The Design And Implementation Of 3D Visualization Sunshine Analysis System On Architecture

With the rapid development of economic, the residents have a higher demand about the standards and requirements on the living conditions. Sunlight is one of the main factors to consider residential comfort which have gradually been concerned about..The quantity of disputes caused by the lighting right is also increasing.In addition,sunlight analysis report is one of the necessary materials which are submitted when the project is completed.So the demand for sunshine analysis software has increased rapidly.Since the applicability and limitations of the analysis method itself,the traditional manual methods of sunshine analysis and two-dimensional CAD sunshine analysis does not apply to a wide variety of buildings.On the background of the rapid development in the three-dimensional visualization and modeling technology, combining the three-dimensional technology and sunshine to develop a three-dimensional sunshine analysis system has become possible.Basing on this starting point, the paper studied the building visualization sunshine analysis system and completed the design and implementation of a three-dimensional sunshine analysis system.The main achievements of this paper and the work is as follows:(1)After the analysis of the coordinate system and the time system,the paper ascertains paramerers which reflect the trajectory and the calculation model of the sun.(2)In summing up the advantages and disadvantages of stick shadow sunshine diagram, two-dimensional CAD sunshine analysis method,conical surface method, the paper put forward the shadow analysis method based on undulating terrain, to solve the situation occurred in the undulating surface of shadows deformation conditions, and proposed correction algorithms.(3)The paper does a series of experiments on these methods about the existing three-dimensional visualization modeling method. By contrast, we determined to use the method in which two-dimensional CAD design picture and Sketch Up modeling method was combined to get the model. The method has been used as the primary means of three-dimensional modeling of sunshine analysis system in this paper. The corresponding experiments are also did with regard to the three-dimensional visualization elements in the Unity3 D visualization platform.(4) Basing on the Unity3 D platform, the paper designs three-dimensional sunshine analysis system. The system achieves the first view angle and roaming, sunshine calculation, shadow analysis functions and so on.Collecting the data of sunlight, and verifying the accuracy of the system.