[Pyobjc-dev] PyObjC, OpenGL & XCode

[Black <py...@bl...>]

Hopefully someone can help me out here. I am, as the subject suggests,  
trying to get OpenGL and PyObjC to play nice.

I have been successful in the past using the general format of the  
OpenGL example included in the PyObjC distribution, but I have found  
that I was having some trouble with modifying it due to the new  
Interface Builder. As a result, I decided to give the new XCode based  
approach a go. I created a new document based python application and  
then generally followed the path of the golden triangle demo in the  
OpenGL programming guide from the Apple dev center. That worked fine  
and I got a nice triangle displaying.

The problem comes when I start to get a little more involved. My view  
is a subclass of NSOpenGLView and I want to be able to override the  
useful methods like prepareOpenGL and reshape. However, as soon as I  
add one of those functions (even if they don't do anything), the  
application breaks and this shows up in the console:

9/27/08 11:26:08 AM Analyzer[19022] *** Terminating app due to  
uncaught exception 'NSInternalInconsistencyException', reason: '/ 
Volumes/Valhalla/candrews/src/analyzer/Analyzer/main.m:44 main()  
PyRun_SimpleFile failed with file '/Volumes/Valhalla/candrews/src/ 
analyzer/Analyzer/build/Release/Analyzer.app/Contents/Resources/ 
main.py'.  See console for errors.'

9/27/08 11:26:08 AM Analyzer[19022] Stack: (
     2505597259,
     2473656571,
     2505596715,
     2505596778
)

Anyone have any ideas? The relevant class looks like this:

from Foundation import *
from AppKit import *
import objc
from OpenGL.GL import *
from OpenGL.GLU import *



class AnalyzerOpenGLView(NSOpenGLView):


     def prepareOpenGL(self):
         """
         This is called once after the OpenGL context is created. Put  
OpenGL
         initialization stuff in here.
         """
         glClearColor(1.0,1.0,1.0,1.0)


    def drawRect_(self, ((x, y), (w, h))):
         """
         This function is where all of the drawing should take place.
         """
         #glClearColor(0,0,0,1.0)
         glClear(GL_COLOR_BUFFER_BIT)
         glMatrixMode(GL_MODELVIEW)
         glLoadIdentity()
         glColor3ub(255, 0, 0)
         glBegin(GL_TRIANGLES)
         glVertex3f( 0.0, 0.6, 0.0)
         glVertex3f( -0.2, -0.3, 0.0)
         glVertex3f( 0.2, -0.3 ,0.0)

         glEnd()

         glFlush()



Thanks,
Black