This is tcl.gd, a new Tcl interface to the GD drawing library that is nearly 100% feature complete with GD, far more complete with gd 2 than Gdtclft.
After package requiring the tclgd package, you use the GD command with a suboption to create an image object. You can create an indexed or truecolor image, either starting with an empty one or loading one from a JPEG, PNG, GIF, WBMP, XBM, XPM, GD or GD2 native formats, depending on build options.
This create a new command object that you use to manipulate and save your image. You can draw pixels, lines, polygons, rectangles, arcs, and ellipses. You can emit text styled with truetype fonts. You can fill, manage colors, anti-alias, resize, resample, rotate, and merge images, and you can save images as JPEG, GIF, animated GIF, PNG8, PNG24, etc.
It's complete, solid, and fast.UNIX manual page as a PDF is available at https://github.com/flightaware/tcl.gd/raw/master/doc/tclgd.pdf
Get it on github: http://github.com/flightaware/tcl.gd
You can sometimes find tcl.gd on IRC in the #tcl channel on the Freenode network
or you can file issues with github here.
You can also clone the project with Git by running:
$ git clone git://github.com/flightaware/tcl.gd
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