Geografic-Information-System/display/d.measure/main.c

/****************************************************************************
 *
 * MODULE:       d.measure
 * AUTHOR(S):    James Westervelt and Michael Shapiro 
 *                (CERL - original contributors)
 *               Markus Neteler <neteler itc.it>, 
 *               Reinhard Brunzema <r.brunzema@web.de>, 
 *               Bernhard Reiter <bernhard intevation.de>, 
 *               Huidae Cho <grass4u gmail.com>, 
 *               Eric G. Miller <egm2 jps.net>, 
 *               Glynn Clements <glynn gclements.plus.com>, 
 *               Hamish Bowman <hamish_b yahoo.com>, 
 *               Jan-Oliver Wagner <jan intevation.de>
 * PURPOSE:      interactive line and polygon measurement in display
 * COPYRIGHT:    (C) 1999-2006 by the GRASS Development Team
 *
 *               This program is free software under the GNU General Public
 *               License (>=v2). Read the file COPYING that comes with GRASS
 *               for details.
 *
 *****************************************************************************/
#include <stdlib.h>
#include <grass/gis.h>
#include <grass/display.h>
#include <grass/glocale.h>
#include "local_proto.h"

int main(int argc, char **argv)
{
    struct GModule *module;
    struct
    {
	struct Option *c1;
	struct Option *c2;
	struct Flag *s;
	struct Flag *m;
	struct Flag *k;
    } parm;
    int color1, color2, s_flag, m_flag, k_flag;

    /* Initialize the GIS calls */
    G_gisinit(argv[0]);

    module = G_define_module();
    G_add_keyword(_("display"));
    G_add_keyword(_("geometry"));
    module->description =
	_("Measures the lengths and areas of features drawn "
	  "by the user in the active display frame on the "
	  "graphics monitor.");

    parm.c1 = G_define_option();
    parm.c1->key = "c1";
    parm.c1->description = _("Line color 1");
    parm.c1->type = TYPE_STRING;
    parm.c1->required = NO;
    parm.c1->gisprompt = "old_color,color,color";
    parm.c1->answer = DEFAULT_BG_COLOR;

    parm.c2 = G_define_option();
    parm.c2->key = "c2";
    parm.c2->description = _("Line color 2");
    parm.c2->type = TYPE_STRING;
    parm.c2->required = NO;
    parm.c2->gisprompt = "old_color,color,color";
    parm.c2->answer = DEFAULT_FG_COLOR;

    parm.s = G_define_flag();
    parm.s->key = 's';
    parm.s->description = _("Suppress clear screen");

    parm.m = G_define_flag();
    parm.m->key = 'm';
    parm.m->description = _("Output in meters only");

    parm.k = G_define_flag();
    parm.k->key = 'k';
    parm.k->description = _("Output in kilometers as well");

    if (G_parser(argc, argv))
	exit(EXIT_FAILURE);

    if (R_open_driver() != 0)
	G_fatal_error(_("No graphics device selected"));

    color1 = D_translate_color(parm.c1->answer);
    color2 = D_translate_color(parm.c2->answer);
    s_flag = parm.s->answer;
    m_flag = parm.m->answer;
    k_flag = parm.k->answer;

    measurements(color1, color2, s_flag, m_flag, k_flag);

    R_close_driver();

    exit(EXIT_SUCCESS);
}