DocumentCode
935566
Title
Constraint-based curve manipulation
Author
Fowler, Barry ; Bartels, Richard
Author_Institution
Pacific Data Images, Sunnyvale, CA, USA
Volume
13
Issue
5
fYear
1993
Firstpage
43
Lastpage
49
Abstract
Alternative techniques for control-vertex manipulation of parametric curves are described. Their generality and flexibility make possible a wide range of curve-editing interfaces based on direct manipulation. A method for applying systems of constraints at one or more arbitrary points on a single or composite curve and an efficient technique for the interactive application of these systems are outlined. Analytic solutions and examples for useful systems of constraints are presented.<>
Keywords
computational geometry; computer graphics; curve fitting; composite curve; constraint-based curve manipulation; control-vertex manipulation; curve-editing interfaces; direct manipulation; interactive application; parametric curves; Control systems; Equations; Graphics; Shape control; Solid modeling;
fLanguage
English
Journal_Title
Computer Graphics and Applications, IEEE
Publisher
ieee
ISSN
0272-1716
Type
jour
DOI
10.1109/38.232098
Filename
232098
Link To Document