Draws a 1 pixel wide line from x1 by y1, to x2 by y2.
// an example of drawing a diagonal line
// from 10x10 to 100x100
drawLine( 10, 10, 100, 100 )Width this you can specify a line 'width', in pixels, which is used when the line is drawn.
// draws a very wide, diagonal line
drawLine( 10, 10, 100, 100, 50 )