This article described the techniques of data prefetch, in the three-dimensional GIS software, real-time rendering of three-dimensional scene from the basic optimization theory. This article elaborated data prefetch strategy. 阐述了在三维GIS软件中的数据预取技术,从三维场景实时绘制的基本优化理论出发,详细阐述了数据预取的策略。
The scene system provides basic support for the game, configures camera view for the window, creates time and space of the game, and provides lighting and particle effects. 游戏场景系统为游戏提供基础支持、设定窗口的摄影机视角、建立游戏的时间与空间体系,并引入光线和渲染效果。
Method Water samples directly collected at the scene for surveying the basic condition of centralized and disperse water supply by residual chlorine colorimetry in the disaster areas of Jiangyou City. 方法直接采集灾区现场水样用余氯比色仪对江油市灾区内集中式供水和分散式供水的基本情况进行了调查。
Feature matching, which aimed at finding corresponding features in different images of the same scene, is a basic work in computer vision. 特征匹配是计算机视觉中的基本工作,旨在找到同一场景的不同图像中对应的特征。
3D surface generation module implements the 3D terrain surface data, including TIN and Raster, and the data that would be used to generate 3D scene is the main basic data for 3D scene browsing and setting module and 3D terrain analysis module to performing their functions. 三维地表生成模块实现了生成三维地形表面的功能,包括TIN数据和Raster数据,用于生成三维场景,是三维场景浏览及设置模块和三维地形分析模块中各功能操作的主要数据基础。