mindbrix
commented
12 years ago Hi Joe. Greetings from London!
PDF rendering will always be slower than loading a bitmap. If performance is an issue I'd suggest caching the rendered UIImage objects in an NSDictionary.
Also, I'd recommend doing all performance testing on an actual device, as the simulator results can be very misleading.
Best, Nigel.
On 23 February 2012 13:21, jacloven < reply@reply.github.com
wrote:
Hi Nigel,
i tried UIImage+PDF and it worked well.But when i tried to compare with png image on consumption of time, pdf is 6 or 7 times than png. pdf is YingYang.pdf in your project, png has the same dimesions(480*479), iOS 5.0 simulator. I Modified your PDFView.m file like this:
NSLog(@"Start"); for (i=0; i<LoopTimes; i++) { CGContextDrawPDFPage( ctx, page1 ); //png is the same method like this } NSLog(@"End");
LoopTimes = 10, 100 or 1000, Do you have any advice on drawing efficiency?
Joe(From China, sorry for my poor english...)
Reply to this email directly or view it on GitHub: https://github.com/mindbrix/UIImage-PDF/issues/3
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Hi Nigel,
i tried UIImage+PDF and it worked well.But when i tried to compare with png image on consumption of time, pdf is 6 or 7 times than png. pdf is YingYang.pdf in your project, png has the same dimesions(480*479), iOS 5.0 simulator. I Modified your PDFView.m file like this:
NSLog(@"Start"); for (i=0; i<LoopTimes; i++) { CGContextDrawPDFPage( ctx, page1 ); //png is the same method like this } NSLog(@"End");
LoopTimes = 10, 100 or 1000, Do you have any advice on drawing efficiency?
Joe(From China, sorry for my poor english...)