The resolution of the lightmaps in texels per world unit, so a value of 50 and a 10unit by 10unit plane will result in the plane occupying 500x500 pixels in the lightmap.

First, the thesis has discussed the position of the rolling mill of sharp steel in the national economy, and makes the general instruction for 300/500 unit plane arrangement.

General considerate the sediment model, the law of current distribution and the plane heterogeneous in all kinds of reservoir, describe the distribution of flow unit in plain, section and space.