Looking for example of Quil batch rendering...

[Stuart Hungerford]

Hi,

I've been perusing the Quil examples and other messages to this group for examples of using Quil in a pure batch-oriented (command line) style.  This may be a misuse of Quil (and Processing) so any advice would be very welcome.  

Essentially I'd like to create a large number of smallish Quil server-side renderings to PDF and PNG files without creating or referencing a GUI window or applet or frame etc. I'm starting to realize that may mean my sketch function cannot have a :draw function as that seems to create a frame.

I'm trying something like this:

(defn render []

  (let [graphics (create-graphics 1500 1000 :pdf "/tmp/foo.pdf")]

    (.beginDraw graphics)

    (smooth)

    (background 255)

    (ellipse 100 100 200 200)

    (.endDraw graphics)))

(defn  graphics []

  (sketch

    :title "my title" 

    :setup render))

With the PDF graphics I'm ending up with a zero-byte PDF file and with the :java2D graphics I'm getting crashes or GUI windows popping up. I'm using .beginDraw and .endDraw as my test code (run from the REPL) complains about not seeing the with-graphics macro.  I'm almost certainly missing something important here, particularly with handling the graphics context and ending the process and writing the graphics file.

Any advice much appreciated,

Thanks,

Stu

[Dan Bernier]

I'm only lurking on the quil forum, and haven't had time to play with it yet, so this may off base, but: I know that batch processing, or headless rendering, comes up a lot in the processing forums, and as far as I know, the answer is always that you can't do it. Rendering a bunch of files in a draw loop might be your best bet.

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