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In recent years , with the virtual reality technology and development of computer graphics , dynamic effects on the natural features realistic simulation has become a research hotspot in games, animation, film , advertising, visual simulation, military and other fields , with urgent application requirements. Currently, the main areas of research based on OpenGL, Direct3D implementation method , the generated scene interactivity is poor, and the model file is large, the network applications there are some limitations , however , with the popularity of Internet technology , Web-based ever increasing application demands . In this paper, this problem , the use of network-based on common natural scenery VRML animation simulations were performed research and application , specifically including the wind in the wheat fluctuations trees swaying in the wind , fountain, wave simulation . The realization of the text based on VRML characteristics of the wheat volatility effect simulation process, using skeleton modeling ideas to complete the modeling of wheat , that \animated simulation study provides a new way of thinking ; trees swaying in the wind simulation, using a combination of geometry and image parametric modeling approach, based on material mechanics theory to calculate the twigs and leaves in the wind the movement , a good simulated trees swaying in the wind dynamic effects ; fountain for dynamic simulation , through the classical particle system to improve, with a certain number of repetitive motion of particles instead of constantly generated a large number of particles , greatly reducing the amount of computation , to ensure a good time sex ; animation of the waves , the waves through the common model of research and analysis , select a relatively simple wave model , specific to the use of VRML elevation grid nodes , combined with texture mapping and LOD techniques to achieve a real-time simulation of waves . The above animation analog integrated into the development of three-dimensional scene modeling platform , the experimental results demonstrate the feasibility of the method , to ensure the real-time network browsing and interaction at the same time , be able to get a strong sense of realism .
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