How to rotate shapes in javafx

Question

I'm looking for a simple way to rotate shapes in javafx. Right now I've a scene with multiples shapes and I want to use a rotate button to select one of them and set a rotation of a specified angle, but I've no idea how to do that. Can anyone help? Thanks in advance!

See [*Animation Basics*](http://docs.oracle.com/javase/8/javafx/visual-effects-tutorial/basics.htm). — trashgod, Jul 14 '17 at 11:28
You can go [here](https://stackoverflow.com/questions/44734430/memory-leak-in-javafx-indefinite-timeline/44838669#44838669) to see an implementation of lines being rotated about one end like the hands of a clock. — SedJ601, Jul 14 '17 at 15:38

score 4 · Accepted Answer · edited Jun 20 '20 at 09:12

4

Is a simple request with many implementation alternatives, and some solutions are readily available Code:

 Text text = new Text("This is a test");
 text.setX(10);
 text.setY(50);
 text.setFont(new Font(20));

 text.getTransforms().add(new Rotate(30, 50, 30));

The documentation

Some tutorial

Adding more is difficult given the lack of your code

edited Jun 20 '20 at 09:12

Community

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1

answered Jul 14 '17 at 13:09

Francesco

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3
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My problem is how can i get the shape from the many ones shapes that are on the scene and then use the Rotate transformation. – Domenico Santoro Jul 14 '17 at 15:15

score 1 · Answer 2 · answered Jul 14 '17 at 15:19

1

I was only able to get the button rotate with this code:

    @FXML
private void rotateButtonHandle(ActionEvent event) {
    //handle for rotate
    rotateButton.setOnMouseClicked((MouseEvent t) -> {
        System.out.println("X " + (t.getX()));
        System.out.println("\nY "+(t.getY()));
        Node shape = (Node) t.getSource();
        shape.getTransforms().add(new Rotate(20.0,t.getX(),t.getY()));
    });   

}

I dont know how to get the shape in the scene.

answered Jul 14 '17 at 15:19

Domenico Santoro

147
3
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Doesn't that just keep adding more and more transformations to the shape, so it would eventually get sluggish or run out of memory? – digitig Jul 03 '19 at 00:37

How to rotate shapes in javafx

2 Answers2