/*
 * slicer.c - Generate slices
 *
 * Written 2015 by Werner Almesberger
 * Copyright 2015 by 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 <unistd.h>

#include "slice.h"
#include "stl.h"


static void usage(const char *name)
{
	fprintf(stderr,
"usage: %s [-b distance] [-z distance] [file.stl]\n"
"  -b distance    draw a box at the specified distance around the object\n"
"                 (default: do not draw a box)\n"
"  -z distance    duplicate layers if distance to next lower is larger than\n"
"                 specified (default: do not insert intermediate layers\n"
    , name);
	exit(1);
}


int main(int argc, char **argv)
{
	float box = 0;
	float z_step = 0;
	int c;

	slice_init();

	while ((c = getopt(argc, argv, "b:z:")) != EOF)
		switch (c) {
		case 'b':
			box = atof(optarg);
			if (!box)
				usage(*argv);
			break;
		case 'z':
			z_step = atof(optarg);
			if (!z_step)
				usage(*argv);
			break;
		default:
			usage(*argv);
		}

	switch (argc-optind) {
	case 0:
		stl_load_file(stdin, slice);
		break;
	case 1:
		stl_load(argv[optind], slice);
		break;
	default:
		usage(*argv);
	}

	if (z_step)
		slice_intermediate(z_step);
	slice_dump(box);

	return 0;
}