Could you provide a screenshot illustrating the distortion?
W.r.t othographic projection, see include/osg/Camera header for its
setProjectionMatrxiAsOrtho2D. Also see the example osghud.
Robert.
On 5/31/07, Johannes Brunen <[EMAIL PROTECTED]> wrote:
Hi,
I'm in the process of integrating OSG into a gui toolkit. I'm using a
composite viewer and
can see my sample geometry on the window canvas. Howerver, the rendered
geometry is
distorted in the y direction of the window. Can anyone tell me what I
have missed in my
toolkit integration. The following is a sketch of what I have done:
Inside the create function of my toolkit window:
PIXELFORMATDESCRIPTOR pixelFormat = { ... };
HDC hdc = ::GetDC(_hWnd);
int pixelFormatIndex = ::ChoosePixelFormat(hdc, &pixelFormat);
::SetPixelFormat(hdc, pixelFormatIndex, &pixelFormat)
RECT rect;
::GetClientRect(_hWnd, &rect);
osg::ref_ptr<osg::GraphicsContext::Traits> traits = new
osg::GraphicsContext::Traits;
traits->inheritedWindowData = new
osgViewer::GraphicsWindowWin32::WindowData(_hWnd);
traits->x = rect.left;
traits->y = rect.top;
traits->width = rect.right - rect.left;
traits->height = rect.bottom - rect.top;
traits->windowDecoration = false;
traits->doubleBuffer = true;
traits->sharedContext = 0;
traits->supportsResize = true;
traits->depth = 32;
osg::ref_ptr<osg::GraphicsContext> gc =
osg::GraphicsContext::createGraphicsContext(traits.get());
osg::ref_ptr<osg::Group> root = new osg::Group;
root->addChild(createScene());
osgUtil::Optimizer optimizer;
optimizer.optimize(root.get());
optimizer.reset();
osg::ref_ptr<osgViewer::CompositeViewer> viewer = new
osgViewer::CompositeViewer;
osgViewer::View* view = new osgViewer::View;
view->setSceneData(root.get());
view->getCamera()->setGraphicsContext(gc.get());
view->getCamera()->setViewport(new osg::Viewport(0,0, traits->width,
traits->height));
view->setCameraManipulator(new osgGA::TrackballManipulator);
viewer->addView(view);
osgDB::writeNodeFile(*(root.get()), "Simple.osg" );
StartRenderLoop();
On loading the written 'Simple.osg' file with the osgViewer.exe demo
application everything looks pretty fine.
But in my render window the geometry is distorted in one direction.
Additionally, I would like to use an orthographic projection camera. Is
there any convenience functionallity for
setting up the camera for this.
Johannes
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