minor fixes. Updated libraries

src/main/java/hep/dataforge/trapping/ElectronTrappingSimulator.java

@@ -4,7 +4,10 @@
  */
 package hep.dataforge.trapping;
 
-import java.util.ArrayList;
+import java.io.PrintStream;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 import org.apache.commons.math3.geometry.euclidean.threed.Rotation;
 import org.apache.commons.math3.geometry.euclidean.threed.SphericalCoordinates;
 import org.apache.commons.math3.geometry.euclidean.threed.Vector3D;
@@ -52,15 +55,14 @@ public class ElectronTrappingSimulator {
 
         if (initTheta < this.thetaPinch) {
             if (generator.heads()) {
-                return new SimulaionResult(EndState.PASS, initEnergy, initTheta, 0);
+                return new SimulaionResult(EndState.PASS, initEnergy, initTheta, initTheta, 0);
             } else {
-                return new SimulaionResult(EndState.REJECTED, initEnergy, initTheta, 0);
+                return new SimulaionResult(EndState.REJECTED, initEnergy, initTheta, initTheta, 0);
             }
-        } else if(initTheta<this.thetaTransport){
+        } else if (initTheta < this.thetaTransport) {
-                return new SimulaionResult(EndState.REJECTED, initEnergy, initTheta, 0);            
+            return new SimulaionResult(EndState.REJECTED, initEnergy, initTheta, initTheta, 0);
         }
 
-
         double E = initEnergy;
         double theta = initTheta;
         int colNum = 0;
@@ -73,7 +75,6 @@ public class ElectronTrappingSimulator {
             DoubleValue dE = new DoubleValue(0);
             DoubleValue dTheta = new DoubleValue(0);
 
-
             //Вычисляем сечения и нормируем их на полное сечение
             double sigmaIon = Scatter.sigmaion(E);
             double sigmaEl = Scatter.sigmael(E);
@@ -130,7 +131,11 @@ public class ElectronTrappingSimulator {
                 state = EndState.LOWENERGY;
             }
         }
-        return new SimulaionResult(state, E, theta, colNum);
+        SimulaionResult res = new SimulaionResult(state, E, theta, initTheta, colNum);
+        if (state == EndState.ACCEPTED) {
+            printOne(System.out, res);
+        }
+        return res;
 
     }
 
@@ -145,7 +150,7 @@ public class ElectronTrappingSimulator {
         //Генерируем случайный фи
         double phi = generator.next() * 2 * Math.PI;
         //Создаем начальный вектор в сферических координатах
-        SphericalCoordinates init = new SphericalCoordinates(1, 0, theta+dTheta);
+        SphericalCoordinates init = new SphericalCoordinates(1, 0, theta + dTheta);
         // Задаем вращение относительно оси, перпендикулярной исходному вектору 
         SphericalCoordinates rotate = new SphericalCoordinates(1, 0, theta);
         // поворачиваем исходный вектор на dTheta
@@ -155,7 +160,6 @@ public class ElectronTrappingSimulator {
 
         //      assert Vector3D.angle(result, rotate.getCartesian()) == dTheta;
         return Math.acos(result.getZ());
-
     }
 
     /**
@@ -165,17 +169,16 @@ public class ElectronTrappingSimulator {
      * @param num
      * @return
      */
-    public ArrayList<SimulaionResult> simulateAll(double E, int num) {
+    public List<SimulaionResult> simulateAll(double E, int num) {
-        ArrayList<SimulaionResult> res = new ArrayList();
-        double theta;
-
         System.out.printf("%nStarting sumulation with initial energy %g and %d electrons.%n%n", E, num);
-        for (int i = 0; i < num; i++) {
+
-//            System.out.printf("Running electron number %d", i);
+        return Stream.generate(() -> getRandomTheta()).limit(num).parallel()
-            theta = this.getRandomTheta();
+                .map(theta -> simulateOne(E, theta))
-            res.add(this.simulateOne(E, theta));
+                .collect(Collectors.toList());
     }
-        return res;
+
+    public static void printOne(PrintStream out, SimulaionResult res) {
+        out.printf("%g\t%g\t%g\t%d\t%s%n", res.E, res.theta * 180 / Math.PI, res.initTheta * 180 / Math.PI, res.collisionNumber, res.state.toString());
     }
 
     private double normalizeTheta(double theta) {
@@ -201,14 +204,16 @@ public class ElectronTrappingSimulator {
 
     public class SimulaionResult {
 
-        public SimulaionResult(EndState state, double E, double theta, int collisionNumber) {
+        public SimulaionResult(EndState state, double E, double theta, double initTheta, int collisionNumber) {
             this.state = state;
             this.E = E;
             this.theta = theta;
+            this.initTheta = initTheta;
             this.collisionNumber = collisionNumber;
         }
         public EndState state;
         public double E;
+        public double initTheta;
         public double theta;
         public int collisionNumber;
     }

src/main/java/hep/dataforge/trapping/Trapping.java

@@ -2,9 +2,8 @@ package hep.dataforge.trapping;
 
 import java.io.File;
 import java.io.FileNotFoundException;
-import java.io.PrintWriter;
+import java.io.PrintStream;
-import java.util.ArrayList;
+import java.util.List;
-import java.util.Iterator;
 
 /**
  * Hello world!
@@ -13,10 +12,10 @@ import java.util.Iterator;
 public class Trapping {
 
     public static void main(String[] args) throws FileNotFoundException {
-        PrintWriter out = null;
+        PrintStream out = null;
         if ((args.length > 0) && (args[0] != null)) {
             File file = new File(args[0]);
-            out = new PrintWriter(file);
+            out = new PrintStream(file);
         } else {
             
         }
@@ -33,18 +32,15 @@ public class Trapping {
         int rejected = 0;
         int lowE = 0;
 
-        ArrayList<ElectronTrappingSimulator.SimulaionResult> results = simulator.simulateAll(E, 50000);
+        List<ElectronTrappingSimulator.SimulaionResult> results = simulator.simulateAll(E, 500000);
-
-        for (Iterator<ElectronTrappingSimulator.SimulaionResult> it = results.iterator(); it.hasNext();) {
-            ElectronTrappingSimulator.SimulaionResult res = it.next();
 
+        for (ElectronTrappingSimulator.SimulaionResult res : results) {
             if (out != null) {
-                out.printf("%g\t%g\t%d\t%s%n", res.E, res.theta * 180 / Math.PI, res.collisionNumber, res.state.toString());
+                ElectronTrappingSimulator.printOne(System.out, res);
             }
             switch (res.state) {
-
                 case ACCEPTED:
-                    System.out.printf("%g\t%g\t%d\t%s%n", res.E, res.theta * 180 / Math.PI, res.collisionNumber, res.state.toString());
+//                    ElectronTrappingSimulator.printOne(System.out, res);
                     accepted++;
                     break;
                 case LOWENERGY:

src/main/java/hep/dataforge/trapping/TrappingRandomGenerator.java

@@ -4,8 +4,9 @@
  */
 package hep.dataforge.trapping;
 
-import org.apache.commons.math3.random.JDKRandomGenerator;
+import org.apache.commons.math3.random.MersenneTwister;
 import org.apache.commons.math3.random.RandomGenerator;
+import org.apache.commons.math3.random.SynchronizedRandomGenerator;
 
 /**
  *
@@ -15,7 +16,7 @@ public class TrappingRandomGenerator {
     RandomGenerator generator;
 
     public TrappingRandomGenerator() {
-        this.generator = new JDKRandomGenerator();
+        this.generator = new SynchronizedRandomGenerator(new MersenneTwister());
     }
 
     public TrappingRandomGenerator(RandomGenerator generator) {