Cache operators enable storing particle animation in memory or to a file and then playing it back from the stored data. By avoiding the need for extensive calculations during playback, the process can be sped up considerably.
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Cache Operator
The Cache operator records and stores particle states to memory. This is particularly useful with large or complex particle systems, where playback, and particularly backtracking, are slow because of the large amount of processing required.
Cache Disk Operator
The Cache Disk operator works much like the Cache operator, except that it lets you store the cache in a disk file separately from the MAX file.
Cache Selective Operator
The Cache Selective operator works much like the Cache operator except that it lets you exclude certain types of data from the cache. Also, as with the Cache Disk operator, you can specify post-cache operators, and the cache must be updated manually.