Loic Cayou wrote:
Hi all,
I'm a real beginner on OSG and I want use it with Qt 4.5 on Win32.
I have to export an activeX based on OSG (dev. with VS) on a Qt application. The main purpose it's to display an osg model, and to interactive with it (mouse and keyboard). I already use the adapterWidget class, that I found on example/osgViewerQt source browser. If I just use this class, my application run properly, but, this example use setSceneData() and only this method. I must use setSceneData() and addChild/removeChild methods in my application because I need show/hide some part of osg model when the user will want it.
There's no reason you can't use addChild/removeChild in that example.
And if I use this method, I get some graphics bug when I rotate the model with
mouse. Indeed, some surfaces disappear to the view, and if I rotate my model it
gives an impression of blinking. Also some parts of my model are shown over other
parts, while they shouldn't. It's seem to be a zBuffer problem (frustum?). I use
setProjectionMatrixAsOrtho instead setProjectionMatrixAsFrustum. If I use frustum
my model disappear... With setProjectionMatrixAsOrtho, I can change near & far
values, but it doesn't change anything...
You don't want to use Ortho or Ortho2D for this. It's completely the
wrong approach for this kind of use case. Try using
setProjectionMatrixAsPerspective instead, with a fov of 45.0 and the
aspect ratio set appropriately. The viewer should handle setting the
near/far planes for you, but you can use 0.01 and 1000.0 as starting values.
--"J"
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