JavaFX 8 - Printing 3d scene

[Scott Palmer]

I'm curious.  If printing in JavaFX is implemented via Java2D then why
isn't it matching what "worked" for the OP?

    "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."

Presumably with the appropriate transform in the SnapshotParameters the
image resolution can be made to match the printer.  If memory is a concern,
it could be done in strips by manipulating the SnapshotParameters viewport.
Perhaps I am missing some threading issue that makes this impossible?


Scott

On Tue, Nov 11, 2014 at 1:13 PM, Phil Race <philip.race at oracle.com> wrote:

> 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 <clong9993 at 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.
>>>>
>>>>
>