[SPAM] Re: [SPAM] Re: CTM + re
mkl <[email protected]>
| Newsgroups | gmane.comp.java.lib.itext.general |
|---|---|
| Message-ID | <[email protected]> |
Darren, FDnC Red wrote > I guess another way of saying what you said is that the points returned > from the content stream are Cartesian points. I keep forgetting PDF puts > 0,0 in the BL instead of TL. PDF does not automatically put the origin (0,0) in the bottom left, it may be anywhere, even way off-screen, given appropriate crop box or media box settings. It merely is quite common for PDF producers to put the origin there. PDF does enforce that y coordinates increase bottom to top (at least in the default user space, i.e. before transformations); this makes having the 0 y coordinate at the bottom a fairly natural choice. > So in order to calculate all four points for the rectangle I should be > able to do something like this, right? > > [...] Then do the matrix math on the TL points then the BR points. Yes, but because widths and lengths may be negative I would not call a point 'upper left' or 'lower right' without doing some normalization before to enforc the names to be appropriate. Regards, Michael -- View this message in context: http://itext-general.2136553.n4.nabble.com/CTM-re-tp4660398p4660407.html Sent from the iText - General mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that Matters. http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk _______________________________________________ iText-questions mailing list [email protected] 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