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1、SeriesofSelectedPapersfromChun-ThsungScholars,PekingUniversity(2001)AnIn-depthAnalysisofScalableVectorGraphics计算机科学技术系98级任品Abstract:Anewtwo-dimensionalvectorgraphicsstandardnamedScalableVectorGraphics(SVG)[1]isemerging.ItisbasedontheXMLandvectorgraphicstechnologyan
2、ddevelopedbytheW3Corganizationandothermajorindustryplayers.Itpromisestobringthefastandrich-contentgraphicstothewebwhileovercomingtheshortcomingsoftraditionalrastergraphics.SVGintroducesalotofexcitingfeaturestothewebgraphicsworld,andcanbeseamlesslyintegratedintoothe
3、rexistingwebtechnologies.Thispaperwillgiveanin-depthanalysistothisnewgraphicsstandard,focusingonitsfeatures,industrialimplementationstatus,therelatedresearchfieldsandthefuturework.Atlastweuseademotodemonstratethediscussedfeatures.Keywords:SVG,XML,graphicsstandard,v
4、ectorgraphics,web-basedgraphics摘要：SVG（ScalableVectorGraphics）是一种新的二维矢量图形标准，它基于XML技术，由W3C组织负责开发制订。SVG能给网络应用带来快速高效，效果丰富的图形，同时克服了传统光栅图形的不足。SVG给网络图形应用领域引入了很多新的技术特性，还可以和其他现存的网络技术无缝集成应用。本文将重点分析SVG的技术特性，相关的关键应用实现和研究进展，并提出自己的观点，最后展示一个作者实现的SVG的应用实例。关键词：SVG，XML，图形标准，矢量图形，网络图
5、形1IntroductiontotheScalableVectorGraphicsOneoftheultimategoalsforwebtechnologiesistobeabletoprovidethewebuserswithaclearandeffectivecommunicationenvironment.Toachievethisgoal,fast,scalableandrich-contentgraphicsisindispensable.However,thetraditionalrastergraphicssu
6、chasGIFandJPEGcanonlymeetsomeofthecriteria.Theyarebig,slow,andresolution-fixed.SVGisdesignedtoimprovethissituation.Withthisnewgraphicsformat,thecomplexgraphicslayouts,sophisticatedgeometricobjects,resolution-scalableartworksandhighlyinteractiveanimationswithareason
7、ablesmallfilesizeareallpossibleforthewebpagesandotherapplications.TheSVGformatisbasedontheXML[2]technology.XMListheuniversalformatforstructureddocumentsanddataontheWebandregardedasthekeyto365SeriesofSelectedPapersfromChun-ThsungScholars,PekingUniversity(2001)thenex
8、tgenerationWeb.SVGusestheXMLgrammartodefinethescalablevector-based2DgraphicsandcanbeusedasaXMLNamespace[3]intheweb,thereforeitisabletocooperateea
