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Behavioral Reactivity and Real Time Programming in XML

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within the familiar XML programming style. In order to provide this. added functionality we propose two extensions both inspired by ...

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Behavioral Reactivity and Real Time Programming in XMLPage 1Behavioral Reactivity and Real Time Programming in XMLFunctional Programming meets SMIL AnimationPeter KingDepartment of Computer ScienceUniversity of ManitobaWinnipeg MB Canadaprking@cs.UManitoba.caPatrick SchmitzLudicrum EnterprisesSan Francisco CA USAcogit@ludicrum.orgSimon ThompsonComputing LaboratoryUniversity of KentCanterbury Kent UKS.J.Thompson@kent.ac.ukABSTRACTXML and its associated languages are emerging as powerfulauthoring tools for multimedia and hypermedia web content.Furthermore intelligent presentation generation engines have begun to appear as have models and platforms for adaptive presentations. However XMLbased models are limited by their lack ofexpressiveness in presentation and animation. As a result authors of dynamic adaptive web content must often use considerableamounts of script or code. The use of such script or code has two serious drawbacks. First such code undermines the declarative description possible in the original presentation language andsecond the scripting/coding approach does not readily lend itself to authoring by nonprogrammers. In this paper we describe a set of XML language extensions inspired by features from the functional programming world which are designed to widen the class of reactive systems which could be described in languages such as SMIL. The described features extend the power of declarative modeling for the web by allowing the introduction of web media items which may dynamically react to continuously varying inputs both in a continuous way and by triggering discrete userdefined events. The two extensions described herein are discussed in the context of SMIL Animation and SVG but could be applied to many XMLbased languages.Categories and Subject DescriptorsH.5.1 Information Interfaces and Presentation]: Multimedia Information Systems Animations I.3.6 Computer Graphics]: Methodology ...

Source: www.ludicrum.org

 

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