WidgetHelper.add_mesh_slice_spline

WidgetHelper.add_mesh_slice_spline#

WidgetHelper.add_mesh_slice_spline(
mesh,
generate_triangles: bool = False,
factor=1.25,
n_handles=5,
resolution=25,
widget_color=None,
show_ribbon: bool = False,
ribbon_color='pink',
ribbon_opacity=0.5,
initial_points=None,
closed: bool = False,
interaction_event: pyvista.InteractionEventType = 'end',
**kwargs,
)[source]#

Slice a mesh with a spline widget.

Add a mesh to the scene with a spline widget that is used to slice the mesh interactively.

The sliced mesh is saved to the .spline_sliced_meshes attribute on the plotter.

Parameters:
meshDataSet or vtkAlgorithm

The input dataset to add to the scene and slice along the spline or algorithm that produces said mesh.

generate_trianglesbool, optional

If this is enabled (False by default), the output will be triangles otherwise, the output will be the intersection polygons.

factorfloat, optional

An inflation factor to expand on the bounds when placing.

n_handlesint, optional

The number of interactive spheres to control the spline’s parametric function.

resolutionint, optional

The number of points to generate on the spline.

widget_colorColorLike, optional

Color of the widget. Either a string, RGB sequence, or hex color string. For example:

  • color='white'

  • color='w'

  • color=[1.0, 1.0, 1.0]

  • color='#FFFFFF'

show_ribbonbool, optional

If True, the poly plane used for slicing will also be shown.

ribbon_colorColorLike, optional

Color of the ribbon. Either a string, RGB sequence, or hex color string.

ribbon_opacityfloat, optional

Opacity of ribbon. Defaults to 1.0 and must be between [0, 1].

initial_pointssequence, optional

The points to initialize the widget placement. Must have same number of elements as n_handles. If the first and last point are the same, this will be a closed loop spline.

closedbool, optional

Make the spline a closed loop.

interaction_eventInteractionEventType, optional

The VTK interaction event to use for triggering the callback. Accepts either the strings 'start', 'end', 'always' or a vtkCommand.EventIds.

**kwargsdict, optional

All additional keyword arguments are passed to pyvista.Plotter.add_mesh() to control how the mesh is displayed.

Returns:
vtkActor

VTK actor of the mesh.

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