在我需要创建的应用程序中,我有一系列由线连接的点。我只需要查看图形的线部分并隐藏点即可。但是,我需要通过单击图形中的适当位置来标记某些点。在我编写的代码中,我要么可以隐藏点而不能标记,要么可以标记但不能隐藏其余的点。如何隐藏点并标记所需的点?
package application;
import java.awt.Dimension;
import java.awt.Toolkit;
//import java.beans.EventHandler;
import java.util.ArrayList;
import javafx.event.EventHandler;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.input.MouseButton;
import javafx.scene.input.MouseEvent;
import javafx.scene.Scene;
import javafx.scene.chart.Axis;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.layout.Priority;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;
public class Main extends Application {
public XYChart.Data<Integer,Integer> k = new XYChart.Data();
public XYChart.Series series;
String pth;
public ObservableList<XYChart.Data<Integer,Integer>> dat = FXCollections.<XYChart.Data<Integer,Integer>>observableArrayList();
public int c = 0;
ArrayList<Integer> myListx = new ArrayList<Integer>();
public void start(Stage stage) {
stage.setTitle("Line Chart Sample");
final NumberAxis xAxis = new NumberAxis();
final NumberAxis yAxis = new NumberAxis();
xAxis.setLabel("Samples");
yAxis.setLabel("Data");
final LineChart<Number,Number> lineChart = new LineChart<Number,Number>(xAxis,yAxis);
lineChart.setCreateSymbols(false);
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int width = (int) screenSize.getWidth();
int height = (int) screenSize.getHeight();
StackPane spLineChart = new StackPane();
spLineChart.getchildren().add(lineChart);
while (c < 20) {
k = new XYChart.Data<Integer,Integer>(c++,c * 6);
dat.add(k);
k.setNode(new Node(c));
}
series = new XYChart.Series("IMU Data",dat);
lineChart.getData().addAll(series);
xAxis.setVisible(true);
yAxis.setVisible(true);
spLineChart.setVisible(true);
StackPane spButton = new StackPane();
StackPane sp = new StackPane();
VBox vbox = new VBox();
VBox.setVgrow(spLineChart,Priority.ALWAYS);
vbox.getchildren().addAll(sp,spLineChart,spButton);
Scene scene = new Scene(vbox,width,height - 500);
stage.setScene(scene);
stage.show();
}
class Node extends StackPane {
Node(int priorValue) {
final Circle circle = createData();
setOnmouseclicked(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
if (mouseEvent.getButton().equals(MouseButton.PRIMARY)) {
getchildren().setall(circle);
myListx.add(priorValue);
} else if (mouseEvent.getButton().equals(MouseButton.SECONDARY)) {
getchildren().clear();
myListx.remove(new Integer(priorValue));
}
}
;
});
}
private Circle createData() {
Circle circle = new Circle();
circle.setfill(Color.BLACK);
circle.setStroke(Color.BLACK);
circle.setRadius(4);
return circle;
}
}
public static void main(String[] args) {
launch(args);
}
}