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"""
Surface normals wireframe
=========================
Display a 3D mesh with normals and wireframe
.. tags:: experimental
"""
from vispy.io import load_data_file, read_mesh
import napari
vert, faces, _, _ = read_mesh(load_data_file('orig/triceratops.obj.gz'))
# put the mesh right side up, scale it up (napari#3477) and fix faces handedness
vert *= -100
faces = faces[:, ::-1]
viewer = napari.Viewer(ndisplay=3)
surface = viewer.add_surface(data=(vert, faces))
# enable normals and wireframe
surface.normals.face.visible = True
surface.normals.vertex.visible = True
surface.wireframe.visible = True
if __name__ == '__main__':
napari.run()
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