Torus around a Schwarzschild black hole

System requirements

• You need a graphics card with an NVIDIA GeForce 7900 chip or higher and at least 300MB GPU memory or an equivalent graphics card.
• Qt 4.6 or higher must be installed. → Qt SDK

Installation with Qt Creator

• Start Qt Creator.
• Open Project via: File → Open File or Project... → torus_linux.pro
• Double-click on torus_linux.pro
  
  The Qt Creator should now look like this...
  
• Adjust the TOP_DIR path and save the torus_linux.pro file.
  
  If you expand the Headers, Resources, and Sources directories within the Projects window, it should look like this:
  
  If the .h and .cpp files do not appear, your TOP_DIR variable might be wrong.
• If you have a joystick and the library libjsw installed, you can set HAVE_JOYSTICK = yes.
• Enter "Projects" tab and open "Show Details". If you have more than one Qt version installed, you have to choose Qt 4.6 or higher:
  
• Now you can build the Torus application via: Build → Build Project "torus_linux".
  
  The progress bar shows you, when the build process has finished:
  

Start the application

• Before starting the application, you have to download some material files. A good starting point are the following ones. You should store them e.g. in TOP_DIR/data. (Do a right-click on the links → Save Link As...)
  
  
  • tdistCT_2_0.1_4096x1024.tin.bin
  • tdistCT_2_0.1_4096x1024.tout.bin
  • tdist_2_4096.bg.bin
  • planck_Y1500_16000.bin
  • torus_texture.png
  • eso0932a.jpg (The Milkyway panorama is by ESO/S. Brunier)
  • config.ini
• Open the just downloaded config.ini file with a standard text editor and replace ‹path› by the TOP_DIR/data entry, here e.g. /home/muelleta/Projekte/qtTorus
• Now, return to Qt Creator and start the application by pressing the play button.
  
  
• Open the config file via: File → Load config-file
  
  Loading the lookup tables and the other files may take a few seconds...
  
  When all files are loaded correctly, the red labels in the lower right corner should disappear, otherwise, the following files are missing: BGimg: background image, Timg: torus image, Din: lookup table in, Dout: lookup table out, Dbg: lookup table background, temp: temperature assignment table. Then, check the config.ini file.

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