Hello,
I just saw that some objects I have in some documents are exported into a PDF in a different way I expected. I attach a simple circle.
As a PDF opening it in Adobe Illustrator, it is shown as "open path".
As an AI opening it there it is shown as "closed path".
Is there any hint in this objects that shows it could be understood as open path by illustrator in a PDF?
(I send some files often as AI or PDF to other creators or customers using Illustrator, so it's not about that I should not use or open it in Illustrator...)
testcircle.zip
What PDF setting are you using to publish your PDF in Draw?
I'll download your file and take a look, however you seem to have an easy solution simply send your Illustrator clients AI files.
I have never had a closed path in Draw publish to a print based setting PDF in Draw show up as an open path in ANY RIP.
If I remember this correctly waaay back when CorelDRAW was introducing PDF it was intended as an export filter for output not for editing in graphic applications. The same approach was taken earlier with the EPS filter. In my experiance Corel has never wavered from that approach from either filter.
A little information on PDF export only, X3 does not support transparency in spot color, X4 does, complex fills and live transparency was not supported until 2019.
Illustrator does not support opening PDF ffiles from CorelDRAW that support any high end complex fills and transparency.
yes, I could send an AI, but sometimes it's also better to send a PDF. I tested the prepress and the editing PDF option, both in RGB, but should be the same in CMYK and other PDF export options.
When I open it in Illustrator I see the curve is open, also when I open it in Infinity designer.
When I open the PDF in CorelDraw again, it's closed :).
So my question is less about any workflow or CorelDraw functionality or bug, more about what could be special about the circle in the attachment so that it is exported as an open curve as PDF while many other shapes I create or use are just exported fine as closed path?
this seems somehow connected to any object that has a fill but no outline?
this is then read as open path in Infinity and Illustrator.
Does your RIP see the circle in the PDF as an open path or is it only Illustrator?
What version of Illustrator? Is it all versions of Illustrator?
What version of Affinity, I assume you meant Designer?
As I said in my previous post CorelDRAW PDF export was never intended as an export for edit filter. I have seen CorelDRAW PDF's be edited in dedicated RIP, Imposition and Trapping solutions but never 100% successful in Illustrator.
I had a quick peak at your file earlier and noticed it registered what may be a non default miter limit but I need to spend more time with it but as this was our date day this morning I didn't have time. I only have Adobe CS 5.0 and 5.5 and I have zero interest in even attempting to install it.
it is also in Inkscape, and in Illustrator CS4 and in the current Infinity Designer, I guess it's just like that and not a thing of the used software.
It seems that the start/end node is not a single node but at least two :). You can drag the other one out of the node in Illustrator, Inkscape, Designer...
I am not an expert in printing, I only want to deliver PDF files to customers or other creators. And of course I would like to have CorelDraw exporting the PDF with the shapes as they are and not different.
One question would be also if you or others just can reproduce it by creating a circle with fill and without outline and save as any PDF in CorelDraw and open it in any other known vector program.
(to defend CorelDraw I may add that when I create such a circle as described above and open the Illustrator-created PDF in Inkscape and Designer, there it's also TWO nodes the start/end node created by Illustrator - when I open the Illustrator-PDF in CorelDraw it's fine though)
so after all it seems that some vector programs can't read the PDF correctly concerning shapes with fill only and its start/end node and think it's more than one node. Am I the first person to notice this or is this just known and not a problem at all? Perhaps it's ok for the printing when the start/end node is just an overlaying double node. But not perfect either.
I looked at your file and then decided to recreate the circle using the ellipse too and converting to curves. BTW Illustrator CS 4 is ancient. Affinity Designer 2.4 I believe is the latest and greatest, from the forums I understand that the Designer PDF filter is good but not perfect. I don't use Designer, I testes V1 and never bought it.
Not knowing if this is how you created your circle I did it how I usually do it. My circle is a perfect circle but in CMYK.
Your circle shows as a closed curve in the properties docker, it has a miter limit of 5 (not the default 45) and the fill winding is checked (not the default of winding unchecked. Your circle dimensions show as 7.238 wide x 7.239 high.
My system using a metric document created from the new document dialog has a miter limit of 45, no winding on the fill and the object as a closed fill.
I've sent along a PDF from my system and file for you to test. Adobe has different specifications for PDF and EPS, specifications for Illustrator editing and for document distribution. Corel does not conform to the editing specifications. I expect that some software publishers either pay Adobe for the editing specification if it is available or they back engineer the file format. I expect the latter as there are so many issues with editing PDF files from different publishers.
PDF
thank you very much for the file. The circle is an open path in Infinity Designer, Inkscape and Illustraror CS4. The node at the top is not a start/ending node but are actually two nodes over each other (in all three programs).
Yes, of course CorelDraw can not do anything, also because of specifications. But that a node becomes two nodes is not because of editing spefication probably.
but good to know that it's still the case in the new version of CorelDraw.
by the way also in Illustrator as mentioned there is some problem with this. also when I do vectorizing there I end with shapes with such open paths and double nodes. But I never had any problem from customers. So I guess this is just something found very often but not a problem for printing. Perhaps this is also the reason why I don't find any "open paths preflight" in Acrobat.