extends Sprite

onready var global_v=get_tree().get_root().get_node("previewer")

func _ready():
    pass

func _process(delta):
    self.material.set("shader_param/iTime",global_v.iTime)
    self.material.set("shader_param/iFrame",global_v.iFrame)

func cov_scb(value):
    self.material.set("shader_param/COVERAGE",float(value))

func thick_scb(value):
    self.material.set("shader_param/THICKNESS",value)

func absb_scb(value):
    self.material.set("shader_param/ABSORPTION",float(value))
    
func step_scb(value):
    self.material.set("shader_param/STEPS",value)