Building shadows

Hey I wanted to find out how the building shadows are rendered (e.g. what size/offset do they use). I need to render them with Images so I need to specify the size/offset myself. Anybody has any information?

Which shadows? The ones attached to the buildings when they're constructed? or the ones generated when you click "Calculate Shadows and Save Map"?

Yes the ones attached to the buildings. Calculate shadows does nothing for buildings.