count_polygon_portals.user.js

// ==UserScript==
// @name         Count Polygon Portals
// @namespace    https://github.com/jonatkins/ingress-intel-total-conversion
// @version      1.0
// @description  Count portals inside polygons in Ingress
// @author       iamtechknow
// @include      https://www.ingress.com/intel*
// @include      http://www.ingress.com/intel*
// @match        https://www.ingress.com/intel*
// @match        http://www.ingress.com/intel*
// @grant        none
// ==/UserScript==

function wrapper(plugin_info) {
// ensure plugin framework is there, even if iitc is not yet loaded
if(typeof window.plugin !== 'function') window.plugin = function() {};

// PLUGIN START ////////////////////////////////////////////////////////

// use own namespace for plugin
window.plugin.countPolygonPortals = {
    Desc: 'Count portals inside polygons in Ingress'
};

//Helper function to determine if a coordinate is inside a polygon
//From: https://stackoverflow.com/questions/31790344/determine-if-a-point-reside-inside-a-leaflet-polygon
window.plugin.countPolygonPortals.isMarkerInsidePolygon = function (marker, poly) {
    var polyPoints = poly.getLatLngs();       
    var x = marker.getLatLng().lat, y = marker.getLatLng().lng;

    var inside = false;
    for (var i = 0, j = polyPoints.length - 1; i < polyPoints.length; j = i++) {
        var xi = polyPoints[i].lat, yi = polyPoints[i].lng;
        var xj = polyPoints[j].lat, yj = polyPoints[j].lng;

        var intersect = ((yi > y) != (yj > y))
            && (x < (xj - xi) * (y - yi) / (yj - yi) + xi);
        if (intersect) inside = !inside;
    }

    return inside;
};

//Add hook to update polygons when portals loaded
window.plugin.countPolygonPortals.setup  = function() {
    if (window.plugin.drawTools === undefined) {
       alert("'Count Polygon Portals' requires 'draw-tools'");
       return;
    }
    
    // this plugin also needs to create the draw-tools hook, in case it is initialised before draw-tools
    window.pluginCreateHook('pluginDrawTools');
    
    //Define layer group for polygon counts
    window.plugin.countPolygonPortals.countLayer = L.layerGroup();
    
    //Add CSS
    $("<style>")
    .prop("type", "text/css")
    .html(".plugin-polygon-count {\
             font-size: 14px;\
             font-weight: bold;\
             color: gold;\
             opacity: 0.7;\
             text-align: center;\
             text-shadow: -1px -1px #000, 1px -1px #000, -1px 1px #000, 1px 1px #000, 0 0 2px #000; \
             pointer-events: none;\
        }")
    .appendTo("head");
    
    addLayerGroup('Portal Counts', window.plugin.countPolygonPortals.countLayer, true);
    
    //Add hooks to update counts when portals loaded or polygon added
    addHook('mapDataRefreshEnd', function() { window.plugin.countPolygonPortals.update(); });
    addHook('pluginDrawTools', function(e) { //Update for all possible events
        window.plugin.countPolygonPortals.update();
    });
};

window.plugin.countPolygonPortals.update = function() {
    window.plugin.countPolygonPortals.countLayer.clearLayers();
    
    //Get all portals on screen
    var displayBounds = map.getBounds();
    var portals = new Array();
    
    //Iterate thru each portal, add to array
    $.each(window.portals, function(i, portal) {
        // just count portals in viewport
        if(!displayBounds.contains(portal.getLatLng())) 
            return true;
        portals.push(portal);
    });
    
    //For each polygon, create label. If a portal is on a screen, add to count
    window.plugin.drawTools.drawnItems.eachLayer(function(layer) {
        var count = 0;
        if (layer instanceof L.Polygon || layer instanceof L.geodesicPolygon) {
            
            portals.forEach(function(item, index, array) {
                //Does the portal's coordinate reside inside the portal boundary?
                if(window.plugin.countPolygonPortals.isMarkerInsidePolygon(item, layer))
                    count++;
            });
            
            window.plugin.countPolygonPortals.countLayer.addLayer(
                L.marker(layer._latlngs[0], {
                    icon: L.divIcon({
                    className: 'plugin-polygon-count',
                    iconAnchor: [100,5],
                    iconSize: [200,10],
                    html: count,
                    })
                })
            );
        }
    });
};

var setup =  window.plugin.countPolygonPortals.setup;

// PLUGIN END //////////////////////////////////////////////////////////


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 IITC has already booted, immediately run the 'setup' function
if(window.iitcLoaded && typeof setup === 'function') setup();
} // wrapper end
// inject code into site context
var script = document.createElement('script');
var info = {};
if (typeof GM_info !== 'undefined' && GM_info && GM_info.script) info.script = { version: GM_info.script.version, name: GM_info.script.name, description: GM_info.script.description };
script.appendChild(document.createTextNode('('+ wrapper +')('+JSON.stringify(info)+');'));
(document.body || document.head || document.documentElement).appendChild(script);