Drawing a sphere

This is partly an issue and partly a question. (I didn’t see anywhere else to ask questions.)

I would like to draw a set of points on the surface of a sphere. I tried this code, using a k3d.points with a large point size to draw the sphere:

import numpy as np
import k3d

points = np.random.standard_normal((1000,3))
points = points / np.linalg.norm(points,axis=1)[:,None]

plot = k3d.plot()

plot += k3d.points([0, 0, 0],point_size = 2,color=0xeeeeee)
plot += k3d.points(points, point_size=0.01,color=0x000000)

plot.display()

However, this doesn’t seem to work very well. If I zoom out the black points get absorbed inside the white sphere, while if I zoom in they seem to be above its surface.

This might be a bug, so I’m reporting it here, but it also might be that k3d.points isn’t supposed to be used this way.

If setting point_size this big isn’t supported, is there a canonical way to draw a sphere in k3d? Triangulating my own mesh seems like overkill, given that some perfectly nice sphere generating code exists already in k3d_points, so I’m wondering if there’s another way to do it.

[artur-trzesiok]

Please download new version of k3d@2.14.0:

https://pypi.org/project/k3d/

[artur-trzesiok]

So preparation of new k3d is here https://github.com/K3D-tools/K3D-jupyter/pull/351