/**
 * @(#) $RCSfile: RobbleWobbleLoop.as,v $ $Revision: 1.2 $ $Date: 2003/02/05 02:30:16 $
 *
 * 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.
 */

/**
 * RobbleWobbleLoop.as is a little loop that will wobble a rotation around a
 * specific angle. This angle can easily be set by a script action in f.i a
 * button. The main thing to notice is that we always set a positive angle,
 * and that we always will choose the shortest distance between two angles.
 * So - the shortest distance from 2 degrees to 358 degrees is -4 degrees -
 * to -2 degrees.
 *
 * The angle should be stored in _level0 - and the name should be the name
 * of the roto-clip + "_angle";
 *
 * @author      Olaf Havnes
 * @version     $Revision: 1.2 $ $Date: 2003/02/05 02:30:16 $
 * @since       SWFIT1.0
 */

// We read our destination angle from _level0:
to_angle = eval ("/:" add _name add "_angle");

// Place the destination angle value inside the first 360 degrees.
while (to_angle < 0) to_angle += 360;
while (to_angle >= 360) to_angle -= 360;

// Place the stored angle value inside the first 360 degrees.
while (from_angle < 0) from_angle += 360;
while (from_angle >= 360) from_angle -= 360;

// Find the SHORTEST distance from the stored value to the destination value.
dist_angle = to_angle - from_angle;
if (dist_angle > 180) dist_angle -= 360;
if (dist_angle < -180) dist_angle += 360;

// Compute the speed based on distance we have to travel.
speed_angle += ac * dist_angle - fr * speed_angle;

// Set the new angle.
from_angle += speed_angle;
_rotation = from_angle;

// We need to set the scale to 100%, since flash for some reason nudges the scale
// slightly for each rotate command.

_xscale = 100;
_yscale = 100;