Thank your for your reply, Stephan.
You were right. I changed my code:
> - (void)applicationDidFinishLaunching:(UIApplication *)application {
>
> osg::setNotifyLevel(osg::DEBUG_INFO);
>
> _viewer = new osgViewer::Viewer();
> _root = new osg::Group;
>
>
> //
> //Create a Group with Box, Sphere and Cone
> //
> osg::ref_ptr<osg::ShapeDrawable> shape1 = new osg::ShapeDrawable;
> shape1->setShape(new osg::Box(osg::Vec3(-3.0f, 0.0f, 0.0f), 2.0f, 2.0f,
> 2.0f));
> shape1->setColor(osg::Vec4(1.0f, 0.0f, 0.0f, 0.0f));
>
> osg::ref_ptr<osg::ShapeDrawable> shape2 = new osg::ShapeDrawable;
> shape2->setShape(new osg::Sphere(osg::Vec3(3.0f, 0.0f, 0.0f), 1.0f));
> shape2->setColor(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f));
>
> osg::ref_ptr<osg::ShapeDrawable> shape3 = new osg::ShapeDrawable;
> shape3->setShape(new osg::Cone(osg::Vec3(0.0f, 0.0f, 0.0f), 1.0f, 1.0f));
> shape3->setColor(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f));
>
> osg::ref_ptr<osg::Geode> geode = new osg::Geode;
> geode->addDrawable(shape1.get());
> geode->addDrawable(shape2.get());
> geode->addDrawable(shape3.get());
>
> // try msaa. available for iOS >= 4.0
> osg::DisplaySettings* settings = osg::DisplaySettings::instance();
> settings->setNumMultiSamples(4);
>
> OpenSceneGraph_iOSViewController* touch_handler = new
> OpenSceneGraph_iOSViewController();
>
> unsigned int w(640);
> unsigned int h(480);
>
> osg::GraphicsContext::WindowingSystemInterface* wsi =
> osg::GraphicsContext::getWindowingSystemInterface();
>
> if (wsi)
> {
> wsi->getScreenResolution(0, w, h);
> }
>
> //
> //Camera
> //
> //create and attach ortho camera for hud text
> osg::ref_ptr<osg::Camera> hudCamera = new osg::Camera;
>
> // set the projection matrix
> hudCamera->setProjectionMatrix(osg::Matrix::ortho2D(0,w,0,h));
>
> // set the view matrix
> hudCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
> hudCamera->setViewMatrix(osg::Matrix::identity());
>
> // only clear the depth buffer
> hudCamera->setClearMask(GL_DEPTH_BUFFER_BIT);
>
> // draw subgraph after main camera view.
> hudCamera->setRenderOrder(osg::Camera::PRE_RENDER);;
>
> hudCamera->addChild(touch_handler->getDebugNode());
>
>
> //
> // Texture for Background
> //
> osg::Geometry *rectBackground = new osg::Geometry;
> osg::Vec3Array* vertices = new osg::Vec3Array(4);
> (*vertices)[1].set(0.f, 0.f, 0.f);
> (*vertices)[2].set((float)w, 0.f, 0.f);
> (*vertices)[3].set((float)w, 0.f, (float)h);
> rectBackground->setVertexArray(vertices);
>
> osg::Vec2Array* texcoords = new osg::Vec2Array(4);
> (*texcoords)[0].set(0.0f, (float)h);
> (*texcoords)[1].set(0.0f, 0.0f);
> (*texcoords)[2].set((float)w, 0.0f);
> (*texcoords)[3].set((float)w, (float)h);
> rectBackground->setTexCoordArray(0,texcoords);
>
> osg::Vec3Array* normals = new osg::Vec3Array(1);
> (*normals)[0].set(0.0f,1.0f,0.0f);
> rectBackground->setNormalArray(normals);
> rectBackground->setNormalBinding(osg::Geometry::BIND_OVERALL);
> rectBackground->addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
> osg::Geode* Background_geode = new osg::Geode;
> Background_geode->addDrawable(rectBackground);
>
> // set up the texture state.
> osg::ref_ptr<osg::TextureRectangle> Background_texture = new
> osg::TextureRectangle;
> Background_texture->setDataVariance(osg::Object::DYNAMIC);
>
> // protect from being optimized away as static state.
> Background_texture->setImage(osgDB::readImageFile("imagefile.jpg"));
> osg::StateSet* stateset = rectBackground->getOrCreateStateSet();
>
> stateset->setTextureAttributeAndModes(0,Background_texture,osg::StateAttribute::ON);
>
>
>
> //
> // root
> //
> hudCamera->addChild(Background_geode);
>
> osg::Node* one = hudCamera.get();
> osg::Node* two = geode.get();
>
> one->getOrCreateStateSet()->setRenderBinDetails(1, "RenderBin");
> two->getOrCreateStateSet()->setRenderBinDetails(2, "RenderBin");
>
> _root->addChild(one);
> _root->addChild(two);
>
> _root->getOrCreateStateSet()->setMode(GL_DEPTH_BITS,
> osg::StateAttribute::OFF);
> two->getOrCreateStateSet()->setMode(GL_DEPTH_BITS,
> osg::StateAttribute::ON);
>
> //
> // viewer
> //
> _viewer->addEventHandler(touch_handler);
> _viewer->setSceneData(_root.get());
> _viewer->setCameraManipulator(new osgGA::MultiTouchTrackballManipulator);
> _viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
>
>
> //SingleThreaded DrawTheadPerContext
> _viewer->realize();
> _viewer->frame();
> osg::setNotifyLevel(osg::INFO);
>
> [NSTimer scheduledTimerWithTimeInterval:1.0/30.0 target:self
> selector:@selector(updateScene) userInfo:nil repeats:YES];
>
> //Configure and start accelerometer
> [[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 /
> kAccelerometerFrequency)];
> [[UIAccelerometer sharedAccelerometer] setDelegate:self];
> }
Now a geode with geometry is created and it is added to the group. I don´t
know, which step i had to do after this. Can you give some advice. I have
already used the search function. But i cannot find the right answer.
Additionaly I get this warning:
> Warning: TextureRectangle::apply(..) failed, texture rectangle is not support
> by your OpenGL drivers.
> Warning: TextureRectangle::apply(..) failed, texture rectangle is not support
> by your OpenGL drivers.
> Warning: detected OpenGL error 'invalid enumerant' at after
> RenderBin::draw(..)
I have Mac OS X 10.6.7.
Can you please give me any advice or link that could help me.
Cheers,
Büsra
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=41397#41397
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