Problem with plot3d and threejs

[Richard Quint]

I've just built sage-10.8 on from source on an Intel 13th Gen IntelCoreT i7-1360P running Ubuntu 24.04 and have a question about the threejs viewer for html files. According to the log file threejs-r122.p0.log (attached), threejs-r122.p0 appears to be properly installed but when I try to display a 3d plot the browser opens a blank window.  If I add the option "online=True" the plot displays properly.  In the past (up to 10.7) no option or using "online=False" worked.  How can I get the local version of threejs to work again?

[G. M.-S.]

Hi Richard.

Perhaps this is relevant?

https://discourse.threejs.org/t/cant-find-threejs-and-threejs-min-js-file/65270

HTH,

Guillermo

[Dima Pasechnik]

The first thing to check is that the browser is able to load any local htmt/js files at all. It might be that it's not possible due to some kind of sandboxing, preventing the browser from seeing most of the local file system.

[Richard Quint]

the problem is with the script creating the html files.  In 10.7 when
setting online=False or no option the lines

<script src="SAGE_ROOT/local/share/threejs-sage/r122/three.min.js"></script>
<script>

are written into the html file, while if online=True that line is

<script
src="https://cdn.jsdelivr.net/gh/sagemath/threejs-sage@r122/build/three.min.js"></script>


In 10.8 when setting online=False or no option that line is missing
while when online=True
the same line as in 10.7

<script
src="https://cdn.jsdelivr.net/gh/sagemath/threejs-sage@r122/build/three.min.js"></script>

is written into the script.  After manually inserting

<script src="SAGE_ROOT/local/share/threejs-sage/r122/three.min.js"></script>

the file displays correctly.