Texas Instruments TITANIUM TI-89 - Manual (Page 631)

Programming 631
Drawing a Point or Pixel Drawing a Point or Pixel Drawing a Point or Pixel Drawing a Point or Pixel
Drawing Lines and Circles Drawing Lines and Circles Drawing Lines and Circles Drawing Lines and Circles
Command Description
PtChg or
PxlChg Toggles (inverts) a pixel at the specified coordinates.
PtChg, which uses point coordinates, affects the pixel
closest to the specified point. If the pixel is off, it is turned
on. If the pixel is on, it is turned off.
PtOff or
PxlOff Turns off (erases) a pixel at the specified coordinates.
PtOff, which uses point coordinates, affects the pixel
closest to the specified point.
PtOn or
PxlOn Turns on (displays) a pixel at the specified coordinates.
PtOn, which uses point coordinates, affects the pixel
closest to the specified point.
PtTest or
PxlTest Returns true or false to indicate if the specified coordinate
is on or off, respectively.
PtText or
PxlText Displays a character string at the specified coordinates.
Command Description
Circle or
PxlCrcl Draws, erases, or inverts a circle with a specified center
and radius.
DrawSlp Draws a line with a specified slope through a specified
point.
Line or
PxlLine Draws, erases, or inverts a line between two sets of
coordinates.