thias, 1 month ago to retrocomputing

Writing a QuickDraw decoder gave me some ideas on how to generate compact Pict images. This could be useful when small programs are desirable, like when they are stored in a ROM chip. #retrocomputing #classicmac #classicmacos #quickdraw #quicktime #imageprocessing https://wiesmann.codiferes.net/wordpress/archives/37513

thias, 2 months ago to VintageOSes

This evening, I added support for the SGI image format embedded inside QuickTime containers to my QuickDraw viewer. Turns out SGI images have a 512 byte headers which QuickTime strips, as the data is redundant with what is stored by QuickTime. So before rendering, the full SGI file needs to be reconstructed.

https://github.com/wiesmann/QuickDrawViewer

#quickdraw #quicktime #classicmac #imageprocessing #sgi

thias, 5 months ago to VintageOSes

Small moment of pride, I finally managed to write Swift code that decodes QuickDraw regions. The current code is super inefficient, but works.
I found a test image that uses non square regions instead of bitmaps, you can see the difference in rendering between my code and the Preview Application of Mac OS X.

#quickdraw #macosx #computergraphics #classicmac

Rendering by Mac OS X's preview

paulrickards, 10 months ago to python

Remember Google's Quick, Draw! where you scribble a picture of a given word?

The Line-Us plotter has a nervous, shaky-line quality that pairs nicely with these doodles.

Here's the robot drawing six penguins.

https://youtube.com/shorts/kJjFfd5mFZI

#PenPlotter #QuickDraw #Python