Research And Implementation Of A Three-dimensional Agricultural Virtual Simulation System Based On OSG Loess Hilly And Gully Region

In the environment of computer technology in today's society thriving, high-tech virtual reality technology as a virtual simulation technology has been applied to a number of areas, in particular it plays an important role in terms of terrain simulation. Loess hilly region is the most serious soil erosion in the Loess Plateau region, using the "three-dimensional agriculture" governance business model can efficiently solve the problem of virtual simulation technology as a technical support perspective agricultural model, becoming the loess hilly region remediation process necessary link. OSG engine use open source nature of three-dimensional graphics and high-performance capabilities to loess hilly region as the main object of study, the application of C++programming language and 3DSMAX modeling software to build a dynamic, interactive loess hilly region of virtual simulation system, effective solve the processing efficiency of large-scale farmland dynamic scene models and many different types of crops and a variety of models of dynamic crop models and cut scenes update problem, the real show in Loess Hilly region panoramic perspective of agricultural planning, Loess Hilly research and management area provides a convenient, intuitive, strong immersive visual decision support services.The main contents of this paper include:Firstly, from the construction of Loess Hilly Region dimensional terrain model, a variety of models of biological crop protection forest belt of farmland and basic model; by OSG engine load model a variety of crops, farmland and set the model to model engineering facilities Cellar in Loess Hilly area, slope, ditch three belts and based on land suitability characteristics delineated six zones in the corresponding position on the scene, to establish a perspective Loess Hilly area agriculture "three zones sixth" mode scene model, add a roaming gully region sky box cover, navigation charts and other visual features render the scene; the use of collision detection principle, human-computer interaction through a variety of dynamic loading mechanism to control crop models, replace, move and delete, for scene update. Finally, in order to study the basis of the above-mentioned key technologies, the development of loess hilly region OSG based stereoscopic agriculture virtual simulation system.