| 实现复杂态势符号在3维场景中的绘制 |
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| 引用本文： | 于美娇,张永生,杨靖宇,戴晨光,纪松.实现复杂态势符号在3维场景中的绘制[J].测绘与空间地理信息,2008,31(6). |
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| 作者姓名： | 于美娇 张永生 杨靖宇 戴晨光 纪松 |
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| 作者单位： | 1. 信息工程大学,测绘学院,河南,郑州,450052;72515部队,山东,济南,250014
2. 信息工程大学,测绘学院,河南,郑州,450052 |
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| 摘 要： | 通过分析态势符号的表达方式和特点,提出了一种基于模板阴影体技术的实时绘制复杂态势符号的方法,来实现在3维场景中的高质量叠加显示态势符号,达到随地形起伏的目的.实验证明,该方法能够用于在3维场景中绘制复杂态势符号,并且在系统项目中取得很好效果,使绘制出的态势符号能够随地形起伏.
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| 关 键 词： | 态势符号 模板测试 阴影体 矢量数据多面体 矢量数据绘制 |
The Implement of Rendering Situation Symbol over 3D Terrain |
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| YU Mei-jiao,ZHANG Yong-sheng,YANG Jing-yu,DAI Chen-guang,JI Song.The Implement of Rendering Situation Symbol over 3D Terrain[J].Geomatics & Spatial Information Technology,2008,31(6). |
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| Authors: | YU Mei-jiao ZHANG Yong-sheng YANG Jing-yu DAI Chen-guang JI Song |
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| Institution: | 1.Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China;2.72946 Troops;Zibo 255014;China |
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| Abstract: | In this paper,we analyzed the representation mode and character of situation symbol,presented a new rendering method of complex situation symbol over 3D terrain based on the stencil shadow volume technique,and realized the objective of displaying according to terrain.Experiment has proved that the method can be used to render complex situation symbol over 3D terrain,acquire good effect in system.The rendered situation symbol can be displayed according to terrain. |
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| Keywords: | situation symbol stencil test shadow vector polyhedron vector data render |
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