// WholeGame
func (o IFS) WholeGame(src *canvas.Canvas, n int) *canvas.Canvas {
t1 := src.Dup()
t2 := canvas.NewCanvas(src.Width, src.Height)
for i := 0; i < n; i++ {
canvas.Say("WholeStep", i)
o.WholeStep(t1, t2)
t1, t2 = t2, t1
t2.Fill(0, 0, t2.Width, t2.Height, canvas.Black)
}
return t1
}
