import javafx.application.*;
import javafx.beans.property.*;
import javafx.beans.value.*;
import javafx.geometry.*;
import javafx.event.*;
import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;
import javafx.scene.effect.*;
import javafx.scene.input.*;
import javafx.scene.text.*;
import javafx.scene.control.*;
import static java.lang.Math.*;

public class JDispTest2 extends Application {
    IntegerProperty mapw = new IntegerProperty();
    IntegerProperty maph = new IntegerProperty();

    FloatMap fm = new FloatMap();
    DoubleProperty level = new DoubleProperty();

    public void start(Stage stage) {
        fm.widthProperty().bind(mapw);
        fm.heightProperty().bind(maph);

        final Text text = new Text("Hello!");
        DisplacementMap dm = new DisplacementMap();
        dm.setMapData(fm);
        text.setEffect(dm);
        text.layoutBoundsProperty().addListener(new InvalidationListener<Bounds>() {
            public void invalidated(ObservableValue<? extends Bounds> obs) {
                mapw.set((int) Math.ceil(obs.getValue().getWidth()));
                maph.set((int) Math.ceil(obs.getValue().getHeight()));
                updateMapSin();
            }
        });
        mapw.set((int) Math.ceil(text.getLayoutBounds().getWidth()));
        maph.set((int) Math.ceil(text.getLayoutBounds().getHeight()));
        text.setTranslateX(30);
        text.setTranslateY(220);
        text.setFont(new Font(200));
        text.setFill(Color.RED);
        text.addEventHandler(MouseEvent.MOUSE_PRESSED, new EventHandler<MouseEvent>() {
            public void handle(MouseEvent e) {
                if (text.getFont().getSize() == 200) {
                    text.setFont(new Font(100));
                } else {
                    text.setFont(new Font(200));
                }
            }
        });

        Slider slider = new Slider(0, 1, 0);
        slider.setTranslateX(100);
        slider.setTranslateY(400);
        level.bind(slider.valueProperty());
        level.addListener(new InvalidationListener<Number>() {
            public void invalidated(ObservableValue<? extends Number> obs) {
                updateMapSin();
            }
        });

        Scene scene = new Scene(new Group(text, slider));
        scene.setFill(Color.BLACK);

        stage.setTitle("Displace!");
        stage.setScene(scene);
        stage.setWidth(600);
        stage.setHeight(500);
        stage.setVisible(true);
    }

    public void updateMapSin() {
        fillMapSin(level.getValue(), level.getValue());
    }

    public void fillMapSin(double xamplitude, double yamplitude) {
        int w = fm.getWidth();
        int h = fm.getHeight();
        System.out.println(w+" "+h);
        for (int x = 0; x < w; x++) {
            double angle = PI * 2.0 * (x+0.5) / (w/4.0);
            float xval = (float) (sin(angle) * xamplitude);
            for (int y = 0; y < h; y++) {
                fm.setSample(x, y, 0, xval);
            }
        }
        for (int y = 0; y < h; y++) {
            double angle = PI * 2.0 * (y+0.5) / (h/4.0);
            float yval = (float) (sin(angle) * yamplitude);
            for (int x = 0; x < w; x++) {
                fm.setSample(x, y, 1, yval);
            }
        }
    }

    public static void main(String argv[]) {
        launch(JDispTest2.class, argv);
    }
}