"""
Example usage of addTrail().
Add a trailing line to a moving object.
"""
print(__doc__)
from vtkplotter import Plotter, sin, Sphere, Point
vp = Plotter(axes=6, bg='white', interactive=0)
s = Sphere(c="green", res=24)
s.cutWithPlane([-0.9, 0, 0], showcut=True) # cut left part of sphere
p = Point([1, 1, 1], r=12, c="k")
# add a trail to point p with maximum length 0.5 and 50 segments
p.addTrail(c="k", lw=3, maxlength=0.5, n=50)
vp += [s, p]
for i in range(200):
p.pos([-2 + i / 100.0, sin(i / 5.0) / 15, 0])
vp.show()
vp.camera.Azimuth(-0.2)
vp.show(interactive=1)
'''
Example usage of addTrail(). Add a triling line to a moving object.
'''
print(__doc__)
from vtkplotter import Plotter, sin, Sphere, Point
vp = Plotter(axes=6, interactive=0)
s = Sphere(c='green', res=24)
s.cutWithPlane([-0.9, 0, 0], showcut=True) #cut left part of sphere
p = Point([1, 1, 1], r=12, c='k')
# add a trail to point p with maximum length 0.5 and 50 segments
p.addTrail(c='k', lw=3, maxlength=0.5, n=50)
vp.add([s, p])
for i in range(200):
p.pos([-2 + i / 100., sin(i / 5.) / 15, 0])
vp.show()
vp.camera.Azimuth(-0.2)
vp.show(interactive=1)