>
suggestions for this?<br>
<br>
Shawn<br>
<br>
PS: Copy the mailing list on replies so that others know the suggestion<br>
didn't help.<br>
<br>
<br>
On Wed, Sep 4, 2013 at 3:24 PM, Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>> wrote:<br>
<br>
> I hadn?t seen that exact one but I?ve seen something similar. ****<br>
><br>
> The issue isn?t simply using VTK inside a Qt app. ****<br>
><br>
> It?s using VTK inside an application with a declarative interface (i.e.<br>
> QML). QML is very designer oriented and a lot of controls that exist in Qt<br>
> Widgets don?t exist in QML (like QVTKWidget. There is no QML equivalent)**<br>
> **<br>
><br>
> The solution to this is to use a QGraphicsProxyWidget<<a href="http://doc.qt.digia.com/4.7/declarative-cppextensions-qwidgets.html" target="_blank">http://doc.qt.digia.com/4.7/declarative-cppextensions-qwidgets.html</a>>which (I think) lets you place widgets inside QML applications (at least<br>
> QML apps designed with Quick 1).****<br>
><br>
> ** **<br>
><br>
> I?ve tried to subclass QGraphicsProxyWidget with no luck so far. A pure Qt<br>
> widget application on the other hand (like the one you linked me to) does<br>
> work.****<br>
><br>
> ** **<br>
><br>
> Jude****<br>
><br>
> ** **<br>
><br>
> *From:* Shawn Waldon [mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>]<br>
> *Sent:* Wednesday, September 04, 2013 3:13 PM<br>
> *To:* Jude Pereira<br>
> *Cc:* <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
> *Subject:* Re: [vtkusers] VTK + Quick 2****<br>
><br>
> ** **<br>
><br>
> Have you seen this example?****<br>
><br>
> <a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance</a><br>
> ****<br>
><br>
> ** **<br>
><br>
> HTH,****<br>
><br>
> Shawn****<br>
><br>
> ** **<br>
><br>
> On Wed, Sep 4, 2013 at 3:09 PM, Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>><br>
> wrote:****<br>
><br>
> Hey guys,****<br>
><br>
> Does anyone have any experience using QVTKWidget with a QML interface?****<br>
><br>
> We would love to just use QML for the UI all the way through but since VTK<br>
> does not seem to officially support QML, I?ve been looking into options<br>
> like QGraphicsProxyWidget and embedding a subclass of it containing the<br>
> QVTKWidget into the QML scene. ****<br>
><br>
> I haven?t had much success since I keep running into exceptions inside<br>
> QVTKWidget and would rather not try to debug VTK code if someone has some<br>
> insight into the issue. ****<br>
><br>
> ****<br>
><br>
> Any examples on the topic would help immensely.****<br>
><br>
> ****<br>
><br>
> Thanks****<br>
><br>
> Jude****<br>
><br>
><br>
> _______________________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Please keep messages on-topic and check the VTK FAQ at:<br>
> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
> <a href="http://www.vtk.org/mailman/listinfo/vtkusers****" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers****</a><br>
><br>
><br>
><br>
> ****<br>
><br>
> ** **<br>
><br>
> -- ****<br>
><br>
> Shawn Waldon****<br>
><br>
> Graduate Research Assistant****<br>
><br>
> Department of Computer Science****<br>
><br>
> University of North Carolina at Chapel Hill****<br>
><br>
> <a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>****<br>
><br>
<br>
<br>
<br>
--<br>
Shawn Waldon<br>
Graduate Research Assistant<br>
Department of Computer Science<br>
University of North Carolina at Chapel Hill<br>
<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a><br>
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Message: 5<br>
Date: Wed, 4 Sep 2013 19:34:25 +0000<br>
From: Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>><br>
Subject: Re: [vtkusers] VTK + Quick 1<br>
To: Shawn Waldon <<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>>, VTK <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<<a href="mailto:3dcab9a1a71441248aa92a0aa64cff53@BY2PR05MB142.namprd05.prod.outlook.com">3dcab9a1a71441248aa92a0aa64cff53@BY2PR05MB142.namprd05.prod.outlook.com</a>><br>
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<br>
My bad. Didn't realize that (although it is obvious).<br>
<br>
Yeah, the difference between Qt widgets and Quick 1 is big but not irreconcilable. Quick 2 on the other hand is completely different and any Qt widgets you had are useless in Quick 2.<br>
<br>
Jude<br>
<br>
From: Shawn Waldon [mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>]<br>
Sent: Wednesday, September 04, 2013 3:31 PM<br>
To: Jude Pereira; VTK<br>
Subject: Re: [vtkusers] VTK + Quick 1<br>
<br>
I haven't used QML, only pure Qt with VTK. I wasn't aware that the difference between the two was that big... Does anyone else have any suggestions for this?<br>
<br>
Shawn<br>
<br>
PS: Copy the mailing list on replies so that others know the suggestion didn't help.<br>
<br>
On Wed, Sep 4, 2013 at 3:24 PM, Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a><mailto:<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>>> wrote:<br>
I hadn't seen that exact one but I've seen something similar.<br>
The issue isn't simply using VTK inside a Qt app.<br>
It's using VTK inside an application with a declarative interface (i.e. QML). QML is very designer oriented and a lot of controls that exist in Qt Widgets don't exist in QML (like QVTKWidget. There is no QML equivalent)<br>
The solution to this is to use a QGraphicsProxyWidget<<a href="http://doc.qt.digia.com/4.7/declarative-cppextensions-qwidgets.html" target="_blank">http://doc.qt.digia.com/4.7/declarative-cppextensions-qwidgets.html</a>> which (I think) lets you place widgets inside QML applications (at least QML apps designed with Quick 1).<br>
<br>
I've tried to subclass QGraphicsProxyWidget with no luck so far. A pure Qt widget application on the other hand (like the one you linked me to) does work.<br>
<br>
Jude<br>
<br>
From: Shawn Waldon [mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a><mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>>]<br>
Sent: Wednesday, September 04, 2013 3:13 PM<br>
To: Jude Pereira<br>
Cc: <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><mailto:<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Subject: Re: [vtkusers] VTK + Quick 2<br>
<br>
Have you seen this example?<br>
<a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Qt/RenderWindowUISingleInheritance</a><br>
<br>
HTH,<br>
Shawn<br>
<br>
On Wed, Sep 4, 2013 at 3:09 PM, Jude Pereira <<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a><mailto:<a href="mailto:jpereira@advsolinc.com">jpereira@advsolinc.com</a>>> wrote:<br>
Hey guys,<br>
Does anyone have any experience using QVTKWidget with a QML interface?<br>
We would love to just use QML for the UI all the way through but since VTK does not seem to officially support QML, I've been looking into options like QGraphicsProxyWidget and embedding a subclass of it containing the QVTKWidget into the QML scene.<br>
I haven't had much success since I keep running into exceptions inside QVTKWidget and would rather not try to debug VTK code if someone has some insight into the issue.<br>
<br>
Any examples on the topic would help immensely.<br>
<br>
Thanks<br>
Jude<br>
<br>
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Shawn Waldon<br>
Graduate Research Assistant<br>
Department of Computer Science<br>
University of North Carolina at Chapel Hill<br>
<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a><mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>><br>
<br>
<br>
<br>
--<br>
Shawn Waldon<br>
Graduate Research Assistant<br>
Department of Computer Science<br>
University of North Carolina at Chapel Hill<br>
<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a><mailto:<a href="mailto:swaldon@cs.unc.edu">swaldon@cs.unc.edu</a>><br>
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Message: 6<br>
Date: Wed, 4 Sep 2013 13:38:37 -0700<br>
From: Alex Malyushytskyy <<a href="mailto:alexmalvtk@gmail.com">alexmalvtk@gmail.com</a>><br>
Subject: Re: [vtkusers] Disable warning about "does not support<br>
stereo"<br>
To: David Cole <<a href="mailto:dlrdave@aol.com">dlrdave@aol.com</a>><br>
Cc: VTK <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<CAHR9pJ0EL7N=<a href="mailto:dv86%2B8OTu_6i-tCcCAfm3QwY_n76Tx9gwjcgww@mail.gmail.com">dv86+8OTu_6i-tCcCAfm3QwY_n76Tx9gwjcgww@mail.gmail.com</a>><br>
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<br>
>> If you are overriding OnChar, simply do not call the parent class when<br>
the '3' key is pressed. The '3' key means "turn on (or off) 3D stereo<br>
viewing" in the default interactor style. And attempting to do that is what<br>
triggers the warning...<br>
<br>
You are missing that if you do this, you will disable not only warning, but<br>
3D functionality on the systems which are able to support it.<br>
<br>
Alex<br>
<br>
<br>
On Wed, Sep 4, 2013 at 3:49 AM, David Cole <<a href="mailto:dlrdave@aol.com">dlrdave@aol.com</a>> wrote:<br>
<br>
> it would be called from<br>
>> vtkInteractorStyle::OnChar()<br>
>><br>
>> You may subclass vtkInteractorStyle you use -<br>
>><br>
>> (for example vtkInteractorStyleTrackballCam**era ), override<br>
>> virtual void OnChar();<br>
>><br>
><br>
><br>
> If you are overriding OnChar, simply do not call the parent class when the<br>
> '3' key is pressed. The '3' key means "turn on (or off) 3D stereo viewing"<br>
> in the default interactor style. And attempting to do that is what triggers<br>
> the warning...<br>
><br>
> Search for "Keypress 3" here:<br>
><br>
> <a href="http://www.vtk.org/doc/**nightly/html/**classvtkInteractorStyle.html" target="_blank">http://www.vtk.org/doc/**nightly/html/**classvtkInteractorStyle.html</a><<a href="http://www.vtk.org/doc/nightly/html/classvtkInteractorStyle.html" target="_blank">http://www.vtk.org/doc/nightly/html/classvtkInteractorStyle.html</a>><br>
><br>
><br>
> HTH,<br>
> David<br>
><br>
><br>
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Message: 7<br>
Date: Wed, 4 Sep 2013 13:50:40 -0700<br>
From: Alex Malyushytskyy <<a href="mailto:alexmalvtk@gmail.com">alexmalvtk@gmail.com</a>><br>
Subject: Re: [vtkusers] Any ideas for showing selected items?<br>
To: Doug Hoppes <<a href="mailto:dhoppes@mbfbioscience.com">dhoppes@mbfbioscience.com</a>><br>
Cc: "<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<CAHR9pJ0v3GtsWJ=Ojsqvuvg9pFjb6fpEk8OfX==<a href="mailto:fWaCm9bL34A@mail.gmail.com">fWaCm9bL34A@mail.gmail.com</a>><br>
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<br>
There are not that many choices. You either outline or change color.<br>
<br>
Outlining works the best for 2D. With all the 3D geometry I worked it is<br>
very time consuming or not informative.<br>
<br>
Color is used in any CAD system I ever worked with. Especially if you need<br>
to select not whole actor but some polygons, edges or nodes,<br>
<br>
Alex<br>
<br>
<br>
<br>
On Wed, Sep 4, 2013 at 5:24 AM, Doug Hoppes <<a href="mailto:dhoppes@mbfbioscience.com">dhoppes@mbfbioscience.com</a>>wrote:<br>
<br>
> Hi all,****<br>
><br>
> ** **<br>
><br>
> Okay, I?m stuck. I have around 20,000 items in my scene.<br>
> I need some sort of indicator for the user to select 10,000 of them. So, I<br>
> have my list of 10,000 selected items. Any ideas on a way to show that the<br>
> objects are selected? VTKActors are pretty heavy weight, so the idea was<br>
> going with a glyph. However, the objects are various meshes/surfaces. So,<br>
> if I create a glyph, it may be inside of the surface and the user won?t be<br>
> able to know if the item is selected.****<br>
><br>
> ** **<br>
><br>
> My only thought is some sort of mesh outline that is a<br>
> glyph, rather than an actor. Note: I can?t just turn all of the selected<br>
> items to wireframes because there is an option to show the surface as a<br>
> wireframe. I thought of making the surface semi-transparent, but the<br>
> user?s also want to control the transparency of the item that is selected.<br>
> ****<br>
><br>
> ** **<br>
><br>
> Doug****<br>
><br>
> _______________________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Please keep messages on-topic and check the VTK FAQ at:<br>
> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
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><br>
><br>
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Message: 8<br>
Date: Wed, 4 Sep 2013 14:10:31 -0700<br>
From: Alex Malyushytskyy <<a href="mailto:alexmalvtk@gmail.com">alexmalvtk@gmail.com</a>><br>
Subject: Re: [vtkusers] Triangulation<br>
To: R R <<a href="mailto:rrane@rocketmail.com">rrane@rocketmail.com</a>><br>
Cc: "<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>" <<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<<a href="mailto:CAHR9pJ39jQonuSKGbhPpq-ECba3ZZ72fdrQGGmDF9qio9igOeQ@mail.gmail.com">CAHR9pJ39jQonuSKGbhPpq-ECba3ZZ72fdrQGGmDF9qio9igOeQ@mail.gmail.com</a>><br>
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<br>
You took set of 3d points,<br>
triangulated their projections on the XOY plane (Z was ignored) and<br>
displayed results in 3D.<br>
<br>
Is it still unclear why you god such results?<br>
<br>
Alex<br>
<br>
<br>
On Sun, Sep 1, 2013 at 11:32 PM, R R <<a href="mailto:rrane@rocketmail.com">rrane@rocketmail.com</a>> wrote:<br>
<br>
> Hello everybody,<br>
><br>
> I've used Delaunay2D on a point cloud data of a face to create a<br>
> triangulated mesh but the result doesn't look good. Could any body please<br>
> help me why the result look like this? (I have attached an image of the<br>
> result)<br>
><br>
> Any help will be greatly appreciated!<br>
><br>
> Thank you so much,<br>
> Rane<br>
><br>
> _______________________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Please keep messages on-topic and check the VTK FAQ at:<br>
> <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
> <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
><br>
><br>
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Message: 9<br>
Date: Wed, 4 Sep 2013 14:47:09 -0700 (PDT)<br>
From: Max <<a href="mailto:smapersmaper@gmail.com">smapersmaper@gmail.com</a>><br>
Subject: Re: [vtkusers] Is this a bug?<br>
To: <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
Message-ID: <<a href="mailto:1378331229396-5723284.post@n5.nabble.com">1378331229396-5723284.post@n5.nabble.com</a>><br>
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<br>
Hi Doug<br>
It is not a bug but a feature.<br>
It happens because the order in which the mesh triangles are rendered<br>
matters.<br>
The solution is to use a filter to change this order to draw the triangles<br>
that are far from the camera first.<br>
I will have the exact filter name when I'm back to work.<br>
<br>
Max<br>
<br>
<br>
<br>
--<br>
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<br>
<br>
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<br>
Message: 10<br>
Date: Wed, 4 Sep 2013 14:50:41 -0700 (PDT)<br>
From: Max <<a href="mailto:smapersmaper@gmail.com">smapersmaper@gmail.com</a>><br>
Subject: Re: [vtkusers] Zooming actor<br>
To: <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
Message-ID: <<a href="mailto:1378331441656-5723285.post@n5.nabble.com">1378331441656-5723285.post@n5.nabble.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
Hi David<br>
If you mean to see the actor closer, use renderer.getActiveCamera().zoom()<br>
If you mean to change its scale use vtkActor.getProperty().setScale()<br>
<br>
Max<br>
<br>
<br>
<br>
--<br>
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<br>
<br>
------------------------------<br>
<br>
Message: 11<br>
Date: Wed, 4 Sep 2013 14:57:20 -0700 (PDT)<br>
From: Max <<a href="mailto:smapersmaper@gmail.com">smapersmaper@gmail.com</a>><br>
Subject: Re: [vtkusers] Disable warning about "does not support<br>
stereo"<br>
To: <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
Message-ID: <<a href="mailto:1378331840589-5723286.post@n5.nabble.com">1378331840589-5723286.post@n5.nabble.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
Another solution is to redirect the warnings to a file.<br>
This way you know the warnings but they don't bother the user.<br>
<br>
Max<br>
<br>
<br>
<br>
--<br>
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<br>
<br>
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<br>
Message: 12<br>
Date: Wed, 4 Sep 2013 21:08:45 -0400<br>
From: Cory Quammen <<a href="mailto:cquammen@cs.unc.edu">cquammen@cs.unc.edu</a>><br>
Subject: Re: [vtkusers] Extract polylines from the surface<br>
To: david bahn <<a href="mailto:bahndavid2006@gmail.com">bahndavid2006@gmail.com</a>>, VTK Mailing List<br>
<<a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a>><br>
Message-ID:<br>
<CANmPiKATiXRze1bAGco+S4vkOriX=<a href="mailto:ERkwpTvKE7N23nRhQXELQ@mail.gmail.com">ERkwpTvKE7N23nRhQXELQ@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
David,<br>
<br>
There is nothing that I know of in VTK that will do exactly what you<br>
want/need. You'll have to extract those lines in some way, perhaps by using<br>
the vtkExtractGeometry filter with an appropriate vtkImplicitFunction, such<br>
as vtkBox.<br>
<br>
- Cory<br>
<br>
<br>
On Wed, Sep 4, 2013 at 8:23 AM, david bahn <<a href="mailto:bahndavid2006@gmail.com">bahndavid2006@gmail.com</a>> wrote:<br>
<br>
> thanks cory, but i have to extract only one edge, which is the yellow one<br>
> given in the figure as i showed you.<br>
><br>
><br>
> On Wed, Sep 4, 2013 at 2:17 PM, Cory Quammen <<a href="mailto:cquammen@cs.unc.edu">cquammen@cs.unc.edu</a>> wrote:<br>
><br>
>> David,<br>
>><br>
>> This example shows you how to get part of the way there:<br>
>><br>
>> <a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/BoundaryEdges" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/BoundaryEdges</a><br>
>><br>
>> It will extract all the boundary edges, though, not just the yellow edge.<br>
>><br>
>> Hope that helps,<br>
>> Cory<br>
>><br>
>><br>
>> On Wed, Sep 4, 2013 at 8:06 AM, david bahn <<a href="mailto:bahndavid2006@gmail.com">bahndavid2006@gmail.com</a>>wrote:<br>
>><br>
>>> Hi cory,<br>
>>> i have to extract polyline(shown in yellow color) as it is<br>
>>> given in the given figure, which i am attaching with this mail<br>
>>><br>
>>><br>
>>><br>
>>> [image: Inline image 1]<br>
>>><br>
>>><br>
>>><br>
>>> On Wed, Sep 4, 2013 at 1:50 PM, Cory Quammen <<a href="mailto:cquammen@cs.unc.edu">cquammen@cs.unc.edu</a>>wrote:<br>
>>><br>
>>>> David,<br>
>>>><br>
>>>> It would help if your questions were more specific. For instance,<br>
>>>> which polylines do you want to extract from your surface?<br>
>>>><br>
>>>> Do you want all the edges between polygons? See<br>
>>>> <a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/ExtractEdges" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/ExtractEdges</a><br>
>>>><br>
>>>> If you want to extract edges that have only one polygon on a side for<br>
>>>> instance (to give one definition of the bounds of the surface), see<br>
>>>> <a href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/BoundaryEdges" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Meshes/BoundaryEdges</a><br>
>>>><br>
>>>> Thanks,<br>
>>>> Cory<br>
>>>><br>
>>>><br>
>>>> On Wed, Sep 4, 2013 at 5:33 AM, david bahn <<a href="mailto:bahndavid2006@gmail.com">bahndavid2006@gmail.com</a>><br>
>>>> wrote:<br>
>>>> > Hi,<br>
>>>> > I have to extract polylines from the surface, anybody can suggest<br>
>>>> me, how<br>
>>>> > can i do this?<br>
>>>> ><br>
>>>> ><br>
>>>> > David<br>
>>>> ><br>
>>>> > _______________________________________________<br>
>>>> > Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
>>>> ><br>
>>>> > Visit other Kitware open-source projects at<br>
>>>> > <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
>>>> ><br>
>>>> > Please keep messages on-topic and check the VTK FAQ at:<br>
>>>> > <a href="http://www.vtk.org/Wiki/VTK_FAQ" target="_blank">http://www.vtk.org/Wiki/VTK_FAQ</a><br>
>>>> ><br>
>>>> > Follow this link to subscribe/unsubscribe:<br>
>>>> > <a href="http://www.vtk.org/mailman/listinfo/vtkusers" target="_blank">http://www.vtk.org/mailman/listinfo/vtkusers</a><br>
>>>> ><br>
>>>><br>
>>>><br>
>>>><br>
>>>> --<br>
>>>> Cory Quammen<br>
>>>> Research Associate<br>
>>>> Department of Computer Science<br>
>>>> The University of North Carolina at Chapel Hill<br>
>>>><br>
>>><br>
>>><br>
>><br>
>><br>
>> --<br>
>> Cory Quammen<br>
>> Research Associate<br>
>> Department of Computer Science<br>
>> The University of North Carolina at Chapel Hill<br>
>><br>
><br>
><br>
<br>
<br>
--<br>
Cory Quammen<br>
Research Associate<br>
Department of Computer Science<br>
The University of North Carolina at Chapel Hill<br>
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End of vtkusers Digest, Vol 113, Issue 8<br>
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