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remove some other occurences of pylab
remove some other occurences of pylab

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inputhookglut.py
175 lines | 6.0 KiB | text/x-python | PythonLexer
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 # coding: utf-8
"""
GLUT Inputhook support functions
"""
#-----------------------------------------------------------------------------
Matthias BUSSONNIER
update copyright to 2011/20xx-2011...
r5390 # Copyright (C) 2008-2011 The IPython Development Team
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 #
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
# GLUT is quite an old library and it is difficult to ensure proper
# integration within IPython since original GLUT does not allow to handle
# events one by one. Instead, it requires for the mainloop to be entered
# and never returned (there is not even a function to exit he
# mainloop). Fortunately, there are alternatives such as freeglut
# (available for linux and windows) and the OSX implementation gives
# access to a glutCheckLoop() function that blocks itself until a new
# event is received. This means we have to setup the idle callback to
# ensure we got at least one event that will unblock the function.
#
# Furthermore, it is not possible to install these handlers without a window
# being first created. We choose to make this window invisible. This means that
# display mode options are set at this level and user won't be able to change
# them later without modifying the code. This should probably be made available
# via IPython options system.
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import os
import sys
import time
import signal
import OpenGL.GLUT as glut
import OpenGL.platform as platform
from timeit import default_timer as clock
#-----------------------------------------------------------------------------
# Constants
#-----------------------------------------------------------------------------
# Frame per second : 60
# Should probably be an IPython option
glut_fps = 60
Bernardo B. Marques
remove all trailling spaces
r4872
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831
# Display mode : double buffeed + rgba + depth
# Should probably be an IPython option
glut_display_mode = (glut.GLUT_DOUBLE |
glut.GLUT_RGBA |
glut.GLUT_DEPTH)
glutMainLoopEvent = None
if sys.platform == 'darwin':
try:
Bernardo B. Marques
remove all trailling spaces
r4872 glutCheckLoop = platform.createBaseFunction(
'glutCheckLoop', dll=platform.GLUT, resultType=None,
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 argTypes=[],
Bernardo B. Marques
remove all trailling spaces
r4872 doc='glutCheckLoop( ) -> None',
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 argNames=(),
)
except AttributeError:
raise RuntimeError(
'''Your glut implementation does not allow interactive sessions'''
'''Consider installing freeglut.''')
glutMainLoopEvent = glutCheckLoop
elif glut.HAVE_FREEGLUT:
glutMainLoopEvent = glut.glutMainLoopEvent
else:
raise RuntimeError(
'''Your glut implementation does not allow interactive sessions. '''
'''Consider installing freeglut.''')
#-----------------------------------------------------------------------------
# Platform-dependent imports and functions
#-----------------------------------------------------------------------------
if os.name == 'posix':
import select
def stdin_ready():
infds, outfds, erfds = select.select([sys.stdin],[],[],0)
if infds:
return True
else:
return False
elif sys.platform == 'win32':
import msvcrt
def stdin_ready():
return msvcrt.kbhit()
#-----------------------------------------------------------------------------
# Callback functions
#-----------------------------------------------------------------------------
def glut_display():
# Dummy display function
pass
def glut_idle():
# Dummy idle function
pass
def glut_close():
# Close function only hides the current window
glut.glutHideWindow()
glutMainLoopEvent()
def glut_int_handler(signum, frame):
# Catch sigint and print the defautl message
signal.signal(signal.SIGINT, signal.default_int_handler)
print '\nKeyboardInterrupt'
# Need to reprint the prompt at this stage
#-----------------------------------------------------------------------------
# Code
#-----------------------------------------------------------------------------
def inputhook_glut():
"""Run the pyglet event loop by processing pending events only.
Bernardo B. Marques
remove all trailling spaces
r4872
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 This keeps processing pending events until stdin is ready. After
processing all pending events, a call to time.sleep is inserted. This is
needed, otherwise, CPU usage is at 100%. This sleep time should be tuned
though for best performance.
"""
# We need to protect against a user pressing Control-C when IPython is
# idle and this is running. We trap KeyboardInterrupt and pass.
signal.signal(signal.SIGINT, glut_int_handler)
try:
t = clock()
# Make sure the default window is set after a window has been closed
if glut.glutGetWindow() == 0:
glut.glutSetWindow( 1 )
glutMainLoopEvent()
return 0
while not stdin_ready():
glutMainLoopEvent()
# We need to sleep at this point to keep the idle CPU load
Bernardo B. Marques
remove all trailling spaces
r4872 # low. However, if sleep to long, GUI response is poor. As
Nicolas Rougier
Removed the timer callback in favor of the idle one and re-use wx waiting time after an event is processed. This make things more reactive. Also, the created window is now made insivisible and is not supposed to be ever show or detroyed. Finally, fixed the bug in window closing for linux platform using the glutSetOption available on Freeglut.
r4831 # a compromise, we watch how often GUI events are being processed
# and switch between a short and long sleep time. Here are some
# stats useful in helping to tune this.
# time CPU load
# 0.001 13%
# 0.005 3%
# 0.01 1.5%
# 0.05 0.5%
used_time = clock() - t
if used_time > 5*60.0:
# print 'Sleep for 5 s' # dbg
time.sleep(5.0)
elif used_time > 10.0:
# print 'Sleep for 1 s' # dbg
time.sleep(1.0)
elif used_time > 0.1:
# Few GUI events coming in, so we can sleep longer
# print 'Sleep for 0.05 s' # dbg
time.sleep(0.05)
else:
# Many GUI events coming in, so sleep only very little
time.sleep(0.001)
except KeyboardInterrupt:
pass
return 0