These are some examples for Mesa under OpenStep. The code to write windows in this directory is heavily based on the original code by Pascal Thibaudeau (pascal@galileo.slip.u-bordeaux.fr) for NeXTStep 3.3. Look in the NeXT directory for his code. This code now uses the new 2.0 feature to generate bitmaps which are in the correct orientation for an NSBitmapImageRep. These programs are (with the exception of cone_ball) all taken from the 'book' directory which contains the examples to be found in the OpenGL programming guide. If you look in that directory you will find a NOTES file describing the compatibility of those files with Mesa. I have ported quite a number of the simple examples from this directory as doing so is very easy. Under OpenStep I decided to collect all the rendering code together into one Objective C file (generic.m). This makes porting code from the book directory very simple. To port a piece of simple code declare two integers, gl_width and gl_height which are set to the size of the image. Then add a function called 'render_image' which calls the init, reshape and display functions in that order. This may then be linked with generic.m to produce a running version of the code under OpenStep. For a good example of how this is done then take a look at the end of nurbs.c as compared to ../book/nurbs.c from which it was ported. This will not work for the more complex examples such as anything which has user interaction, but it should give you a starting point to rendering and displaying scenes under OpenStep. The 'MesaView' directory contains the source to a simple application I wrote to play around with Mesa. It generates a random surface in a window and lets you change the viewpoint by zooming, spinning and rotating round it. The code is not very well written, but does demonstrate a few nice things such as using the projection and PostScript functions directly to draw a wire frame whilst rotating the shape. Some people might find it interesting to look at so I've included it here. -Pete French. (pete@ohm.york.ac.uk) 14/11/96
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.
