Create or import nCaches
 
 
 
Note

You can create single or multiple nCaches for your Nucleus objects or fluid effects, each of which can be comprised of a single frame, multiple frames, or a range of frames. If you create more than one nCache for a Nucleus object or fluid effect, you can then blend its caches to create new simulations and effects. See Blend and set the weighting of nCaches from the Attribute Editor.

NotenCache one nParticle object at a time. Currently, selecting, and then nCaching more than one nParticle object in your scene at the same time may produce undesirable results.

In addition to creating new nCaches, you can also import nCaches that you have previously created. Importing nCaches will not override or replace any existing cache data attached to your objects.

To create a new nCache

  1. Select the Nucleus or fluid object(s) for which you want to create an nCache.
  2. Depending on the type of object you are nCaching, do one of the following:
  3. (Optional) If an nCache file with the same name already exists in the directory specified in the Create nCache Options or Create Fluid Cache Options window, the Create Cache Warning message appears.

    Do one of the following:

    Your objects’ simulations are cached using the Create nCache Options or Create Fluid Cache Options window’s current settings. See nCache > Create New Cache or Fluid nCache > Create New Cache.

    Single or multiple .mc cache files and an .xml description file are generated and stored in the directory you specified in the Create nCache Options or Fluid Cache Options window. cacheFile nodes (named nObjectShape#Cache# by default) are also added to your objects, and any existing nCache nodes are disabled so that you can see only the new caches playback.

    NoteWhen an nCache exceeds the 2GB cache size limit, it is automatically split and the resulting cache segments are blended.

    If you selected a single object, the following files are created:

    File Distribution # of nCache files created # of XML description files created # of nCache nodes created
    One File 1 1 1
    One File Per Frame Multiple, 1 for each frame 1 1

    If you selected multiple nCloth objects, the following files are created:

    File Distribution # of nCache files created # of XML description files created # of nCache nodes created
    One File 1 1 Multiple, one for each object
    One File Per Frame Multiple, one for each frame 1 Multiple, one for each object
    One File and One File per Geometry Multiple, one for each object Multiple, one for each object Multiple, one for each object
    One File Per Frame and One File per Geometry Multiple, one for each frame, for each object Multiple, one for each object Multiple, one for each object
    TipWhen caching a number of Nucleus objects that are part of a single Maya Nucleus system, disable the system’s Maya Nucleus solver to avoid playback slow downs.

To import an nCache

  1. Select the object for which you want to import an existing nCache from disk.
  2. Depending on the type of object for which you are importing an nCache, do one of the following:

    The Import file browser window appears. See either nCache > Attach Existing Cache File or Fluid nCache > Attach Existing Cache File.

  3. Navigate to the nCache file(s) you want to use for your object and do one of the following:
  4. Click Import.

    A new cacheFile node is created for the imported nCache and it is automatically attached to the selected object’s cacheBlend node. This allows you to combine the imported cache with any of the selected object’s existing nCaches.