draw-line in dc<%>

Draws a line from one point to another. The line covers both the start and end points. The current pen is used for drawing the line.

• (send a-dc draw-line x1 y1 x2 y2) -> void
     x1 : real number
     y1 : real number
     x2 : real number
     y2 : real number

  Restrictions on the magnitude of drawing coordinates are described with dc<%>.