text: /*                         S I Z E . C
   * BRL-CAD
   *
   * Copyright (c) 2008-2014 United States Government as represented by
   * the U.S. Army Research Laboratory.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public License
   * version 2.1 as published by the Free Software Foundation.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this file; see the file named COPYING for more
   * information.
   */
  /** @file libged/size.c
   *
   * The size command.
   *
   */
  
  #include "common.h"
  
  #include <stdlib.h>
  #include <ctype.h>
  #include <string.h>
  
  #include "./ged_private.h"
  
  
  int
  ged_size(struct ged *gedp, int argc, const char *argv[])
  {
      /* intentionally double for scan */
      double size;
      static const char *usage = "[s]";
  
      GED_CHECK_DATABASE_OPEN(gedp, GED_ERROR);
      GED_CHECK_VIEW(gedp, GED_ERROR);
      GED_CHECK_ARGC_GT_0(gedp, argc, GED_ERROR);
  
      /* initialize result */
      bu_vls_trunc(gedp->ged_result_str, 0);
  
      /* get view size */
      if (argc == 1) {
  	bu_vls_printf(gedp->ged_result_str, "%g",
  		      gedp->ged_gvp->gv_size * gedp->ged_wdbp->dbip->dbi_base2local);
  	return GED_OK;
      }
  
      /* set view size */
      if (argc == 2) {
  	if (sscanf(argv[1], "%lf", &size) != 1
  	    || size <= 0
  	    || ZERO(size))
  	{
  	    bu_vls_printf(gedp->ged_result_str, "bad size - %s", argv[1]);
  	    return GED_ERROR;
  	}
  
  	gedp->ged_gvp->gv_size = gedp->ged_wdbp->dbip->dbi_local2base * size;
  	if (gedp->ged_gvp->gv_size < RT_MINVIEWSIZE)
  	    gedp->ged_gvp->gv_size = RT_MINVIEWSIZE;
  	gedp->ged_gvp->gv_isize = 1.0 / gedp->ged_gvp->gv_size;
  	gedp->ged_gvp->gv_scale = 0.5 * gedp->ged_gvp->gv_size;
  	ged_view_update(gedp->ged_gvp);
  
  	return GED_OK;
      }
  
      bu_vls_printf(gedp->ged_result_str, "Usage: %s %s", argv[0], usage);
      return GED_ERROR;
  }
  
  
  /*
   * Local Variables:
   * tab-width: 8
   * mode: C
   * indent-tabs-mode: t
   * c-file-style: "stroustrup"
   * End:
   * ex: shiftwidth=4 tabstop=8
   */
  