Title :
Representing Interwoven Surfaces in 2-1/2D Drawings
Author :
Wiley, Keith ; Williams, Lance R.
Author_Institution :
Univ. of New Mexico, Albuquerque
Abstract :
Drawing programs must be able to distinguish which surface is on top anywhere that two surfaces overlap. Existing drawing programs do this by assigning surfaces to distinct layers, so they can´t represent interwoven sets of surfaces. Druid uses a more general representation by maintaining local depth ordering of segments of a drawing´s surface boundaries rather than a global depth relation between entire surfaces.
Keywords :
equivalence classes; rendering (computer graphics); solid modelling; 2-frac12D drawings; Druid drawing program; drawing surface boundary; equivalence class; interwoven surface representation; local depth ordering; overlapping surfaces; rendering; Computer graphics; Human factors; Layout; Organizing; Shape; Spline; User interfaces; computer aided design; interwoven surfaces; Algorithms; Artificial Intelligence; Computer Graphics; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Information Storage and Retrieval; Numerical Analysis, Computer-Assisted; Pattern Recognition, Automated; Signal Processing, Computer-Assisted;
Journal_Title :
Computer Graphics and Applications, IEEE
DOI :
10.1109/MCG.2007.88
