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真实感图形显示是计算机图形学的重要研究方向之一，在实际的工程应用中，提高几何形体显示质量，以增强人机交互性，同样也是 Ｃ Ａ Ｄ／ Ｃ Ａ Ｍ 软件追求的重要目标之一。 Ｏｐｅｎ Ｇ Ｌ 图形库是由 Ｓ Ｇ Ｉ公司开发的高质量的三维真实感图形开发工具，而工程中广为应用的 Ｓ Ｔ Ｌ 格式文件使用三角形面片来表示三维实体模型；基于对 Ｏｐｅｎ Ｇ Ｌ 以及 Ｓ Ｔ Ｌ 的研究，提出了使用几 何形体模型数据实现真实 感图形显示的总体思路，并给出了基于 Ｏｐｅｎ Ｇ Ｌ 的 Ｓ Ｔ Ｌ 格式实体的真实 感显示的具体方法及实现 步骤， 依此设计生成了一个相应的显示工具，其显示效果甚佳、渲染速度很快且操作 简单灵活。鉴 于 Ｏｐｅｎ Ｇ Ｌ 和 Ｓ Ｔ Ｌ 均为所在领域的工业标准之一，该图形显示工具具有一定的实用价值和应用前景
Photorealistic graphics display is one of the important research directions in computer graphics. In actual engineering applications, improving the quality of geometric display to enhance human-computer interaction is also an important goal pursued by CAD / CAM software one. The OpenGL Graphics Library is a high-quality 3D realistic graphics development tool developed by SGI, and the widely used STI format file in the project uses triangular polygons to represent 3D solid models. Based on the OpenGL And S T L, the general idea of using the geometric model data to present the realistic graphical display is put forward. The concrete methods and implementation steps of the realistic display of the S T L format based on Open G L are given The design generated a corresponding display tool that showed great results, was fast to render and easy to use and flexible. Given that Open G L and S T L are among the industry standards in their area, the graphical display tools have some practical value and promise