[therion] snow and ice

Olly Betts olly at survex.com
Thu Sep 30 17:49:06 CEST 2004


On Thu, Sep 30, 2004 at 04:58:24PM +0200, Stacho Mudrak wrote:

>>> >There doesn't seem to be a way to make an area "snow and ice" (the UIS
>>> >symbol for either is stars).
>>> >
>>> >Does this entail writing some metapost?  Has anyone already done it?
>
>>
>> Yes, and nobody did it until now. Until now, we have only ice point
>> symbol. So we need new type (for point and for area). I suggest to add
>>
>> point snow
>> area snow
>> area ice
>>
>> Or any does your symbol set make a difference between snow, snow-and-ice
>> and ice? Coding of these symbols is not so complicated.


The UIS set doesn't distinguish - it's all just stars.  I'm not sure
about other symbol sets.  In reality, the difference is often arbitrary
and whether a particular area is best described as ice or snow or a
combination varies with time.

It looks like mpost/thArea.mp is the file for it, and I can see the
definition of p_ice_UIS in mpost/thPoint.mp, which presumably is a
single star.  But how do I fill an area with that tesselated?

Cheers,
    Olly





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