extends DeckNode


func _init() -> void:
	name = "Normalize Vector"
	node_type = "vector_normalize"
	description = "Normalizes a vector so its' length (magnitude) is exactly 1."
	category = "math"

	add_input_port(
		DeckType.Types.DICTIONARY,
		"Vector"
	)

	add_output_port(
		DeckType.Types.DICTIONARY,
		"Result"
	)


func _value_request(_on_port: int) -> Variant:
	var v = request_value(0)
	if !v:
		return null

	if !(v as Dictionary).has("x") || !(v as Dictionary).has("y"):
		return null

	var l: float = (v.x ** 2.0) + (v.y ** 2.0)
	var res := {"x": v.x, "y": v.y}
	if l != 0:
		l = sqrt(l)
		res.x = res.x / l
		res.y = res.y / l
		return res

	print("vector length is 0, can't normalize. returning null")

	return null