extends Panel

onready var main_canvas_container = Global.main_canvas_container


# Called when the node enters the scene tree for the first time.
func _ready() -> void:
	update_transparent_shader()

	#Set anchors for ShaderVision
	Global.greyscale_vision.visible = false
	Global.greyscale_vision.anchor_left = ANCHOR_BEGIN
	Global.greyscale_vision.anchor_top = ANCHOR_BEGIN
	Global.greyscale_vision.anchor_right = ANCHOR_END
	Global.greyscale_vision.anchor_bottom = ANCHOR_END


func _on_main_canvas_item_rect_changed() -> void:
	update_transparent_shader()


func _on_main_canvas_visibility_changed() -> void:
	update_transparent_shader()


func update_transparent_shader():
	# works independently of the transparency frature
	material.set("shader_param/screen_resolution", get_viewport().size)
	material.set("shader_param/position", main_canvas_container.rect_global_position)
	material.set("shader_param/size", main_canvas_container.rect_size)