| 摘 要: 随着网页技术的快速发展，在网页上能够创建更多的复杂页面。本文使用WebGL技术构建虚拟三维场景，在三维场景中加载渲染中间格式的三维模型，实现三维模型在网页环境下的可视化展示；并使用射线相交法、几何变换、相机投影，运用计算机图形学相关知识，实现模型的交互，主要表现为鼠标点选模型，模型的旋转、缩放、平移，通过鼠标手势改变相机的位置和姿态，实现了虚拟场景的漫游，从不同角度对模型进行观察。通过以上研究，构建了一个具有良好交互性的沉浸式场景漫游系统。 |
| 关键词: WebGL；模型交互；可视化；三维场景；漫游 |
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中图分类号: TP399
文献标识码: A
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| Research on Virtual Scene Roaming without Plug-in in Web Environment |
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GUO Wenwen, ZHONG Liangwei
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( School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)
gwwusst0420@163.com; zlvcad@126.com
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| Abstract: With rapid development of web technology, more complex pages can be created on the web. This paper proposes to use WebGL (Web Graphics Library) technology to construct virtual 3D scenes, at which intermediate format 3D models are loaded and rendered to realize visual display of 3D models in web environment. Ray intersection, geometric transformation, camera projection, and related knowledge of computer graphics are used to realize interaction of the model, which is mainly manifested as mouse click on the model, the model's rotation, zoom, and translation. Mouse gestures can change position and posture of the camera to realize roaming of the virtual scene, and observe the model from different angles. Through the above research, an immersive scene roaming system with good interaction is constructed. |
| Keywords: WebGL; model interaction; visualization; three-dimensional scene; roaming |
