WME True Segment Length

Displays geodesic segment length in feet & meters

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         WME True Segment Length
// @namespace    https://greasyfork.org/users/30701-justins83-waze
// @version      2026.04.20.02
// @description  Displays geodesic segment length in feet & meters
// @author       JustinS83
// @include      https://www.waze.com/editor*
// @include      https://www.waze.com/*/editor*
// @include      https://beta.waze.com/*
// @exclude      https://www.waze.com/user/editor*
// @grant        none
// @require      https://cdn.jsdelivr.net/npm/@turf/turf@7/turf.min.js
// @license      GPLv3
// ==/UserScript==

/* global W */
/* global OL */
/* ecmaVersion 2017 */
/* global $ */
/* global _ */
/* eslint curly: ["warn", "multi-or-nest"] */

(function() {

    let sdk;
    const ObjectTypes = Object.freeze({
        SEGMENT: 'segment',
        PLACE: 'venue'});

    async function bootstrap() {
        await window.SDK_INITIALIZED;
        sdk = getWmeSdk({ scriptId: 'wme-tsl', scriptName: 'WME True Segment Length' });
        await sdk.Events.once({ eventName: 'wme-ready' });

        init();
    }

    bootstrap();

    function init(){
        sdk.Events.on({ eventName: 'wme-selection-changed', eventHandler: waitAndUpdate });
        sdk.Events.on({ eventName: 'wme-after-edit', eventHandler: waitAndUpdate });
        sdk.Events.on({ eventName: 'wme-after-undo', eventHandler: waitAndUpdate });
        sdk.Events.on({ eventName: 'wme-after-redo-clear', eventHandler: waitAndUpdate });
        sdk.Events.on({ eventName: 'wme-no-edits', eventHandler: waitAndUpdate });
        console.log("WME True Segment Length" + GM_info.script.version);
    }

    async function waitAndUpdate(){
        await new Promise(r => setTimeout(r, 150));
        updateDisplay();
    }

    function updateDisplay(){
        let selection = sdk.Editing.getSelection();
        if(selection && selection?.ids.length > 0 && selection.objectType == ObjectTypes.SEGMENT){
            var count = selection.ids.length;
            var bold = false;

            const metersLength = selection.ids.reduce((total, id) => {
                const seg = sdk.DataModel.Segments.getById({segmentId: id});
                if(!seg) return total;
                return total + turf.length(seg.geometry, {units:'meters'});
            }, 0);

            if(metersLength >0){
                var isUSA = sdk.Settings.getRegionCode() === 'usa';
                var ftLength = Math.round(metersLength * 3.28084 *100)/100;
                var milesLength = Math.round(ftLength/5280 *1000)/1000;

                if(selection.ids[0] < 0){ //segment has not yet been saved
                    var list = $('#segment-edit-general > div > ul')[0];
                    var newItem = document.createElement("LI");
                    var textnode = document.createTextNode("Length: " + metersLength +" m");
                    newItem.appendChild(textnode);
                    list.insertBefore(newItem, list.childNodes[0]);

                    if(isUSA){
                        newItem = document.createElement("LI");
                        textnode = document.createTextNode(`Length: ${ftLength} ft (${milesLength} miles)`);
                        newItem.appendChild(textnode);
                        list.insertBefore(newItem, list.childNodes[0]);
                    }
                }
                else{
                    try
                    {
                        $('#segment-edit-general > div > ul > li:nth-child(1) > span')[1].innerHTML = (Math.round(metersLength*100)/100) + " m";
                        if($('#segment-edit-general > div > ul > li:nth-child(1) > span').length === 2 && isUSA)
                            $('#segment-edit-general > div > ul > li:nth-child(1)').append(`<br/><span class="name">Length: </span><span class="value">${ftLength} ft</span><span class="value"> (${milesLength} miles)</span>`);
                        if(bold){
                            $('#segment-edit-general > div > ul > li:nth-child(1) > span').css('font-weight', "bold");
                            if(isUSA)
                                $('#segment-edit-general > div > ul > li:nth-child(2) > span').css('font-weight', "bold");
                        }
                    }
                    catch(ex)
                    {

                    }
                }
            }
        }
    }

})();