JavaFX Graphics

[vsquared]

The following demo shows some basic JavaFX graphics features. This demo should run in MacOS provided the seven JavaFX modules are in a folder called 'jars' in your sketch folder. I am less optimistic with Linux or Windows and would like to see if we can get it running in Thonny on these systems as well. Currently we have to obtain the JavaFX modules from Processing IDE. Would there be any way to package them with Py5 and make them accessible in Thonny? Hopefully the demo below will give you some idea of graphic output quality with the FX2D renderer.

import javafx.stage.Stage;

def settings():
  size(1,1,FX2D)

def setup():
  stage = javafx.stage.Stage()
  stage.setTitle("JavaFX Graphics Demo")
  stage.setResizable:true  
  pane = javafx.scene.layout.Pane()
  
# Text
  txt = javafx.scene.text.Text(130, 80, "Welcome to JavaFX!")
  txt.setFont(javafx.scene.text.Font(35))
  pane.getChildren().add(txt)
  
# Rectangle
  r = javafx.scene.shape.Rectangle(50, 130, 100, 50)
  r.setStroke(javafx.scene.paint.Color.color(0.0, 1.0, 0.0, 0.95))
  r.setStrokeWidth(5)
  r.setArcWidth(15)
  r.setArcHeight(15)
  pane.getChildren().add(r);
  
# Circle
  myCircle = javafx.scene.shape.Circle(250, 160, 40)
  myCircle.setFill(javafx.scene.paint.Color.DARKRED)
  myCircle.setStrokeWidth(6)
  myCircle.setStroke(javafx.scene.paint.Color.DARKSLATEBLUE)
  pane.getChildren().add(myCircle)

# Line
  ln = javafx.scene.shape.Line(400,150,500,150)
  ln.setStroke(javafx.scene.paint.Color.color(1.0, 0.0, 0.0, 1.0))
  ln.setStrokeWidth(10)
  pane.getChildren().add(ln)
  
  scene = javafx.scene.Scene(pane, 600, 400, javafx.scene.paint.Color.ALICEBLUE)
  stage.setScene(scene)
  stage.show()

Output MacOS:

[vsquared]

I finally got the demo to run in Linux. In order to achieve this I had to download and install jdk-23.0.2 into Thonny and then revise JAVA_HOME in Tools/Options:

Thonny config folder looks like this on my system:

[hx2A]

Would there be any way to package them with Py5 and make them accessible in Thonny?

Our conversations about FX2D have made me curious about the library and I have a few ideas I'd like to explore for how to do this. I wouldn't package it with py5 but there are other options that could be convenient and easy to use. I don't have time to pursue this now though; this will have to wait until the end of March at the earliest.

I finally got the demo to run in Linux. In order to achieve this I had to download and install jdk-23.0.2 into Thonny and then revise JAVA_HOME in Tools/Options:

I wonder why? What version of Java did you have before? What version of Java do the other working computers use?

[vsquared]

I wonder why?
Not sure, just what I had to do in order to get it to work. I _think the jdk and jfx modules have to be matched and they may not have been matched with jdk-17. The same version numbers seem to be used for both jdk and jfx and it appears that if they are not matched the demo won't run correctly (at least that's my current observation).

[hx2A]

I've learned that not all JDKs are the same. Some missing pieces that I guess their maintainers do not deem critical, and perhaps there is a need for a slimmed down JDK. I do wish they were more up front about these things though.