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在数字化技术应用于水利水电工程的大背景下,为在某升船机塔柱结构某升船机数字化升级项目中实现智慧化模拟,完善可视化和数据交互能力,研发一个结构仿真可视化平台。平台采用WebGL技术,在网页端对有限元网格模型进行重绘;提供云图及变形动画渲染功能用于展示前、后处理数据;研究有限元数据处理、模型面片和云图渲染优化技术,用于高效渲染。平台在某升船机数字化项目中得到了良好应用,可视化功能可用于常用结构分析,并基于平台接口开发监测对比功能,提高运行管理单位对结构安全的分析水平。相关技术可用于其他水利水电工程结构的仿真可视化平台当中。 相似文献
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随着5G网络服务的商用,对网络带宽要求高的虚拟现实应用迎来快速发展期.用户访问虚拟现实应用通常需要专门的虚拟设备或安装手机应用软件,而使用万维网虚拟现实技术,用户访问网页链接就可以体验到虚拟现实应用,极大地降低了虚拟现实应用的使用门槛.基于高拓展、高兼容、低开发成本、高性能且免费的万维网虚拟现实开发框架技术,结合学校教... 相似文献
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BIM模型在Web前端的渲染问题是BIM技术在实际应用中的重要问题,利用三角面片来加快模型前端渲染效率(模型轻量化)是该问题的解决方案。根据Revit二次开发技术中BIM模型的三角面片网格平均质量系数较低的问题,针对BIM模型轻量化和基于Web端共享的应用需求,提出结合Revit二次开发和Delaunary剖分算法的改进算法。通过在Revit二次开发得到的BIM模型原始点上增加点,使得原始点与增加的点按照B-W算法符合Delaunay准则,生成更为精细的三角面片,同时避免了域外三角形的产生,改进了算法实际应用效果。实验结果表明改进算法得到的三角面片的网格平均质量系数和网格关联质量系数相较于原始算法均有提高。最后设计利用WebGL将BIM模型按照优化算法生成的三角面片的方式进行渲染,实现BIM模型在Web端的渲染,验证该方法的有效性。 相似文献
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VWorld is run by the Ministry of Land, Infrastructure, and Transport of South Korea and provides national spatial information, such as aerial images, digital elevation models, and 3D structural models. We propose herein an open platform for 3D spatial information based on WebGL using spatial information from VWorld. WebGL is a web‐based graphics library and has the advantage of being compatible with various web browsers. Our open platform is also compatible with various web browsers. Accordingly, it is easily accessible via the VWorld site and uses the three‐dimensional (3D) map program. In this study, we describe the proposed platform configuration, and the requests, management, and visualization approaches for VWorld spatial information data. Our aim is to establish an approach that will provide a stable rendering speed even on a low‐end personal computer without a graphics processing unit based on a quadtree structure. We expect that users will be able to visualize 3D spatial information through the VWorld open platform, and that the proposed platform will become the basis for various applications. 相似文献
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Thanks to the spread of the Internet, opportunities to use online bookstores have been increasing in recent years. However, it is difficult for the typical customer to intuitively grasp which book sells well or which book is recommended by the shop. We have therefore developed a display system for virtual bookstores in which an image of books arranged in a bookshelf or stacked on a table is reproduced by using WebGL. Since the amount of book stock that is managed by the server side needs to be changed as orders come in from clients, we introduce a server side technology using a hypertext preprocessor (PHP). 相似文献