Development Of Visualization For Virtual Atmospheric Environment Data

The comprehensive natural environment contains many fields.The atmospheric environment is an important part.It has the characteristics of complicated environmental factors,many parameters,wide resolution and abundant data.In the past,the study of atmospheric environment data stays in the stage of modeling and simulation,making the direct study difficult.Since the visualization in scientific computing has been developed,the researchers have applied the visualization technology to the data analysis to provide an intuitive and accurate view of the atmospheric environment.At present,the display software for environment data such as Visual5 D can only display the properties of the environment data on the software itself and can not be combined with the virtual test or virtual scene.The virtual data can not be displayed at the same time when the virtual test runs,and the test personnel can not easily observe the environmental data Impact on Virtual Trials.Bas ed on MAK’s VR-Vantage software,we developed three-dimensional scene display software,which can display the virtual test process.In this paper,the environment display function is added on the basis of the 3D scene display software,and the attributes i n the atmospheric environment are visualized to facilitate the observation of the impact of the environmental data on the virtual test.In this paper,the environmental factors such as wind,temperature,air pressure and water vapor ratio are analyzed,and the global distribution of environmental data in three-dimensional space is displayed according to the scientific visualization technology.For the atmospheric data,such as the wind field and other vector data field using vector arrows as the basic eleme nts to display;for atmospheric data,such as temperature and other scalar data field using the dot as the basic elements for display.T he scalar data in the atmospheric data are analyzed by contours in the two-dimensional plane,and the scalar data in the three-dimensional space are analyzed by isometric surface.At the same time,the data is mapped out of the dot entities and contour elements,and the isosurface elements are displayed based on the Open Scene Graph rendering engine.Using the UML language to design the virtual atmospheric environment data display software,including demand analysis,model design and so on.T he three-dimensional scene display software based on the addition of data read function,drawing attribute configuration function,cont our tracking function,isoparametric construction function and primitive rendering function,supports the user with the configuration of display attributes and a variety of data display.Finally,in the H-T ENA test support architecture,the function test a nd integration test of the virtual atmospheric environment data display software show that the software is running normally,and the environmental data can be displayed directly according to the attributes set by the user.The software interface is friendly,reliably operated.