83Plus:Basic:Graphics:Line(

Synopsis

Token size: 1 byte

Syntax: Line(X1,Y1,X2,Y2,[1 or 0])

Draws or erases a line from (X1, Y1) to (X2, Y2).

Outputs:

Line drawn to or erased from the graph screen.

Comments

• Endpoint coordinates are those defined by window settings, not by pixels
• The last argument is assumed ot be 1 if omitted. A value of 1 draws a line, a value of 0 erases one.
• 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)