[Therion] Scrap limits

[Benedikt Hallinger]

Maybe another question:
Assume a large cave with thousands of scraps.
When i make a thconfig file sourcing all that data, but using "select" 
statements i only select partial data,
does the metapost limit apply to the whole dataset or just the scraps 
covered by the select command?


Am 2017-11-28 22:19, schrieb Benedikt Hallinger via Therion:
> Hello Martin,
> is the blow limit of 4096 scraps still valid in the current version?
> Or is it already fixed so we can use more scraps?
>
>
>
>>On Tue, Dec 1, 2009 at 5:26 PM, Carl Magnuson <magnu213 at umn.edu> wrote:
>>> It looks like the solution is to issue the following metapost command:
>>> warningcheck := 0;
>>
>>Indeed. The new limit will be 32768 and could not be increased further
>>in Metapost itself.
>>
>>The solution would be modification of how therion manages metapost
>>pictures (currently they are stored in files data.1 to data.4000, with
>>files data.4001 to data.4095 reserved for pattern definitions). This
>>numbering scheme could be modified to allow more file name prefixes
>>and consequently theoretically unlimited number of scraps processed by
>>metapost.
>>
>>On the other hand there is still pdfTeX limit which would not allow
>>much more scraps. PdfTeX uses internal registers for scraps
>>referencing (scrap data is included only once in pdf file and can be
>>referenced on multiple pages). You could avoid pdftex limit by using
>>SVG output (if SVG viewers would process large number of internal
>>references).
>>
>>In the longer-term future (a few years) I would like to use metapost
>>as a library instead of external metapost executable, which would
>>solve the problems with temporary files (and other problems as well).
>>
>>> However adding it in a
>>> code metapost
>>> warningcheck := 0;
>>> endcode
>>> block seems to have no effect, mpost still fails on more then 4096 
>>> scraps.
>>
>>Therion currently inserts warningcheck:=1; before scraps without good
>>reason, so it will be fixed soon.
>>
>>If the new warningcheck setting would work for you, I would prefer not
>>to modify current file numbering scheme for metapost pictures and have
>>it fixed later with implementation of metapost library.
>>
>>Martin
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