Slow line draw speed

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   Hi,

We recently implemented a direct PDF save to our CAD package. The main reason was so we could get away from the PDF printer drivers, and some of our users wanted Layers maintained.

When compared to CutePDF and PDFill, the Debenu QuickPDF line draw is very slow. 

Time trials drawing 120,000 lines:

Debenu DPLDrawLine : 130 seconds
PDFill : 3 seconds
CutePDF : 3.5 seconds

I'm using a very tight loop in my test - calling DebenuPDFLibraryDrawLine(instanceID, StartX, StartY, EndX, EndY); 120,000 times. 
Is there anyway to speed it up? Getting a lot of complaints from our users. 

Is there a DrawLines routine? I might be able to send it connected lines and eliminate the vast majority of calls.

Otherwise, the library is awesome.

Thanks,
Matt

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matt2000 Members Profile Find Members Posts Beginner Joined: 17 Dec 14 Location: Spokane Status: Offline Points: 10	Post Options Post Reply Quote matt2000 Report Post Thanks(1) Quote Reply Topic: Slow line draw speed Posted: 17 Dec 14 at 4:09PM
	Hi, We recently implemented a direct PDF save to our CAD package. The main reason was so we could get away from the PDF printer drivers, and some of our users wanted Layers maintained. When compared to CutePDF and PDFill, the Debenu QuickPDF line draw is very slow. Time trials drawing 120,000 lines: Debenu DPLDrawLine : 130 seconds PDFill : 3 seconds CutePDF : 3.5 seconds I'm using a very tight loop in my test - calling DebenuPDFLibraryDrawLine(instanceID, StartX, StartY, EndX, EndY); 120,000 times. Is there anyway to speed it up? Getting a lot of complaints from our users. Is there a DrawLines routine? I might be able to send it connected lines and eliminate the vast majority of calls. Otherwise, the library is awesome. Thanks, Matt

matt2000 Members Profile Find Members Posts Beginner Joined: 17 Dec 14 Location: Spokane Status: Offline Points: 10	Post Options Post Reply Quote matt2000 Report Post Thanks(0) Quote Reply Posted: 18 Dec 14 at 1:02PM
	Update...I now collect connected lines and use the AddLineToPath/DrawPath method. This sped it up considerably. That fixes my immediate problem. Andrew got back to me and mentioned passing a string contain functions codes to a stream (QP.SetContentStreamFromString). This looks promising, but I haven't found a spec on the codes or a sample project. Does someone have a link to a project or documentation? Many thanks to Andrew at Debenu - great support. Matt