| 三维地形仿真中矢量数据的精确高效绘制方法研究 |
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| 引用本文： | 盖素丽,王娜. 三维地形仿真中矢量数据的精确高效绘制方法研究[J]. 河北省科学院学报, 2008, 25(3): 20-23,53 |
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| 作者姓名： | 盖素丽 王娜 |
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| 作者单位： | 河北省应用数学研究所,河北,石家庄,050081;河北工业大学计算机科学与软件学院,天津,300130;河北省科学院,河北,石家庄,050081 |
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| 摘 要： | 提出了一种基于模板阴影体算法的矢量数据绘制方法,实现了矢量数据在三维场景中的高质量实时叠加显示.并对其中的关键技术进行了详细论述,最后通过实验验证了该方法的有效性.该方法基于屏幕空间,具有像素级的绘制精度;而且不受地形几何数据的约束,其执行效率与地形数据的复杂度无关,仅取决于矢量数据本身的复杂度.
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| 关 键 词： | 模板测试 阴影体 矢量数据多面体 矢量数据绘制 |
Rendering vector data over 3D terrain based on stencil shadow volume |
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| GE Su-li,WANG Na. Rendering vector data over 3D terrain based on stencil shadow volume[J]. Journal of The Hebei Academy of Sciences, 2008, 25(3): 20-23,53 |
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| Authors: | GE Su-li WANG Na |
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| Affiliation: | 1.Hebei Institute of Applied Mathematics;Shijiazhuang Hebei 050081;China;2.Hebei University of Technology;Tianjin 300130;3.Hebei Academy of Sciences;China |
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| Abstract: | A method of rendering vector data over 3D terrain,which is based on the stencil shadow volume algorithm has been presented.The high-quality real-time overlay of vector data on virtual landscapes has been realized.Since this method is a screen-space algorithm,it is per-pixel exact and does not suffer from aliasing artifacts like texture-based techniques.In addition,the method is independent of the underlying terrain geometry,its performance does not depend on the complexity of the datasets,but only on the co... |
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| Keywords: | Stencil test Shadow Vector polyhedron Vector data render |
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