Re: [Texmacs-dev] slow images..... and slight improvement hack

[Joris van der Hoeven]

Hi Michael,

On Wed, Sep 14, 2011 at 04:10:24PM +0200, Michael Lachmann wrote:
> I'm not sure if you already went through the whole pile of texmacs-dev 
> mails... I just wanted to see what you think about the hack I posted below. I 
> have been using this for around 1.5 months, and it seems to work quite well. 
> Images load MUCH faster than before. I think that the cache handling is 
> probably better handled from inside TeXmacs instead of by an external script 
> as I do. In any case I think it is a good idea not to have the image 
> conversion ps-to-png hard-coded into TeXmacs. 
> (Instead of what is written below, because of feedback from the mailing list, 
> I put the image cache in .TeXmacs/system/cache/images, and the CRC is 
> separated into letters with a directory for each letter. Its current size for 
> me, after 1.5 months of use is 13M. )

Yes, I agree that we should use an image cache for this kind of thing,
even though more control over the cache would indeed be a good thing.
Could you send me a complete patch, if possible with doing the caching
from inside TeXmacs and using a safe mechanism for cache names?
Notice also that the -dEPSCrop option of ghostscript does not work
if there is a non trivial offset. For this reason, I just hacked
the code so as to use ImageMagick in that case.

Best, --Joris