CircularArc

CircularArc#

CircularArc( *, pointa: VectorLikeFloat, pointb: VectorLikeFloat, center: VectorLikeFloat, resolution: int = 100, negative: bool = False, ) → PolyData[source]#

Create a circular arc defined by two endpoints and a center.

The number of segments composing the polyline is controlled by setting the object resolution.

Parameters:

pointaVectorLikeFloat

Position of the first end point.

pointbVectorLikeFloat

Position of the other end point.

centerVectorLikeFloat

Center of the circle that defines the arc.

resolutionint, default: 100

The number of segments of the polyline that draws the arc. Resolution of 1 will just create a line.

negativebool, default: False

By default the arc spans the shortest angular sector between pointa and pointb.

By setting this to True, the longest angular sector is used instead (that is, the negative coterminal angle to the shortest one).

Returns:

pyvista.PolyData: Circular arc mesh.

Examples#

Download Python source code | Download Jupyter notebook

Create a quarter arc centered at the origin in the xy plane.

>>> import pyvista as pv
>>> arc = pv.CircularArc(pointa=[-1, 0, 0], pointb=[0, 1, 0], center=[0, 0, 0])
>>> pl = pv.Plotter()
>>> _ = pl.add_mesh(arc, color='k', line_width=10)
>>> _ = pl.show_bounds(location='all', font_size=30, use_2d=True)
>>> _ = pl.view_xy()
>>> pl.show()