This is a very basic graphics program I wrote for Turing.

[samiam97]

setscreen("graphics")
var x,x2:int:=0
var col:int
loop
randint(col,1,250)
x:=x+1
drawline(310,225,x,0,col)
delay(10)
exit when x=639
end loop
loop
randint(col,1,250)
x2:=x2+1
drawline(310,225,x2,399,col)
delay(10)
exit when x2=639
end loop

[Insectoid]

drawline() is very primitive. It draws the straightest line it can and does no more. You know how angled lines are always jagged? That's what's causing the problem. You could try using Draw.ThickLine() to make the lines overlap.

[Raknarg]

Or create a gradient triangle... woo