Casio Graphical Calculator Encyclopaedia

`Token:`	`PxlChg`
`Type:`	`IO function`
`Usage:`	[Orange \|Green ]PxlChg <row>, <col>

`Definition:`

Toggles the 'filled' state of the pixel at row <row> from the top, column <col> from the left. If Orange or Green are specified, unfilled pixels will become the specified colour rather than blue, but filled pixels of any colour will always become clear.

`Other information:`

This is one of the Pxl... commands, which act directly on the graphics screen, rather than plotting a point relative to the current axes. If the standard range ('Range 1, 127, 0, 1, 63, 0') is being used, the same pixel could also be coloured using the command 'Plot <col>, 64-<row>'. Notice that the horizontal and vertical co-ordinates are referred to in the opposite order, and that the vertical co-ordinate is measured in the opposite direction. Using the range 'Range 1, 127, 0, 63, 1, 0' will give axes which are measured from the top down so that it is only necessary to swap the order of the co-ordinates when changing between axes-based and screen-based commands.

Unlike the Plot command, this command cannot be followed by a display triangle (_) to allow direct pixel editing.

   Command     Speed (pxl/s)
   ~~~~~~~~~~~~~~~~~~~~~~~~~
   Plot            7
   Pxl...         11
   Plot...        11

See also: PxlOn, PxlOff, PxlTest, PlotOn, PlotOff, PlotChg, Plot, Line

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This page was created by Tom Lynn. Comments etc. to: thl22@cam.ac.uk.
This page last updated: Friday, 30 April, 1999

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