=pyglet <<Richard Jones, pyglet developer
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why pyglet?
this is a question some of you may be asking
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no binaries -<<(no compilation)
a big goal of pyglet was to have no additional installation requirements and
definitely no compilation
definitely no compilation
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multiplatform
Windows, OS X, Linux
consistent across platforms
a lot of the 1.0 development was spent sorting out platform issues
consistent across platforms
a lot of the 1.0 development was spent sorting out platform issues
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it's well-designed
most of the rest of the 1.0 development was spent refining the design of pyglet
and putting in place the design patterns that would shape further
development
and putting in place the design patterns that would shape further
development
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many screens, many windows
it understands multi-head systems
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*and besides...
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=Python is good
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=OpenGL is good
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<<Modern graphics cards are powerful
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=Modern Operating Systems -=are mostly good
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=ctypes is good -<<(if a little slow)
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Put all these together and you get pyglet
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<which *>>rocks
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aside... -pygame -pyopengl
pygame cons: SDL, single window, no multi-head support
pyopengl: it's just OpenGL - no windowing, events, media, etc.
pyopengl: it's just OpenGL - no windowing, events, media, etc.
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=Components
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display... =OpenGL
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windowing... =xlib, Carbon, Win32
provide window & screen management, event sources
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import pyglet window = pyglet.window.Window() pyglet.app.run()
the most basic pyglet (1.1) app
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import pyglet window = pyglet.window.Window() @window.event def on_text(text): if text == ' ': print 'You hit space' pyglet.app.run()
event handlers are recognised by name
if you want to handle multiple events you create an object with the handlers
if you want to handle multiple events you create an object with the handlers
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imaging... =gdk-pixbuf, Quicktime, GDI+
pyglet can load PNG (slowly), a subset of DDS (S3TC) textures
other libraries used to support other formats
other libraries used to support other formats
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which lets me do *this
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"awww..."
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"awww..."
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import pyglet
window = pyglet.window.Window()
image = pyglet.image.load('kitten.jpg')
@window.event
def on_draw():
image.blit(0, 0)
pyglet.app.run()27
optionally... =PIL
lets us decode strange many formats
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aside... =libpng, libjpeg
tried to use them initially
prevalent
setjmp and longjmp confuse ctypes
prevalent
setjmp and longjmp confuse ctypes
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audio output... =OpenAL, ALSA, DirectSound
OpenAL and ALSA (if we must) on Linux
OpenAL on OS X
DirectSound on Windows
OpenAL on OS X
DirectSound on Windows
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which lets me do
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this
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import pyglet
sound = pyglet.media.load('sound.wav')
sound.play()
pyglet.app.run()33
fonts... =fontconfig, freetype2, ATS, Win32
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which lets me do *this -/and this -:and this -*/:<and so on...
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ChozCunningham_-_Limberjack.ttf
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=Or This -*<<<"Or This"
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import pyglet
window = pyglet.window.Window()
text = pyglet.text.Label("Or This",
'Limberjack', 200,
color=(105,200,105,255))
@window.event
def on_draw():
text.draw()
pyglet.app.run()38
=Media decoding
pyglet can play WAV files with no support
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=Linux media is a mess
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gstreamer -unreliable installs -wants to own playback
and threads
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libavcodec -no stable ABI
used by ffmpeg, mplayer, etc
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libxine / libvlc -not common enough
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libmad, libvorbis, ... -not common enough -no video support
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PyMedia -not common enough -LGPL
pgylet is BSD
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<<<if you don't believe me... <<<http://code.google.com/p/pyglet/wiki/MediaOnLinux
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<<we also used Quicktime DirectShow -but they were fiddly
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bring on <http://code.google.com/p/avbin
interface to libavcodec
reliable ABI
reliable ABI
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"what?"
I hear you say
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"what about *the first rule of pyglet?"
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no binary? -simply no alternative
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and media...
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Video: TheMeaningOfLife.avi
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import pyglet
video = pyglet.media.load('video.avi')
player = media.Player()
player.queue(video)
player.play()
@window.event
def on_draw():
player.texture.blit(0, 0)
pyglet.app.run()54
=pyglet 1.0 features -<<Multiple windows -<<Multiple screens (and displays (X11)) -<<OpenGL contexts shared or independent -<<Streaming audio and video -<<TTF and Type 1 Postscript antialiased fonts
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=pyglet 1.1 features -<<Resource loading -<<Event loop -<<Graphics buffers -<<Fast sprites -<<Fast text -<<Formatted text layout -<<Animated GIF support
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=third parties -<<<(a sampler) -Cocos -rabbyt -ToGEPy
a sprite and game engine written to run over pyglet
a nice sprite and animation system, written in pyrex
a thinner interface to OpenGL than PyOpenGL, written in C
a nice sprite and animation system, written in pyrex
a thinner interface to OpenGL than PyOpenGL, written in C
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=credits <<Patrick Hofman for the foot image <<*fonts from <http://openfontlibrary.org/>: <<!Limberjack font by ChozCunningham
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pyglet.txt
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=pyglet BOF Haneda B 2:45 -*Questions?