A prototypic presentation engine for MCF

This thesis describes a prototypic implementation of a presentation system for the multimedia design tool Media Construction Formalism (MCF).The prototypic sys- tem has two main components, a textual XMl-based representation of the visual constructs of MCF, knorvn as MCFN4L, together with a transla,tor which is capabìe of translating the MCFML into SN4IL plus Jscript code.The SMIL plus Jscript code produced is exported to an external SMIL player, Internet Explorer (IE) for rendering.Current XML technologies and publicly available XML processing tools were used to implement the prototypic presentation system.The problem of mapping the MCF visual constructs to the XML description was addressed by expressing the generic constructs of the MCF language as XML schema definition; the result is referred to as MCF-XML schema.This MCF-X\4L schema provided the structure and syntax to author MCFML documents.In this thesis the similarity in the expressive power of the visual formalism to that of the VICF-XN4L schema definition has been illustrated by authoring various multimedia artifacts (MCF author's version of the animation game (ballgame) and Interactive multimedia presentation) in MCFML.The major contribution of this work is the development of the generic XSLT style sheet which carries out the transformation of N4CFN4L documents to SMIL plus Jscript code.The Microsofts .Net fiamework was used for implementing the style sheets as well as the XSLT processor.As far as I am aware with an extensive literature review, this work is first to generate realistic SMIL-based rendering for a multimedia design tool.This signifies that no design tools (which have their rendering engines in their prototypic form) have prototyped their designs as realistically as achieved through my work.However, this realistic rendering of the MCF designs was achieved at the expense t1 4.3 User-Interface Describing MCF boxes which exhibit composite behaviour, PopUpandDown I22 6.1 Design of Interactive Multimedia Presentation in the MCF Visual For- malism The BallGame is produced by the rendering of the SMIL/JScript code by the Internet explorer as shown in figure 3.1 The Multimedia Presentation is produced by the rendering of the SMIL/JScript code by the Internet explorer as shorvn in figure 3.1 The Zooming effect is produced by the rendering of the SMIL/JScript code by the Internet explorer as shown in figure 3-1 i40 225 8.1 8.2 8.3 compared to all the current multimedia design tools which have their presen- tation engines produce prototypes in the form of design sketches which is not reaÌistic and demand further prototyping by the multimedia designers.1.6 Organization The remainder of this thesis is organized as follows.Chapter 2 discusses a brief background on the MCF system, SMIL, and various XN4L technologies and processing tools.Chapter 3 and Chapter 4 explain the solution strategy that I have adopted in developing the prototypic presentation engine.Chapter 5 discusses related work done previously in this area.In Chapter 6 I have provided a detailed discussion to the designers of MCF my experience in working with the MCF formalism.Finally, Chapter 7 concludes the thesis and discusses directions for future research.

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