Atm "QML_BAD_GUI_RENDER_LOOP" forces the application to run the UI on the main thread because forwarding QML events to VTK crashes the application.

Hi Q

I am trying to extend your project by introducing pickers. I am thinking something in the line of

Vtk.Viewer {
  Vtk.CellPicker {
    id: picker
    // automatically registered to parent object
  }

  Vtk.AxesActor }
    id: axes
    Component.onCompleted: {
      picker.addPicker(axes) // The actor is assigned to the list of pickable objects
    }
  }
}

How would you recommend distributing the functionality for picking objects between Viewer, Interactor, Renderer?

If you have any input, let me know.

Thanks in advance

I noticed all QML types like vtk.actor are registered to qmlengine by qmlRegisterType family functions in c++ code.Have you cansidered to make them a standalone QML module use qmldir so everyone can use it in QML like the native QML types without register it in c++ code.?

The build path of vtk should be QuickVtk/denpendencies/src instead of QuickVtk/lib/src

I have to disable auto-format function of my code editor when I modify code to keep the code style, a code formatter may help with this.

Clang-tidy is a good choice.

How would one reuse a single actor in multiple render windows?

Row {
  Vtk.Viewer {
    Vtk.Actor { id: actor }
  }
  Vtk.Viewer {
    // same actor
  }
}

Of course you could instantiate the same actor twice, but I'd like to load it only once.

Maybe something like this?

Vtk.Actor {
  id: actor
  ...
}

Row {
  Vtk.Viewer {
    Vtk.ActorReference {
      actor: actor
    }
  }
  Vtk.Viewer {
    Vtk.ActorReference {
      actor: actor
    }
  }
} 

if the text exceeds the TextEdit's width, it gets cut off and horizontal scrolling isn't working.

I just rebuild the project with VTK 8.2.0 and Qt 5.12.3 on Ubuntu 18.04, and it seems the vtk windows is just 1 white pixel. When I resize it is sometimes shows some weird colored blocks. Do you experience the same on Linux?

The CMake file demands VTK v7.1.0 but VTK only just recently released 7.0.0.. Am I missing something?

Thanks

Thanks to José Jaramillo for reporting this issue

• might be related to #35 (so broken VTK rendering might in fact be caused by the newly updated dependencies)
• I'll try to reproduce this on my windows machine

Is it possible to use vtkplanewidget & vtksplinewidget, etc. ?

The post-build command defined in CMake is not performed in Visual Studio unless the source is changed. This is a problem when editing only *qml files since changes won't be visible in the application until the next modification of c++ code.

Hello,

i'm getting the following error on windows

error: invalid path 'res/fonts/Fira_Code/FiraCode-VariableFont:wght.ttf'
fatal: unable to checkout working tree

i think the filename contains invalid characters in windows

Hi, great work!
QuickVtk is one of the few programs I found allowing to embed vtk into a qml application.

It would be interesting to have a standalone library with only the classes needed to embed vtk inside qt/qml. Do you think it would be possible to separate that part from the core of the application?

Thanks!

Seems like the vtkRenderWindowInteractor causes a crash on Linux systems

Hey,guys!
Can i include this in my project as 3rd party libs? My app is written in qml.

I've followed the build instructions but when I try to build and run in xcode the build succeeds but when it tries to run it appears to fail on line 72 in quickAppEngine.cpp:

auto rootObject = engine->rootObjects().at(0);
"index out of range"

I've tried with a Qt 12, 13 and the latest 14 with the same result. Happy to help you debug this as good as I can but I have limited experience with c++. If you point me in the right direction I might be able to get somewhere.

vtkquick_stacktrace.txt

I use CMake 3.16.12.
During configure project, CMake Error at CMakeLists.txt:107 (AddApplicationSources):
Unknown CMake command "AddApplicationSources". error occurred.

Seems like Qt 5.9.1 broke some things in QuickVtk... UI is broken and references to some C++ controllers are missing from the QML side. I'm on it.

RayCaster not runable.

vtkOpenGLGPUVolumeRayCastMapper.cxx, line 4042
vtkOpenGLGPUVolumeRayCastMapper (0x10d19da00): Rendering failed because the following OpenGL extensions are required but not supported: OpenGL 1.3 is required but not supported

I still haven't figured out the best way of implementing a decent Code Editor in QML...

The QML TextEdit object provides access to a QQuickTextDocument instance, but the docs say that You are not allowed to modify the document.... So my guess is that the QTextCursor API can't be used for text processing. So there's still some research to do..

Initially, all glyphs are rendered correctly in QuickVtk. Displaying the viewer (rendering the FBO) for the first time results in font rendering glitches.

src/Core/Vtk/Internal/quickVtkFboOffscreenWindow.cpp:77:19: error: ‘class quick::Vtk::FboOffscreenWindow’ has no member named ‘TextureObjects’; did you mean ‘NoiseTextureObject’

My environment:
Debian 10
g++ 8.3.0-6. I
VTK-8.20

Are these member variables of the parents class (perhaps only using iOS?)

After I installed, the QuickVTK couldn't find file:///home/matt/workspace/QuickVtk/Resources/qml/App/window.qml: File not found

I found this file in QuickVtk/res/qml/App/window.qml, so I made a simlink to get around this for now.

I compiled and ran QuickVtk on Windows using MSVC17 and Qt5.13 and Vtk8.2 with external module built.
I tried to resize the window which lead to the program locking up. It goes into an infinite loop doing re-layouts.

Is it possible to use Vtk9.0.0, since I know Vtk9.0.0 fixed many issues.

Since OpenGL2 is the default rendering backend for VTK >= 7.0, this should be supported in QuickVtk.

Having all examples available from the application menu is more convenient than loading them from the res directory.

Specs for the file: link

When click on QuickVtk.exe, message boxes pop out saying that some dlls are not found, like vtkRenderingExternal-7.1.dll, vtkFiltersTexture-7.1.dll
But I'm sure I have had these DLLs and I have added the path to them to debugging->environment
I build QuickVtk under Windows

After successful build, qiuckVTK freezes, when you type something in the editor.
Maybe de-activating the Div, when no qml file is opened?

The editor text cursor can be moved outside of the visible area. The TextEdit component should automatically adjust the scroll position so that the cursor remains visible to the user.

This happens when:

• navigating lines via arrow keys
• jump to top (CMD + Up)
• jump to end (CMD + Down)
• copy/paste

OS: win10
Build configuration: Release. With Debug config works well.
VTK: version 7.1.0 rc1
QT: version: 5.7.0

Reproduce:

• run app
• click open, select any qml example from QuickVtk\res\examples\qml\simple
• app crashes

• Qt 5.12.1 + VTK 8.2.0 builds are broken on macOS 10.14
• might be interesting to check out if this error is caused by the updated dependencies (API changes maybe) or the latest macOS version...
• needs some research and might take a while

On Linux, the cmake files because the QuickVTK target isn't defined. I commented out the if condition on line 130 and it got it to work.

Also, anyone building on Linux needs to define -DCMAKE_CXX_FLAGS="--std=c++11"

Assigning an interactor to the renderer results in a nullptr exception on Windows but works fine on Mac OS X.

Some actions like CMD + N should require a confirmation before dumping text from the editor