83Plus:Basic:Graphics:Line(

Synopsis

Token size: 1 byte

Syntax: Line(x1,y1,x2,y2,[drawmode])

Draws or erases a line.

Outputs:

The line defined by (x1, y1), (x2, y2) is drawn to the graph screen is drawn, if drawmode is 1, or erased, if drawmode is 0. If omitted, drawmode is assumed to be 1.

Comments

• Endpoint coordinates are those defined by window settings, not by pixels
• Will throw no ERR:DOMAINs
• Functions, plots, and axes are not redrawn.

Examples

To draw a line from the top left corner of the screen to the bottom right corner, wait, then erase it:

:Line(Xmin,Ymax,Xmax,Ymin)
:Pause
:Line(Xmin,Ymax,Xmax,Ymin,0)

Draw a "unit square" centered at the origin:

:Line(1,1,-1,1)
:Line(-1,1,-1,-1)
:Line(-1,-1,1,-1)
:Line(1,-1,1,1)

See also:

Horizontal
Vertical