Hi, I got a problem when implementing code to transform from screen
coordinate to world coordinate.
Here is the code:
void ASDSPickHandler::pick(const osgGA::GUIEventAdapter &ea,
osgViewer::Viewer *viewer)
{
......
osg::Vec3f primitivePosition(ea.getX(), ea.getY(), 0.0f);
osg::Matrix viewMatrix = viewer->getCamera()->getViewMatrix();
osg::Matrix projectionMatrix =
viewer->getCamera()->getProjectionMatrix();
osg::Matrix windowMatrix =
viewer->getCamera()->getViewport()->computeWindowMatrix();
osg::Matrix cameraMatrix = viewMatrix * projectionMatrix *
windowMatrix;
osg::Matrix inverseCameraMatrix;
inverseCameraMatrix.invert(cameraMatrix);
primitivePosition = primitivePosition * inverseCameraMatrix;
......
}
Here, the output of "primitivePosition" seems not correct. Just don't know
what happened. Can you guys help me out? Thanks in advance!
Ruqin
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