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2003.11.21 21:25 "tiff2pdf contribution", by Leonard Rosenthol
At 9:21 AM -0800 11/21/03, Finlayson, Ross wrote: > If you could explain the /Rotate field that would be good. I think > there should be different rotate flags for view and print. It tells a PDF renderer what degree to rotate the content. Some renderers due this as a pre-transform on the contents, so do a post -rasterization rotation, etc. Doesn't matter - but it DOES effect all rendering as per the spec. If you want something different for view vs. print, then you'd want to avoid /Rotate and use PDF 1.5 optional content and CTM's. > The /Rotate would be sufficient for rotating the page, but there are > also the four more options to flip or mirror the page. Not as far as PDF is concerned. /Rotate is there to simply allow people (or software) to fix landscape pages that were done as portrait (or vice versa). Those functions are handled by CTM... > I've implemented it but it doesn't work right on tiled images with > TIFF orientation > 4. I have here a tiled JPEG that has orientation > 4 and each row is flipped. I'm wondering in what ways people > implemented TIFF orientation with tiled images. Using CTM is the best way... Leonard -- --------------------------------------------------------------------------- Leonard Rosenthol <mailto:leonardr@pdfsages.com> Chief Technical Officer <http://www.pdfsages.com> PDF Sages, Inc. 215-629-3700 (voice) 215-629-0789 (fax)