Hướng dẫn và ví dụ JavaFX Rectangle và Ellipse

JavaFX Rectangle
Hình chữ nhật góc tròn
JavaFX Ellipse
Các hiệu ứng

1. JavaFX Rectangle

Class Rectangle là class giúp vẽ ra một hình chữ nhật, cũng giống như các class Line, Circle,. nó cũng mở rộng từ class Shape.

RectangleDemo.java

package org.o7planning.javafx.rectangle;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class RectangleDemo extends Application {

    @Override
    public void start(Stage primaryStage) {

        Rectangle rectangle = new Rectangle();
        rectangle.setX(20);
        rectangle.setY(50);
        rectangle.setWidth(200);
        rectangle.setHeight(150);
        rectangle.setFill(Color.BISQUE);

        Group root = new Group();
        root.getChildren().add(rectangle);

        Scene scene = new Scene(root, 400, 250, Color.WHITE);
        primaryStage.setTitle("JavaFX Rectangle (o7planning.org)");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

}

2. Hình chữ nhật góc tròn

RectangleRoundedCornerDemo.java

package org.o7planning.javafx.rectangle;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.stage.Stage;

public class RectangleRoundedCornerDemo extends Application {

    @Override
    public void start(Stage primaryStage) {

        Rectangle rectangle = new Rectangle();
        rectangle.setX(80);
        rectangle.setY(50);
        rectangle.setWidth(200);
        rectangle.setHeight(150);
        rectangle.setFill(Color.CADETBLUE);
       
        rectangle.setArcHeight(105);
        rectangle.setArcWidth(50);

        Group root = new Group();
        root.getChildren().add(rectangle);

        Scene scene = new Scene(root, 400, 250, Color.WHITE);
        primaryStage.setTitle("JavaFX Rectangle (o7planning.org)");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

}

3. JavaFX Ellipse

EllipseDemo.java

package org.o7planning.javafx.ellipse;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Ellipse;
import javafx.stage.Stage;

public class EllipseDemo extends Application {

   @Override
   public void start(Stage primaryStage) {

       Group root = new Group();

       Ellipse ellipse = new Ellipse();
       ellipse.setCenterX(180.0f);
       ellipse.setCenterY(150.0f);
 
       // Bán kính theo trục X
       ellipse.setRadiusX(120.0f);
 
       // Bán kính theo trục Y
       ellipse.setRadiusY(80.0f);

       // Mầu nền
       ellipse.setFill(Color.CORNFLOWERBLUE);

       root.getChildren().add(ellipse);

       Scene scene = new Scene(root, 400, 250);

       primaryStage.setTitle("JavaFX Ellipse (o7planning.org)");

       primaryStage.setScene(scene);
       primaryStage.show();
   }

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

}

4. Các hiệu ứng

Ví dụ xoay hình.

EllipseDemo2.java

package org.o7planning.javafx.ellipse;

import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.paint.Color;
import javafx.scene.shape.Ellipse;
import javafx.stage.Stage;

public class EllipseDemo2 extends Application {

   @Override
   public void start(Stage primaryStage) {

       Group root = new Group();

       Ellipse ellipse = new Ellipse();
       ellipse.setCenterX(180.0f);
       ellipse.setCenterY(150.0f);
 
       // Bán kính theo trục X
       ellipse.setRadiusX(120.0f);
 
       // Bán kính theo trục Y
       ellipse.setRadiusY(80.0f);
 
       // Mầu nền
       ellipse.setFill(Color.CORNFLOWERBLUE);
     
        // Xoay một góc 30 độ
       ellipse.setRotate(30);

       root.getChildren().add(ellipse);

       Scene scene = new Scene(root, 400, 250);

       primaryStage.setTitle("JavaFX Ellipse (o7planning.org)");

       primaryStage.setScene(scene);
       primaryStage.show();
   }

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

}