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"""
.. _project_plane_example:
Project to a Plane
~~~~~~~~~~~~~~~~~~
:class:`pyvista.PolyData` surfaces and pointsets can easily be projected to a
plane defined by a normal and origin using
:meth:`~pyvista.PolyDataFilters.project_points_to_plane`.
"""
# sphinx_gallery_thumbnail_number = 2
from __future__ import annotations
import pyvista as pv
from pyvista import examples
poly = examples.load_random_hills()
poly.plot()
# %%
# 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
p = pv.Plotter()
p.add_mesh(poly)
p.add_mesh(projected)
p.show()
# %%
# .. tags:: filter
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