javafx.scene.shape.Polyline#getPoints ( )源码实例Demo

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
	// Create a pane 
	Pane pane = new Pane();

	// Create a polyline
	Polyline polyline = new Polyline(new Double(100.0), new Double(100.0));
	polyline.setFill(Color.WHITE);
	polyline.setStroke(Color.BLACK);
	pane.getChildren().add(polyline);
	ObservableList<Double> list = polyline.getPoints();

	// Create and register handler
	pane.setOnKeyPressed(e -> {
		double x = 0, y = 0;
		double length = 10;
		switch (e.getCode()) {
			case DOWN: x = list.get(list.size() - 2);
						  y = list.get(list.size() - 1) + length; break;
			case UP: x = list.get(list.size() - 2);
						y = list.get(list.size() - 1) - length; break;
			case RIGHT: x = list.get(list.size() - 2) + length;
						  y = list.get(list.size() - 1); break;
			case LEFT: x = list.get(list.size() - 2) - length;
						  y = list.get(list.size() - 1); break;

		}
		list.add(x);
		list.add(y); 
	});

	// Create a scene and place it in the stage
	Scene scene = new Scene(pane, 200, 200);
	primaryStage.setTitle("Exercise_15_09"); // Set the stage title
	primaryStage.setScene(scene); // Place the scene in the stage
	primaryStage.show(); // Display the stage

	pane.requestFocus(); // Pane is focused to receive key input 
}
 

public static String convertPolyline(final Polyline POLYLINE) {
    final StringBuilder fxPath = new StringBuilder();
    final int           size   = POLYLINE.getPoints().size();
    if (size % 2 == 0) {
        List<Double> coordinates     = POLYLINE.getPoints();
        for (int i = 0 ; i < size ; i += 2) {
            fxPath.append(i == 0 ? "M " : "L ")
                  .append(coordinates.get(i)).append(" ").append(coordinates.get(i + 1)).append(" ");
        }
    }
    return fxPath.toString();
}
 

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
	// Create two panes
	Pane pane1 = new Pane();
	pane1.setRotate(180);
	pane1.setPadding(new Insets(72, 0, 0, 75));
	Pane pane2 = new Pane();

	// Create a polyline
	Polyline polyline1 = new Polyline();
	pane1.getChildren().add(polyline1);             
	ObservableList<Double> list = polyline1.getPoints();
	double scaleFactor = 0.0125;                       
	for (int x = -100; x <= 100; x++) {                
		list.add(x + 200.0);                            
		list.add(scaleFactor * x * x);                  
	}  

	// Create two lines
	Line lineX = new Line(10, 200, 350, 200);                                                
	//pane.getChildren().addAll(stackPane, lineX);

	Line lineY = new Line(lineX.getEndX() / 2, 250, lineX.getEndX() / 2, 30);                                                
	pane2.getChildren().addAll(pane1, lineX, lineY);

	// Create two polylines
	Polyline polyline2 = new Polyline();
	pane2.getChildren().add(polyline2);
	ObservableList<Double> list2 = polyline2.getPoints();
	list2.addAll(lineY.getEndX() - 10, lineY.getEndY() + 20, 
		lineY.getEndX(), lineY.getEndY(), lineY.getEndX() + 10, 
		lineY. getEndY() + 20);

	Polyline polyline3 = new Polyline();
	pane2.getChildren().add(polyline3);
	ObservableList<Double> list3 = polyline3.getPoints();
	list3.addAll(lineX.getEndX() - 20, lineX.getEndY() - 10, 
		lineX.getEndX(), lineX.getEndY(), lineX.getEndX() - 20, 
		lineX. getEndY() + 10);

	// Create two text objects
	Text textX = new Text(lineX.getEndX() - 10, lineX.getEndY() - 20, "X");
	Text textY = new Text(lineY.getEndX() + 20, lineY.getEndY() + 10, "Y");
	pane2.getChildren().addAll(textX, textY);

	// Create a scene and place it in the stage
	Scene scene = new Scene(pane2);
	primaryStage.setTitle("Exercise_14_18"); // Set the stage title
	primaryStage.setScene(scene); // Place the scene in the stage
	primaryStage.show(); // Display the stage
}
 

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
	// Create a pane
	Pane pane = new Pane();

	// Create three polylines and set their properties
	Polyline polyline1 = new Polyline();
	pane.getChildren().add(polyline1);
	polyline1.setStroke(Color.BLACK);
	ObservableList<Double> list = polyline1.getPoints();
	double x1 = 40.0;
	double y1 = 190.0;
	double y2 = 20.0;
	double x3 = 125.0;
	list.addAll(x1, y1, x1, y2, x3, y2, x3, y1 * .60);

	Polyline polyline2 = new Polyline();
	pane.getChildren().add(polyline2);
	polyline2.setStroke(Color.BLACK);
	ObservableList<Double> list2 = polyline2.getPoints();
	list2.addAll((x1 + x3) * .5, y1 * .5, x3, y1 * .25,
		x3 + (x3 - x1) * .5, y1 * .5);

	Polyline polyline3 = new Polyline();
	pane.getChildren().add(polyline3);
	polyline3.setStroke(Color.BLACK);
	ObservableList<Double> list3 = polyline3.getPoints();
	list3.addAll((x1 + x3) * .6, y1 * .80, x3, y1 * .60,
		x3 + (x3 - x1) * .3, y1 * .80);

	// Create a circle and set its properties
	Circle circle = new Circle(x3, y1 * .25, 15);
	circle.setFill(Color.WHITE);
	circle.setStroke(Color.BLACK);
	pane.getChildren().add(circle);

	// Create an arc and set its properties
	Arc arc = new Arc(x1, y1 + 1, 25, 15, 0, 180);
	arc.setFill(Color.WHITE);
	arc.setStroke(Color.BLACK);
	pane.getChildren().add(arc);

	// Create a scene and place it in the stage
	Scene scene = new Scene(pane, 200, 200);
	primaryStage.setTitle("Exercise_14_17"); // Set the stage title
	primaryStage.setScene(scene); // Place the scene in the stage
	primaryStage.show(); // Display the stage
}