This is a library for Boolean operations on polygons for Lua. It is based on
the GPC library written by Alan Murta and available at
	https://github.com/rickbrew/GeneralPolygonClipper

To build the library and run a simple test, just do make.
If Lua is not installed in /usr/local, tell make:
	make LUA_TOPDIR=/var/tmp/lhf/lua-5.4.7/install

To install the library where Lua can find it, use a variant of these:
	make install
	sudo make install
	sudo make install LIBDIR=/usr/local/lib/lua/5.4

For detailed installation instructions, see
	https://www.tecgraf.puc-rio.br/~lhf/ftp/lua/install.html

The library is simple and intuitive; see the summary below.
Read test.lua to see the library in action.
Display or print test.ps, which is the output of the test.

This code is hereby placed in the public domain and also under the MIT license.

Please send comments, suggestions, and bug reports to lhf@tecgraf.puc-rio.br .

gpc library:
__add(p,q)	__sub(p,q)	get(p,[c,[i]])	strip(p)
__mul(p,q)	add(p,c,[hole])	new()		version
__pow(p,q)	clip(p,q,op)	read(p,file)	write(p,file)
