第二十届中国虚拟现实大会 (ChinaVR 2020)

The virtual city first emphasizes the simplification of the model, which is determined by the real-time requirement of virtual reality. The modern city include wide roads, hospitals, clubs, parks, restaurants and clubs buildings. The city is surrounded with offshore turbines to collect and store wind energy for mechanical power generate free of cost.
The simple framework is adopted to replace the complex model. In order to ensure the authenticity, the way of material adding pictures is adopted to make up for the vision. Reduce the number of polygons, which can greatly improve the performance of execution. The use of greyscale textures enhances the beauty of model and make natural look view. Use as little light as possible, which will effectively speed up the rendering. Use the billboard node, which allows the use of a two-dimensional image in the scene to simulate a three-dimensional shape and rotate, always facing the viewer. This method not only reduces the document but also does not affect the real effect. It can be used to make trees, telephone poles, road signs, fire hydrants and other auxiliary objects. The large scene is divided into several relatively independent small scenes, and the connection relationship is established for the logically separated parts of the scene through Anchor node. The wind city model is designed by using three tools named as 3ds Max for model design, photoshop for textures and finally Twinmotion for rendering.
 

虚拟现实技术,虚拟城市