JavaFX 中二维对象的各种操作是什么?
JavaFX 支持对二维对象进行三个操作,即 - 并集、差集和交集。
并集操作 - 此操作将两个以上形状作为输入,并返回它们占据的区域。
交集操作 - 此操作将两个以上形状作为输入,并返回它们之间的交集区域。
差集操作 - 此操作将两个以上形状作为输入。然后,它返回第一个形状的区域,不包括第二个形状所重叠的区域。
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; import javafx.scene.text.Font; import javafx.scene.text.FontPosture; import javafx.scene.text.FontWeight; import javafx.scene.text.Text; public class JavaFXOperations extends Application { public void start(Stage stage) { Font font = Font.font("verdana", FontWeight.BOLD, FontPosture.REGULAR, 12); //Drawing circles for union operation Circle shape1 = new Circle(65.0f, 135.0f, 50.0f); Circle shape2 = new Circle(130.0f, 135.0f, 50.0f ); //Union operation Shape union = Shape.union(shape1, shape2); union.setFill(Color.RED); Text label1 = new Text("Union Operation"); label1.setFont(font); label1.setX(40); label1.setY(230); //Drawing circles for union operation Circle shape3 = new Circle(250.0f, 135.0f, 50.0f); Circle shape4 = new Circle(325.0f, 135.0f, 50.0f ); //Intersect operation Shape intersect = Shape.intersect(shape3, shape4); intersect.setFill(Color.RED); Text label2 = new Text("Intersect Operation"); label2.setFont(font); label2.setX(225); label2.setY(230); //Drawing circles for union operation Circle shape5 = new Circle(445.0f, 135.0f, 50.0f); Circle shape6 = new Circle(510.0f, 135.0f, 50.0f ); //Union operation Shape subtract = Shape.subtract(shape5, shape6); subtract.setFill(Color.RED); Text label3 = new Text("Subtract Operation"); label3.setFont(font); label3.setX(420); label3.setY(230); //Setting the stage Group root = new Group( shape1, shape2, shape3, shape4, shape5, shape6, union, intersect, subtract, label1, label2, label3 ); Scene scene = new Scene(root, 600, 300); stage.setTitle("2D Operations Example"); stage.setScene(scene); stage.show(); } public static void main(String args[]){ launch(args); } }
输出
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