Transform 2D coordinates with an Apple IIGS. Make pretty pictures?
I'll add a disk image and a binary version once I get it to stop crashing the system on exit. As it is, here's the source code for my little square rotation program in Merlin 16 format.
To compile, at the Merlin prompt type: LOAD BUILD
This loads the assemble-and-link script. Execute by pressing Apple+O and typing LINK BUILD
You'll see assembler and linker output go by. In 20-30 seconds, you'll have an executable named GRAF and be dumped back to the Merlin prompt. To run the application, type =GRAF
The square will spin forever. Click the mouse to exit the application. If you're lucky, GS/OS won't crash.