Hi Steven,
You're pushing the hanlders in a wrong way, here's your class modified
to work as expected (see attach)
you can read more about using the event handlers at
http://www.pyglet.org/doc/programming_guide/the_pyglet_event_framework.html
basically you are doing this in the __init__
@self.window.event
def on_draw():
self.on_draw()
while you should be doing:
self.window.push_handlers(self.on_draw)
Regards,
Alex Verstraeten
On 7/5/2010 10:08 PM, Steven Clark wrote:
Hi all-
I'm scratching my head over this one.
I have a working pyglet script that was written in a
non-object-oriented fashion (gfx_test_1.py).
I then attempted to "object-orientify" this script by converting it
into a class (gfx_test_2.py).
Both files should be rendering a square using a 3d perspective
projection and then placing some text over top of the screen using a
2d ortho projection.
From the first script, I see the expected output. From the second
script, I see the text but not the 3d square underneath.
Any idea why? Is my use of decorators in second file incorrect?
Please take a look, the files are pretty short.
-Steven
PS: should my on_draw event return pyglet.event.EVENT_HANDLED (like
on_resize), or no?
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import pyglet
from pyglet.gl import *
class MyApp(object):
def __init__(self):
self.window = pyglet.window.Window(resizable=True)
self.window.push_handlers(self.on_resize)
self.window.push_handlers(self.on_draw)
self.label = pyglet.text.Label('Centered Text',
font_name='Times New Roman',
font_size=12,
x=self.window.width/2,
y=self.window.height/2,
anchor_x='center', anchor_y='center')
def on_resize(self, width, height):
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
gluPerspective(60.0, width / float(height), .1, 1000.0)
glMatrixMode(GL_MODELVIEW)
return pyglet.event.EVENT_HANDLED
def on_draw(self):
self.draw_world()
glMatrixMode(GL_PROJECTION)
glPushMatrix()
glLoadIdentity()
glOrtho(0, self.window.width, 0, self.window.height, -1, 1)
glMatrixMode(GL_MODELVIEW)
self.draw_overlay()
glMatrixMode(GL_PROJECTION)
glPopMatrix()
glMatrixMode(GL_MODELVIEW)
return pyglet.event.EVENT_HANDLED
def draw_world(self):
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glLoadIdentity()
gluLookAt(1.0, 2.0, 3.0,
0.0, 0.0, 0.0,
0.0, 0.0, 1.0)
glBegin(GL_LINE_LOOP)
glVertex3f(0,0,0)
glVertex3f(0,1,0)
glVertex3f(1,1,0)
glVertex3f(1,0,0)
glEnd()
def draw_overlay(self):
glLoadIdentity()
self.label.draw()
def run(self):
pyglet.app.run()
app = MyApp()
app.run()
