14.10(Display a cylinder)
Write a program that draws a cylinder, as shown in Figure 14.45b.
You can use the following method to set the dashed stroke for an arc:
Display a random matrix
arc.getStrokeDashArray().addAll(6.0, 21.0);
Write a program that draws a cylinder, as shown in Figure 14.45b.
You can use the following method to set the dashed stroke for an arc:
Display a random matrix
arc.getStrokeDashArray().addAll(6.0, 21.0);
import javafx.application.Application; import javafx.scene.Node; import javafx.scene.Scene; import javafx.scene.layout.Pane; import javafx.scene.paint.Color; import javafx.scene.shape.Arc; import javafx.scene.shape.Ellipse; import javafx.scene.shape.Line; import javafx.stage.Stage; import java.util.ArrayList; public class Exercise_10 extends Application { // Top ellipse center point private static final int CENTER_Y = 75; private static final int CENTER_X = 150; private static final int RADIUS_X = 100; private static final int RADIUS_Y = 50; private static final int CYLINDER_HEIGHT = 200; @Override public void start(Stage primaryStage) { Pane pane = new Pane(); ArrayList<Node> shapes = new ArrayList<>(); // top ellipse Ellipse ellipse = new Ellipse(CENTER_X, CENTER_Y, RADIUS_X, RADIUS_Y); ellipse.setFill(Color.rgb(0, 0, 0, 0)); // opaque fill ellipse.setStroke(Color.BLACK); shapes.add(ellipse); // bottom - top-half circle (dashed lines) Arc arc1 = createArc(0, 180); arc1.getStrokeDashArray().addAll(6.0, 21.0); // making the arc dashed shapes.add(arc1); // bottom - bottom-half circle (non-dashed lines) Arc arc2 = createArc(180, 180); shapes.add(arc2); // Creating two lines to connect the upper and lower ellipses Line line1 = new Line(CENTER_X - RADIUS_X, CENTER_Y, // starting point arc2.getCenterX() - RADIUS_X, arc2.getCenterY()); // ending point shapes.add(line1); Line line2 = new Line(CENTER_X + RADIUS_X, CENTER_Y, arc2.getCenterX() + RADIUS_X, arc2.getCenterY()); shapes.add(line2); pane.getChildren().addAll(shapes); Scene scene = new Scene(pane, RADIUS_X * 3, CYLINDER_HEIGHT + 150); primaryStage.setScene(scene); primaryStage.setTitle("Cylinder"); primaryStage.show(); } private Arc createArc(double startAngle, double length) { Arc arc = new Arc(CENTER_X, CENTER_Y + CYLINDER_HEIGHT, RADIUS_X, RADIUS_Y, startAngle, length); arc.setFill(Color.rgb(0, 0, 0, 0)); // opaque fill arc.setStroke(Color.BLACK); return arc; } public static void main(String[] args) { Application.launch(args); } }
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