netgen/py_tutorials/opengl_thread.py

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from netgen.csg import *
import netgen.meshing as meshing
import libvisual
from OpenGL.GLUT import *
# import Window class from other file
from opengl_window import Window
sp1 = Sphere (Pnt(0,0,0), 0.2)
sp2 = Sphere (Pnt(0.5,0,0), 0.2)
all = sp1+sp2
geom = CSGeometry()
geom.Add (all)
param = meshing.MeshingParameters()
param.maxh = 0.1
m1 = GenerateMesh (geom, param)
vis = VS(geom)
# window callback functions
def mydraw():
vis.Draw()
glutSwapBuffers()
def mymouse(xold, yold, x, y, mode):
MouseMove(vis,xold,yold, x,y, mode)
###########################################
glutInit("mainwin")
# IMPORTANT: create window in the mainloop - thread!
## not working:
#win_geom = Window( name=b"ngs", drawfunc=mydraw, mousefunc=mymouse)
def runVisualization():
## working:
win_geom = Window( name=b"ngs", drawfunc=mydraw, mousefunc=mymouse)
glutMainLoop()
# create thread
from threading import Thread
thread = Thread(target = runVisualization)
thread.start()
thread.join()