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I am overlaying 3D scatter markers on top of a semi-transparent 3D surface. I had disabled the `hoverinfo` on the 3D surface so that my mouse cursor always snap to the nearest 3D marker. Everything works fine as long as the marker is above the surface. However, when a marker is underneath the 3D surface, I have to rotate the view to the other side of the surface so that I can select that 3D marker.

Is there any way to make the 3D markers that are underneath a 3D surface always selectable without having to rotate the view? Does Plotly has something like z-order?

If those 3D markers are inside a spherical 3D surface (or any closed 3D surface), is there any way to select/click on those markers? Thanks

Here is the concrete example. I am trying to hover/click the (x,y,z) coordinate of the yellow marker inside the closed 3D surface.

``````import numpy as np
import plotly.graph_objects as go

a, b, d = 1.32, 1., 0.8
c = a**2 - b**2
u, v = np.mgrid[0:2*np.pi:100j, 0:2*np.pi:100j]
x = (d * (c - a * np.cos(u) * np.cos(v)) + b**2 * np.cos(u)) / (a - c * np.cos(u) * np.cos(v))
y = b * np.sin(u) * (a - d*np.cos(v)) / (a - c * np.cos(u) * np.cos(v))
z = b * np.sin(v) * (c*np.cos(u) - d) / (a - c * np.cos(u) * np.cos(v))

fig = go.Figure(
go.Surface(x=x, y=y, z=z, opacity=0.5, showscale=False))