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kml.js
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kml.js
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const XLSX = window.require('xlsx');
const fs = window.require('fs');
const log = window.require('electron-log');
const BG_UTILS = window.require('./bg-utils');
function numberParser(str) {
var newValue = str;
var valueAsNumber;
if (newValue === null || newValue === undefined || newValue === '') {
valueAsNumber = null;
} else {
valueAsNumber = parseFloat(str);
}
return (isNaN(valueAsNumber) || valueAsNumber === null) ? str : valueAsNumber;
}
function checkStyleCondition(lValue, op, rValue){
if(op === 'equal'){
return lValue == rValue;
}
if(op === 'not_equal'){
return lValue != rValue;
}
if(op === 'greater'){
rValue = numberParser(rValue)
lValue = numberParser(lValue)
return lValue > rValue;
}
if(op === 'less'){
rValue = numberParser(rValue)
lValue = numberParser(lValue)
return lValue < rValue;
}
if(op === 'greater_or_equal'){
rValue = numberParser(rValue)
lValue = numberParser(lValue)
return lValue >= rValue;
}
if(op === 'less_or_equal'){
rValue = numberParser(rValue)
lValue = numberParser(lValue)
return lValue <= rValue;
}
//Comma separated range
if(op === 'in'){
return rValue.split(',').indexOf(lValue) >= 0;
}
//Comma separated range
if(op === 'not_in'){
return rValue.split(',').indexOf(lValue) == -1;
}
if(op === 'ends_with'){
return new RegExp(`${rValue}\$`).test(lValue);
}
if(op === 'starts_with'){
return new RegExp(`^${rValue}`).test(lValue);
}
if(op === 'contains'){
return new RegExp(`.*${rValue}.*`).test(lValue);
}
if(op === 'regexp'){
return new RegExp(rValue).test(lValue);
}
if(op === 'length'){
return lValue === null ? false : lValue.length === rValue;
}
if(op === 'length_less'){
return lValue === null ? false : lValue.length < rValue;
}
if(op === 'length_greater'){
return lValue === null ? false : lValue.length > rValue;
}
383
if(op === 'is_empty'){
return lValue.length === 0
}
if(op === 'between'){
return lValue > rValue[0] && lValue < rValue[1]
}
if(op === 'not_between'){
return !(lValue > rValue[0] && lValue < rValue[1])
}
if(op === 'is_not_empty'){
return lValue.length > 0
}
return false;
}
//@TODO: Needs refactoring
function createSemiDonutPolygonPoints(
intNumSteps,
floAngleStep,
floLongitude,
floLatitude,
floAntAzim,
floCellRadiusOuter,
floCellRadiusInner,
floCellHeight,
EarthRadius,
PI) {
let strSemiDonutPolygonPoints = "";
let floAntAzimStart = floAntAzim - intNumSteps / 2 * floAngleStep;
for(var i = 0; i < intNumSteps; i++ ){
const pointX = (floLatitude + 90 * floCellRadiusOuter * Math.cos(((floAntAzimStart + i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius));
const pointY = floLongitude + 90 * floCellRadiusOuter * Math.sin(((floAntAzimStart + i * floAngleStep) * PI / 180)) /
(PI / 2 * EarthRadius * Math.cos(((floLatitude + (floLatitude + 90 * floCellRadiusOuter * Math.cos(((floAntAzimStart + i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius))) / 2) * PI / 180));
strSemiDonutPolygonPoints = strSemiDonutPolygonPoints + pointY + "," + pointX + "," + floCellHeight + " ";
}
floAntAzimStart = floAntAzim + intNumSteps / 2 * floAngleStep;
for( var i = 0; i< intNumSteps; i++){
const pointX = (floLatitude + 90 * floCellRadiusInner * Math.cos(((floAntAzimStart - i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius));
const pointY = floLongitude + 90 * floCellRadiusInner * Math.sin(((floAntAzimStart - i * floAngleStep) * PI / 180)) /
(PI / 2 * EarthRadius * Math.cos(((floLatitude + (floLatitude + 90 * floCellRadiusInner * Math.cos(((floAntAzimStart - i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius))) / 2) * PI / 180));
strSemiDonutPolygonPoints = strSemiDonutPolygonPoints + pointY + "," + pointX + "," + floCellHeight + " ";
}
// closing the polygon with initial/end point
i = 0
floAntAzimStart = floAntAzim - intNumSteps / 2 * floAngleStep;
const pointX = (floLatitude + 90 * floCellRadiusOuter * Math.cos(((floAntAzimStart + i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius));
const pointY = floLongitude + 90 * floCellRadiusOuter * Math.sin(((floAntAzimStart + i * floAngleStep) * PI / 180)) /
(PI / 2 * EarthRadius * Math.cos(((floLatitude + (floLatitude + 90 * floCellRadiusOuter * Math.cos(((floAntAzimStart + i * floAngleStep) * PI / 180)) / (PI / 2 * EarthRadius))) / 2) * PI / 180));
strSemiDonutPolygonPoints = strSemiDonutPolygonPoints + pointY + "," + pointX + "," + floCellHeight + " ";
return strSemiDonutPolygonPoints;
}
/*
* Generate KML/Z file
*
* @param string type KML or KMZ
* @param object options
*/
async function generate(options, type){
//console.log("kml options: ", options);
//const fileType = type || 'kml';
//Generated file name
let fileName = path.join(app.getPath('downloads'), 'boda-lite.kml');;
let headers = [];
const dataFile = options.dataFile || null;
if(dataFile === null ) throw new Error("Data file not provided");
var workbook = XLSX.readFile(dataFile);
var firstSheetName = workbook.SheetNames[0];
var worksheet = workbook.Sheets[firstSheetName];
var range = XLSX.utils.decode_range(worksheet['!ref']);
let R = 0; //first row
for(var C = range.s.c; C <= range.e.c; ++C) {
var cellAddress = {c:C, r:R};
/* if an A1-style address is needed, encode the address */
var cellRef = XLSX.utils.encode_cell(cellAddress);
var cell = worksheet[cellRef];
headers.push(cell.v);
}
function getUniqueValuesForField(fieldName, filter){
let values = [];
const C = headers.indexOf(fieldName);
for(var R = range.s.r + 1; R <= range.e.r; ++R) {
//Check filter
let filterStatus = true;
const filterKeys = Object.keys(filter);
for(var k = 0; k < filterKeys.length; k++ ){
const filterKey = filterKeys[k];
const filterVal = filter[filterKey];
const keyIndex = headers.indexOf(filterKey);
const rowColVal= worksheet[XLSX.utils.encode_cell({c: keyIndex, r:R})].v;
if(filterVal !== rowColVal) { filterStatus = false; break } //skip this row's values
}
//skill row
if(!filterStatus) continue;
var cellAddress = {c:C, r:R};
/* if an A1-style address is needed, encode the address */
var cellRef = XLSX.utils.encode_cell(cellAddress);
var cell = worksheet[cellRef];
//skip empty values
if(cell === undefined) continue;
//Collect headers
if(values.indexOf(cell.v) < 0 ) values.push(cell.v);
}
return values
}
const latitudeIndex = headers.indexOf(options.latitudeField);
const longitudeIndex = headers.indexOf(options.longitudeField);
const azimuthIndex = headers.indexOf(options.azimuthField);
const cellLabelIndex = headers.indexOf(options.cellLabelField);
const EARTH_RADIUS_KM = 6371*1000; //km
function getPolygonCoordinates(latitude, longitude, azimuth, radius, height, intNumSteps){
const coordinates = createSemiDonutPolygonPoints( 5, 10, longitude, latitude, azimuth, radius, 0, height, EARTH_RADIUS_KM, Math.PI);
return coordinates;
}
function hexColorToKML(hex){
if(hex === null) return "";
const hx = hex.replace("#","")
var r = hx.slice(0,2)
var g = hx.slice(2,4)
var b = hx.slice(4)
return "ff" + `${b}${g}${r}`
}
function conditionTrue(condition, currentRow){
if(condition.type === 'group'){
const childrenIds = Object.keys(condition.children1);
const conjuction = condition.properties.condition;
//AND - start with true
//OR - start with false
let groupResult = conjuction === 'AND' ? true : false;
for(var p = 0; p < childrenIds.length; p++){
const pId = childrenIds[p];
const r = conditionTrue(condition["children1"][pId], currentRow);
groupResult = conjuction === 'AND' ? (groupResult && r) : (groupResult || r);
}
return groupResult;
}
if(condition.type === 'rule'){
const field = condition.properties.field;
const c = headers.indexOf(field);
const lValue = worksheet[XLSX.utils.encode_cell({c:c, r:currentRow})].v;
const operator = condition.properties.operator;
const value = condition.properties.value[0];
const valueSrc = condition.properties.valueSrc[0];
let rValue = value;
if(valueSrc === 'field'){
const c2 = headers.indexOf(value);
rValue = worksheet[XLSX.utils.encode_cell({c:c2, r:currentRow})].v;
}
return checkStyleCondition(lValue, operator, rValue);
}
return false;
}
//Get height, color and radius values
function getSomeValue(valObj, r){
//ValueType == Value
if( valObj.valueType === 'Value') return valObj.value;
if( valObj.valueType === 'Field'){
const c = headers.indexOf(valObj.value);
return worksheet[XLSX.utils.encode_cell({c:c, r:r})].v
}
if( valObj.valueType === 'Condition'){
const conditions = valObj.value;
for(var i = 0; i < conditions.length; i++){
const condition = conditions[i];
if(conditionTrue(condition.tree, r)){
let condVal = condition.value
if(condition.valueType === 'Field'){
const fieldIndex = headers.indexOf(condition.value);
return worksheet[XLSX.utils.encode_cell({c:fieldIndex, r:r})].v;
}else{
return condition.value;
}
}
}
}
//
return null;
}
function processFolders(folders, stream, filter){
if(folders.length === 0) {
for(var R = range.s.r + 1; R <= range.e.r; ++R) {
//DEBUG: STOP HERE FOR TESTING
//if(R === 2 ) return;
let filterStatus = true; // true when there is a match
//Check filter
const filterKeys = Object.keys(filter);
for(var k = 0; k < filterKeys.length; k++ ){
const filterKey = filterKeys[k];
const filterVal = filter[filterKey];
const keyIndex = headers.indexOf(filterKey);
if(worksheet[XLSX.utils.encode_cell({c: keyIndex, r:R})] === undefined) continue;
const rowColVal= worksheet[XLSX.utils.encode_cell({c: keyIndex, r:R})].v;
if(filterVal !== rowColVal) { filterStatus = false; break } //skip this row's values
}
//skill row
if(!filterStatus) continue;
if( worksheet[XLSX.utils.encode_cell({c:latitudeIndex, r:R})] === undefined){
log.warn(`LATITUDE value is missing! for row=${R} and column=${latitudeIndex+1}`);
continue;
}
const latitude = worksheet[XLSX.utils.encode_cell({c:latitudeIndex, r:R})].v;
const longitude = worksheet[XLSX.utils.encode_cell({c:longitudeIndex, r:R})].v;
const azimuth = worksheet[XLSX.utils.encode_cell({c:azimuthIndex, r:R})].v;
const cellLabel = worksheet[XLSX.utils.encode_cell({c:cellLabelIndex, r:R})].v ;
const height = getSomeValue(options.height, R);
const azSteps = 6;
const radius = getSomeValue(options.radius, R);
const color = hexColorToKML(getSomeValue(options.color, R)); //hexColorToAHex('#ff00ff');
let description = "";
if(options.descFields.length > 0){
description = "<table>";
for(var dIdx =0; dIdx < options.descFields.length; dIdx++){
const dF = options.descFields[dIdx];
const fI = headers.indexOf(dF);
let dV = "";
try{
dV = worksheet[XLSX.utils.encode_cell({c: fI, r: R})].v ;
}catch(e){
log.error(e)
}
description += `<tr><td>${dF}</td><td>${dV}</td></tr>`
}
description += "</table>";
}
//Generate sector coordinates
const polygonCoords = getPolygonCoordinates(latitude, longitude, azimuth, radius, height, azSteps );
//Open Folder for cell
stream.write('<Folder>\n');
stream.write(`<name>${cellLabel}</name>\n`);
stream.write('<Placemark>\n');
stream.write(`<name><![CDATA[${cellLabel}]]></name>\n`);
stream.write(`<description>${description}</description>\n`);
//Style
stream.write('<Style>\n');
stream.write('<PolyStyle>\n');
stream.write(`<color>${color}</color>\n`);
stream.write(`<colorMode>normal</colorMode>\n`);
stream.write(`<fill>1</fill>\n`);
stream.write('</PolyStyle>\n');
stream.write('</Style>\n');
stream.write('<Point>\n' );
stream.write('<altitudeMode>relativeToGround</altitudeMode>\n');
stream.write(`<coordinates>${latitude},${longitude},${azimuth}</coordinates>\n`);
stream.write('</Point>\n');
//stream.write('<LookAt>\n');
//stream.write(`<longitude>${latitude}</longitude>\n`);
//stream.write(`<latitude>${latitude}</latitude>\n`);
//stream.write('</LookAt>\n');
stream.write('<Polygon>\n');
stream.write('<tessellate>1</tessellate>\n');
stream.write('<altitudeMode>relativeToGround</altitudeMode>\n');
stream.write('<outerBoundaryIs>\n');
stream.write('<LinearRing>\n');
stream.write('<coordinates>\n');
stream.write(`${polygonCoords}\n`);
stream.write('</coordinates>\n');
stream.write('</LinearRing>\n');
stream.write('</outerBoundaryIs>\n');
stream.write('</Polygon>\n');
stream.write('</Placemark>\n');
//Close Folder tag
stream.write('</Folder>\n');
}
//generate kml based on data
//
return;
}
const folder = folders[0];
//remove first item
let folderCopy = [...folders];
folderCopy.splice(0,1);
const remainingFolders = folderCopy;
//Open value folder
if(folder.valueType === 'Value'){
stream.write('<Folder>\n');
stream.write(`<name>${folder.value}</name>\n`);
processFolders(remainingFolders, stream, {...filter});
stream.write('</Folder>\n');
}
if(folder.valueType === 'Field'){
const fieldName = folder.value;
const uqfieldValues = getUniqueValuesForField(fieldName, filter);
//iterate over unique field values
for(var j =0; j < uqfieldValues.length; j++){
const uqVal = uqfieldValues[j];
//Open value folder
stream.write('<Folder>\n');
stream.write(`<name>${uqVal}</name>\n`);
processFolders(remainingFolders, stream,
{
...filter,
[fieldName]: uqVal
});
stream.write('</Folder>\n');
}
}
}
var fs = require('fs');
await new Promise((resolve, reject) => {
var stream = fs.createWriteStream(fileName, {emitClose: true});
stream.on('error', function (err) {
log.err(err);
reject()
throw new Error("Error creating kml file.");
});
stream.on('finish', function () {
resolve();
});
stream.once('open', function(fd) {
stream.write('<?xml version="1.0" encoding="UTF-8"?>\n');
stream.write('<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom">\n');
stream.write('<Document>\n');
stream.write('<name>Boda-Lite KML</name>\n');
stream.write('<open>0</open>\n');
stream.write('<description>Generated by Boda-Lite KML Generator Utility</description>\n');
//stream.write(`
//<ScreenOverlay>
// <name>Legend: Boda-lite KML Utility</name>
// <Icon>
// <href>YourURL.html</href>
// </Icon>
// <overlayXY x="0" y="0" xunits="fraction" yunits="fraction"/>
// <screenXY x="25" y="95" xunits="pixels" yunits="pixels"/>
// <rotationXY x="0.5" y="0.5" xunits="fraction" yunits="fraction"/>
// <size x="0" y="0" xunits="pixels" yunits="pixels"/>
//</ScreenOverlay>`);
processFolders(options.folders, stream, {});
stream.write('</Document>\n');
stream.write('</kml>\n');
stream.end();
//resolve();
});
})
return fileName;
}
exports.generate = generate;