def alembic_attribute_exists(self, alembic_path, object_path, attribute_name):
"""
For object at object_path in alembic from alembic_path check if attribute exists.
"""
#path exists
if not (os.path.isfile(alembic_path)):
#log
self.logger.debug('Alembic file at path does not exist. Returning None')
return False
#alembic_query_result
alembic_query_result = abc.alembicArbGeometry(alembic_path, object_path, attribute_name, 0)
#object exists
if not (alembic_query_result):
#log
self.logger.debug('Object path inside Alembic file does not exist. Returning False')
return False
#scope
scope = alembic_query_result[2]
#attr unknown
if (scope == 'unknown'):
#log
self.logger.debug('Attribute for Object path inside Alembic file does not exist. Returning False')
return False
#return
return True
def alembic_attribute_exists(self, alembic_path, object_path, attribute_name):
"""
For object at object_path in alembic from alembic_path check if attribute exists.
"""
#path exists
if not (os.path.isfile(alembic_path)):
#log
self.logger.debug('Alembic file at path does not exist. Returning None')
return False
#alembic_query_result
alembic_query_result = abc.alembicArbGeometry(alembic_path, object_path, attribute_name, 0)
#object exists
if not (alembic_query_result):
#log
self.logger.debug('Object path inside Alembic file does not exist. Returning False')
return False
#scope
scope = alembic_query_result[2]
#attr unknown
if (scope == 'unknown'):
#log
self.logger.debug('Attribute for Object path inside Alembic file does not exist. Returning False')
return False
#return
return True
def set_attr(prim, attr, from_path):
"""Try reading attribute from path in Alembic file and set to primitive
Return `True` if operation sucess or `False`
"""
result = abc.alembicArbGeometry(abc_file, from_path, attr, on_time)
if result is not None:
value, is_constane, scope = result
if value:
prim.setAttribValue(attr, value[0])
return True
return False
def get_alembic_attribute_value(self, alembic_path, object_path, attribute_name):
"""
For object at object_path in alembic from alembic_path get attribute value.
"""
#check
if not (self.alembic_attribute_exists(alembic_path, object_path, attribute_name)):
#log
self.logger.debug('Attribute {0} on alembic {1} at path {2} can not be retrieved. Returning None'.format(attribute_name,
alembic_path,
object_path))
return None
#alembic_query_result
alembic_query_result = abc.alembicArbGeometry(alembic_path, object_path, attribute_name, 0)
#return
return alembic_query_result[0]
def get_alembic_attribute_value(self, alembic_path, object_path, attribute_name):
"""
For object at object_path in alembic from alembic_path get attribute value.
"""
#check
if not (self.alembic_attribute_exists(alembic_path, object_path, attribute_name)):
#log
self.logger.debug('Attribute {0} on alembic {1} at path {2} can not be retrieved. Returning None'.format(attribute_name,
alembic_path,
object_path))
return None
#alembic_query_result
alembic_query_result = abc.alembicArbGeometry(alembic_path, object_path, attribute_name, 0)
#return
return alembic_query_result[0]
def getAbcAttr(attrName):
"""
Gets an alembic attribute from the cache
Requires an 'abcFileName' detail attribute
@attrName: name of attribute to retrieve
@useTransform: looks on the parent node instead. Equivalent to using maya's transform instead of shape
"""
geo = hou.pwd().geometry()
time = hou.frame() / hou.fps()
if geo.findGlobalAttrib("abcFileName") is not None:
url = geo.attribValue("abcFileName")
for childGeo in abc.alembicGetSceneHierarchy(url, "/")[2]:
path = "/" + childGeo[0] + "/" + childGeo[2][0][0]
x = abc.alembicArbGeometry(url, path, attrName, time)
if (x[1] == True):
alert(x)
def getAbcAttr(attrName, useTransform=False):
"""
Gets an alembic attribute from the cache
Requires an 'abcFileName' detail attribute
@attrName: name of attribute to retrieve
@useTransform: looks on the parent node instead. Equivalent to using maya's transform instead of shape
"""
geo = hou.pwd().curPrim().geometry()
if geo.findGlobalAttrib("abcFileName") is not None:
abcPath = geo.attribValue("abcFileName")
path = hou.pwd().curPrim().attribValue("path")
if useTransform:
path = path.rsplit("/", 1)[0]
x = abc.alembicArbGeometry(abcPath, path, attrName, hou.frame() / hou.fps())
if x[0]:
return x[0][0]
else:
return ''