Re: JavaFX 8 - Printing 3d scene

[Phil Race]

This is analagous to the software pipeline where 3D rendering - even to 
screen  - is not supported.

I can't see that we documented it, but we were aware that printing 3D 
was out-of-scope for FX 8.
FWIW I think these features were overlapping in development and printing 
was largely done
before 3D was complete.
If you are running an accelerated (D3D or OpenGL) pipeline and the 
Node.snapshot(..) function can grab
the 3d node  perhaps we could implement printing the scene in terms of that.
So what you get would be whatever snapshot would do for you.  In the 
interim you could do that yourself.

-phil.


On 11/11/2014 7:29 AM, Kevin Rushforth wrote:
3D is not supported for printing. I don't know whether this is 
documented (it should be if it isn't), but it is a known limitation of 
the current implementation which uses Java2D to render.

-- Kevin


Scott Palmer wrote:
I suggest you file a bug with a reproducible test case at
https://javafx-jira.kenai.com/
If the 3D node will render to an image, then it should also be printable
directly.

Scott

On Mon, Nov 10, 2014 at 8:16 PM, Cheryl Long <clong9...@gmail.com> 
wrote:

I posted the following question on Stack Overflow and it was 
suggested that
I ask it here.

I am trying to use the JavaFX 8 printing API and I am running into 
problems
when I try to print any scene/node that contains any sort of 3D 
content. I
have been searching both here and other sites for an answer and haven't
been able to find anything to help.

If the node contains only 2D content, the scene will print on my 
selected
printer without issue. But if I add a single 3D object to the scene, 
the
whole thing fails to print - without any error but without any 
content. If
I am printing to a printer, a blank page is "printed" and if I am 
printing
to a document printer, I get an empty document.

I have tried using the AWT printing mechanism to convert the node to a
WritableImage and then to a BufferedImage for printing. This works 
in that
it prints but we aren't happy with the quality that we get from it.

My print caller is fairly standard at this stage -

private void doPrintFX() {
    Printer printer = Printer.getDefaultPrinter();
    PageLayout pageLayout = printer.createPageLayout(
            Paper.A3, PageOrientation.LANDSCAPE,
Printer.MarginType.DEFAULT);

    final double scaleFactor =
computeScaleFactor(pageLayout.getPrintableWidth(),
            pageLayout.getPrintableHeight(),
            sceneNode.getBoundsInParent().getWidth(),
            sceneNode.getBoundsInParent().getHeight());
    if (scaleFactor != 0) {
        sceneNode.getTransforms().add(new Scale(scaleFactor, 
scaleFactor));
    }

    PrinterJob job = PrinterJob.createPrinterJob(printer);
    if (job != null) {
        System.out.println("Printing to " + 
job.getPrinter().getName());
        boolean success = job.printPage(pageLayout, sceneNode);
        if (success) {
            job.endJob();
        }
    }}

I have scaled back the node to be a very simple scene containing a 
couple
of rectangles and a cylinder. The code I am currently using is:

    Cylinder cylinder = new Cylinder(50, 150);
    cylinder.setLayoutX(250);
    cylinder.setLayoutY(100);
    canvas.getDrawingPane().getChildren().add(cylinder);

    Rectangle item = new Rectangle(50, 50, 100, 50);
    item.setStroke(Color.BLACK);
    item.setFill(null);
    canvas.getDrawingPane().getChildren().add(item);

    item = new Rectangle(75, 75, 100, 50);
    item.setStroke(Color.BLACK);
    item.setFill(null);
    canvas.getDrawingPane().getChildren().add(item);

The canvas.getDrawingPane is a Pane and is what is being sent to the 
print
function.

Can anyone advise what might be wrong with what I am doing? Does the 
JavaFX
print API support printing of 3D nodes?

Thank you.