LoadUpdater

class compas_tna.loads.LoadUpdater

Bases: object

Class for constructing a callable for updating loads when geometry and selfweight change.

Parameters:

meshMesh

A form diagram mesh.

p0ndarray (number_of_vertices x 3)

The additional (fixed) loads at the vertices.

thicknessndarray (number_of_vertices x 1) or float, optional

A thickness value per vertex. Or a single constant thickness value. Default is a constant thickness of 1.0.

densityfloat, optional

The density for selfweight calculations. Default is 1.0.

Examples

>>> import numpy
>>> xyz = numpy.array(form.vertices_attributes("xyz"))
>>> p = numpy.array(form.vertices_attributes(["px", "py", "pz"]))
>>> p0 = p.copy()

Construct a load updater with the (additional) point loads applied at the vertices. Note that these additional loads are often zero.

>>> updateloads = LoadUpdater(form, p0)

After the geometry changes, update the loads by recomputing selfweight.

>>> updateloads(p, xyz)

Methods

face_matrix	Compute the face matrix of the mesh.
tributary_areas	Compute the tributary area per vertex.