code: /*******************************************************************************
   * Copyright (c) 2016 Attila Kovacs <attila[AT]sigmyne.com>.
   * All rights reserved. 
   * 
   * This file is part of crush.
   * 
   *     crush 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.
   * 
   *     crush 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 crush.  If not, see <http://www.gnu.org/licenses/>.
   * 
   * Contributors:
   *     Attila Kovacs <attila[AT]sigmyne.com> - initial API and implementation
   ******************************************************************************/
  
  package crush;
  
  import java.io.Serializable;
  import java.util.Arrays;
  
  
  public class PhaseDependents implements Serializable {
  	/**
  	 * 
  	 */
  	private static final long serialVersionUID = 4030721098714832147L;
  	private String name;
  	private PhaseSet phases;
  	private double[] forPhase, forChannel;
  	
  	public PhaseDependents(PhaseSet owner, String name) {
  		this.name = name;
  		this.phases = owner;
  		forPhase = new double[phases.size()];
  		forChannel = new double[phases.getIntegration().getInstrument().size()];
  		phases.phaseDeps.put(name, this);
  	}
  
  	
  	public String getName() { return name; }
  	
  	public void setName(String value) { this.name = value; }
  	
  	public PhaseSet getPhases() { return phases; }
  	
  	public void clear(final Iterable<? extends Channel> channels) {
  	    clear(channels, 0, forPhase.length);
  	}
  	
  	private void clear(final Iterable<? extends Channel> channels, final int from, final int to) { 
  		for(int i=to; --i >= from; ) {
  			final PhaseData phase = phases.get(i);
  			if(phase != null) phase.dependents -= forPhase[i];
  		}
  		for(final Channel channel : channels) phases.channelParms[channel.index] -= forChannel[channel.index];
  		
  		Arrays.fill(forPhase, from, to, 0.0);
  		Arrays.fill(forChannel, 0.0);
  	}
  	
  	
  	public final void addAsync(final PhaseData phase, final Channel channel, final double dp) {
  		forPhase[phase.index] += dp; 
  		forChannel[channel.index] += dp; 
  	}
  	
  	public final void addAsync(final PhaseData phase, final double dp) { 
  		forPhase[phase.index] += dp; 
  	}
  	
  	public final void addAsync(final Channel channel, final double dp) { 
  		forChannel[channel.index] += dp; 
  	}
  	
  	public void apply(final Iterable<? extends Channel> channels) {
  	    apply(channels, 0, forPhase.length);
  	}
  	
  	public void apply(final Iterable<? extends Channel> channels, final int from, int to) {
  		while(--to >= from) {
  			final PhaseData phase = phases.get(to);
  			if(phase != null) phase.dependents += forPhase[to];
  		}
  		
  		for(final Channel channel : channels) phases.channelParms[channel.index] += forChannel[channel.index];
  		
  	}
  	
  	public double get(final PhaseData phase) { return forPhase[phase.index]; }
  		
  	public double get(final Channel channel) { return forChannel[channel.index]; }
  	
  	
  }
  
  