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OpenGL and C# - Part 1

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  3 months ago

  by AmirMe

  Amir Mehler

  Tel Aviv, Israel

  Joined 3 months ago

  Hi All, I ran into some trouble with the thread above, but, I found a solution... Aperantly, while using Visual Studio 2008 such a cross thread action is considered unsafe. Anyway, the "Invoke" method can take care of that with just a few lines of code:

  private void OpenGL_Start() { if( this.view.InvokeRequired) { ThreadStart aDelegate = new ThreadStart(this.view.Refresh); for( ; ; ) { Thread.Sleep(1000); if( !thrOpenGL.IsAlive ) return; this.Invoke(aDelegate); } } else { for( ; ; ) { // infinity loop for rendering Thread.Sleep(1000); this.view.Refresh(); } } }

  The 'if' statement check to see if the action is done on the current thread or not and uses the "invoke" when necessary.

  I hope I saved someone the 60 minutes it took me... ;-)

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  3 months ago

  by AmirMe

  Amir Mehler

  Tel Aviv, Israel

  Joined 3 months ago

  (sorry for not marking the code as code in the comment above...)

  Hi Johnny, Still there? I know it's been a while since 2003... But if you are still around, or anyone else, I have a question:

  How do I draw two separate sets of drawing in parallel? I want to draw an Anaglyph. Let's say, a blue cube and a red cude. each in a different color and at a slightly different angle acording to two POV (points of view).

  Any suggestions?

  All the best. Amir

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  3 months ago

  by AmirMe

  Amir Mehler

  Tel Aviv, Israel

  Joined 3 months ago

  private void OpenGL_Start() { if( this.view.InvokeRequired) { ThreadStart aDelegate = new ThreadStart(this.view.Refresh); for( ; ; ) { Thread.Sleep(1000); if( !thrOpenGL.IsAlive ) return; this.Invoke(aDelegate); } } else { for( ; ; ) { // infinity loop for rendering Thread.Sleep(1000); this.view.Refresh(); } } }

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  2 months ago

  by silverblimp

  creamy goodness

  helsinky, Finland

  Joined 2 months ago

  the solution i know is:

      CheckForIllegalCrossThreadCalls = false;
  

  which is simpler

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  2 months ago

  by silverblimp

  creamy goodness

  helsinky, Finland

  Joined 2 months ago

  the solution i know is:

      CheckForIllegalCrossThreadCalls = false;
  

  which is simpler

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  2 months ago

  by dancechmur

  Mariusz Chmurzyński

  Czestochowa, Poland

  Joined 2 months ago

  First of all there is no csgl-base.dll in a package csgl.dll.zip downloaded from project site. Secound of all can anybody tell me why it doesn't work? Sometimes I have to change widnow size to see the scene, sometimes it never showes up :| why? What I'm doing wrong? uffff F1 F1 F1 HELP!

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  2 months ago

  by dancechmur

  Mariusz Chmurzyński

  Czestochowa, Poland

  Joined 2 months ago

  Strange, I've added a menu in the top of the window and now everything works perfectly :) thx for the tutorial. Without it I would never start. We Polish used to say "The first step is the hardest"

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  1 month ago

  by wuseltum

  Joe Banana

  Munich, Germany

  Joined 1 month ago

  Thanks for the tutorial, unfortunately it does not work for me. All I see is white background with a red cross of which I don't know where it comes from... Thanks for any help...

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