JavaFX Canvas getHeight()

public final double getHeight()

import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;

public class Diagram {
    private double[] values;
    public final static String[] names = { "????", "??????", "????", "??????" };

    public Diagram(double[] values) {
        this.values = values;
    }//  w   w   w  .  d  e m  o   2s   .   co   m 

    public void draw(Canvas canvas) {
        if (values == null || values.length == 0) {
            return;
        }
        GraphicsContext gc = canvas.getGraphicsContext2D();
        gc.setFill(Color.GREEN);
        gc.fillOval(50, 50, canvas.getWidth() - 100, canvas.getHeight() - 100);
    }
}

import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;

/**//   w  w   w  . d e    m  o  2  s  . c   o m 
 * Created by Hannes on 18/02/2017.
 */
public class Bird extends Mover {
    public Bird(float x, float y, float m) {
        super(x, y, m);
        bouncyness = 0;
    }

    public boolean checkFallen(Canvas canvas) {

        if (pos.y > canvas.getHeight())
            return true;

        return false;

    }

    @Override
    public void newFrame(GraphicsContext gc, Canvas canvas) {
        FlappyBird.gameOver = checkFallen(canvas);
        super.newFrame(gc, canvas);
    }
}

import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;

import java.util.ArrayList;
import java.util.List;

public class Simulation {
    private final List<SimulationObject> simulationObjects = new ArrayList<>();

    public void draw(Canvas canvas) {
        GraphicsContext context = canvas.getGraphicsContext2D();
        context.clearRect(0, 0, canvas.getWidth(), canvas.getHeight());
        for (SimulationObject simulationObject : simulationObjects) {
            simulationObject.draw(context);
        }//  w  w    w .  d   e m   o 2 s   .  c  o m  
    }

    public void add(SimulationObject simulationObject) {
        simulationObjects.add(simulationObject);
    }

    public void step() {
        for (SimulationObject obj : simulationObjects) {
            obj.step();
        }
    }
}