Bézier Curves are used for smoothed line and polygons inside the Canvas; as TkPath path segments; as TkZinc 3.3.4 curve segments.
Bézier Curves are characterised by knots and control points. The Bézier control points are off the resulting curve.
Resolution measurement for printers.
A monochrome vector graphic symbol. Usually constructed from splines or bezier-curves.
Glyphs are the character definitions inside a font.
Interpolating Splines.
The control points of a Lagrande Curve are aligned on the resulting curve.
See also: Spiro, Hermite, B-Splines, NURBS and clothoid.
Resolution measurements for Displays.
2D Vector Graphics Drawing System based on a XML-Schemata.
SVG is rather a visualization system than a vector graphics drawing system. It features: filters, animations, hierarchies, transformations and viewports.
General term denoting approximating curves such as Bézier curves and interpolating curves such as Lagrande.
In »tclsplines« and Tk Canvas a two way interpolation and approximation approach is being used to smooth lines. First a interpolated curve is calculated with n predefined steps. The interpolated points are then smoothed using Bézier curve segments.
The Tk Documentation terms this »parabolic splines«. Most likely B-Splines.
Visit the following web sites on splines: Wikipedia, ibiblio.org, cse.unsw.edu.au, cs.nps.navy.mil and terpconnect.umd.edu.
Pronounced »tickel«.
Tcl is a simplistic, yet powerful language, which features list and strings as data types.
Widely used Graphical User Interface Toolkit. Originally fashioned after the Motif Toolkit under X Window System.
Tk can be used with: Lisp, Ruby, Python, Perl, C, Tcl, Erlang, Limbo, Ada, Cobol...
Tk is the Graphical User Interface of the Inferno Operating System.
A predominantly rectangular shape inside a Graphical User Interface. In general actions or event handlers are associated with it.
»button«, is an example for a window. The class is »Button« and each instance of a button may have a »-command« attribute.
See Window.
Copyright © 2009–2010 Arndt Roger Schneider