/**
 * @(#) $RCSfile: TrigonometryTableLookup.as,v $ $Revision: 1.4 $ $Date: 2003/01/29 16:40:19 $
 *
 * Copyright 2003 Orgdot AS. All Rights Reserved.
 * http://dev.swfit.com
 *
 * 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.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/**
 * This script will return a positive value for an angle (in degrees) based on
 * input values for cos_val and sin_val (that may be larger than 1). See 
 * TrigonometryTable.as for details on the atan values.
 * 
 *
 * @author      Olaf Havnes
 * @version     $Revision: 1.4 $ $Date: 2003/01/29 16:40:19 $
 * @since       SWFIT1.0
 */


atan = 0;
if (cos_val < 0)
{
    if (sin_val < 0)
    {
        if (cos_val < sin_val)
        {
            t00 = int (100 * sin_val / cos_val);
            atan = 180 + eval ("/:ATAN_" add t00);
        }
        else
        {
            t00 = int (100 * cos_val / sin_val);
            atan = 180 + (90 - eval ("/:ATAN_" add t00));
        }
    }
    else if (sin_val > 0)
    {
        cos_val = - cos_val;
        if (cos_val < sin_val)
        {
            t00 = int (100 * cos_val / sin_val);
            atan = 90 + eval ("/:ATAN_" add t00);
        }
        else
        {
            t00 = int (100 * sin_val / cos_val);
            atan = 90 + (90 - eval ("/:ATAN_" add t00));
        }
    }
    else atan = 180;
}
else if (cos_val > 0)
{
    if (sin_val > 0)
    {
        if (cos_val > sin_val)
        {
            t00 = int (100 * sin_val / cos_val);
            atan = eval ("/:ATAN_" add t00);
        }
        else
        {
            t00 = int (100 * cos_val / sin_val);
            atan = 90 - eval ("/:ATAN_" add t00);
        }
    }
    else if (sin_val < 0)
    {
        sin_val = - sin_val;
        if (cos_val < sin_val)
        {
            t00 = int (100 * cos_val / sin_val);
            atan = 270 + eval ("/:ATAN_" add t00);
        }
        else
        {
            t00 = int (100 * sin_val / cos_val);
            atan = 270 + (90 - eval ("/:ATAN_" add t00));
        }
    }
    else atan = 0;
}
else
{
    if (sin_val < 0) atan = 270;
    else if (sin_val > 0) atan = 90;
}