Re: [Jmol-users] Automatic font scaling - memory problems

[Robert H. <ha...@st...>]

> So unfortunately the feature is rather useless except for special
> purposes with experienced users aware of the problem and a lot of Java
> memory.
>

I think it's certainly quite usable for smaller molecules or systems that
don't involve lots of text.

What you are seeing is all those multiple fonts that have to be created.
Every scale requires a new font, so that can add up fast.



>
> Thinking about the problem I got the following ideas that might help to
> improve the labeling at different sizes:
>
> 1) What do you think about an adjustable maximum font size limit,
> preventing to generate extremely large fonts which need a lot of memory?
>

What would you propose for when the font size gets too large?


>
> 2) I dont't know how this is handled right now. But if it is not already
> done it might help to throw away intermediate font sizes.
>

Of course, even in one rendering there might be any number of font sizes;
some sort of smart caching might be possible.


>
> 3) One of the major drawbacks of the fixed font sizes is that the labels
> are covered with increasing zoom by the renderings (spacefill, cartoon
> etc.). This problem is solved with the automatically scaled fonts
> because the offset is scaled also. What do you think about a mixture of
> the two methods: don't scale the font automatically but only the offsets?
>

Sounds ugly to me.

I'm a bit reticent to fool with this just because it was enormously
difficult to get this to work right in the first place, and I feel a bit
burned out on it. But if there are simple things that can be done to make it
more usable or that we could test in that regard, I'm happy to try.

Bob




>
> Regards,
> Rolf
>
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-- 
Robert M. Hanson
Professor of Chemistry
St. Olaf College
1520 St. Olaf Ave.
Northfield, MN 55057
http://www.stolaf.edu/people/hansonr
phone: 507-786-3107


If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900