func Example() {
// Create a Hilbert curve for mapping to and from a 16 by 16 space.
s, _ := hilbert.NewHilbert(16)
// Create a Peano curve for mapping to and from a 27 by 27 space.
//s, _ := hilbert.NewPeano(27)
// Now map one dimension numbers in the range [0, N*N-1], to an x,y
// coordinate on the curve where both x and y are in the range [0, N-1].
x, y, _ := s.Map(96)
// Also map back from (x,y) to t.
t, _ := s.MapInverse(x, y)
fmt.Printf("x = %d, y = %d, t = %d\n", x, y, t)
// Output:
// x = 4, y = 12, t = 96
}
func main() {
setupDraw2D()
newHilbert := func(n int) hilbert.SpaceFilling {
s, err := hilbert.NewHilbert(int(math.Pow(2, float64(n))))
if err != nil {
panic(fmt.Errorf("failed to create hilbert space: %s", err.Error()))
}
return s
}
newPeano := func(n int) hilbert.SpaceFilling {
s, err := hilbert.NewPeano(int(math.Pow(3, float64(n))))
if err != nil {
panic(fmt.Errorf("failed to create peano space: %s", err.Error()))
}
return s
}
if err := mainDrawOne("hilbert.png", newHilbert(3)); err != nil {
log.Fatalf("Failed to draw image: %s", err.Error())
}
if err := mainDrawAnimation("hilbert_animation.gif", newHilbert, 1, 8); err != nil {
log.Fatalf("Failed to draw animation: %s", err.Error())
}
if err := mainDrawOne("peano.png", newPeano(2)); err != nil {
log.Fatalf("Failed to draw image: %s", err.Error())
}
if err := mainDrawAnimation("peano_animation.gif", newPeano, 1, 6); err != nil {
log.Fatalf("Failed to draw animation: %s", err.Error())
}
}