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Initial RMI Version of Mandelbrot App

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Sebastian Rieger 7 years ago
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  1. 285
      VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/MGuiRMI.java
  2. 14
      VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/RMIMandelbrotCalculationsInterface.java
  3. 130
      VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/RMIMandelbrotCalculationsServer.java

285
VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/MGuiRMI.java
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package verteiltesysteme.mandelbrot.rmi;
//Mandelbot Example A. Gepperth
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
class MyJLabel extends JLabel {
/**
*
*/
private static final long serialVersionUID = -7750935382747799343L;
int boxULx, boxULy, boxW, boxH;
MyJLabel() {
super();
}
MyJLabel(String s) {
super(s);
}
void setBox(int boxULx, int boxULy, int boxW, int boxH) {
this.boxULx = boxULx;
this.boxULy = boxULy;
this.boxW = boxW;
this.boxH = boxH;
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.black);
g.drawRect(this.boxULx, this.boxULy, this.boxW, this.boxH);
}
}
public class MGuiRMI implements ActionListener, ChangeListener, MouseListener, MouseMotionListener {
// GUI elements
JFrame frame;
JPanel panel;
JButton endButton;
JButton backButton;
JButton calcButton;
JSlider maxIterations;
MyJLabel view;
int nrIterations;
// box management
int boxULx, boxULy, boxW, boxH;
boolean dragging = false;
// this one does all the calculating work
RMIMandelbrotCalculationsInterface remoteCalcObj;
// how many points in the image?
// change if you want a higher resolution
public static final int RESX = 600;
public static final int RESY = 600;
MGuiRMI() {
// set up GUI
this.frame = new JFrame("Mandelbrotmenge");
this.panel = new JPanel();
this.endButton = new JButton("Ende");
this.panel.add(this.endButton);
this.backButton = new JButton("Zurueck");
this.panel.add(this.backButton);
this.calcButton = new JButton("Rechnen");
this.panel.add(this.calcButton);
this.frame.add(this.panel);
this.frame.setSize(500, 500);
this.frame.setVisible(true);
this.view = new MyJLabel("Platzhalter");
this.maxIterations = new JSlider(0, 50, 30);
this.panel.add(this.maxIterations);
this.panel.add(this.view);
this.endButton.addActionListener(this);
this.backButton.addActionListener(this);
this.calcButton.addActionListener(this);
this.maxIterations.addChangeListener(this);
this.maxIterations.setMajorTickSpacing(10);
this.maxIterations.setPaintTicks(true);
this.maxIterations.setPaintLabels(true);
this.view.addMouseListener(this);
this.view.addMouseMotionListener(this);
this.boxULx = 0;
this.boxULy = 0;
this.boxW = MGuiRMI.RESX;
this.boxH = MGuiRMI.RESY;
// Non-Gui stuff
String host = "";
try {
Registry registry = LocateRegistry.getRegistry(host);
this.remoteCalcObj = (RMIMandelbrotCalculationsInterface) registry.lookup("RMIEchoInterface");
} catch (RemoteException | NotBoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
this.nrIterations = 1000;
}
// visualization related stuff, do not touch!
int[] generateLookupTable(int nrHues) {
int[] tmp = new int[nrHues + 1];
int cycle = 2048;
for (int i = 0; i < nrHues; i++) {
float hue = 1 * ((float) (i % cycle)) / cycle/* ((float)nrHues) */ ;
tmp[i] = Color.HSBtoRGB(hue, 0.8f, 1.0f);
}
tmp[0] = Color.HSBtoRGB(0f, 1.0f, 0.0f);
return tmp;
}
// visualization
static void applyLookupTable(int[] data, int[] dest, int[] lookupTable) {
for (int i = 0; i < data.length; i++) {
dest[i] = lookupTable[data[i]];
}
}
// here we check what the buttons do
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == this.endButton) {
System.out.println("Ende");
System.exit(0);
} else
if (ae.getSource() == this.backButton) {
System.out.println("Zurueck");
double ULx = -0.16099999999999995;
double ULy = -0.9365333333333333;
double LRx = -0.03533333333333327;
double LRy = -0.8108666666666666;
this.boxULx = 0;
this.boxULy = 0;
this.boxW = MGuiRMI.RESX;
this.boxH = MGuiRMI.RESY;
this.view.setBox(this.boxULx, this.boxULy, this.boxW, this.boxH);
this.view.repaint();
try {
this.remoteCalcObj.setView(ULx, ULy, LRx, LRy);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else
if (ae.getSource() == this.calcButton) {
System.out.println("Rechnen");
long timestampStart = System.currentTimeMillis();
double ULx = 0;
double ULy = 0;
double LRx = 0;
double LRy = 0;
try {
ULx = this.remoteCalcObj.getULx();
ULy = this.remoteCalcObj.getULy();
LRx = this.remoteCalcObj.getLRx();
LRy = this.remoteCalcObj.getLRy();
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
double w = LRx - ULx;
double h = LRy - ULy;
ULx = ULx + w * this.boxULx / (double) MGuiRMI.RESX;
ULy = ULy + h * this.boxULy / (double) MGuiRMI.RESY;
w *= this.boxW / (double) (RESX);
h *= this.boxH / (double) (RESX);
LRx = ULx + w;
LRy = ULy + h;
System.out.println(ULx + "/" + ULy + "/" + LRx + "/" + LRy);
this.boxULx = 0;
this.boxULy = 0;
this.boxW = MGuiRMI.RESX;
this.boxH = MGuiRMI.RESY;
int[] colors = null;
try {
this.remoteCalcObj.setView(ULx, ULy, LRx, LRy);
this.remoteCalcObj.iterateAllPoints(this.maxIterations.getValue() * 1000, MGuiRMI.RESX, MGuiRMI.RESY);
int[] lookupTable = generateLookupTable(this.maxIterations.getValue() * 1000);
colors = new int[MGuiRMI.RESX * MGuiRMI.RESY];
MGuiRMI.applyLookupTable(remoteCalcObj.getResult(), colors, lookupTable);
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
BufferedImage colorImage = new BufferedImage(MGuiRMI.RESX, MGuiRMI.RESY, BufferedImage.TYPE_INT_ARGB);
colorImage.setRGB(0, 0, MGuiRMI.RESX, MGuiRMI.RESY, colors, 0, MGuiRMI.RESX);
this.view.setIcon(new ImageIcon(colorImage));
this.view.setBox(this.boxULx, this.boxULy, this.boxW, this.boxH);
this.view.repaint();
long timestampEnd = System.currentTimeMillis();
String timeElapsed = "Zeit: " + ((timestampEnd - timestampStart) / 1000.0) + " sec";
System.out.println(timeElapsed);
this.view.setText(timeElapsed);
}
}
public void mousePressed(MouseEvent e) {
this.boxULx = e.getX();
this.boxULy = e.getY();
this.boxW = 1;
this.boxH = 1;
this.view.setBox(this.boxULx, this.boxULy, this.boxW, this.boxH);
}
public void mouseDragged(MouseEvent e) {
this.boxW = e.getX() - this.boxULx + 1;
this.boxH = e.getY() - this.boxULy + 1;
int m = Math.min(boxW, boxH);
this.boxW = m;
this.boxH = m;
this.view.setBox(this.boxULx, this.boxULy, this.boxW, this.boxH);
this.view.repaint();
}
public void mouseReleased(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
this.view.repaint();
}
}
public void mouseMoved(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
}
// process a new slider value
public void stateChanged(ChangeEvent ce) {
if (ce.getSource() == this.maxIterations) {
//System.out.println("Neuer Wert");
this.nrIterations = this.maxIterations.getValue() * 1000;
}
}
// main, just instantiate an MGui object, gives control to the Gui
public static void main(String[] args) {
@SuppressWarnings("unused")
MGuiRMI gui = new MGuiRMI();
}
}

14
VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/RMIMandelbrotCalculationsInterface.java
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package verteiltesysteme.mandelbrot.rmi;
import java.rmi.Remote;
import java.rmi.RemoteException;
public interface RMIMandelbrotCalculationsInterface extends Remote {
void iterateAllPoints(int maxIterations, double nrPointsX, double nrPointsY) throws RemoteException;
public int[] getResult() throws RemoteException;
public double getULx() throws RemoteException;
public double getLRx() throws RemoteException;
public double getULy() throws RemoteException;
public double getLRy() throws RemoteException;
public void setView(double ULx, double ULy, double LRx, double LRy) throws RemoteException;
}

130
VerteilteSysteme-Examples/src/verteiltesysteme/mandelbrot/rmi/RMIMandelbrotCalculationsServer.java
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package verteiltesysteme.mandelbrot.rmi;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
class Complex {
double r;
double i;
Complex() {
r = 0.0;
i = 0.0;
}
Complex(double r, double i) {
this.r = r;
this.i = i;
}
void mulBy(Complex other) {
double rTmp = this.r * other.r - this.i * other.i;
this.i = this.r * other.i + this.i * other.r;
this.r = rTmp;
}
void add(Complex other) {
this.r += other.r;
this.i += other.i;
}
void sub(Complex other) {
this.r -= other.r;
this.i -= other.i;
}
double absValue() {
return Math.sqrt(this.r * this.r + this.i * this.i);
}
}
public class RMIMandelbrotCalculationsServer implements RMIMandelbrotCalculationsInterface {
public RMIMandelbrotCalculationsServer() {}
public static void main(String args[]) {
try {
RMIMandelbrotCalculationsServer obj = new RMIMandelbrotCalculationsServer();
RMIMandelbrotCalculationsInterface stub = (RMIMandelbrotCalculationsInterface) UnicastRemoteObject.exportObject(obj, 0);
// Bind the remote object's stub in the registry
Registry registry = LocateRegistry.getRegistry();
registry.bind("RMIEchoInterface", stub);
System.err.println("Server ready");
} catch (Exception e) {
System.err.println("Server exception: " + e.toString());
e.printStackTrace();
}
}
// hier wird das Ergebnis von iterateAll() gespeichert
protected int[] result = null;
// der augenblicklich gewaehlte Ausschnitt
//double ULx = -2, ULy = -2, LRx = 2, LRy = 2;
double ULx = -0.16099999999999995, ULy = -0.9365333333333333, LRx = -0.03533333333333327, LRy = -0.8108666666666666;
int iterateOnePoint(Complex c, int maxIterations, double maxModulus) {
Complex z = new Complex(0., 0.);
for (int i = 0; i < maxIterations; i++) {
z.mulBy(z);
z.add(c);
double m = z.absValue();
if (m > maxModulus) {
return i;
}
}
return maxIterations;
}
public void iterateAllPoints(int maxIterations, double nrPointsX, double nrPointsY) {
this.result = new int[(int) (nrPointsX * nrPointsY)];
int counter = 0;
double stepX = (this.LRx - this.ULx) / nrPointsX;
double stepY = (this.LRy - this.ULy) / nrPointsY;
double i = this.ULy;
for (int cy = 0; cy < nrPointsY; cy++) {
double r = this.ULx;
for (int cx = 0; cx < nrPointsX; cx++) {
Complex c = new Complex(r, i);
this.result[counter] = maxIterations - this.iterateOnePoint(c, maxIterations, 2.0);
counter += 1;
r += stepX;
}
i += stepY;
}
}
public int[] getResult() {
return this.result;
}
public double getULx() {
return this.ULx;
}
public double getLRx() {
return this.LRx;
}
public double getULy() {
return this.ULy;
}
public double getLRy() {
return this.LRy;
}
public void setView(double ULx, double ULy, double LRx, double LRy) {
this.ULx = ULx;
this.ULy = ULy;
this.LRx = LRx;
this.LRy = LRy;
}
}
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