JavaFX圖形之路徑

案例代碼

import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.image.Image;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Color;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.stage.Stage;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

public class CreatePathGUI extends Application {
    @Override
    public void start(Stage primaryStage) throws Exception {
        Group root = new Group();
        Scene scene = new Scene(root,500,400);
        Button button = new Button("開始路徑描述");
        Path path = new Path();
        AtomicReference<AtomicInteger> i = new AtomicReference<>(new AtomicInteger());
        button.addEventFilter(MouseEvent.MOUSE_CLICKED, event->{
            if((i.get().get()) < 490){
                path.getElements().add(new MoveTo(i.get().get() +1,100.0f));
                path.getElements().add(new LineTo(i.get().get() +20,100.0f));
                path.setStroke(Color.ROSYBROWN);
                i.getAndSet(new AtomicInteger(i.get().get() + 20));
            }
        });
        
        root.getChildren().add(button);
        root.getChildren().add(path);

        primaryStage.setScene(scene);
        primaryStage.setTitle("JavaFX 路徑");
        primaryStage.getIcons().add(new Image(getClass().getResourceAsStream("/images/note.png")));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}