ABSTRACT
At present, there are many architectural design personnel can carry the expected virtual performance to the scheme by computer when protocol the design scheme firstly. Having a virtual visit to the building design scheme quickly and accurately through the 3D CAD system. Compare the virtual space data with the system database, the entity object and space 3D digital model can be accurately simulated. After the comparison, analyzing and assessing the design scheme carefully through the evaluation function of the internal system and making the feedback about whether the each index coefficient in the scheme is in line with the standard, whether the model is correct, whether the energy saving can reach to the maximum and so on.
