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INTRODUCTION NuOpenGLCubeDemo is a simple example of using low-level OpenGL in Nu to draw and animate a cube. This demo calls older OpenGL primitives, and doesn't use a modern OpenGL architecture. I wouldn't recommend using this approach for real applications, but I was mostly interested to see how much of the application I could implement in Nu. It turns out that just about everything could be implemented in Nu except for a 1-line function at initialization. Nice job Tim and libffi! You can have fun with the application using the Nu Console. Here are a few things to try: ($view startAnimation) ($view stopAnimation) ($view resetCameraAndUpdateProjection) You can experiment with changing the velocity and acceleration vectors when animating the cube: ;; Use indexes 0,1,2 to explore ;; and set X/Y/Z parameters ($rVel valueAtIndex:0) ;; X velocity ($rVel setValue:0.5 atIndex:0) ($rAccel setValue:0.004 atIndex:0) ;; acceleration You can also play with the camera settings like the aperture, but not all of these setting have global variables so you'll have to get at them using the view: (($view camera) setAperture:80.0) When the main application view has the focus, you can hit the space bar to toggle the animation on and off. Drag the cube around in real-time to rotate it. Right-click and drag to pan the camera. Option-click and drag (or use your scroll wheel, if you have one) to move the dolly to zoom in and out. If you lose the cube while zooming and panning, hit 'r' to reset the camera. You can find the latest version of NuOpenGLCubeDemo at http://github.com/itfrombit/nuopenglcubedemo This application was adapted from Apple's Cocoa OpenGL sample code. You can find the original version at http://developer.apple.com/samplecode/CocoaGL/index.html The shell of the Nu application was adapted from Tim Burks' Benwanu example in the Nu distribution. REQUIREMENTS NuOpenGLCubeDemo requires Nu, nuke and the Apple Developer Tools. It was written and tested on OS X 10.5.2. You can find out more about Nu at http://programming.nu You can get Nu from the git repository at http://github.com/timburks/nu INSTALLATION Build the NuOpenGLCubeDemo by typing "nuke" in the top-level NuOpenGLCubeDemo directory. You can run the resulting application from the same top-level directory. AUTHOR NuOpenGLCubeDemo was written by Jeff Buck.