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-
-
- Written by Ronald Joe Record (rr@sco.com) 05 Apr 1993
-
- INTRO
- -----
-
- The idea here is to calculate and display aggregating particles.
- In order to accomplish this, a modified random walk algorithm is used.
- Initial particles are "seeded" at the "bottom" or the "sea". Particles
- are then "dropped" randomly from above. When a particle comes within a
- pixel of an already existent particle, it "sticks". After N particles
- have "stuck", the color is incremented. Thus, color indicates "age".
-
- ACKNOWLEDGEMENTS
- ----------------
-
- The algorithm was derived from lectures given by Dietmar Saupe at the
- University of California at Santa Cruz. Assistance with colormaps and
- spinning color wheels and X was gleaned from Hiram Clawson and Stacey Campbell.
-
- BUILD
- -----
-
- To build the coral binary, either use the Imakefile or the sample makefile,
- Makefile.std. If your system doesn't support prototypes, uncomment the
- PROTODEFINE line of the Imakefile.
-
- After modifying the Imakefile appropriately, either use "xmkmf" or "imake"
- to create a Makefile. Then just type "make" to compile coral.
-
- The manual page can be formatted by typing "nroff -man coral.man > coral.6X".
-
- INSTALL
- -------
-
- To install coral, copy the coral binary to the desired location (the sample
- makefile puts it in /usr/games/X11)
- Copy the formatted man page to wherever you keep your local doc (i use
- /usr/games/X11/doc for games and imaging software), then add that location
- to your MANPATH.
-
- TEST
- ----
-
- You can test coral by just invoking it with no arguments. It should display
- a 512x480 image. Some workstations may be slow to calculate and display the
- coral growth as there are many calculations involved.
-
- Some "interesting" ways to run coral are as follows :
- % coral -F -n 10 -d
- (use the full screen, calculate 10 maps in demo mode)
- % coral -R
- (display on the root window)
- % coral -o coralgrowth.ppm
- (calculate and display with default parameters and save the resulting image
- as a PPM file called coralgrowth.ppm. this can be viewed later using xv or
- any PPM viewing utility)
-
- Ideas, comments, additions, deletions, suggestions, bug reports, code review,...
- e-mail Ronald Record at rr@sco.com or ...uunet!sco!rr.
-
-