Terrain deform. Why does productivity decline over time?

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By Tort
:warning: Old Version Published before Godot 3 was released.

I’m testing the possibility of deformation of the surface (Change must occur in each frame). Question. Why does productivity decline over time?

extends Node

var terrain = null
var material = null
var mesh_new = Mesh.new()
var MDT = MeshDataTool.new()

    func _ready():
    	terrain = get_node('terrain')
    	
    	MDT.create_from_surface(terrain.get_child(0).get_mesh(), 0)
    	material = terrain.get_child(0).get_surface_material(0)
    	MDT.set_material(material)
    	
    func _process(delta):
    	terrain.get_child(0).set_mesh(mesh_new)
    	MDT.set_vertex(0, Vector3(MDT.get_vertex(0)[0], -10.0, MDT.get_vertex(0)[2]))
    	MDT.commit_to_surface(terrain.get_child(0).get_mesh())

Solved

terrain.get_child(0).get_mesh().surface_remove(0)

Tort | 2017-08-25 07:22