An implementation of Bresenham's Line Algorithm written in Factor. The bresenham word takes two points and returns a sequences of { x y } pairs representing each point on the line.
{ 0 0 } { 4 9 } bresenham {
{ 0 0 }
{ 0 1 }
{ 1 2 }
{ 1 3 }
{ 2 4 }
{ 2 5 }
{ 3 6 }
{ 3 7 }
{ 4 8 }
{ 4 9 }
}