文档介绍：Subject :Research on Daylight in Building Based on OpenGL
Specialty :Cartography and Geographic Information System
Name :Yuanxia Li (signature)
Instructor :Yaomin Zhang (signature)
ABSTRACT
At this stage, with the continuous advance of China's urban transformation and construction of the urban population and rapid growth, living with the Urban Renewal of construction and development, reengineering and restructuring of the Central Business District Development and construction of urban land utilization andincrease, decreasing the distance between buildings, residential sunshine less and less time, improve land utilization to improve and to improve the increasingly acute contradictions between the urban living environment.
With the deepening of the three-dimensional sunshine and analysis system, the traditional hand calculation methods and sunlight analysis system based on the CAD platform for secondary development has been difficult to meet the urban planning program, fast, accurate, and easily sunshine analysis , this paper proposes the use of OpenGL and 3D modeling 3D buildings sunshine analysis system.
Firstly, analysis to study the original two-dimensional CAD sunshine analytical methods and the existing three-dimensional sunshine analytical methods to study the existing sunlight analysis algorithm to explore within a given time, building dynamic shadows calculation methods, buildingbetween block.
Secondly,3D Max2010 create a simple 3D building models, texture mapping. At the
same time, in-depth study of the OpenGL low-level graphics algorithms, and use the OpenGL powerful graphics rendering, 3D scene simulation
Finally, with Visual C + + development environment, using the MFC class library design and development of three-dimensional building sunshine analysis system, to achieve a 3D building model scene roaming, as well as the bright sunshine duration calculation, sunshine and shadow analysis functions.
Key words :OpenGL;Three-