/*
 * Copyright (C) 2003, 2004 Jason Bevins (original libnoise code)
 * Copyright  2010 Thomas J. Hodge (java port of libnoise)
 * 
 * This file is part of libnoiseforjava.
 * 
 * libnoiseforjava is a Java port of the C++ library libnoise, which may be found at 
 * http://libnoise.sourceforge.net/.  libnoise was developed by Jason Bevins, who may be 
 * contacted at jlbezigvins@gmzigail.com (for great email, take off every 'zig').
 * Porting to Java was done by Thomas Hodge, who may be contacted at
 * libnoisezagforjava@gzagmail.com (remove every 'zag').
 * 
 * libnoiseforjava 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 3 of the License, or (at your option) any later version.
 * 
 * libnoiseforjava 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
 * libnoiseforjava.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

package libnoiseforjava.module;

import libnoiseforjava.exception.ExceptionInvalidParam;

public class Add extends ModuleBase
{
   /// Noise module that outputs the additive value of the output value from
   /// two source modules.
   ///
   /// This noise module requires two source modules.

   public Add (ModuleBase sourceModuleOne, ModuleBase sourceModuleTwo) throws ExceptionInvalidParam
   {
      super(2);
      setSourceModule(0, sourceModuleOne);
      setSourceModule(1, sourceModuleTwo);
   }

   public double getValue (double x, double y, double z)
   {
      assert (sourceModules[0] != null);
      assert (sourceModules[1] != null);

      return sourceModules[0].getValue (x, y, z)
      + sourceModules[1].getValue (x, y, z);
   }

}