nobody an idea?
i tried another thing, but there is no sceneobject on the image
ive also tried the osgscreencapture example
is there a way to get rid of the callback?
i need only one screenshot
Code:
void render()
{
osgUtil::SceneView *SceneView = new osgUtil::SceneView;
SceneView->setDefaults();
osg::ref_ptr<osg::Node> pNode = osgDB::readNodeFile( "C:/cessna.osg" );
SceneView->setSceneData( pNode );
osg::ref_ptr<osg::Camera> pCameraNode = new osg::Camera;
const osg::BoundingSphere& bs = pNode->getBound();
int r = bs.radius();
pCameraNode->setProjectionMatrixAsOrtho2D( -r, r, -r, r );
pCameraNode->setViewMatrixAsLookAt( osg::Vec3( r*100,-r*100, r*100 ) ,
osg::Vec3(bs.center()[0], bs.center()[1], bs.center()[2]
),osg::Vec3(0.0f,0.0f,1.0f));
osg::ref_ptr<osg::Image> pImage = new osg::Image;
const osg::Viewport* Viewport = SceneView->getViewport();
int Width = 1024;
int Height = 768;
pImage->allocateImage(Width, Height, 1, GL_RGB, GL_UNSIGNED_BYTE);
pCameraNode->setClearColor(SceneView->getClearColor());
pCameraNode->setViewport(0, 0, Width, Height);
//pCameraNode->setRenderOrder(osg::Camera::POST_RENDER);
pCameraNode->setRenderOrder(osg::Camera::PRE_RENDER);
pCameraNode->setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT,
osg::Camera::FRAME_BUFFER);
//pCameraNode->setRenderTargetImplementation(
osg::CameraNode::PIXEL_BUFFER );
pCameraNode->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
pCameraNode->setReferenceFrame(osg::Camera::ABSOLUTE_RF);
pCameraNode->setProjectionMatrix(SceneView->getProjectionMatrix());
pCameraNode->setViewMatrix(SceneView->getViewMatrix());
pCameraNode->attach( osg::Camera::COLOR_BUFFER, pImage.get());
pCameraNode->addChild(pNode);
SceneView->setSceneData(pCameraNode.get());
SceneView->update();
SceneView->cull();
SceneView->draw();
osgDB::writeImageFile(*pImage, "c:/tools/test.png");
}
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=38527#38527
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