extends Node

@onready var p1 = $Polygon2D
@onready var p2 = $Polygon2D2

var lines = []

func _process(delta: float) -> void:
	for l in lines:
		DebugDraw3D.draw_lines(l, Color.DARK_RED)

func chunk_array(arr: Array, chunk_size: int) -> Array:
	var result_chunks = []
	var i = 0
	while i < arr.size():
		var chunk = arr.slice(i, i + chunk_size)
		result_chunks.append(chunk)
		i += chunk_size
	return result_chunks

func _ready() -> void:
	var tri = Triangulization.new()
	
	var p1_vectors = [Vector2(4, 0), Vector2(4, 4), Vector2(0, 4), Vector2(0, 0)]
	var p2_vectors = [Vector2(2, 1), Vector2(2, 2), Vector2(1, 2), Vector2(1, 1)]
	
	p1.polygon = p1_vectors
	p2.polygon = p2_vectors
	
	p2.color = Color(1, 0, 1)
	
	var result = tri.triangulate_with_holes(p1, p2)
	
	var packedVector2 = p1_vectors
	packedVector2.append_array(p2_vectors)
	
	var triangles = chunk_array(result, 3)
	print(triangles)
	
	print(packedVector2)
	
	for t in triangles:
		var triangle_line = []
		for ti in range(len(t)):
			var rindex = t[ti]
			var rindexnext = t[(ti+1) % len(t)]
			var v1 = packedVector2[rindex]
			var v2 = packedVector2[rindexnext]
			var vector1 = Vector3(v1.x, v1.y, 0)
			var vector2 = Vector3(v2.x, v2.y, 0)
			
			triangle_line.append(vector1)
			triangle_line.append(vector2)
		lines.append(triangle_line)
	
	print(lines)