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#  ZOpenGLTimerThread.py

# encodig: utf-8

import sys
import os
import math
import traceback
import time
import threading

import numpy as np

from PyQt5.QtWidgets import *
from PyQt5.QtCore import QThread, pyqtSignal

 
class ZOpenGLTimerThread(QThread):

  # ZOpenGLTimerThread Constructor
  def __init__(self, opengl_view, interval = 200):  #200msec
    QThread.__init__(self)
    if opengl_view == None:
      raise ValueError("ZOpenGLTimerThread: opengl_view is None")
       
    self.opengl_view = opengl_view
    self.rendering_interval = interval/1000
    self.looping = True


  def terminate(self):
    self.looping = False


  def run(self):
    while self.looping == True:
      time.sleep(self.rendering_interval)
      self.opengl_view.update()

