Bug#986381: polymake: VISUAL with threejs fails

[Benjamin Lorenz]

Dear Joachim,

thanks for the report,

F12 displays a warning

"THREE.OrbitControls: As part of the transition to ES6 Modules, the files in
'examples/js' were deprecated in May 2020 (r117) and will be deleted in
December 2020 (r124)...

> "ReferenceError: Can't find variable: THREE"



As a quick check could you please try to fetch the polymake sources and run:

cd polymake-4.3/external/js
uglifyjs three.js OrbitControls.js Projector.js SVGRenderer.js \
   TrackballControls.js WebGL.js -c -m -o /tmp/three.polymake.js


/usr/share/polymake/resources/threejs/js/three.polymake.js




Best,
Benjamin

these warnings can be ignored as we ship pre-r124 versions of those files. Transition to ES6 modules is planned but not done yet. The reason for this error and the broken visualization is probably because the correct order in the minified js file got lost during the latest update. Use that /tmp/three.polymake.js file to replace the one from the polymake-common package at: If that does help this can be fixed by a small change in debian/rules, moving three.js to the front of the JS variable: -JS:= OrbitControls.js Projector.js SVGRenderer.js three.js TrackballControls.js WebGL.js +JS:= three.js OrbitControls.js Projector.js SVGRenderer.js TrackballControls.js WebGL.js

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