Invert Screen

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Routine Summary

This routine uses the PxlHorz function to invert the graph screen.

Inputs

None

Outputs

The graph screen is inverted as a result of this program.

Variables Used

i - a counter variable
size - the size of the graph screen window in pixels
All of these are locally declared.

Calculator Compatibility

TI-89/92/+/V200

:invert()
:Prgm
:Local i,size
:when(getConfg()[10]=160,76,102)→size
:For i,0,size
: PxlHorz i,-1
:EndFor
:EndPrgm

The -1 at the end of PxlHorz is a flag that tells the system to invert all pixels along the line. I chose PxlHorz because this requires less lines to be drawn than PxlVert does.

Error Conditions

None