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cmd_pton |
Function (ROM Call 0x374) |
Executes TI-Basic 'PtOn' command.
cmd_pton displays the Graph Screen and turns on the screen pixel nearest to
the window coordinates (x,y) which are relative to the current window
settings (you can change them using the "Window Editor" application, or
directly by storing values in system variables like "xmin", using the
VarStore function).
The parameters xValOrList and yValOrList should either point
to integer or floating point items on the expression stack, or to lists of
integer or floating
point items which contain x and y coordinates respectively (both lists must
have an equal number of elements). In the second case, a set of corresponding
pixels will be turned on, instead of just one pixel.
See also cmd_pxlon, which uses pixel
coordinates instead of window relative ones, and
DrawPix for much faster low-level pixel
drawing (independently of the Graph Screen).
Uses: GetValue, next_expression_index, gr_active, ForceFloat, GraphActivate, XCvtFtoP, YCvtFtoP, WinAttr, WinDupStat, WinPixSet, _bcd_math
See also: cmd_ptoff, cmd_ptchg, cmd_pxlon, cmd_line, cmd_circle, DrawPix