qwc2/utils/MeasureUtils.js

QGIS Web Client

/**
 * Copyright 2016 GeoSolutions Sas
 * Copyright 2016-2024 Sourcepole AG
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree.
 */import ol from"openlayers";import ConfigUtils from"./ConfigUtils";import CoordinatesUtils from"./CoordinatesUtils";import LocaleUtils from"./LocaleUtils";var MeasureUtils={getFormattedBearingValue:function getFormattedBearingValue(){var azimuth=arguments.length>0&&arguments[0]!==undefined?arguments[0]:0;var format=ConfigUtils.getConfigProp("bearingFormat")||"bearing";var precision=ConfigUtils.getConfigProp("bearingPrecision")||0;var roundToPrecision=function roundToPrecision(val){return Math.round((val+Number.EPSILON)*Math.pow(10,precision))/Math.pow(10,precision)};var normalizedAzimuth=(azimuth%360+360)%360;if(format==="bearing"){var bearing="";if(normalizedAzimuth>=0&&normalizedAzimuth<90){bearing="N ".concat(this.degToDms(normalizedAzimuth)," E")}else if(normalizedAzimuth>90&&normalizedAzimuth<=180){bearing="S ".concat(this.degToDms(180-normalizedAzimuth)," E")}else if(normalizedAzimuth>180&&normalizedAzimuth<270){bearing="S ".concat(this.degToDms(normalizedAzimuth-180)," W")}else if(normalizedAzimuth>=270&&normalizedAzimuth<=360){bearing="N ".concat(this.degToDms(360-normalizedAzimuth)," W")}return bearing}if(format==="azimuth"){return"".concat(roundToPrecision(normalizedAzimuth),"\xB0")}if(format==="azimuth180"){if(normalizedAzimuth<=180){return"".concat(roundToPrecision(normalizedAzimuth),"\xB0")}else{return"".concat(roundToPrecision(normalizedAzimuth-360),"\xB0")}}if(format==="bearingEW"){if(normalizedAzimuth<180){return"".concat(roundToPrecision(normalizedAzimuth),"\xB0E")}else if(normalizedAzimuth>180){return"".concat(roundToPrecision(360-normalizedAzimuth),"\xB0W")}else{return"180\xB0"}}return"".concat(roundToPrecision(normalizedAzimuth),"\xB0")},formatDuration:function formatDuration(valueSeconds){return new Date(valueSeconds*1000).toISOString().slice(11,19)},formatMeasurement:function formatMeasurement(valueMetric,isArea){var unit=arguments.length>2&&arguments[2]!==undefined?arguments[2]:"metric";var decimals=arguments.length>3&&arguments[3]!==undefined?arguments[3]:-1;var withUnit=arguments.length>4&&arguments[4]!==undefined?arguments[4]:true;if(decimals<0){decimals=ConfigUtils.getConfigProp("measurementPrecision",null,2)}var result="";var unitlabel=unit;switch(unit){case"metric":if(isArea){if(valueMetric>1000000){result=LocaleUtils.toLocaleFixed(valueMetric/1000000,decimals);unitlabel="km\xB2"}else if(valueMetric>10000){result=LocaleUtils.toLocaleFixed(valueMetric/10000,decimals);unitlabel="ha"}else{result=LocaleUtils.toLocaleFixed(valueMetric,decimals);unitlabel="m\xB2"}}else{if(valueMetric>1000){result=LocaleUtils.toLocaleFixed(valueMetric/1000,decimals);unitlabel="km"}else{result=LocaleUtils.toLocaleFixed(valueMetric,decimals);unitlabel="m"}}break;case"imperial":if(isArea){if(valueMetric>2.58999*1000000){result=LocaleUtils.toLocaleFixed(valueMetric*3.86102159e-7,decimals);unitlabel="mi\xB2"}else if(valueMetric>4046.86){result=LocaleUtils.toLocaleFixed(valueMetric*0.0001,decimals);unitlabel="acre"}else{result=LocaleUtils.toLocaleFixed(valueMetric*10.7639,decimals);unitlabel="ft\xB2"}}else{if(valueMetric>1609.34){result=LocaleUtils.toLocaleFixed(valueMetric*0.000621371,decimals);unitlabel="mi"}else{result=LocaleUtils.toLocaleFixed(valueMetric*3.28084,decimals);unitlabel="ft"}}break;case"m":result=LocaleUtils.toLocaleFixed(valueMetric,decimals);break;case"ft":result=LocaleUtils.toLocaleFixed(valueMetric*3.28084,decimals);break;case"km":result=LocaleUtils.toLocaleFixed(valueMetric*0.001,decimals);break;case"mi":result=LocaleUtils.toLocaleFixed(valueMetric*0.000621371,decimals);break;case"sqm":result=LocaleUtils.toLocaleFixed(valueMetric,decimals);unitlabel="m\xB2";break;case"sqft":result=LocaleUtils.toLocaleFixed(valueMetric*10.7639,decimals);unitlabel="ft\xB2";break;case"sqkm":result=LocaleUtils.toLocaleFixed(valueMetric*0.000001,decimals);unitlabel="km\xB2";break;case"sqmi":result=LocaleUtils.toLocaleFixed(valueMetric*3.86102159e-7,decimals);unitlabel="mi\xB2";break;case"ha":result=LocaleUtils.toLocaleFixed(valueMetric*0.0001,decimals);break;case"acre":result=LocaleUtils.toLocaleFixed(valueMetric*0.000247105381467,decimals);break;default:result=LocaleUtils.toLocaleFixed(valueMetric,decimals);break}if(withUnit){result+=" "+unitlabel}return result},getFormattedLength:function getFormattedLength(unit,length){var decimals=arguments.length>2&&arguments[2]!==undefined?arguments[2]:2;var withUnit=arguments.length>3&&arguments[3]!==undefined?arguments[3]:true;var result="";switch(unit){case"m":result=LocaleUtils.toLocaleFixed(length,decimals);break;case"ft":result=LocaleUtils.toLocaleFixed(length*3.28084,decimals);break;case"km":result=LocaleUtils.toLocaleFixed(length*0.001,decimals);break;case"mi":result=LocaleUtils.toLocaleFixed(length*0.000621371,decimals);break;default:result=LocaleUtils.toLocaleFixed(length,decimals);break}if(withUnit){result+=" "+unit}return result},convertLength:function convertLength(length,fromUnit,toUnit){var lengthMeters=length;switch(fromUnit){case"m":lengthMeters=length;break;case"ft":lengthMeters=length*0.3048;break;case"km":lengthMeters=length*1000;break;case"mi":lengthMeters=length*1609.34;break;default:lengthMeters=length;break}switch(toUnit){case"m":return lengthMeters;case"ft":return lengthMeters*3.28084;case"km":return lengthMeters*0.001;case"mi":return lengthMeters*0.000621371;default:return lengthMeters}},getFormattedArea:function getFormattedArea(unit,area){var decimals=arguments.length>2&&arguments[2]!==undefined?arguments[2]:2;var withUnit=arguments.length>3&&arguments[3]!==undefined?arguments[3]:true;var result="";var unitlabel=unit;switch(unit){case"sqm":result=LocaleUtils.toLocaleFixed(area,decimals);unitlabel="m\xB2";break;case"sqft":result=LocaleUtils.toLocaleFixed(area*10.7639,decimals);unitlabel="ft\xB2";break;case"sqkm":result=LocaleUtils.toLocaleFixed(area*0.000001,decimals);unitlabel="km\xB2";break;case"sqmi":result=LocaleUtils.toLocaleFixed(area*3.86102159e-7,decimals);unitlabel="mi\xB2";break;case"ha":result=LocaleUtils.toLocaleFixed(area*0.0001,decimals);break;case"acre":result=LocaleUtils.toLocaleFixed(area*0.000247105381467,decimals);break;default:result=LocaleUtils.toLocaleFixed(area,decimals);break}if(withUnit){result+=" "+unitlabel}return result},degToDms:function degToDms(deg){// convert decimal deg to minutes and seconds
var d=Math.floor(deg);var minfloat=(deg-d)*60;var m=Math.floor(minfloat);var secfloat=(minfloat-m)*60;var s=Math.floor(secfloat);return""+d+"\xB0 "+m+"' "+s+"'' "},updateFeatureMeasurements:function updateFeatureMeasurements(feature,geomType,featureCrs,settings){var _settings$displayCrs;var geodesic=ConfigUtils.getConfigProp("geodesicMeasurements");var measurements={lenUnit:settings.lenUnit,areaUnit:settings.areaUnit};var displayCrs=(_settings$displayCrs=settings.displayCrs)!==null&&_settings$displayCrs!==void 0?_settings$displayCrs:featureCrs;feature.set("label","");feature.set("segment_labels",undefined);var geom=feature.getGeometry();if(geomType==="Point"){feature.set("label",CoordinatesUtils.getFormattedCoordinate(geom.getCoordinates(),featureCrs,displayCrs))}else if(geomType==="LineString"){var lengths=MeasureUtils.computeSegmentLengths(geom.getCoordinates(),featureCrs,geodesic);measurements.segment_lengths=lengths;measurements.length=lengths.reduce(function(sum,len){return sum+len},0);feature.set("segment_labels",lengths.map(function(length){return MeasureUtils.formatMeasurement(length,false,settings.lenUnit)}))}else if(["Ellipse","Polygon","Square","Box"].includes(geomType)){var area=MeasureUtils.computeArea(geom,featureCrs,geodesic);measurements.area=area;feature.set("label",MeasureUtils.formatMeasurement(area,true,settings.areaUnit))}else if(geomType==="Circle"){var radius=geom.getRadius();measurements.radius=radius;feature.set("label","r = "+MeasureUtils.formatMeasurement(radius,false,settings.lenUnit))}else if(geomType==="Bearing"){var coo=geom.getCoordinates();measurements.bearing=CoordinatesUtils.calculateAzimuth(coo[0],coo[1],featureCrs);feature.set("label",MeasureUtils.getFormattedBearingValue(measurements.bearing))}feature.set("measurements",measurements)},computeSegmentLengths:function computeSegmentLengths(coordinates,featureCrs,geodesic){var lengths=[];var units=CoordinatesUtils.getUnits(featureCrs);if(geodesic||units==="degrees"){var wgsCoo=coordinates.map(function(coo){return CoordinatesUtils.reproject(coo,featureCrs,"EPSG:4326")});for(var i=0;i<wgsCoo.length-1;++i){lengths.push(ol.sphere.getDistance(wgsCoo[i],wgsCoo[i+1]))}}else{var conv=units==="feet"?0.3048:1;for(var _i=0;_i<coordinates.length-1;++_i){var dx=coordinates[_i+1][0]-coordinates[_i][0];var dy=coordinates[_i+1][1]-coordinates[_i][1];lengths.push(Math.sqrt(dx*dx+dy*dy)*conv)}}return lengths},computeArea:function computeArea(geometry,featureCrs,geodesic){var units=CoordinatesUtils.getUnits(featureCrs);if(geodesic||units==="degrees"){return ol.sphere.getArea(geometry,{projection:featureCrs})}else{var conv=units==="feet"?0.3048:1;return geometry.getArea()*conv*conv}}};export default MeasureUtils;