| 基于SVG的电子海图复杂矢量符号绘制方法 |
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| 引用本文： | 马德涛,王锐,黄毅.基于SVG的电子海图复杂矢量符号绘制方法[J].海洋测绘,2017(5):71-75. |
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| 作者姓名： | 马德涛 王锐 黄毅 |
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| 作者单位： | ;1.海军出版社;2.海军参谋部航海保证局 |
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| 摘 要： | 为有效解决可缩放矢量图形(SVG)中部分海图复杂矢量线、面符号无法绘制的瓶颈问题,在分析电子海图复杂矢量线、面符号结构的基础上,提出了相应的绘制方法,并对具体的处理方法与步骤进行了讨论,设计了关键算法,给予了代码实现,对算法进行了有效的验证。实验表明,所提算法具有较好的通用性和实用性,绘制效率高,弥补了SVG中海图符号表达的短板,为基于SVG的海图符号库建设和后续的网络化电子海图显示与应用研究奠定了技术基础。
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| 关 键 词： | 可缩放矢量图形 电子海图 海图符号 图元 循环绘制 基本重复单元 |
Methods of Drawing Complex Vector Symbols for Electronic Chart Based on SVG Technique |
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| MA Detao,WANG Rui,HUANG Yi.Methods of Drawing Complex Vector Symbols for Electronic Chart Based on SVG Technique[J].Hydrographic Surveying and Charting,2017(5):71-75. |
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| Authors: | MA Detao WANG Rui HUANG Yi |
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| Institution: | Navy Press,Tianjin 300450 ,China; Navigation Guarantee Bureau of the Naval Staff Department,Beijing 100841 ,China |
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| Abstract: | In order to effectively solve the choke point in the course of drawing the part complex vector chart map symbols based on SVG,the paper puts forward drawing methods on the basis of analyzing the structure of line and area symbols.Then the paper researches on the detailed processing steps and designs key arithmetics of complex vector line and area chart map symbol which are very common and useful.The arithmetics sovle the restricted problems about the visualization of chart symbol based on SVG and lay a foundation for the construction of chart symbol library and furture display and applications of chart map based on SVG. |
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