虚幻引擎中多源地理数据坐标整合研究与应用

Research and application of coordinate integration of multi⁃source geographic data in Unreal Engine

虚幻引擎作为一个功能强大的3D创造平台在游戏开发领域备受青睐,因其具有优秀的可视化效果和强大的交互能力,逐渐被三维地理场景构建所应用。本文针对虚幻引擎加载多源地理数据存在的坐标不统一问题,对多源数据的坐标轴差异、地物形变、数据参考面不统一和数据精度不够等问题进行了分析,并结合虚幻引擎编辑器功能、数学变换、坐标转换以及坐标值拆分等方式提出了相应的解决方法。应用实践表明本研究对解决虚幻引擎加载多源地理数据时存在的坐标不统一问题具有明显的效果。

As a powerful 3D creation platform,Unreal Engine4 is favored in the field of game development.Because of its excellent visualization effect and strong interaction ability,it has been gradually applied in three geographic scene construction.This paper discussed the problem of coordinate inconsistency when the virtual engine loads multi⁃source geographic data.Coordinate axis difference of multi⁃source data,ground feature deformation,inconsistent data reference plane,and insufficient data accuracy were analyzed.Corresponding solutions were proposed by combining the functions of virtual engine editor,mathematical transformation,coordinate transformation and coordinate value splitting.The application practice showed that obvious effect on solving the problem of coordinate inconsistency when the virtual engine loads multi⁃source geographic data were abtained.