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Gain insights on creating and modifying 3D shapes in Maya, including curve and surface techniques, duplication methods, editing controls, and deformer tools. Explore key concepts like Scene Graph, Transformations, and History. Don't miss out on critical summaries and upcoming assignment details. Stay informed and enhance your design skills!
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Design Realization lecture 3 John Canny 9/2/03
Reminder • Class home page iswww.cs.berkeley.edu/~jfc/DR/F03 • Class swiki (password needed) is up atkettle.cs.berkeley.edu/DesignRealization2please submit summaries there by tonight. • Maya CD still coming (no mail since Friday). Assignment going out Thursday.
Last Time • Some qualities of 3D shapes. • Creating shapes from curves. Tangents, knots and control points. Curve continuity. • Creating surfaces from curves: rotating, lofting, skinning, extruding (contd.)
Curve creation • Curves are created in 3 main ways in Maya: • Pencil tool (from pen or mouse input). • EP curve, specifying end and via points. • CV curve tool, from “create” menu. • Curve editing can be done by: • Editing the control points (a CV curve). • Editing a curve point position and tangent:uses the curve editing tool.
Curve editing • The “edit curves” menu provides more operations: • Close an open curve. • Join two curves. • Cut a curve.
Duplication • There are two ways to duplicate: • Copying: makes a new copy of the object that is separately editable. • Instancing: uses the same geometry with a transform. • Instancing is very useful for making global changes to a model. • It’s the basis of the rotate tool, and can be used in lofting.
3D shape creation • 3D shapes can be created by: • Rotating a curve. • “Lofting” several curves. • “Planar” skins joining curves in the same plane. • Extrusion. • + several other more specialized methods.
3D shape editing • Manipulating control points (and sets of them). • Manipulating Faces. • Using deformers (later). A deformer allows deformation of many control vertices at once: • Twists, bends, flares, etc. • Wraps: deformation near a surface. • Wires: deformation near a curve.
Concepts • Scene Graph • Transformations • History
Reminder • Critical summaries of last weeks readings due today. • Maya CD will be available Thursday.