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	            quad_tree_program.c	
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The Program
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The program "quad_tree_program.c ", developed by Srinivasa Rao Sureddi,  
can provide valid quadrilateral mesh which is devolped by following
Quad_tree decomposition.


For executing the program, please look at the sample files

                quad_tree_program.c <------ Source code
        and     input.sample <------- Sample input file	

Name of the code included with graphics is <------ graphics.c

in the directory

	/k3/sraos/www/751/proj/

All the input parameter deatails are expalined in sample input file
( input.sample ).

TO COMPILE THIS PROGRAM:

1. Copy all the files from this area into a subdirectory, e.g. QUAD
2. cd QUAD
3. Make linux	(assuming you are trying to run this on Linux)
4. Type the command
	ODraw < INFILENAME
5. For seeing the output without graphics output, you can
   a) compiling : cc -Aa -lm quad_tree_program.c
   b) execution : a.out < INFILE > OUTFILE
OUTFILE contains coordinates of nodes which are being devolped.

INPUT FILE  FORMAT

The file "input_sample" explains each entry in an example input file.

REMEMBER
-----------
Use only CCPCs' for running this program " graphics.c "
Or should have the OpenGL libraries installed in your directory.
To set display to some other terminal, use the command	
	export DISPLAY=<terminal-name-or-number>:0.0
This assumes you are using k-shell. 

Note that to run the OPENGL code, you will need to set your
path to the OpenGL libraries. This may be done with the program
"Setup".



What SetUp DOES:
----------------

1. It adds a line to your .profile so that you can access the OpenGL
   libraries.
	export LD_LIBRARY_PATH=/g11/apurva/lxmesa/lib:$LD_LIBRARY_PATH
2. It creates a set of links in your OpenGL directory so that you
   can access the OpenGL libraries.
3. It makes a directory My_Programs in this OpenGL directory for
   you to keep your code.

Read the file Compile.RME in your My_Programs area for further info.