2009

(see above). If Use At is set to Viewport/Render, it uses lower of the two
Integration Step values. For example, if Viewport is set to Half Frame, and
Render to 1/8 Frame, the sampling rate would be eight per frame.
■ Every Nth Frame The software caches animation data at frame intervals
specified by the N value, below.
N Determines the frame interval for caching when Sampling (above) is set to
Every Nth Frame. Default=5.
For example, with N set to the default value of 5, the cache stores animation
data for every fifth frame.
Cache Test Results When caching particle data, this caches the results of test
actions as well. Default=on.
This is important if Cache is used as a local operator, and the next event
doesn’t have a Cache operator. For the next event to work properly, it should
receive particles from the current event. Those particles result from the activity
of a test action. The Cache operator can record the test activity to play it back
later.
If the Cache operator is used as a global operator, there is no need to cache
the test results. This is because the system has cache data for every event, and
is able to jump to an arbitrary frame without the need for test results.
Save Cache with File When on, the software Includes the cached data with
scenes that you save to disk. This can significantly increase the size of saved
files, but saves the time of recalculating the particle motion upon reloading
the file. Default=off.
Normally, the cache data is saved only in disk files that you create with the
Save or Save As commands. You can also instruct the software to include
cached data with other types of files using the two following options.
Save Cache with Hold Saves cached data in the Hold file, created with Edit
menu > Hold. Default=off.
Manual Update group
These controls let you update or clear the cache manually within a frame
range, or clear the entire cache.
Update Calculates particle motion within the current range (defined below)
and stores it in the cache, replacing any existing cached data. Available only
when Range is set to Active Segment or Custom.
During the update, the software temporarily closes Particle View and displays
a Cache Update Progress bar, while moving the time slider through the cached
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