Various pure Tcl and Tcl C-extensions written at FlightAware and released as open source, including

tclgd

The GD graphics drawing library is a software library that programmers use to draw, paint, create graphs and tables, resize images, draw text and add watermarks, and so forth.

Moved to github tclgd project

1-May-09 - Version 1.0 released!

tclgd tcl.gd] aka tclgd is a Tcl C extension that brings nearly 100% of GD's capabilities to Tcl programmers. Tcl coders can use GD to read and write GIFs, JPEGs, PNGs, and native GD images. From Tcl you can draw pixels, lines, polygons, rectangles, arcs, and ellipses. You can do fills, create text, resize, resample, rotate, sharpen, compare and merge images, and create animated GIFs, all following a familiar Tk-style object model.

tclspline

tclspline - generate a set of quadratic splines based on an input list

Moved to github tclspline project

spline reads a list and generates a new list of x and y coordinate pairs representing a curve based on the passed points, rendered as a set of quadratic splines: one spline is drawn for the first and second line segments, one for the second and third, and so on.

tcllauncher

tcllauncher, a package for writing Tcl apps that look and run like native C apps.

Moved to github tcllauncher project

tclbsd

tclbsd, a Tcl interface to a bunch of system calls in Berkeley UNIX (that are probably available in other Linuxes and UNIXes as well).

Moved to github tclbsd project