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‎aima-gui/src/main/java/aima/gui/fx/demo/search/NQueensSearchApp.java‎

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package aima.gui.fx.demo.search;
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import aima.core.environment.nqueens.NQueensBoard;
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import aima.core.environment.nqueens.NQueensBoard.Config;
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import aima.core.search.framework.Metrics;
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import aima.core.search.framework.qsearch.TreeSearch;
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import aima.core.search.uninformed.DepthFirstSearch;
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import aima.gui.fx.framework.IntegrableApplication;
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import aima.gui.fx.framework.Parameter;
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import aima.gui.fx.framework.SimulationPaneBuilder;
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import aima.gui.fx.framework.SimulationPaneCtrl;
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import aima.gui.fx.views.NQueensViewCtrl;
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import javafx.application.Platform;
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import javafx.scene.layout.BorderPane;
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import javafx.scene.layout.Pane;
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import javafx.scene.layout.StackPane;
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/**
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* Integrable application which demonstrates how different search strategies
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* solve the N-Queens problem.
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*
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* @author Ruediger Lunde
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*
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*/
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public class NQueensSearchApp extends IntegrableApplication {
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public static void main(String[] args) {
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launch(args);
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}
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public final static String PARAM_STRATEGY = "strategy";
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public final static String PARAM_BOARD_SIZE = "boardSize";
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public final static String PARAM_INIT_CONFIG = "initConfig";
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private NQueensViewCtrl stateViewCtrl;
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private SimulationPaneCtrl simPaneCtrl;
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private NQueensSearchProg experiment;
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public NQueensSearchApp() {
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experiment = new NQueensSearchProg();
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experiment.addProgressTracer(this::updateStateView);
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}
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@Override
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public String getTitle() {
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return "N-Queens Search App";
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}
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/**
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* Defines state view, parameters, and call-back functions and calls the
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* simulation pane builder to create layout and controller objects.
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*/
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@Override
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public Pane createRootPane() {
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BorderPane root = new BorderPane();
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StackPane stateView = new StackPane();
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stateViewCtrl = new NQueensViewCtrl(stateView);
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Parameter[] params = createParameters();
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SimulationPaneBuilder builder = new SimulationPaneBuilder();
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builder.defineParameters(params);
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builder.defineStateView(stateView);
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builder.defineInitMethod(this::initialize);
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builder.defineSimMethod(this::simulate);
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simPaneCtrl = builder.getResultFor(root);
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return root;
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}
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protected Parameter[] createParameters() {
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Parameter p1 = new Parameter(PARAM_STRATEGY, "Depth-First Search", "Hill Climbing", "Simulated Annealing",
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"Genetic Algorithm");
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Parameter p2 = new Parameter(PARAM_BOARD_SIZE, 8, 16, 32, 64);
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Parameter p3 = new Parameter(PARAM_INIT_CONFIG, "FirstRow", "Random");
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p3.setDependency(PARAM_STRATEGY, "Hill Climbing", "Simulated Annealing", "Genetic Algorithm");
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return new Parameter[] {p1, p2, p3};
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}
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/** Displays the selected function on the state view. */
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@Override
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public void initialize() {
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experiment.setBoardSize(simPaneCtrl.getParamAsInt(PARAM_BOARD_SIZE));
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Object strategy = simPaneCtrl.getParamValue(PARAM_STRATEGY);
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Config config;
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if (strategy.equals("Depth-First Search") || strategy.equals("Genetic Algorithm"))
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config = Config.EMPTY;
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else if (simPaneCtrl.getParamValue(PARAM_INIT_CONFIG).equals("Random"))
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config = Config.QUEEN_IN_EVERY_COL;
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else
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config = Config.QUEENS_IN_FIRST_ROW;
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experiment.initExperiment(config);
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stateViewCtrl.updateBoard(experiment.getBoard());
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}
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@Override
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public void finalize() {
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simPaneCtrl.cancelSimulation();
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}
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/** Starts the experiment. */
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public void simulate() {
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Object strategy = simPaneCtrl.getParamValue(PARAM_STRATEGY);
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if (strategy.equals("Depth-First Search"))
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experiment.startExperiment(new DepthFirstSearch(new TreeSearch()));
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else if (strategy.equals("Hill Climbing"))
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experiment.startHillClimbingExperiment();
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else if (strategy.equals("Simulated Annealing"))
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experiment.startSimulatedAnnealingExperiment();
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else if (strategy.equals("Genetic Algorithm"))
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experiment.startGenAlgoExperiment(simPaneCtrl.getParamValue(PARAM_INIT_CONFIG).equals("Random"));
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}
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/**
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* Caution: While the background thread should be slowed down, updates of
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* the GUI have to be done in the GUI thread!
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*/
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private void updateStateView(NQueensBoard board, Metrics metrics) {
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Platform.runLater(() -> updateStateViewLater(board, metrics));
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simPaneCtrl.waitAfterStep();
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}
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/**
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* Must be called by the GUI thread!
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*/
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private void updateStateViewLater(NQueensBoard board, Metrics metrics) {
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stateViewCtrl.updateBoard(board);
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simPaneCtrl.setStatus(metrics.toString());
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}
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}
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package aima.gui.fx.demo.search;
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import aima.core.environment.nqueens.NQueensBoard;
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import aima.core.environment.nqueens.NQueensBoard.Config;
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import aima.core.search.framework.Metrics;
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import aima.core.search.framework.qsearch.TreeSearch;
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import aima.core.search.uninformed.DepthFirstSearch;
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import aima.gui.fx.framework.IntegrableApplication;
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import aima.gui.fx.framework.Parameter;
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import aima.gui.fx.framework.SimulationPaneBuilder;
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import aima.gui.fx.framework.SimulationPaneCtrl;
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import aima.gui.fx.views.NQueensViewCtrl;
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import javafx.application.Platform;
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import javafx.scene.layout.BorderPane;
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import javafx.scene.layout.Pane;
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import javafx.scene.layout.StackPane;
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18+
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/**
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* Integrable application which demonstrates how different search strategies
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* solve the N-Queens problem.
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*
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* @author Ruediger Lunde
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*
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*/
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public class NQueensSearchApp extends IntegrableApplication {
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public static void main(String[] args) {
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launch(args);
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}
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public final static String PARAM_STRATEGY = "strategy";
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public final static String PARAM_BOARD_SIZE = "boardSize";
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public final static String PARAM_INIT_CONFIG = "initConfig";
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private NQueensViewCtrl stateViewCtrl;
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private SimulationPaneCtrl simPaneCtrl;
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private NQueensSearchProg experiment;
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public NQueensSearchApp() {
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experiment = new NQueensSearchProg();
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experiment.addProgressTracer(this::updateStateView);
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}
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@Override
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public String getTitle() {
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return "N-Queens Search App";
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}
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/**
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* Defines state view, parameters, and call-back functions and calls the
52+
* simulation pane builder to create layout and controller objects.
53+
*/
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@Override
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public Pane createRootPane() {
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BorderPane root = new BorderPane();
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StackPane stateView = new StackPane();
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stateViewCtrl = new NQueensViewCtrl(stateView);
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Parameter[] params = createParameters();
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SimulationPaneBuilder builder = new SimulationPaneBuilder();
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builder.defineParameters(params);
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builder.defineStateView(stateView);
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builder.defineInitMethod(this::initialize);
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builder.defineSimMethod(this::simulate);
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simPaneCtrl = builder.getResultFor(root);
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return root;
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}
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protected Parameter[] createParameters() {
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Parameter p1 = new Parameter(PARAM_STRATEGY, "Depth-First Search", "Hill Climbing", "Simulated Annealing",
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"Genetic Algorithm");
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Parameter p2 = new Parameter(PARAM_BOARD_SIZE, 8, 16, 32, 64);
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Parameter p3 = new Parameter(PARAM_INIT_CONFIG, "FirstRow", "Random");
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p3.setDependency(PARAM_STRATEGY, "Hill Climbing", "Simulated Annealing", "Genetic Algorithm");
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return new Parameter[] {p1, p2, p3};
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}
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/** Displays the selected function on the state view. */
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@Override
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public void initialize() {
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experiment.setBoardSize(simPaneCtrl.getParamAsInt(PARAM_BOARD_SIZE));
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Object strategy = simPaneCtrl.getParamValue(PARAM_STRATEGY);
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Config config;
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if (strategy.equals("Depth-First Search") || strategy.equals("Genetic Algorithm"))
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config = Config.EMPTY;
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else if (simPaneCtrl.getParamValue(PARAM_INIT_CONFIG).equals("Random"))
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config = Config.QUEEN_IN_EVERY_COL;
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else
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config = Config.QUEENS_IN_FIRST_ROW;
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experiment.initExperiment(config);
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stateViewCtrl.updateBoard(experiment.getBoard());
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}
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@Override
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public void finalize() {
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simPaneCtrl.cancelSimulation();
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}
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/** Starts the experiment. */
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public void simulate() {
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Object strategy = simPaneCtrl.getParamValue(PARAM_STRATEGY);
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if (strategy.equals("Depth-First Search"))
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experiment.startExperiment(new DepthFirstSearch(new TreeSearch()));
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else if (strategy.equals("Hill Climbing"))
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experiment.startHillClimbingExperiment();
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else if (strategy.equals("Simulated Annealing"))
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experiment.startSimulatedAnnealingExperiment();
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else if (strategy.equals("Genetic Algorithm"))
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experiment.startGenAlgoExperiment(simPaneCtrl.getParamValue(PARAM_INIT_CONFIG).equals("Random"));
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}
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/**
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* Caution: While the background thread should be slowed down, updates of
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* the GUI have to be done in the GUI thread!
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*/
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private void updateStateView(NQueensBoard board, Metrics metrics) {
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Platform.runLater(() -> updateStateViewLater(board, metrics));
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simPaneCtrl.waitAfterStep();
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}
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/**
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* Must be called by the GUI thread!
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*/
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private void updateStateViewLater(NQueensBoard board, Metrics metrics) {
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stateViewCtrl.updateBoard(board);
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simPaneCtrl.setStatus(metrics.toString());
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}
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}

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