On Mon, Feb 25, 2008 at 12:34 PM, Peter Wang <[EMAIL PROTECTED]> wrote:
>
> Hey guys, I just saw this thread.
>
> Last week I was able to get some basic integration between wxPython
> and pyglet - some sample code is attached below. Although this
> program runs just fine, my actual usage is more complex and I've
> encountered some issues. Namely:
>
> 1. sometimes calling set_current() on both the pyglet Context and on
> the wx.GLCanvas results in a GL "invalid operation" exception
> (primarily on win32, not on OS X); however, I seem to need to call
> both in order to get correct rendering. (For example, pyglet's text
> rendering won't work until set_current has been called.)
>
> 2. sometimes the window is blank until I resize, regardless of how
> many times I swap buffers (via pyglet or wx), or how many times I draw
> into the window or interact with the GL area with my mouse.
>
> If anyone has any suggestions or ideas on how best to fix/debug these
> issues, I'd love to hear from them.
>
>
> Thanks,
> Peter
>
> -----------------------------
>
> from wx.glcanvas import GLCanvas
> from wx import *
> from OpenGL.GLUT import *
> from OpenGL.GLU import *
> from OpenGL.GL import *
>
> from pyglet import window, gl
> from pyglet.font import load, Text
>
> class myGLCanvas(GLCanvas):
> def __init__(self, parent):
> GLCanvas.__init__(self, parent,-1)
> EVT_PAINT(self, self.OnPaint)
> self.init = 0
> return
>
> def OnPaint(self,event):
> if not self.init:
> self.InitGL()
> self.init = 1
> self.ctx.set_current()
> self.SetCurrent()
> self.OnDraw()
> return
>
> def InitGL(self):
> self.init_pyglet()
> size = self.GetSize()
> glViewport(0, 0, size.width, size.height)
> glMatrixMode(GL_PROJECTION)
> glLoadIdentity()
> glOrtho(0, size.width, 0, size.height, 1, -1);
> glMatrixMode(GL_MODELVIEW)
> glLoadIdentity()
>
> def OnDraw(self):
> # Clear the background
> glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
> size = self.GetSize()
> glColor(0.827, 0.827, 0.827, 1.0)
> glRectf(0, 0, size.width, size.height)
>
> # draw a box
> glColor(1, 0, 0, 1)
> glLineWidth(2)
> glBegin(GL_POLYGON)
> glVertex2f(50, 50)
> glVertex2f(50, 100)
> glVertex2f(100, 100)
> glVertex2f(100, 50)
> glEnd()
>
> # Draw the pyglet text
> self.text.draw()
>
> self.SwapBuffers()
>
> def init_pyglet(self):
> self.ctx = gl.Context()
> self.ctx.set_current()
> ft = load("Comic Sans MS", 24)
> self.text = Text(ft, "Pyglet FTW!", x=150, y=50, color=(0,0,0,1))
>
>
> def main():
> app = wx.PySimpleApp()
> frame = wx.Frame(None,-1,'wxPyglet',wx.DefaultPosition,wx.Size(400,400))
> canvas = myGLCanvas(frame)
> frame.Show()
> app.MainLoop()
>
> if __name__ == '__main__': main()
>
>
Hey Peter,
Interesting. Pyglet and GUI integration would definitely be cool.
Maybe I missed something in your code, but why are you importing from
OpenGL instead of pyglet.gl? pyglet provides a ctypes binding around
OpenGL, so ideally your application should depend on pyglet or
pyOpenGL - but not both.
Cheers,
-Drew
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