The only way to do that is to basically render the page and then analyze each path. The most common reason (beyond what you¹ve already mentioned) is that they are clipped out - meaning that there is a clipping path in place and these are outside of it.
Leonard On 10/20/14, 9:25 AM, "FDnC Red" <fdnc...@yahoo.com> wrote: >I'm working on finding all the horizontal and vertical >lines/paths/rectangles of a PDF file by analyzing the operands adn >operators. Most of the PDF files are drafted with Adobe InDesign. I'm >running into some problems where it appears that only certain things are >visible in the PDF but there are many lines and other things not visible >when Acrobat draws the PDF. Is there a way to tell which objects will be >visible when the PDF is rendered to the screen with Acrobat? > >Attached is pdf.jpg which is a cropped image of what Acrobat draws to the >screen. Also attached is wireframe.jpg which is what PitStop Pro shows >when wireframe viewing is enabled of the same region of the PDF as >pdf.jpg. You can see that there are dozens of lines, paths, rectangles, >etc that are not visible when Acrobat draws it to the screen. With my >line finding routine, i only want to find the lines that are visible. >(The original PDF is also attached) > >I've already filtered out (rightly or wrongly) things that are not >stroked, not filled, and clipping paths but there are still "tons" of >"invisible" objects. > >Thanks for your consideration. >Darren ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
