Eric Mootz to the rescue again:
http://www.mootzoid.com/wb/pages/documentation/emtools.php#FileExists

--------------------------------------------
Eric Thivierge
http://www.ethivierge.com


On Sat, Nov 10, 2012 at 3:13 AM, Jules Stevenson
<droolz...@googlemail.com>wrote:

> Thanks Guys for putting me on the right track, see attached, works a treat.
>
> Jules
>
>
> On Fri, Nov 9, 2012 at 3:39 PM, Jules Stevenson 
> <droolz...@googlemail.com>wrote:
>
>> Vincent, thinking about this more, I'm not so sure this will work since
>> i'm working on a frozen cloud - there is no emitter, so there will always
>> be a point position. Guillaume, I shall test :).
>>
>>
>> On Fri, Nov 9, 2012 at 3:30 PM, Jules Stevenson <droolz...@googlemail.com
>> > wrote:
>>
>>> Nice, thanks Guys, vincent, that looks good - will try :)
>>>
>>>
>>> On Fri, Nov 9, 2012 at 3:27 PM, Vincent Ullmann <
>>> vincent.ullm...@googlemail.com> wrote:
>>>
>>>>  perhabs you could use 2 Cache-on-file-Nodes.
>>>>
>>>> [1. Cache on File Node (Reading)] ---> Execute
>>>> [Get Particle Position] - [Array from Set] - [Array Size] - [Test > 0]
>>>> - [Set Data (Sim = True)]
>>>>
>>>> [IF (sim = true)]
>>>> [..... all your Nodes....]
>>>> [2. Cache on File Node (writing)]
>>>>
>>>> PS: Need some ICE-Tree-Plugin for eMails
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Am 09.11.2012 16:15, schrieb Guillaume Laforge:
>>>>
>>>> Without a custom node, the only solution is maybe to re-compute the
>>>> particle age each frame (using your own attribute) and compare with the one
>>>> from the file. If it doesn't match, execute the simulated branch and write
>>>> it to disc. Assuming that the icecache got an attribute like age of course.
>>>>
>>>>  Just an idea,
>>>>
>>>>  Guillaume
>>>>
>>>>
>>>>
>>>> On Fri, Nov 9, 2012 at 10:08 AM, Alan Fregtman <alan.fregt...@gmail.com
>>>> > wrote:
>>>>
>>>>> We don't have a "File Exists" node -- that'd be cool to have though --
>>>>> so I personally don't see how you could do this with factory nodes
>>>>> presently.
>>>>>
>>>>> That said, nothing stops you from writing a C++ ICE node that checks
>>>>> for files
>>>>> existing.
>>>>>
>>>>> On Fri, Nov 9, 2012 at 8:09 AM, Jules Stevenson
>>>>> <droolz...@googlemail.com> wrote:
>>>>> > Hey all, is it possible using the cache on file node to switch from
>>>>> reading
>>>>> > to writing if a file on disk is *not* found? (similar to the awesome
>>>>> cache
>>>>> > tools in emPolygonizer). Having toyed with this, I'm thinking not,
>>>>> since ice
>>>>> > doesn't seem to give us any real access to the cache gubbins or on
>>>>> disk
>>>>> > info.
>>>>> >
>>>>> > Tentatively thinking about writing an ice node to do this, but would
>>>>> rather
>>>>> > not go through this pain if it  can be done with factory nodes.
>>>>> >
>>>>> > Many thanks,
>>>>> >
>>>>> > Jules
>>>>>
>>>>
>>>>
>>>>
>>>
>>
>

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