Heh. Okay, glad that made sense, but as discussed in all the other resources, yes, context flippedness is a piece of _metadata_ orthogonal from the CTM. You may consult it to get the high level notion of which way should be considered "up".
On Fri, May 28, 2010 at 12:22 AM, Graham Cox <graham....@bigpond.com> wrote: > Hallelujah!!! > > Thanks Stephen, that's the piece of the puzzle I was missing. I was > assuming (or misinterpreting) that passing flipped:YES for the > NSGraphicsContext ACTUALLY FLIPPED the context, not just informed it that > the context had been flipped. > > I found I had to set the CTM after the CGPDFContextBeginPage - looks like > that might be resetting it, but basically, it works, I now get a right-way > up PDF file. > > Now I know my source data really is right-side up, I can figure out the > second part which is making sure images that embody it DRAW right-side up. > > thanks again, greatly relieved! > > --Graham > > > > On 28/05/2010, at 5:11 PM, Stephen J. Butler wrote: > > > CGContextTranslateCTM( pdfContext, 0.0, size.height ); > > // Now "flip" the y-axis so that it increases downwards > > CGContextScaleCTM( pdfContext, 1.0, -1.0 ); > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/kenferry%40gmail.com > > This email sent to kenfe...@gmail.com > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
