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Asked By | XavierGerD |
Hi,
I’m trying to rotate a Node2D, including all of its children, along a specified axis. That is, I want the user to click on a part of a ColorRect and have the whole scene rotate around where the mouse is located. Is that possible, and if so, how would I achieve that?
Thanks!
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Reply From: | avencherus |
Sure, many ways of achieving it with inherited transforms of nodes. Using ColorRect and such, a Node2D as a pivot is the simplest way.
If I understood correctly, maybe something like this, though the effect is a bit unusual when keeping a large rectangle around some relative center point.
extends Node2D
var pivot : Node2D
var rect : ColorRect
func resolution():
return Vector2(
ProjectSettings.get("display/window/size/width"),
ProjectSettings.get("display/window/size/height"))
func add_sprite(p_node, p_pos):
var s = Sprite.new()
s.texture = preload("res://icon.png")
p_node.add_child(s)
s.position = p_pos
func _ready() -> void:
pivot = Node2D.new()
add_child(pivot)
rect = ColorRect.new()
pivot.add_child(rect)
var res = resolution()
var mid = res / 2.0
rect.rect_size = resolution()
rect.show_behind_parent = true
update_pivot(mid)
pivot.connect("draw", self, "dot")
update()
add_sprite(rect, mid + Vector2(-100, 100))
add_sprite(rect, mid + Vector2( 200, 120))
add_sprite(rect, mid + Vector2( 500, -20))
func dot():
pivot.draw_circle(Vector2(), 3.0, Color.red)
func update_pivot(p_pos):
pivot.position = p_pos
rect.rect_position = -p_pos
var time = 0.0
var speed = 1.0
func _physics_process(delta):
time += delta * speed
time = fmod(time, TAU)
pivot.rotation = time
if(Input.is_mouse_button_pressed(BUTTON_LEFT)):
update_pivot(get_global_mouse_position())