Hidden contours on a frame-buffer
Hidden contours on a frame-buffer
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DOI：
10.2312/eggh/eggh92/188-203
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发表时间：
1992-09
期刊：
影响因子：
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通讯作者：
J. Rossignac;M. V. Emmerik
中科院分区：
文献类型：
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作者：
J. Rossignac;M. V. Emmerik
为了符合绘图实践，并且由于着色图像并不总是揭示 3D 模型的内部或隐藏结构，因此设计人员需要具有隐藏虚线并删除非轮廓镶嵌边缘的线框图像。用于多面体线框渲染的软件技术需要对相交和轮廓（即轮廓）边缘的可见部分进行视点相关的识别，对于交互式应用程序来说太慢了。现代图形管道中的硬件支持不可用或最多仅限于轮廓边缘的识别。在本文中，提出了用于隐藏线去除和轮廓边缘确定的新硬件辅助技术。这些技术不需要任何面/边邻接信息，并且可以在支持硬件 z 缓冲区的任何平台上轻松实现。
To comply with drafting practices and because shaded images do not always reveal the internal or hidden structures of 3D models, designers need wireframe images with hidden lines dashed and nonconlour tesselation edges removed. Software techniques for wireframe rendering of polyhedra that require the viewpoint-dependent identilication of the visible portions of intersection and contour (i.e. silhouette) edges are too slow for interactive applications. Hardware support in contemporary graphics pipelines is unavailable or at best limited to the identification of contour edges. In this paper, new hardware assisted techniques for hidden-line removal and determination of contour edges are presented. The techniques do not require any face/edge adjacency information and can be implemented easily on any platform that supports a hardware z-buffer.