Test of https://github.com/IITC-CE/Leaflet.Geodesic/pull/4; install: https://cdn.staticaly.com/gist/johnd0e/588f58172ee45ca07f89e5c3a7503cb2/raw/simplergeodesic.user.js?env=dev

simplergeodesic.user.js

// ==UserScript==
// @id             simplergeodesic
// @name           IITC plugin: Simpler geodesic
// @category       Test
// @version        0.2.0
// @description    test 
// @namespace      https://github.com/IITC-CE/ingress-intel-total-conversion
// @include        https://intel.ingress.com/*
// @grant          none
// ==/UserScript==


if (typeof window.plugin !== 'function') window.plugin = function() {};
(function wrapper (plugin_info) {


function fix (Class) {
  Class.include({
    _projectLatlngs: function (latlngs, result, projectedBounds) {
      latlngs = this._defaultShape();
      var geo_latlngs = this._geodesicConvertLines(latlngs);
      L.Polyline.prototype._projectLatlngs.call(this, geo_latlngs, result, projectedBounds);
    }
  });
  ['_geodesicConvert','initialize','getLatLngs','_setLatLngs','_defaultShape','redraw'].forEach(function (method) {
    delete Class.prototype[method];
  });
}

function setup () {
  fix(L.GeodesicPolyline);
  fix(L.GeodesicPolygon);
  L.GeodesicPolygon.include({
    getLatLngs: function () { return this._latlngs[0]; }, // compatibility workaround for iitc
  });
}
setup.priority = 'high';

setup.info = plugin_info; //add the script info data to the function as a property
if (!window.bootPlugins) window.bootPlugins = [];
window.bootPlugins.push(setup);
if (window.iitcLoaded && typeof setup === 'function') setup();
})({ script: typeof GM_info !== 'undefined' && GM_info.script && {
  version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description
}})// wrapper end