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Creating Virtual Worlds by Freehand Drawing



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Sketch That Scene For Me Creating Virtual Worlds by Freehand Drawing Ellen Yi Luen Do In eCAADe 2000 Promise and Reality proceedings of the 18th conference on Education in Computer Aided Architectural Design in Europe June 22 24 2000 pp265 268 design machine group University of Washington Seattle WA USA 98195 5720 http depts washington edu dmachine Sketch that Scene for Me Creating Virtual Worlds by Freehand Drawing Ellen Yi Luen Do Design Machine Group Department of Architecture Box 355720 University of Washington Seattle WA 98195 5720 ellendo u washington edu Introduction With the Web people can now view virtual three dimensional worlds and explore virtual space Increasingly novice users are interested in creating 3D Web sites Virtual Reality Modeling Language gained ISO status in 1997 although it is being supplanted by the compatible Java3D API 1 and alternative 3D Web technologies compete 2 Viewing VRML scenes is relatively straightforward on most hardware platforms and browsers but currently there are only two ways to create 3D virtual scenes One is to code the scene directly using VRML The other is to use existing CAD and modeling software and save the world in VRML format or convert to VRML from some other format Both methods are time consuming cumbersome and have steep learning curves Pen based user interfaces on the other hand are for many an easy and intuitive method for graphics input Not only are people familiar with the look and feel of paper and pencil novice users also find it less intimidating to draw what they want where they want it instead of using a complicated tool palette and pull down menus Architects and designers use sketches as a primary tool to generate design ideas and to explore alternatives and numerous computer based interfaces have played on the concept of sketch However we restrict the notion of sketch to freehand drawing which we believe helps people to think to envision and to recognize properties of the objects with which they are



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