Re: [Pyobjc-dev] PyObjC, OpenGL & XCode

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

I answered my own question. I don't entirely know why this would make  
a difference, but declaring an awakeFromNib function (even with no  
body other than pass) for some reason made the reshape and  
prepareOpenGL functions start to work.


On Sep 27, 2008, at 11:35 AM, Black wrote:

>
>
> 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
>
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