====== Volume interaction ======

Generating [[doc:user:elements:volumes:volumeelement|volume elements]] on a mesh is done with a specific [[doc:user:general:glossaire#Interaction]] called ''FieldApplicator'':

  app = FieldApplicator(no)
  app.push(gObject1)
  app.push(gObject2)
  ...
  app.addProperty(prp)        # association of an ElementProperties
  app.addRuptureCriterion(rc) # failure criterion (optional)
  interactionset.add(app)     # the interaction is added in InteractionSet

or

  app = interactionset.add(FieldApplicator(no)) #add returns a reference
  app.push(gObject1)
  app.push(gObject2)
  ...
  app.addProperty(prp)        # association of an ElementProperties
  app.addRuptureCriterion(rc) # failure criterion (optional)

where

| ''no''       | number of the ''Interaction'' (which is to say the ''FieldApplicator'') | 
|''gObject1''  | mesh geometric entity where the finite elements are applied |
| ''prp''      | [[doc:user:elements:general:def_element_properties|Properties]] of [[doc:user:elements:volumes:volumeelement|volume elements]] to generate.| 
| ''rc''       | optional [[doc:user:elements:volumes:rupture|Failure criterion]]|