[PyQt] Re: PyQT and OpenGL

[Tim De Graeve]

Never mind that question,

I found the problem.
In stead of writing
glRectf(-25.0, 25.0, 25.0, 25.0)

I had to write
glRectf(-25.0, 25.0, 25.0, -25.0)

Sorry for that

Tim De Graeve wrote:
> Hello,
>
> I don't know if this is the right mailing list to post my question on 
> because I don't know if my problem is QT or OpenGL related.
> Anyway I am taking my first steps with PyQT and OpenGL and wrote the 
> following code based on the C++ code from the book OpenGL Superbible 
> and the gears.py sample delivered with PyQT:
>
> #!/usr/bin/env python
>
> import sys
> from qt import *
> from qtgl import *
> from OpenGL.GL import *
>
> class TestGLWidget(QGLWidget):
>    def __init__(self,parent=None,name=None):
>        QGLWidget.__init__(self,parent,name)
>          def paintGL(self):
>        glClear(GL_COLOR_BUFFER_BIT)
>        glColor3f(1.0, 0.0, 0.0)
>        glRectf(-25.0, 25.0, 25.0, 25.0)
>        glFlush()
>          def resizeGL(self, w, h):
>        if (h == 0):
>            h = 1
>                  glViewport(0, 0, w, h)
>              glMatrixMode(GL_PROJECTION)
>        glLoadIdentity();
>              aspectRatio = w / h
>              if (w <= h):
>            glOrtho (-100.0, 100.0, -100 / aspectRatio, 100.0 / 
> aspectRatio, 1.0, -1.0)
>        else:
>            glOrtho (-100.0 * aspectRatio, 100.0 * aspectRatio, -100.0, 
> 100.0, 1.0, -1.0)
>                  glMatrixMode(GL_MODELVIEW)
>        glLoadIdentity()
>      def initializeGL(self):
>        glClearColor(0.0, 0.0, 1.0, 1.0)
>
>   if __name__=='__main__':
>    QApplication.setColorSpec(QApplication.CustomColor)
>    app=QApplication(sys.argv)
>
>    if not QGLFormat.hasOpenGL():
>        raise 'No Qt OpenGL support.'
>
>    widget=TestGLWidget()
>    app.setMainWidget(widget)
>    widget.show()
>    app.exec_loop()
>
>
> Now the problem that I have is that I only get a blue window, without 
> the rectangle that needs to be drawn in it. Can someone help me to 
> solve this problem, or am I on the wrong mailing list for this?
>
> Thanks.
>
> Kind regards,
>
> Tim De Graeve
>