17. Intersect, subtract and union

We can use the static Path methods, intersect, subtract and union, to perform different operations with 2 shapes.

Here they are applied to 3 circle and 3 rectangles, with overlap. The intersect will result in the lowest area, while union with the most.

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package ex17;

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

public class Ex17 extends Application {
    
    @Override
    public void start(Stage primaryStage) {
        
        Group root = new Group();
        
        double w = 50, rad = 25, x = 100, y = 100;
        
        Circle circ1 = new Circle(x, y, rad);
        Circle circ2 = new Circle(2*x, y, rad);
        Circle circ3 = new Circle(3*x, y, rad);
        Rectangle rect1 = new Rectangle(x, y, w, w);
        Rectangle rect2 = new Rectangle(2*x, y, w, w);
        Rectangle rect3 = new Rectangle(3*x, y, w, w);
        
        Shape intersect = Path.intersect(rect1, circ1);
        intersect.setFill(Color.RED);
        Shape subtract = Path.subtract(rect2, circ2);
        subtract.setFill(Color.RED);
        Shape union = Path.union(rect3, circ3);
        union.setFill(Color.RED);
        
        root.getChildren().addAll(intersect, subtract, union);
        
        Scene scene = new Scene(root, 400, 300, Color.HONEYDEW);
        
        primaryStage.setTitle("Example 17. Intersect, subtract, and union");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

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

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This is the output:

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