extends RefCounted

class_name Faces

var faces: Array[Face]

func _init(verts: PackedVector3Array, uvs: PackedVector2Array, normals: PackedVector3Array) -> void:
	assert(len(verts) == len(uvs), "number of verts vs uvs do not match")
	assert(len(normals)*3 == len(verts), "missing normal data")
	
	for i in range(0, len(normals)):
		var start_index = i*3
		
		var v0 = verts[start_index]
		var v1 = verts[start_index+1]
		var v2 = verts[start_index+2]
		
		var varray = PackedVector3Array([v0, v1, v2])
		
		var u0 = uvs[start_index]
		var u1 = uvs[start_index+1]
		var u2 = uvs[start_index+2]
		
		var uarray = PackedVector2Array([u0, u1, u2])
		
		self.faces.append(Face.new(varray, uarray, normals[i]))

func get_faces() -> Array[Face]:
	return faces