[vcf-midatlantic] Eliminating flicker

Evan Koblentz evan at vcfed.org
Sun Apr 9 00:03:26 EDT 2017

Dan showed me how to change my program to not flicker (constantly redraw 
the joystick plot) by having it always check the state of where it just 
was before plotting.

Now the plot moves around the screen and looks MUCH better.

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