Project Point

//Assign the pointer according to your code
IRenderEngine* piRenderEngine = NULL; 

//Project the center of the dataset
VERTEX3D v(0, 0, 0);

POINT pt;
ZEROMEMORY(pt):

if(piRenderEngine != NULL)
{
    hr = piRenderEngine->ProjectPoint(&v, &pt, 1);
    if(FAILED(hr)) return hr;
}