Visualizing a 3D scene in Qt [closed] - qt

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I need to visualize 3D models consisting of ~100.000 triangles in a Qt application. Colors, zoom in/out and rotation are required. The solution must work under Linux and Windows.
Should I use OpenGL directly or would you recommend using a certain library? There are game engines (ClanLib,...), but I'm not sure if they are appropriate at all. A good point to start would be appreciated.

You should consider the QtOpenGL module that comes with Qt. Take a look at the provided examples and look on YouTube for Qt OpenGL to find a few screencasts.
In Qt 4.8 that was just released a few days ago, QtOpenGL added support for multi-threading.

You can use OpenGL calls directly in a QGLWidget, so don't think that you may be constrained by Qt's OpenGL support.

You can do this yourself in QtOpenGL but you might find using a scenegraph is easier.
Open scenegraph plays nicely with Qt

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Example large scale project using QML? [closed]

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I was searching for a open software project (medium or large scale) that uses QML and could be taken as an example of QML/QtQuick usage in practice. There are indeed a lot of small examples that come with the documentation but are there any actively developed projects?
Plasma Media Center and Qt Media Hub are the two I could find but they seem a little dated or not really maintained (I may be wrong here)
Search github.
There is an open source desktop environement that is mostly in Qml and is actively developed :
https://github.com/hawaii-desktop
There is also SDDM which is a smaller project :
https://github.com/sddm/sddm
Finally you could check out : qml-material which implements Google's material UI as QML modules.
https://github.com/papyros/qml-material
Edit :
For generically searching the most trending QML projects on GitHub :
https://github.com/trending/qml

JavaFX: Rotation based slider/selector (Radio-Knob) [closed]

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I was playing around on the JavaFX Scene Builder 2.0 today, and noticed that the rotation options for various controls have a circular 'slider'.
Image: http://i.imgur.com/kE6N7Xo.gif
I really like this, and I want to use it in a small project I'm working on, but I don't think it's a standard javafx control. It looks as though it's been designed to fit the look and feel of JavaFX, and being that it's part of a piece of software developed by the guys behind Java, I would assume it's got to be somewhere!
Do you know whether this is included in the standard javafx libraries? I'd rather not have to make it myself if I can help it!
Thanks for your help!
SceneBuilder 2.0 is open source with a 3 clause BSD license (which is liberal as far as the licensing spectrum goes).
You can find source for the "RotateEditor" control in this bitbucket mirror:
RotateEditor.java
RotateEditor.fxml
The SceneBuilder source is split into two parts - the SceneBuilder application and a separate support library called SceneBuilderKit. If you download the source from bitbucket and compile the SceneBuilderKit, you should be able to use the RotateEditor (and a bunch of other features that SceneBuilder provides). I'm not sure if you will be able to use it directly in your application without modification or if you will need to make some small changes to successfully integrate it.
Build instructions for SceneBuilder are on the open-jfx wiki, but you probably not need to build the whole of JavaFX to get what you need.
If the RotateEditor is not in the ControlsFX project, you could consider re-packaging it and donating it to ControlsFX as it would be nice to have such a control in a dedicated controls library.

List of Active Open Source Projects built by Adobe AIR/Flex [closed]

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Could someone share list of active and popular open source Rich Internet Applications or desktop application (not library or framework) that are built by Adobe AIR/Flex? The popularity and quality I am looking for are something like Azureus/Vuze (Java), XBMC etc. Can't find good example from http://www.riaforge.org.
Thanks.
Check out sourceforge too: http://sourceforge.net/search/?q=adobe+air
Make sure, you will have also a look at GitHub:
https://github.com/search?langOverride=&q=Flex&repo=&start_value=1&type=Repositories
Not sure what you are looking for exactly, but you might want to check out Tour de Flex which has a bunch of great quick examples http://www.adobe.com/devnet/flex/tourdeflex.html that offer a great primer. I also always find myself visiting http://blog.flexexamples.com/ , which offers a large variety of source. Outside of that site, flash/flex has a bunch of other flex evangelist that also have some pretty comprehensive sites.
Hope that helps.

What are some good Qt related blogs/forums/sites to follow? [closed]

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What are some good Qt related blogs/forums/sites to follow so one can learn more about developing with Qt?
Also maybe some good (in terms of user interface richness) opensource apps that one can read the source code and learn from them.
Qt Developer Network Forum
PlanetQt
Try this too.
Qt-articles
I just wanted to mention for the french speaking community :
qtfr
and the qt subdomain of developpez :
qt.developpez
Also http://www.qtcentre.org/content/ and its wiki may be usable
Qt forum is another option.
http://qt-apps.org/ has a number of open source applications-source generally one of the download options.
http://planetkde.org/ is a kde blog aggregator but there is occasionaly some qt-only stuff.
I enjoy this one too.
http://ariya.blogspot.com/

Is there a good source for 3rd party QT GUI controls? [closed]

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I have tried to find them through Google but haven't had much luck. I know the number of 3rd party controls is not as big as .NET or Java, but surely there are some out there better than what comes with the library?
Qwt is a source for graphing and technical components and Solutions Catalog has the property browser as well as many other useful widgets.
Also available are the Embedded Widget Demos, ofi-labs, and qt-labs.
ofi-labs is by a former Qt employee, the others are official.
Edit: Almost forgot, diagramming is covered by this example: GraphicsView - Diagram Scene
free: qt-apps.org
proprietary: qt-prop.org
there are Widgets and Components categories
Look at the nice Qt Property Browser/Editor: http://doc.trolltech.com/solutions/4/qtpropertybrowser/index.html
It's not exactly third party, but take a look at the Qt Solutions Catalog. Qt Solutions has been discontinued, but there is an archive.
There's also wwWidgets, although I've never had cause to use anything it provides.
For a property editing widget, see this SO question.
I doubt you'll find a general purpose diagramming widget that works exactly the way you want it to. You're probably going to have to do some work yourself on this one. To get started, take a look at The Graphics View Framework.
Take another look at the lists of widgets and classes Qt provides. There's an awful lot there, and I rarely find Qt to be deficient. When I need something special, it's usually not too hard to build a custom widget that does what I need.

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