PDF rendering issues with Ruby-Processing

avianism

PDF rendering issues with Ruby-Processing

in Processing with Other Languages • 3 years ago

I'm having issues with PDF rendering with Ruby-Processing, and was wondering if anybody else has run into this issue. As far as I know, I'm using the latest version of Ruby-Processing (installed using gem), which uses Processing 1.0.9. I'm running Mac OS 10.6.

When attempting to render a PDF, a file is created at the correct location, but nothing is ever written to it. Also, a rendering window opens on-screen (it shouldn't), and the program then hangs.

Here's some simple code which reproduces the problem:

load_library :pdf
import "processing.pdf.*"
def setup
size(400, 400, PDF, "/Users/avianism/Desktop/filename.pdf")
end
def draw
background 128
line(0, 0, width/2, height)
puts "Finished"
exit
end

Has anybody else run into this issue?

Replies(2)

monkstone

Re: PDF rendering issues with Ruby-Processing

3 years ago

Well I would not start from there:-

I tried this

class PdfTest < Processing::App
load_library :pdf
import "processing.pdf.PGraphicsPDF"
def setup
render_mode(PDF)
begin_record(PDF, "/home/tux/line.pdf");
background 128
stroke 0
stroke_weight 5
line(0, 0, width/2, height)
end_record
puts "Finished"
exit
end
end
PdfTest.new(:width => 400, :height => 400, :title => "Pdf Test")

I don't think you want to be in draw, I don't know whether it is necessary to have a class it is just easier to specify size and renderer separately. I've never used the PDF renderer before with ruby processing. Although I thought initially this worked for me, I,m not so sure, because I get the same issue of being unable to write PDF file, it may be worth a bit more experimenting before we file a bug.

avianism

Re: PDF rendering issues with Ruby-Processing

3 years ago

monkstone; thanks. It turns out that both your code and the code in the original question worked correctly, but took an unexpectedly long time (several minutes) to run.

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