changed default udgm to calculate success probabilities by distance. the previous behavior of udgm was renamed to "UDGM: Constant Loss"

tools/cooja/config/cooja_applet.config

@@ -2,4 +2,4 @@ se.sics.cooja.GUI.MOTETYPES = se.sics.cooja.motes.DisturberMoteType se.sics.cooj
 se.sics.cooja.GUI.PLUGINS = se.sics.cooja.plugins.Visualizer se.sics.cooja.plugins.LogListener se.sics.cooja.plugins.MoteInformation se.sics.cooja.plugins.MoteInterfaceViewer se.sics.cooja.plugins.VariableWatcher se.sics.cooja.plugins.EventListener se.sics.cooja.plugins.RadioLogger se.sics.cooja.mspmote.plugins.MspCodeWatcher se.sics.cooja.mspmote.plugins.MspStackWatcher se.sics.cooja.mspmote.plugins.MspCycleWatcher
 se.sics.cooja.GUI.IP_DISTRIBUTORS = se.sics.cooja.ipdistributors.RandomIPDistributor se.sics.cooja.ipdistributors.SpatialIPDistributor se.sics.cooja.ipdistributors.IdIPDistributor
 se.sics.cooja.GUI.POSITIONERS = se.sics.cooja.positioners.RandomPositioner se.sics.cooja.positioners.LinearPositioner se.sics.cooja.positioners.EllipsePositioner se.sics.cooja.positioners.ManualPositioner
-se.sics.cooja.GUI.RADIOMEDIUMS = se.sics.cooja.radiomediums.UDGM se.sics.cooja.radiomediums.DirectedGraphMedium se.sics.mrm.MRM se.sics.cooja.radiomediums.SilentRadioMedium
+se.sics.cooja.GUI.RADIOMEDIUMS = se.sics.cooja.radiomediums.UDGM se.sics.cooja.radiomediums.UDGMConstantLoss se.sics.cooja.radiomediums.DirectedGraphMedium se.sics.mrm.MRM se.sics.cooja.radiomediums.SilentRadioMedium

tools/cooja/config/cooja_default.config

@@ -6,4 +6,4 @@ se.sics.cooja.GUI.MOTETYPES = se.sics.cooja.motes.ImportAppMoteType se.sics.cooj
 se.sics.cooja.GUI.PLUGINS = se.sics.cooja.plugins.Visualizer se.sics.cooja.plugins.LogListener se.sics.cooja.plugins.TimeLine se.sics.cooja.plugins.MoteInformation se.sics.cooja.plugins.MoteInterfaceViewer se.sics.cooja.plugins.VariableWatcher se.sics.cooja.plugins.EventListener se.sics.cooja.plugins.RadioLogger se.sics.cooja.plugins.ScriptRunner se.sics.cooja.plugins.Notes
 se.sics.cooja.GUI.IP_DISTRIBUTORS = se.sics.cooja.ipdistributors.RandomIPDistributor se.sics.cooja.ipdistributors.SpatialIPDistributor se.sics.cooja.ipdistributors.IdIPDistributor
 se.sics.cooja.GUI.POSITIONERS = se.sics.cooja.positioners.RandomPositioner se.sics.cooja.positioners.LinearPositioner se.sics.cooja.positioners.EllipsePositioner se.sics.cooja.positioners.ManualPositioner
-se.sics.cooja.GUI.RADIOMEDIUMS = se.sics.cooja.radiomediums.UDGM se.sics.cooja.radiomediums.DirectedGraphMedium se.sics.cooja.radiomediums.SilentRadioMedium
+se.sics.cooja.GUI.RADIOMEDIUMS = se.sics.cooja.radiomediums.UDGM se.sics.cooja.radiomediums.UDGMConstantLoss se.sics.cooja.radiomediums.DirectedGraphMedium se.sics.cooja.radiomediums.SilentRadioMedium

tools/cooja/java/se/sics/cooja/plugins/skins/UDGMVisualizerSkin.java

@@ -26,12 +26,13 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: UDGMVisualizerSkin.java,v 1.10 2010/02/03 15:49:25 fros4943 Exp $
+ * $Id: UDGMVisualizerSkin.java,v 1.11 2010/09/06 12:00:46 fros4943 Exp $
  */
 
 package se.sics.cooja.plugins.skins;
 
 import java.awt.Color;
+import java.awt.FontMetrics;
 import java.awt.Graphics;
 import java.awt.Point;
 import java.awt.event.MouseAdapter;
@@ -336,6 +337,28 @@ public class UDGMVisualizerSkin implements VisualizerSkin {
         y - translatedTransmissionMax.y,
         2 * translatedTransmissionMax.x,
         2 * translatedTransmissionMax.y);
+
+    
+    FontMetrics fm = g.getFontMetrics();
+    g.setColor(Color.BLACK);
+
+    /* Print transmission success probabilities */
+    for (Mote m: simulation.getMotes()) {
+    	if (m == selectedMote) {
+    		continue;
+    	}
+    	double prob = 
+    		((UDGM) simulation.getRadioMedium()).getSuccessProbability(selectedRadio, m.getInterfaces().getRadio());
+    	if (prob == 0.0d) {
+    		continue;
+    	}
+    	String msg = (double)(((int)(1000*prob))/10.0) + "%";
+    	Position pos = m.getInterfaces().getPosition();
+    	Point pixel = visualizer.transformPositionToPixel(pos);
+    	int msgWidth = fm.stringWidth(msg);
+    	g.drawString(msg, pixel.x - msgWidth/2, pixel.y + 2*Visualizer.MOTE_RADIUS + 3);
+    }
+    
   }
 
   public void paintAfterMotes(Graphics g) {

tools/cooja/java/se/sics/cooja/radiomediums/UDGM.java

@@ -26,7 +26,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: UDGM.java,v 1.30 2010/02/03 15:49:25 fros4943 Exp $
+ * $Id: UDGM.java,v 1.31 2010/09/06 12:00:46 fros4943 Exp $
  */
 
 package se.sics.cooja.radiomediums;
@@ -80,7 +80,7 @@ import se.sics.cooja.radiomediums.DirectedGraphMedium.DestinationRadio;
  * @see UDGMVisualizerSkin
  * @author Fredrik Osterlind
  */
-@ClassDescription("Unit Disk Graph Medium (UDGM)")
+@ClassDescription("Unit Disk Graph Medium (UDGM): Distance Loss")
 public class UDGM extends AbstractRadioMedium {
   private static Logger logger = Logger.getLogger(UDGM.class);
 
@@ -89,14 +89,12 @@ public class UDGM extends AbstractRadioMedium {
   public double TRANSMITTING_RANGE = 50; /* Transmission range. */
   public double INTERFERENCE_RANGE = 100; /* Interference range. Ignored if below transmission range. */
 
-  private Simulation simulation;
   private DirectedGraphMedium dgrm; /* Used only for efficient destination lookup */
 
   private Random random = null;
 
   public UDGM(Simulation simulation) {
     super(simulation);
-    this.simulation = simulation;
     random = simulation.getRandomGenerator();
     dgrm = new DirectedGraphMedium() {
       protected void analyzeEdges() {
@@ -166,7 +164,7 @@ public class UDGM extends AbstractRadioMedium {
     RadioConnection newConnection = new RadioConnection(sender);
 
     /* Fail radio transmission randomly - no radios will hear this transmission */
-    if (SUCCESS_RATIO_TX < 1.0 && random.nextDouble() > SUCCESS_RATIO_TX) {
+    if (getTxSuccessProbability(sender) < 1.0 && random.nextDouble() > getTxSuccessProbability(sender)) {
       return newConnection;
     }
 
@@ -222,7 +220,7 @@ public class UDGM extends AbstractRadioMedium {
         } else if (recv.isTransmitting()) {
           newConnection.addInterfered(recv);
         } else if (recv.isReceiving() ||
-            (SUCCESS_RATIO_RX < 1.0 && random.nextDouble() > SUCCESS_RATIO_RX)) {
+            (random.nextDouble() > getRxSuccessProbability(sender, recv))) {
           /* Was receiving, or reception failed: start interfering */
           newConnection.addInterfered(recv);
           recv.interfereAnyReception();
@@ -247,6 +245,28 @@ public class UDGM extends AbstractRadioMedium {
 
     return newConnection;
   }
+  
+  public double getSuccessProbability(Radio source, Radio dest) {
+  	return getTxSuccessProbability(source) * getRxSuccessProbability(source, dest);
+  }
+  public double getTxSuccessProbability(Radio source) {
+    return SUCCESS_RATIO_TX;
+  }
+  public double getRxSuccessProbability(Radio source, Radio dest) {
+  	double distance = source.getPosition().getDistanceTo(dest.getPosition());
+    double distanceSquared = Math.pow(distance,2.0);
+    double distanceMax = TRANSMITTING_RANGE * 
+    ((double) source.getCurrentOutputPowerIndicator() / (double) source.getOutputPowerIndicatorMax());
+    if (distanceMax == 0.0) {
+      return 0.0;
+    }
+    double distanceMaxSquared = Math.pow(distanceMax,2.0);
+    double ratio = distanceSquared / distanceMaxSquared;
+    if (ratio > 1.0) {
+    	return 0.0;
+    }
+    return 1.0 - ratio*(1.0-SUCCESS_RATIO_RX);
+  }
 
   public void updateSignalStrengths() {
     /* Override: uses distance as signal strength factor */

tools/cooja/java/se/sics/cooja/radiomediums/UDGMConstantLoss.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2010, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: UDGMConstantLoss.java,v 1.1 2010/09/06 12:00:46 fros4943 Exp $
+ */
+
+package se.sics.cooja.radiomediums;
+
+import org.apache.log4j.Logger;
+
+import se.sics.cooja.ClassDescription;
+import se.sics.cooja.Simulation;
+import se.sics.cooja.interfaces.Radio;
+
+/**
+ * UDGM with constant loss probablity.
+ *  
+ * @see UDGM
+ * @author Fredrik Osterlind
+ */
+@ClassDescription("UDGM: Constant Loss")
+public class UDGMConstantLoss extends UDGM {
+  private static Logger logger = Logger.getLogger(UDGMConstantLoss.class);
+
+  public UDGMConstantLoss(Simulation simulation) {
+    super(simulation);
+  }
+
+  public double getRxSuccessProbability(Radio source, Radio dest) {
+    double distance = source.getPosition().getDistanceTo(dest.getPosition());
+    double moteTransmissionRange = TRANSMITTING_RANGE
+    * ((double) source.getCurrentOutputPowerIndicator() / (double) source.getOutputPowerIndicatorMax());
+    if (distance > moteTransmissionRange) {
+    	return 0.0d;
+    }
+  	return SUCCESS_RATIO_RX;
+  }
+
+}