diagram modeling. Each object needs to build a concrete
three-dimensional model. The scenario model is made
according to the situation. We can carry out model action in
accordance with two standards. During panorama view,and
aerial view, because there are many models in the scene,
system processing speed mainly determined by the total
number of models used in the scene, you should try to use
coarse mode. Walk through in some specific buildings or
entering the interior, due to the performance of the detail
composition of the building,we should create a
corresponding close fine mode. Effect picture is shown in
figure.4.