/*
 * cameo.c - Toolpath adaptation and machine control
 *
 * Written 2010 by Werner Almesberger
 * Copyright 2010 Werner Almesberger
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */


#include <stdlib.h>
#include <stdio.h>
#include <assert.h>

#include "path.h"
#include "gnuplot.h"


static void usage(const char *name)
{
	fprintf(stderr, "usage: %s r_mm [in.gnuplot [out.gnuplot]]\n",
	    name);
	exit(1);
}


int main(int argc, char **argv)
{
	char *in = NULL, *out = NULL;
	double r;
	struct path *paths;

	switch (argc) {
	case 4:
		out = argv[3];
		/* fall through */
	case 3:
		in = argv[2];
		/* fall through */
	case 2:
		r = atof(argv[1]);
		break;
	default:
		usage(*argv);
	}


/*
 * To do:
 * - auto-detect orientation
 * - handle multiple paths
 * - instead of reversing the path, reverse the handedness
 */
	paths = gnuplot_read(in, r);
	assert(!paths->next); /* we don't handle this yet */
	paths = path_reverse(paths);
	paths = path_offset(paths, 1);
	gnuplot_write(out, paths);
	return 0;
}