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Zoom causes problems

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2005-11-19
2013-04-25
  • Nobody/Anonymous

    Zoom causes problems.

    After having selected an area to zoom then the
    plot disappears. Resizing the plot window may
    bring the plot back, but octplot has gone into
    an unstable state and is not really responding.
    Typing octplot_redraw does not bring back the
    plot.

    Has anybody seen this problem ?.

    I also noticed that when I select an area
    to zoom, then the selection window is very
    slow to update when I move the mouse. Is
    this normal or is it a side effect of the
    problem mentioned above.

    My system is :

    Debian Etch (testing)

    Some details from config.log

    octplot is configured with:
       fltk:        version 1.1.6 with OpenGl support
       octave:      octave (version 2.1.72)
       mkoctfile:   mkoctfile for Octave 2.1.72

    Peter Jensen

     
    • Shai Ayal

      Shai Ayal - 2005-11-19

      Peter,

      This looks like a unique problem. Maybe it is connected with the gcc-4 problem (it's like a scapegoat now -- everything is gcc's fault). To see if this is indeed the probem, try setting GLIBCXX_FORCE_NEW=1 before runnign octave, e.g.

      GLIBCXX_FORCE_NEW=1 octave

      Tell me if it helps

       
    • Nobody/Anonymous

      Shai,

      I had already added :

      export GLIBCXX_FORCE_NEW=1

      In my login script to avoid the crash.
      However I added 

         export GL_SWAP_TYPE=COPY,

      as you suggested in you README file.
      Octplot now works !!

      As far as I can understand from
      you note GL_SWAP_TYPE=COPY is needed
      when there is no HW support for OpenGL.
      However kinfocenter shows that I have HW
      support on my "Intel Corporation 82845G/GL
      [Brookdale-G]/GE Chipset". According to
      the configure log (config.log) from octplot
      I have :

      configure:4325: checking for fltk-config
      configure:4343: found /usr/bin/fltk-config
      configure:4356: result: /usr/bin/fltk-config
      configure:4380: checking for OpenGL support in fltk
      configure:4395: result: yes

      octplot is configured with:
         fltk:        version 1.1.6 with OpenGl support
         octave:      octave (version 2.1.72)
         mkoctfile:   mkoctfile for Octave 2.1.72

      Peter

       

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