Python for 3ds max - animate vertices

max_mesh_animation.py

import MaxPlus
import math
from MaxPlus import INode
from MaxPlus import TriObject
from MaxPlus import SelectionManager
from MaxPlus import Factory
from MaxPlus import Animation
from MaxPlus import Point3
from MaxPlus import Control

ticks_frame = 160

#Selection
sel = []
for n in SelectionManager.Nodes:
	sel.append(n)
node = sel[0]

#Setup Controllers
obj = node.GetObject()
Tri = TriObject._CastFrom(obj)
mesh = Tri.GetMesh()
num_verts = mesh.GetNumVertices()
mesh_anim = obj.GetSubAnim(0)
pnt_ctrl = Factory.CreateDefaultMasterPointController()
node.AssignController(pnt_ctrl,1)
for i in range(num_verts):
	bezp3 = Factory.CreateDefaultPoint3Controller()
	bezp3.SetPoint3Value(mesh.GetVertex(i))
	mesh_anim.AssignController(bezp3,i)

#Animation
Animation.SetAnimateButtonState(True)
for t in range(100):
	time = t * ticks_frame
	Animation.SetTime(time)
	mesh_anim.AddNewKey(time,0)
	for i in range(num_verts):
		vert_anim = mesh_anim.GetSubAnim(i)
		vert_ctrl = Control._CastFrom(vert_anim)
		vert_val = mesh.GetVertex(i)
		vert_val.SetZ(vert_val.GetZ() + math.sin(((Animation.GetTime()*0.5)/(ticks_frame))+i))
		vert_ctrl.SetPoint3Value(vert_val)
Animation.SetAnimateButtonState(False)