Fixed issue with gap between pixels, allowing PAINT to spill out of bounded area

[CharlieJV]

https://basicanywheremachine-news.blogspot.com/2023/01/fix-to-issue-causing-paint-to-spill-out.html

[johnno56]

One pixel out by using floor() instead of round()... I would not have found the solution to that one... Well spotted!!

[CharlieJV]

One pixel out by using floor() instead of round()... I would not have found the solution to that one... Well spotted!!

Yeah, I thought for sure I was diving into a long and painful dissection of foreign-to-me javascript code.

I'm some glad I decided to drop the resolution of the screen (and turn off image smoothing) to better see the pixels.

Definitely got lucky on that one.