/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: CalculateForcesStageWorker.java
* Written by Team 7: Felix Schmidt
*
* This code has been developed at the Karlsruhe Institute of Technology (KIT), Germany,
* as part of the course "Multicore Programming in Practice: Tools, Models, and Languages".
* Contact instructor: Dr. Victor Pankratius (pankratius@ipd.uka.de)
*
* Copyright (c) 2010 Sun Microsystems and Static Free Software
*
* Electric(tm) 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.
*
* Electric(tm) 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 Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool.placement.forceDirected2.forceDirected.staged;
import com.sun.electric.database.geometry.GenMath.MutableInteger;
import com.sun.electric.tool.placement.PlacementFrame.PlacementNetwork;
import com.sun.electric.tool.placement.PlacementFrame.PlacementNode;
import com.sun.electric.tool.placement.PlacementFrame.PlacementPort;
import com.sun.electric.tool.placement.forceDirected2.AdditionalNodeData;
import com.sun.electric.tool.placement.forceDirected2.PlacementForceDirectedStaged;
import com.sun.electric.tool.placement.forceDirected2.forceDirected.SpringForce;
import com.sun.electric.tool.placement.forceDirected2.forceDirected.util.CheckboardingField;
import com.sun.electric.tool.placement.forceDirected2.forceDirected.util.Force2D;
import com.sun.electric.tool.placement.forceDirected2.utils.concurrent.EmptyException;
import com.sun.electric.tool.placement.forceDirected2.utils.concurrent.StageWorker;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Worker to calculate the forces
*/
public class CalculateForcesStageWorker extends StageWorker {
protected Map<PlacementNode, Map<PlacementNode, MutableInteger>> connectivityMap;
protected List<PlacementNetwork> allNetworks;
/**
* Constructor
*
* @param connectivity
* @param allNetworks
*/
public CalculateForcesStageWorker(Map<PlacementNode, Map<PlacementNode, MutableInteger>> connectivity, List<PlacementNetwork> allNetworks) {
this.connectivityMap = connectivity;
this.allNetworks = allNetworks;
}
/**
*
* @param node
* @return
*/
private Force2D calculateForces(PlacementNode node) {
Force2D result = new Force2D();
// Map<PlacementNode, MutableInteger> map = connectivityMap.get(node);
boolean newList = false;
AdditionalNodeData data = PlacementForceDirectedStaged.getNodeData().get(node);
if (data.getNetworks() == null) {
data.setNetworks(new HashMap<PlacementNetwork, PlacementPort>());
newList = true;
}
if (newList) {
for (PlacementNetwork network : this.allNetworks) {
for (PlacementPort port : network.getPortsOnNet()) {
if (node.equals(port.getPlacementNode())) {
if (newList) {
data.getNetworks().put(network, port);
}
}
}
}
}
result = new Force2D();
for (PlacementNetwork network : data.getNetworks().keySet()) {
for (PlacementPort port : network.getPortsOnNet()) {
if (node != port.getPlacementNode()) {
result = result.add(SpringForce.calculate(data.getNetworks().get(network), port, 1, 0));
}
}
}
return result;
}
// private int getMin(Force2D[] forces) {
// int result = -1;
// Force2D min = null;
// int i = 0;
// for (Force2D force : forces) {
// if (result == -1) {
// min = force;
// result = i;
// } else {
// if (force.getLength() < min.getLength()) {
// min = force;
// result = i;
// }
// }
// i++;
// }
// return result;
// }
/**
* run method
*/
public void run() {
while (!this.abort.booleanValue()) {
try {
PlacementDTO data = this.stage.getInput(this).get();
List<CheckboardingField> fields = data.getFieldsList();
if (fields != null) {
for (CheckboardingField field : fields) {
if ((field != null) && (field.getNode() != null)) {
Force2D force = this.calculateForces(field.getNode());
data.getForces().put(field.getNode(), force);
}
}
}
this.stage.sendToNextStage(data);
} catch (EmptyException ex) {
Thread.yield();
}
}
}
}