sfepy.discrete.common.mappings module¶
Reference-physical domain mappings.
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class
sfepy.discrete.common.mappings.
Mapping
(**kwargs)[source]¶ Base class for mappings.
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static
from_args
(region, kind='v')[source]¶ Create mapping from reference to physical entities in a given region, given the integration kind (‘v’ or ‘s’).
This mapping can be used to compute the physical quadrature points.
Parameters: region : Region instance
The region defining the entities.
kind : ‘v’ or ‘s’
The kind of the entities: ‘v’ - cells, ‘s’ - facets.
Returns: mapping : VolumeMapping or SurfaceMapping instance
The requested mapping.
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static
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class
sfepy.discrete.common.mappings.
PhysicalQPs
(num=0)[source]¶ Physical quadrature points in a region.
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sfepy.discrete.common.mappings.
get_jacobian
(field, integral, region=None, integration='volume')[source]¶ Get the jacobian of reference mapping corresponding to field.
Parameters: field : Field instance
The field defining the reference mapping.
integral : Integral instance
The integral defining quadrature points.
region : Region instance, optional
If given, use the given region instead of field region.
integration : one of (‘volume’, ‘surface’, ‘surface_extra’)
The integration type.
Returns: jac : array
The jacobian merged for all element groups.
See also
Notes
Assumes the same element geometry in all element groups of the field!
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sfepy.discrete.common.mappings.
get_mapping_data
(name, field, integral, region=None, integration='volume')[source]¶ General helper function for accessing reference mapping data.
Get data attribute name from reference mapping corresponding to field in region in quadrature points of the given integral and integration type.
Parameters: name : str
The reference mapping attribute name.
field : Field instance
The field defining the reference mapping.
integral : Integral instance
The integral defining quadrature points.
region : Region instance, optional
If given, use the given region instead of field region.
integration : one of (‘volume’, ‘surface’, ‘surface_extra’)
The integration type.
Returns: data : array
The required data merged for all element groups.
Notes
Assumes the same element geometry in all element groups of the field!
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sfepy.discrete.common.mappings.
get_normals
(field, integral, region)[source]¶ Get the normals of element faces in region.
Parameters: field : Field instance
The field defining the reference mapping.
integral : Integral instance
The integral defining quadrature points.
region : Region instance
The given of the element faces.
Returns: normals : array
The normals merged for all element groups.
See also
Notes
Assumes the same element geometry in all element groups of the field!