Cumincad : CUMINCAD Papers : Paper cf13:Electronic Culture: Technology and Visual Representation

authors	Druckrey, T. (ed.)
year	1996
title	Electronic Culture: Technology and Visual Representation
source	Aperture, New York
summary	The ability to specify nonplanar 3D curves is of fundamental importance in 3D modeling and animation systems. Effective techniques for specifying such curves using 2D input devices are desirable, but existing methods typically require the user to edit the curve from several viewpoints. We present a novel method for specifying 3D curves with 2D input from a single viewpoint. The user rst draws the curve as it appears from the current viewpoint, and then draws its shadow on the oor plane. The system correlates the curve with its shadow to compute the curve's 3D shape. This method is more natural than existing methods in that it leverages skills that many artists and designers have developed from work with pencil and paper.
series	other
references	Content-type: text/plain
last changed	2003/04/23 15:14