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- """The 3D-ruler axes and a goniometer"""
- from vedo import *
- settings.use_parallel_projection = True # avoid parallax effects
- mesh = Cone().rotate_y(90).pos([1, 2, 3])
- mesh.c("steelblue")
- # measure the angle formed by 3 points
- gon = Goniometer(
- [-0.5, 1, 2], [2.5, 2, 2], [-0.5, 3, 3],
- prefix=":alpha_c =~", lw=2, s=0.8
- )
- # show distance of any 2 points
- rul = Ruler3D(
- (-0.5, 2, 1.9),
- (2.5, 2, 2.9),
- prefix="L_x =",
- units="μm",
- axis_rotation=90,
- tick_angle=70,
- )
- # make 3d rulers along the bounding box (similar to set axes=7)
- ax3 = RulerAxes(mesh, units="μm")
- show(mesh, gon, rul, ax3, __doc__, bg2="lb", viewup="z").close()
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