OcTree Mesh

UBC OcTree Mesh Appender

class PVGeo.ubc.octree.OcTreeAppender(**kwargs)

Bases: PVGeo.ubc.two_file_base.ModelAppenderBase

This filter reads a timeseries of models and appends it to an input vtkUnstructuredGrid

_place_on_mesh(output, idx=0)

Internal helper to place a model on the mesh for a given index

_read_up_front()

Internal helper to read all data at start

UBC OcTree Mesh Reader

class PVGeo.ubc.octree.OcTreeReader(nOutputPorts=1, outputType='vtkUnstructuredGrid', **kwargs)

Bases: PVGeo.ubc.two_file_base.ubcMeshReaderBase

This class reads a UBC OcTree Mesh file and builds a vtkUnstructuredGrid of the data in the file. Model File is optional. Reader will still construct vtkUnstructuredGrid safely.

RequestData(request, inInfo, outInfo)

Used by pipeline to generate output

RequestInformation(request, inInfo, outInfo)

Pipeline method for handling requests about the grid extents and time step values

__ubc_octree(filename_mesh, filename_models, output)

Wrapper to Read UBC GIF OcTree mesh and model file pairs. UBC OcTree models are defined using a 2-file format. The “mesh” file describes how the data is descritized. The “model” file lists the physical property values for all cells in a mesh. A model file is meaningless without an associated mesh file. This only handles OcTree formats

Parameters

filename_mesh (str) – The OcTree Mesh filename as an absolute path for the input mesh file in UBC OcTree Mesh Format

filename_models (list(str)): The model filenames as absolute paths for

the input model timesteps in UBC OcTree Model Format. output (vtkUnstructuredGrid): The output data object

Returns

A vtkUnstructuredGrid generated from the UBC 2D/3D Mesh grid. Mesh is defined by the input mesh file. Cell data is defined by the input model file.

Return type

vtkUnstructuredGrid

clear_mesh()

Use to clean/rebuild the mesh.

clear_models()

Use to clean the models and reread the data

description = 'PVGeo: UBC OcTree Mesh'

static place_model_on_octree_mesh(mesh, model, data_name='Data')

Places model data onto a mesh. This is for the UBC Grid data reaers to associate model data with the mesh grid.

Parameters

• mesh (vtkUnstructuredGrid) – The vtkUnstructuredGrid that is the mesh to place the model data upon. Needs to have been read in by ubcOcTree

• model (np.ndarray) – A NumPy float array that holds all of the data to place inside of the mesh’s cells.

• data_name (str) – The name of the model data array once placed on the vtkUnstructuredGrid.

Returns

The input vtkUnstructuredGrid with model data appended.

Return type

vtkUnstructuredGrid

ubc_octree_mesh(FileName, pdo=None)

This method reads a UBC OcTree Mesh file and builds a vtkUnstructuredGrid of the data in the file. This method generates the vtkUnstructuredGrid without any data attributes.

Parameters

• FileName (str) – The mesh filename as an absolute path for the input mesh file in UBC OcTree format.

• pdo (vtkUnstructuredGrid) – A pointer to the output data object.

Returns

a vtkUnstructuredGrid generated from the UBCMesh grid. Mesh is defined by the input mesh file. No data attributes here, simply an empty mesh. Use the place_model_on_octree_mesh() method to associate with model data.

Return type

vtkUnstructuredGrid