Darren, Leonard Rosenthol wrote > 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.
Another very common cause is that the line is drawn... and then covered by something else. The one page in your PDF has an extremely large content stream, more than 5MB uncompressed, so it is very likely that some things drawn in it are covered by others. To check for this, you'll have to parse it, remember all the objects you are interested in, and check whether any newly drawn object covers any of them, partially or completely. I.e. you'll basically have to render the page, just like Leonard said. ;) Regards, Michael -- View this message in context: http://itext-general.2136553.n4.nabble.com/How-to-determine-what-is-visible-tp4660471p4660473.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ 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
