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from k3d import K3D
from ipywidgets import interact, FloatSlider

view_matrix = (
    0.9,  0.1, -0.4, 0.0,
    0.0,  0.9,  0.4, 0.0,
    0.4, -0.4,  0.9, 0.0,
    0.0,  0.0,  0.0, 1.0
)

positions = (
    -10.0, -15.0, 0.0,
    -10.0,   5.0, 0.0,
     10.0,   5.0, 0.0,
    -10.0, -15.0, 0.0,
     10.0, -15.0, 0.0,
    -10.0,   5.0, 0.0,
      0.0,  15.0, 0.0,
     10.0,   5.0, 0.0,
     10.0, -15.0, 0.0
)

line = K3D.line((0, 0, 0, 5, 10, 15))
lines = K3D.line(positions, view_matrix=view_matrix, color=0xff0000, width=2.5) + line

plot = K3D(antialias=True, camera_auto_fit=True)
plot += lines
plot.display()

# plot.camera_auto_fit = False  # uncomment in order to keep camera at fixed distance on changes
@interact(width=FloatSlider(value=line.line_width, min=0.1, max=4.0, step=0.1))
def update(width):
    line.line_width = width


    

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line.color = 0xFFFF00


    

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plot - line


    

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plot - lines