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(84) :pxl-Test(row,column)
(89) :PxlTest(row,column)

pxl-Test( allows you to test whether a pixel is on or not. It returns a 0 if the pixel is not a pixel on. It returns a 1 if there is a pixel.

LocationEdit

  • Draw
  • POINTS
  • 7:pxl-Test(

ExampleEdit

:AxesOff
:ClrDraw
:Pxl-On(5,5
:Pause
:ClrHome
:pxl-Test(5,5

Puts a pixel on 5,5 then pauses then display a 1 because there is a pixel on at 5,5. If there was not it would display a 0.

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