Lab for exploring 2D arrays. Comes with an executable jar (verified under Java 8) to illustrate how the finished tool is intended to function. Distributed with a student worksheet SuperPixelGridCompanion.
NOTE: MacOS - Recent versions of MacOS respond to an extended key press (ie. key held down) by bringing up a context menu for selection of special accent characters rather than sending a series of repeated keypress signals. While short key presses are unaffected, sustained key presses will behave erratically. To avoid this outcome, disable the character accent menu and enable auto-repeat by entering the following at the command prompt:
defaults write -g ApplePressAndHoldEnabled -bool false
The change may be reversed later with the following command:
defaults write -g ApplePressAndHoldEnabled -bool true