基于Raphael态势标绘的研究与实现
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摘要
提出了基于Raphael图形包的矢量图形绘制技术,利用贝塞尔曲线函数实现箭头类态势符号绘制的算法,在B/S环境下实现了态势符号的矢量图形绘制。通过Raphael提供的绘制样式和渲染样式对绘制的箭头进行渲染展示,并通过移动变换和旋转变换实现了对箭头类符号的编辑,很好地实现了人机交互体验。最后本文以公安部PGIS地图作为地图引擎,构建了满足实战化需求的预案态势标绘系统,对态势标绘的推广应用具有参考作用。
In this paper,a technology about redering vector graphics based on Raphael is proposed,which achieving the redering vector graphics of situation plotting in B/S environment with the algorithm of using Bézier curve function to realize the drawing of the arrows and achieve the redering of the single arrow and double arrow symbol through the calculation of control points. Through the rendering style and display style of Raphael,and through the transformation and rotation transform,the editing of the arrow symbol and a good human-computer interaction experience are realized. Finally,the paper takes the PGIS map of the Ministry of Public Security as the map engine,and builds up a plan situation plotting system to meet the requirements of actual combat,which has a reference function to popularize and apply the situation plotting.
In this paper,a technology about redering vector graphics based on Raphael is proposed,which achieving the redering vector graphics of situation plotting in B/S environment with the algorithm of using Bézier curve function to realize the drawing of the arrows and achieve the redering of the single arrow and double arrow symbol through the calculation of control points. Through the rendering style and display style of Raphael,and through the transformation and rotation transform,the editing of the arrow symbol and a good human-computer interaction experience are realized. Finally,the paper takes the PGIS map of the Ministry of Public Security as the map engine,and builds up a plan situation plotting system to meet the requirements of actual combat,which has a reference function to popularize and apply the situation plotting.
引文
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[2]姜芸,闫利,王军.基于中点约束算法的态势标绘研究[J].测绘工程,2013,22(2):10-13.
[3]刘会刚,秦国亮.一种基于Bezier曲线的军事箭标实现[J].四川兵工学报,2009,30(2):67-68.
[4]刘丹,李刚,田银枝,等.利用VML和SVG绘制军标箭头符号的算法实现[J].测绘科学,2014,39(4):115-119.
[5]张欣,张立立,曹国峰,等.战场态势推演GIS动态表达技术与应用[J].地球信息科学,2006(4):80-83.
[6]徐敬海,徐徐,聂高众,等.基于GIS的地震应急态势标绘技术研究[J].武汉大学学报:信息科学版,2011,36(1):66-70.
[7]程朋根,龚健雅,眭海刚.GIS中地图符号设计系统的设计与实现[J].中国图象图形学报,2000,5(12):1 006-1 011.
[8]王艳东,邬皛,龚健雅.GIS中态势符号的建模与应用[J].测绘信息与工程,2006,31(2):4-6.
[9]肖燕萍,周鹏.SVG技术在网络地图数据组织及WebGIS中的应用[J].测绘通报,2005(9):108-111.