Project to a Plane

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pyvista.PolyData surfaces and pointsets can easily be projected to a plane defined by a normal and origin using project_points_to_plane().

import pyvista as pv
from pyvista import examples

poly = examples.load_random_hills()
poly.plot()

Static Scene

Interactive Scene

Project that surface to a plane underneath the surface

origin = list(poly.center)
origin[-1] -= poly.length / 3.0
projected = poly.project_points_to_plane(origin=origin)

# Display the results
pl = pv.Plotter()
pl.add_mesh(poly)
pl.add_mesh(projected)
pl.show()

Static Scene

Interactive Scene

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