The Electromagnetic Field Of 3d Visualization Technology, And Achieve

Visualization in Scientific Computing can convert large amounts of data into structured space geometry, color, texture, animation and other visual signals for displaying. This technology can be fully applied to demonstrate certain complexly physical environment and simulate system dynamic process, such as computational fluid dynamics, medical imaging, geological exploration, weather, and other fields. This paper researches the 3D visualization of electromagnetic field based on virtual reality environment and the main contents include electromagnetic data visualization, complex electromagnetic phenomena visualization, as well as electromagnetic space environment visualization.By using computer graphics technology, the visual reproduction for some complex electromagnetic environment and electromagnetic phenomena can provide better data basis and help for some people's researching, decision-making and commanding. Electromagnetic field visualization is an integrated technology, for which we need to consider the type diversity of the electromagnetic data, the complexity of the magnetic field and other physical characteristics of the environment. We realize the scalar and vector visualization of electromagnetic field by using the Marching Cubes and Hedgehog modeling methods and establish, an electromagnetic data visualization pipeline mode based on object-oriented methods, through encapsulating the visualization data sets and corresponding operations (mapping, rendering, and others) as the target concept. On the other hand, in response to the interactive visualization for large scope of electromagnetic environment, we block and storage the electromagnetic data through octree structure. At the same time, making use of level of detail technology, we realize real-time rendering.Further more, based on the basic dynamic generation, updating and disappear characteristics of afterglow, the idea of particle systems was proposed to represent afterglow model in radar scanning process simulation. The realization of this simulation can provide visual data analysis basis for low-flying aircraft and establish virtual environment for flight simulation visualization. Through the visualization of the environment, we can analyze the changes in the electromagnetic which caused by some factors like the terrain effectively. In the 3D visualization system for the electromagnetic field, we consider and realize the space environment visualization in which electromagnetic field existing, including terrain, landform environment and so on. The effect of space environment visualization can consumedly enhance the immersion characteristic of system and fully demonstrate the distribution of the electromagnetic field in the virtual reality environment, which can provide better help for people grasping the nature of electromagnetic fields.