二维图形（对象）交集运算

此操作将两个或多个形状作为输入，并返回它们之间的交集区域，如下所示。

您可以使用名为 intersect() 的方法对形状执行交集运算。由于这是一个静态方法，因此您应该使用类名（Shape 或其子类）来调用它，如下所示。

Shape shape = Shape.intersect(circle1, circle2); 

以下是交集运算的示例。在这里，我们绘制了两个圆形并对其执行交集运算。

将此代码保存在名为 IntersectionExample.java 的文件中

示例

import javafx.application.Application; 
import javafx.scene.Group; 
import javafx.scene.Scene; 
import javafx.scene.paint.Color; 
import javafx.stage.Stage; 
import javafx.scene.shape.Circle; 
import javafx.scene.shape.Shape; 
         
public class IntersectionExample extends Application { 
   @Override 
   public void start(Stage stage) { 
      //Drawing Circle1 
      Circle circle1 = new Circle();
      
      //Setting the position of the circle 
      circle1.setCenterX(250.0f); 
      circle1.setCenterY(135.0f); 
      
      //Setting the radius of the circle 
      circle1.setRadius(100.0f); 
      
      //Setting the color of the circle 
      circle1.setFill(Color.DARKSLATEBLUE);     
       
      //Drawing Circle2 
      Circle circle2 = new Circle();         
      
      //Setting the position of the circle 
      circle2.setCenterX(350.0f); 
      circle2.setCenterY(135.0f); 
      
      //Setting the radius of the circle  
      circle2.setRadius(100.0f); 
      
      //Setting the color of the circle 
      circle2.setFill(Color.BLUE);  
       
      //Performing intersection operation on the circle 
      Shape shape = Shape.intersect(circle1, circle2); 
      
      //Setting the fill color to the result 
      shape.setFill(Color.DARKSLATEBLUE); 
       
      //Creating a Group object  
      Group root = new Group(shape); 
         
      //Creating a scene object 
      Scene scene = new Scene(root, 600, 300);  
      
      //Setting title to the Stage 
      stage.setTitle("Intersection Example"); 
         
      //Adding scene to the stage 
      stage.setScene(scene);
      
      //Displaying the contents of the stage 
      stage.show(); 
   }      
   public static void main(String args[]){ 
      launch(args); 
   } 
}       

使用以下命令从命令提示符编译并执行保存的 java 文件。

javac IntersectionExample.java 
java IntersectionExample

执行后，上述程序将生成一个 JavaFX 窗口，显示以下输出：