[Swftools-common] possible rounding issue when using "-s zoom="

[Ben Broadhurst]

Hi all,
I am having a minor issue with swfs being sized incorrectly. An example 
pdf is here:
http://ps1.sk.im/7/8/78826/PDFs/page_01.pdf

PDF size info:
width/height: 595.22x842 points (209.98x297.04 mm)

Our system converts pdfs to 450px wide, so I calculate the "-s zoom=" 
param with the formulae (450/widthInPoints)*72, this gives me a dpi of 
54.43365478

So pdf2swf get run like this:
pdf2swf -p 1 -s zoom=54.43365478 -s jpegquality=90 -S -z 
PDFs/page_01.pdf -o hiRes/page_01.swf

This generates an sdf that is 449 pixels wide. Not a huge difference I 
know, but it gives us headaches down the line. This happens in about 7% 
of PDFs that I convert, and when it does happen it's always 449 - never 
451 which is why I thought it may be a rounding issue.

In case it helps, I get the size info out using pdf2text 
(www.pdftron.com) using the command line:
pdf2text --pages 1 --pageinfo PDFs/page_01.pdf

which spits out:
595.22, 842, 0, 0, 595.22, 842, 0, 0, 595.22, 842, 180

which is page    width     height     mw     mh     pw     ph    
cropLeft     cropBottom     nw     nh     rotation

These dimensions match what I get from Acrobat as well.

Sorry for the long email - I have been trying to fix this for what feels 
like my entire natural life.

Cheers all,
ben.