Ok, now I can set pixel coordinates, and no longer have to think about custom characters
...
It was hard because each line for a custom char is still a byte, but only five bits of it are used,
and the LCD wants them in the least significant bits, but my framebuffer is a continuous stream of bits.
I'll try the line drawing, and calculating proper angles for balls.
A smaller (single pixel) ball works better in the small space, but didn't make for a good video.
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