Сентябрь 2023 - Страница 3 из 3

Map api yandex: иконка кластера в виде круговой диаграммы

06.09.2023 Павел Грибов WEB

Задача: отобразить на карте иконки кластеров в виде диаграммы построенной на основании сумм неких значений

Решение:

Используя библиотеку PieChartGD.php создадим файл вывода картинки (PHP):

<?php
include_once '../../SamChristy/PieChart/PieChartGD.php';

use SamChristy\PieChart\PieChartGD;

$chart = new PieChartGD(300, 300);

$chart->setLegend(false);

$sausages_6=$_GET["sausages_6"];
$sausages_6_12=$_GET["sausages_6_12"];
$sausages_more_12=$_GET["sausages_more_12"];

$max=$sausages_6+$sausages_12+$sausages_more_12;
$pers_6=round($sausages_6*100/$max);
$pers_6_12=round($sausages_6_12*100/$max);
$pers_more_12=round($sausages_more_12*100/$max);

$chart->addSlice('sausages_6', $pers_6, '#0a9b0e');
$chart->addSlice('sausages_6_12',    $pers_6_12, '#f3a61f');
$chart->addSlice('sausages_more_12',$pers_more_12, '#f31f1f');

$chart->draw();
$chart->outputPNG();

<?php

include_once '../../SamChristy/PieChart/PieChartGD.php';

use SamChristy\PieChart\PieChartGD;

$chart = new PieChartGD(300, 300);

$chart->setLegend(false);

$sausages_6=$_GET["sausages_6"];

$sausages_6_12=$_GET["sausages_6_12"];

$sausages_more_12=$_GET["sausages_more_12"];

$max=$sausages_6+$sausages_12+$sausages_more_12;

$pers_6=round($sausages_6*100/$max);

$pers_6_12=round($sausages_6_12*100/$max);

$pers_more_12=round($sausages_more_12*100/$max);

$chart->addSlice('sausages_6', $pers_6, '#0a9b0e');

$chart->addSlice('sausages_6_12', $pers_6_12, '#f3a61f');

$chart->addSlice('sausages_more_12',$pers_more_12, '#f31f1f');

$chart->draw();

$chart->outputPNG();

Далее создадим функцию отображения кластера (JavaScript):

function SetClusterProp(ob){
    console.log("-настраиваю иконки кластера");

   ob.clusters.options.set({
        gridSize: 800,
        groupByCoordinates: true,
        clusterDisableClickZoom: true,
        clusterIcons: [{
            href: 'images/m1.png',
            size: [50, 50],            
            offset: [-25, -25]
        }]
    });
    ob.clusters.events.add('click', function (e) {
          console.log("Кликнули по кластеру");
          click_cluster = e.get('target');//.state.get('activeObject')
    });
    ob.clusters.events.add('add', function (e) { 
       var cluster = ob.clusters.getById(e.get('objectId')),
        objects = cluster.properties.geoObjects;
        if (objects.length >= 20 && objects.length < 100) {       
            dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;
            for (var i = 0; i < objects.length; i++) {
              dz=dz+objects[i].properties.dz;
              sausages=sausages+objects[i].properties.sausages;
              sausages_6=sausages_6+objects[i].properties.sausages_6;
              sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;
              sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;
            };            
            ob.clusters.setClusterOptions(cluster.id, {
                clusterIcons: [{
                    href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,
                    size: [45, 45],            
                    offset: [-22.5, -22.5]
                }]
            });
        }
        if (objects.length >= 100 && objects.length < 1000) {       
            dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;
            for (var i = 0; i < objects.length; i++) {
              dz=dz+objects[i].properties.dz;
              sausages=sausages+objects[i].properties.sausages;
              sausages_6=sausages_6+objects[i].properties.sausages_6;
              sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;
              sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;
            };
            ob.clusters.setClusterOptions(cluster.id, {
                clusterIcons: [{
                    href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,
                    size: [55, 55],            
                    offset: [-22.5, -22.5]
                }]
            });
        }
        if (objects.length >= 1000) {       
            dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;
            for (var i = 0; i < objects.length; i++) {
              dz=dz+objects[i].properties.dz;
              sausages=sausages+objects[i].properties.sausages;
              sausages_6=sausages_6+objects[i].properties.sausages_6;
              sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;
              sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;
            };                   
            ob.clusters.setClusterOptions(cluster.id, {
                clusterIcons: [{
                    href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,
                    size: [65, 65],            
                    offset: [-22.5, -22.5]
                }]
            });
        }

    });        
  return ob;
}

function SetClusterProp(ob){

console.log("-настраиваю иконки кластера");

ob.clusters.options.set({

gridSize: 800,

groupByCoordinates: true,

clusterDisableClickZoom: true,

clusterIcons: [{

href: 'images/m1.png',

size: [50, 50],

offset: [-25, -25]

}]

});

ob.clusters.events.add('click', function (e) {

console.log("Кликнули по кластеру");

click_cluster = e.get('target');//.state.get('activeObject')

});

ob.clusters.events.add('add', function (e) {

var cluster = ob.clusters.getById(e.get('objectId')),

objects = cluster.properties.geoObjects;

if (objects.length >= 20 && objects.length < 100) {

dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;

for (var i = 0; i < objects.length; i++) {

dz=dz+objects[i].properties.dz;

sausages=sausages+objects[i].properties.sausages;

sausages_6=sausages_6+objects[i].properties.sausages_6;

sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;

sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;

};

ob.clusters.setClusterOptions(cluster.id, {

clusterIcons: [{

href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,

size: [45, 45],

offset: [-22.5, -22.5]

}]

});

}

if (objects.length >= 100 && objects.length < 1000) {

dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;

for (var i = 0; i < objects.length; i++) {

dz=dz+objects[i].properties.dz;

sausages=sausages+objects[i].properties.sausages;

sausages_6=sausages_6+objects[i].properties.sausages_6;

sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;

sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;

};

ob.clusters.setClusterOptions(cluster.id, {

clusterIcons: [{

href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,

size: [55, 55],

offset: [-22.5, -22.5]

}]

});

}

if (objects.length >= 1000) {

dz=0;sausages=0;sausages_6=0;sausages_6_12=0;sausages_more_12=0;

for (var i = 0; i < objects.length; i++) {

dz=dz+objects[i].properties.dz;

sausages=sausages+objects[i].properties.sausages;

sausages_6=sausages_6+objects[i].properties.sausages_6;

sausages_6_12=sausages_6_12+objects[i].properties.sausages_6_12;

sausages_more_12=sausages_more_12+objects[i].properties.sausages_more_12;

};

ob.clusters.setClusterOptions(cluster.id, {

clusterIcons: [{

href: 'images/pie.php?sausages='+sausages+"&sausages_6="+sausages_6+"&sausages_6_12="+sausages_6_12+"&sausages_more_12="+sausages_more_12,

size: [65, 65],

offset: [-22.5, -22.5]

}]

});

}

});

return ob;

}

И перед началом отрисовки меток, настроим кластеризацию:

 // настройки кластеризакции
    objectManager = new ymaps.ObjectManager({
        gridSize: 120,
        clusterDisableClickZoom: true,
        geoObjectOpenBalloonOnClick: true,
        minClusterSize: 2,
        showInAlphabeticalOrder: false,
        viewportMargin: 128,
        zoomMargin: 0,         
        clusterize: true
    }); //кластеризуем
          
    objectManager=SetClusterProp(objectManager);        
    myMap.geoObjects.add(objectManager);        
...
objectManager.add(массив_объектов);

// настройки кластеризакции

objectManager = new ymaps.ObjectManager({

gridSize: 120,

clusterDisableClickZoom: true,

geoObjectOpenBalloonOnClick: true,

minClusterSize: 2,

showInAlphabeticalOrder: false,

viewportMargin: 128,

zoomMargin: 0,

clusterize: true

}); //кластеризуем

objectManager=SetClusterProp(objectManager);

myMap.geoObjects.add(objectManager);

...

objectManager.add(массив_объектов);

В результате получим что-то вроде:

Оставить комментарий map api yandex, диаграмма, иконка кластера, карты

3D модель корпуса для дисплея LCD16023D

05.09.2023 Павел Грибов arduino

Скачать

Озадачился давече печатью корпуса для дисплея LCD16023D. Сам рисовать не стал, нашел в интернете.

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JavaScript: перехват всех http/https запросов страницы

04.09.2023 Павел Грибов WEB

Прилетела задача перехватить URL всех загрузок тайлов на странице с размещенной Яндекс картой. В принципе если бы был простой случай, то всё решилось бы созданием прототипа для функции XMLHttpRequest , что-то в духе:

var open = XMLHttpRequest.prototype.open;

XMLHttpRequest.prototype.open = function(method, uri, async, user, pass) {
    this.addEventListener("readystatechange", function(event) {  
    if(this.readyState == 4){
       var self = this;
       var response = {
         method: method,
         uri: uri,
         responseText: self.responseText
      };
      console.log(response);  
    } else {
        console.log(this.readyState);
    }
    }, false);
  open.call(this, method, uri, async, user, pass);
};

var open = XMLHttpRequest.prototype.open;

XMLHttpRequest.prototype.open = function(method, uri, async, user, pass) {

this.addEventListener("readystatechange", function(event) {

if(this.readyState == 4){

var self = this;

var response = {

method: method,

uri: uri,

responseText: self.responseText

};

console.log(response);

} else {

console.log(this.readyState);

}

}, false);

open.call(this, method, uri, async, user, pass);

};

Но возник один нюанс, карта располагается в iframe, а прототипы «вниз» не распространяются. Единственным способом осталось написать сервис Service Worker, который будет отлавливать все запросы..

На странице добавляем функцию загрузки сервиса:

<script>
console.log("пробуем зарегистрировать Service Worker");    
if ('serviceWorker' in navigator) {
  window.addEventListener('load', function() {
    navigator.serviceWorker.register('/sw.js',{}).then(function(registration) {
      console.log('ServiceWorker registration successful with scope: ', registration.scope);
    }, function(err) {
      console.log('ServiceWorker registration failed: ', err);
    });
  });
}
</script>

console.log("пробуем зарегистрировать Service Worker");

if ('serviceWorker' in navigator) {

window.addEventListener('load', function() {

navigator.serviceWorker.register('/sw.js',{}).then(function(registration) {

console.log('ServiceWorker registration successful with scope: ', registration.scope);

}, function(err) {

console.log('ServiceWorker registration failed: ', err);

});

}

</script>

Далее в sw.js добавим слушательсобытия fetch, и реализацию отправки перехваченых url на сервер:

self.addEventListener('install', (event) => {
    console.log('Установлен');
});

self.addEventListener('activate', (event) => {
    console.log('Активирован');
    self.clients.claim();
});

self.addEventListener('fetch', (event) => {    
    console.log('Запрашиваем URL: '+event.request.url);    
    postData("woodpecker.php", { "url": event.request.url}).then((data) => {
        console.log(data); 
    });
            
});


async function postData(url = "", data = {}) {
   console.log("-отправляем в "+url);
  // Default options are marked with *
  const response = await fetch(url, {
    method: "POST", 
    headers: {
      'Accept': 'application/json',
      'Content-Type': 'application/x-www-form-urlencoded', 
    },
    body: "data="+JSON.stringify(data), // body data type must match "Content-Type" header    
  });
  return await response.json(); // parses JSON response into native JavaScript objects
}

self.addEventListener('install', (event) => {

console.log('Установлен');

});

self.addEventListener('activate', (event) => {

console.log('Активирован');

self.clients.claim();

});

self.addEventListener('fetch', (event) => {

console.log('Запрашиваем URL: '+event.request.url);

postData("woodpecker.php", { "url": event.request.url}).then((data) => {

console.log(data);

});

async function postData(url = "", data = {}) {

console.log("-отправляем в "+url);

// Default options are marked with *

const response = await fetch(url, {

method: "POST",

headers: {

'Accept': 'application/json',

'Content-Type': 'application/x-www-form-urlencoded',

body: "data="+JSON.stringify(data), // body data type must match "Content-Type" header

});

return await response.json(); // parses JSON response into native JavaScript objects

}

Серверная часть woodpecker.php:

<?php
$body= json_decode($_POST["data"]);

if ($body->url!=""){
    file_put_contents("urls.txt",$body->url."\n",FILE_APPEND);
}

$answer=new stdClass();
$answer->error=false;
$answer->result="ok";

echo json_encode($answer);
die();

<?php

$body= json_decode($_POST["data"]);

if ($body->url!=""){

file_put_contents("urls.txt",$body->url."\n",FILE_APPEND);

}

$answer=new stdClass();

$answer->error=false;

$answer->result="ok";

echo json_encode($answer);

die();

В результате в файл url.txt на сервере пишутся все запрошенные url.

Отладка сервиса в FireFox возможна на вкладке about:debugging#/runtime/this-firefox, ищем там свой сервис, нажимаем «исследовать»

Оставить комментарий javascript, ServiceWorker, браузер

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