| 1 | <!DOCTYPE html> |
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| 2 | <html> |
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| 3 | <head> |
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| 4 | <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> |
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| 5 | <title>CPTMS Map v0.5.5</title> |
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| 6 | <style> |
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| 7 | /* Set the size of the div element that contains the map */ |
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| 8 | #mapdiv { |
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| 9 | height: 100%; |
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| 10 | width: 100%; |
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| 11 | } |
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| 12 | /* Makes the page fill the window. */ |
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| 13 | html, body { |
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| 14 | height: 100%; |
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| 15 | margin: 0; |
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| 16 | padding: 0; |
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| 17 | } |
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| 18 | #search-input { |
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| 19 | background-color: #17263c; /* #CD853F; /*#E6E6FA; /* lavender */ |
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| 20 | color: #E6E6FA; /* #FFEFD5; */ |
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| 21 | font-family: Roboto; |
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| 22 | font-size: 18px; |
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| 23 | font-weight: 400; |
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| 24 | margin-left: 12px; |
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| 25 | padding: 0 11px 0 13px; |
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| 26 | text-overflow: ellipsis; |
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| 27 | border-color: #746855; /* #4d90fe; */ |
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| 28 | width: 400px; |
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| 29 | } |
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| 30 | |
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| 31 | #search-input:focus { |
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| 32 | border-color: #E6E6FA; |
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| 33 | } |
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| 34 | |
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| 35 | #ctrButton { |
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| 36 | font-size: 40px; |
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| 37 | margin-right: 9px; |
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| 38 | background-color: #fff; |
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| 39 | color: #47476b; |
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| 40 | cursor: pointer; |
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| 41 | } |
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| 42 | |
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| 43 | </style> |
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| 44 | </head> |
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| 45 | <body> |
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| 46 | <!-- Version 5.5 renames title to CPTMS, loads static data on startup and dynamic data |
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| 47 | every ten seconds. |
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| 48 | Version 5.4 adds Search box and Center button |
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| 49 | Version 5.3 fixed dot color update defect, increased refresh rate to 10 sec. |
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| 50 | Version 5.2 places red dots overlapping yellow dots. |
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| 51 | Version 5.1 removes the map and street view buttons and the H3 tag. |
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| 52 | Version 5 uses precomputed perpendicular vector in dot adjustment function |
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| 53 | Version 4 Adjust the spacing between dots when the map is zoomed. |
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| 54 | Version 3 does loadGeoJson only once, and subsequently does an ajax load |
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| 55 | of the highways file, and selectively updates only those placePins whose |
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| 56 | color has changed. |
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| 57 | @author jdalbey 2019.2.17 |
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| 58 | --> |
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| 59 | <!-- The text area input for the Search Box --> |
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| 60 | <input id="search-input" class="controls" type="text" placeholder="Search Box"> |
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| 61 | <!--The div element where the map appears --> |
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| 62 | <div id="mapdiv"></div> |
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| 63 | <!--The div element where the center button appears --> |
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| 64 | <div id="ctrButton">⊕</div> |
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| 65 | <script> |
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| 66 | // a global variable for the google map |
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| 67 | var map; |
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| 68 | // a global dictionary to lookup a station's original coordinates |
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| 69 | var vds_coords = {}; |
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| 70 | // a global variable to hold locations of marked search places |
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| 71 | var placePins = []; |
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| 72 | // Constant name of dynamic json data file created by CADserver |
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| 73 | var kMapPointsFile = "highways.json"; |
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| 74 | // Constant name of initial (static) highways file used once at startup |
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| 75 | var kMapStartupFile = "highways_startup.json"; |
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| 76 | // Constant for map center location: The John Wayne Airport |
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| 77 | //var centerPoint = {lat: 33.687228, lng: -117.872148}; |
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| 78 | // Constant for map center location in District 12 |
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| 79 | var centerPoint = {lat: 33.693385, lng: -117.798937}; |
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| 80 | // Initial map zoom |
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| 81 | var initZoom = 11; |
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| 82 | // Dot colors used in traffic model to indicate free-flowing, slowed, and stopped traffic |
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| 83 | // and their associated zvalues so slower traffic dots are more visible. |
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| 84 | var colorZvalues = {"lime":10,"yellow":20,"red":30}; |
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| 85 | |
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| 86 | // Build a solid colored icon to use instead of the classic pin |
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| 87 | // Use a diamond on N and E directions, circle on S and W directions |
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| 88 | function dotSymbol(color,postmileID) //,direction) |
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| 89 | { |
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| 90 | var circle = google.maps.SymbolPath.CIRCLE; |
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| 91 | var diamond = 'M -1,0 0,-1 1,0 0,1 z'; |
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| 92 | var myShape = circle; |
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| 93 | // See if postmile name contains N or W letters |
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| 94 | //if ((postmileID.indexOf('N') != -1) || (postmileID.indexOf('W') != -1)) |
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| 95 | //{ |
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| 96 | // myShape = diamond |
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| 97 | //} |
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| 98 | return { |
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| 99 | path: myShape, |
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| 100 | scale: 5, |
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| 101 | strokeColor: "black", // the border color |
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| 102 | strokeWeight: 1, // the border thickness |
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| 103 | fillColor: color, |
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| 104 | fillOpacity: 1.0 |
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| 105 | }; |
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| 106 | } |
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| 107 | |
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| 108 | // Load the map data from a json file and style all the points |
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| 109 | function loadMapData() |
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| 110 | { |
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| 111 | // Load the static map data and call saveCoords when done |
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| 112 | map.data.loadGeoJson(kMapStartupFile,null,saveCoords) |
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| 113 | |
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| 114 | // Style the map data by applying the desired properties to each feature (marker) |
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| 115 | // The function will be called every time a feature's properties are updated. |
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| 116 | map.data.setStyle(function(feature) |
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| 117 | { |
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| 118 | //console.log(feature.getId() + " " + feature.getGeometry().get()); |
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| 119 | // Get the postmile id |
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| 120 | var name = feature.getId(); |
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| 121 | // Get the desired color value |
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| 122 | var ptColor = feature.getProperty("color"); |
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| 123 | var street = feature.getProperty("street"); |
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| 124 | // Build the marker |
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| 125 | var iconSymbol = dotSymbol(ptColor,name); |
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| 126 | // return the StyleOptions |
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| 127 | return { |
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| 128 | icon: iconSymbol, |
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| 129 | title: name + " @" + street, // set rollover text |
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| 130 | // set zIndex for slowed traffic to a higher value so they overlap |
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| 131 | zIndex: colorZvalues[ptColor] |
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| 132 | }; |
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| 133 | }); |
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| 134 | } |
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| 135 | // callback when load GeoJson completes |
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| 136 | // save each feature's Point as the original coordinates for later reference |
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| 137 | function saveCoords(features) |
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| 138 | { |
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| 139 | // Iterate over all the features in the map |
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| 140 | features.forEach(function(feature) |
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| 141 | { |
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| 142 | var pt = feature.getGeometry().get(); |
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| 143 | vds_coords[feature.getId()] = pt; // save the Point in a dictionary |
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| 144 | }); |
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| 145 | // update the dot colors from the dynamic json data |
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| 146 | updateMap(); |
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| 147 | // go adjust the marker coordinates so dots don't overlap |
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| 148 | adjustCoords(calcDistanceFactor()); |
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| 149 | } |
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| 150 | |
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| 151 | // magic formula controls distance between dots proportionate to zoom factor |
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| 152 | function calcDistanceFactor() |
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| 153 | { |
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| 154 | // 15 is maximum zoom, the point at which no adjusment is needed |
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| 155 | return (.0005*(15-map.getZoom())); |
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| 156 | } |
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| 157 | |
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| 158 | // Adjust the coordinates of dots so they appear side-by-side |
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| 159 | // The perpendicular vector for each dot has been provided, |
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| 160 | // so we just need to multiply by a scaling factor (adjAmount) |
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| 161 | // @param adjAmount amount by which to adjust coordinate |
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| 162 | function adjustCoords(adjAmount) |
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| 163 | { |
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| 164 | //console.log("adjusting coordinates"); |
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| 165 | // Adjust the NB points a slight amount |
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| 166 | map.data.forEach(function(feature) |
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| 167 | { |
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| 168 | // get the name of the current feature |
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| 169 | var name = feature.getId(); |
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| 170 | // lookup the original coordinates for this feature |
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| 171 | var coords = vds_coords[name]; |
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| 172 | |
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| 173 | //retrieve the perpendicular vector (precomputed) |
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| 174 | var perpx = feature.getProperty("perpx") |
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| 175 | var perpy = feature.getProperty("perpy") |
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| 176 | // Make adjustment and save it |
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| 177 | var myLat = coords.lat() + perpy * adjAmount |
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| 178 | var myLong = coords.lng() + perpx * adjAmount |
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| 179 | feature.setGeometry({lat:myLat, lng:myLong}); |
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| 180 | }); |
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| 181 | } |
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| 182 | |
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| 183 | // update the color (as needed) for a given marker |
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| 184 | function updateMarker(marker) |
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| 185 | { |
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| 186 | target = marker.id; |
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| 187 | newColor = marker.properties.color; |
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| 188 | // see if new color is different than current color |
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| 189 | currentFeature = map.data.getFeatureById(target); |
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| 190 | currentColor = currentFeature.getProperty("color"); |
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| 191 | // if a new color is desired then assign it to the feature's color property |
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| 192 | if (currentColor != newColor) |
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| 193 | { |
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| 194 | currentFeature.setProperty("color",newColor); |
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| 195 | // set zIndex for slowed traffic to a higher value so they overlap |
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| 196 | currentFeature.setProperty("zIndex", colorZvalues[newColor]); |
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| 197 | //console.log(target+" updated to "+newColor); |
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| 198 | } |
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| 199 | } |
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| 200 | |
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| 201 | // Load the dynamic highways file via ajax |
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| 202 | // Ref: https://codepen.io/KryptoniteDove/post/load-json-file-locally-using-pure-javascript |
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| 203 | function loadJSON(callback) { |
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| 204 | |
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| 205 | var xobj = new XMLHttpRequest(); |
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| 206 | xobj.overrideMimeType("application/json"); |
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| 207 | xobj.open('GET', kMapPointsFile, true); |
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| 208 | xobj.onreadystatechange = function () { |
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| 209 | if (xobj.readyState == 4 && xobj.status == "200") { |
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| 210 | // Required use of an anonymous callback as .open will NOT return a value but simply returns undefined in asynchronous mode |
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| 211 | callback(xobj.responseText); |
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| 212 | } |
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| 213 | }; |
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| 214 | xobj.send(null); |
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| 215 | } |
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| 216 | |
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| 217 | // Load the highways dynamic json file and update the map |
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| 218 | function updateMap() |
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| 219 | { |
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| 220 | var parsed_JSON; |
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| 221 | loadJSON(function(response) |
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| 222 | { |
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| 223 | // Parse JSON string into object |
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| 224 | parsed_JSON = JSON.parse(response); |
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| 225 | // Process each new marker - lookup in current map |
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| 226 | parsed_JSON.features.forEach(updateMarker); |
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| 227 | }); |
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| 228 | } |
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| 229 | |
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| 230 | // Initialize the center button (to re-center the map) |
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| 231 | function initCenter() |
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| 232 | { |
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| 233 | var centerBtnDiv = document.getElementById('ctrButton'); |
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| 234 | map.controls[google.maps.ControlPosition.RIGHT_CENTER].push(centerBtnDiv) |
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| 235 | centerBtnDiv.title = 'Click to recenter the map'; |
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| 236 | |
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| 237 | // Setup the click event listeners: reset center location and zoom factor |
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| 238 | centerBtnDiv.addEventListener('click', function() { |
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| 239 | map.setCenter(centerPoint); |
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| 240 | map.setZoom(initZoom); |
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| 241 | clearPlacePins(); |
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| 242 | }); |
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| 243 | } |
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| 244 | |
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| 245 | // Initialize the search box and listener |
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| 246 | function initSearch() |
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| 247 | { |
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| 248 | // Create the search box and link it to the UI element. |
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| 249 | var input = document.getElementById('search-input'); |
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| 250 | var searchBox = new google.maps.places.SearchBox(input); |
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| 251 | map.controls[google.maps.ControlPosition.TOP_LEFT].push(input); |
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| 252 | |
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| 253 | // Bias the SearchBox results towards current map's viewport. |
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| 254 | map.addListener('bounds_changed', function() { |
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| 255 | searchBox.setBounds(map.getBounds()); |
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| 256 | }); |
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| 257 | |
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| 258 | // Listen for the event fired when the user selects a prediction and retrieve |
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| 259 | // more details for that place. |
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| 260 | searchBox.addListener('places_changed', function() { |
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| 261 | var places = searchBox.getPlaces(); |
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| 262 | |
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| 263 | if (places.length == 0) { |
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| 264 | return; |
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| 265 | } |
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| 266 | |
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| 267 | clearPlacePins(); |
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| 268 | |
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| 269 | // Create a bounding region to include the search result places |
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| 270 | var bounds = new google.maps.LatLngBounds(); |
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| 271 | // For each place, get the icon, name and location. |
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| 272 | // There may be multiple search results |
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| 273 | places.forEach(function(place) { |
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| 274 | if (!place.geometry) { |
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| 275 | console.log("Returned place contains no geometry"); |
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| 276 | return; |
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| 277 | } |
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| 278 | |
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| 279 | // Create a marker for each place. |
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| 280 | placeMarker = new google.maps.Marker({ |
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| 281 | map: map, |
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| 282 | title: place.name, |
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| 283 | position: place.geometry.location |
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| 284 | }) |
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| 285 | |
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| 286 | // Click on the marker to remove it from the display |
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| 287 | placeMarker.addListener('click', function() { |
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| 288 | placeMarker.setMap(null); |
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| 289 | }); |
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| 290 | |
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| 291 | // Add this marker to the collection of current markers |
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| 292 | placePins.push(placeMarker); |
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| 293 | |
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| 294 | // Create a bounding region to include this place |
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| 295 | if (place.geometry.viewport) { |
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| 296 | // Only geocodes have viewport. |
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| 297 | bounds.union(place.geometry.viewport); |
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| 298 | } else { |
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| 299 | bounds.extend(place.geometry.location); |
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| 300 | } |
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| 301 | }); |
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| 302 | // This will pan and zoom to the area around the marker |
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| 303 | //map.fitBounds(bounds); |
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| 304 | // This will center the map on the new marker(s) but not zoom |
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| 305 | map.setCenter(bounds.getCenter()); |
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| 306 | }); |
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| 307 | } |
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| 308 | |
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| 309 | // Remove any place pins from a previous search |
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| 310 | function clearPlacePins() |
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| 311 | { |
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| 312 | placePins.forEach(function(marker) { |
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| 313 | marker.setMap(null); |
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| 314 | }); |
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| 315 | placePins = []; |
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| 316 | } |
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| 317 | |
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| 318 | // Initialize the map and load the points |
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| 319 | function initMap() |
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| 320 | { |
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| 321 | // Declare the map and where it belongs on the page |
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| 322 | map = new google.maps.Map( document.getElementById('mapdiv'), |
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| 323 | { |
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| 324 | zoom: initZoom, |
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| 325 | center: centerPoint, |
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| 326 | styles: night_mode, |
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| 327 | mapTypeControl: false, |
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| 328 | streetViewControl: false |
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| 329 | }); |
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| 330 | // setup the search box and center button |
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| 331 | initSearch(); |
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| 332 | initCenter(); |
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| 333 | |
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| 334 | loadMapData(); // go load the map data |
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| 335 | |
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| 336 | // Start a timer to refresh the map every 10 seconds |
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| 337 | var myTimer = setInterval(updateMap, 10000); |
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| 338 | // Listen for zoom changes and move the placePins so as to keep a nice |
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| 339 | // visual distance between them appropriate to the zoom factor |
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| 340 | map.addListener('zoom_changed', function() { |
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| 341 | // fetch how much the map is currently zoomed |
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| 342 | currentZoom = map.getZoom(); |
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| 343 | //console.log("Zoom changed to ",currentZoom); |
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| 344 | // only bother adjusting within this range |
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| 345 | if ((currentZoom <16) && (currentZoom>10)) |
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| 346 | { |
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| 347 | // magic formula controls distance between dots |
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| 348 | adjustCoords(calcDistanceFactor()); |
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| 349 | } |
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| 350 | }); |
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| 351 | |
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| 352 | } |
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| 353 | |
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| 354 | // Styles array for Night Mode map |
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| 355 | // Ref: https://developers.google.com/maps/documentation/javascript/styling |
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| 356 | var night_mode = [ |
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| 357 | {elementType: 'geometry', stylers: [{color: '#242f3e'}]}, |
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| 358 | {elementType: 'labels.text.stroke', stylers: [{color: '#242f3e'}]}, |
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| 359 | {elementType: 'labels.text.fill', stylers: [{color: '#746855'}]}, |
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| 360 | { |
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| 361 | featureType: 'administrative.locality', |
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| 362 | elementType: 'labels.text.fill', |
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| 363 | stylers: [{color: '#d59563'}] |
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| 364 | }, |
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| 365 | { |
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| 366 | featureType: 'poi', |
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| 367 | elementType: 'labels.text.fill', |
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| 368 | stylers: [{color: '#d59563'}] |
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| 369 | }, |
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| 370 | { |
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| 371 | featureType: 'poi.park', |
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| 372 | elementType: 'geometry', |
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| 373 | stylers: [{color: '#263c3f'}] |
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| 374 | }, |
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| 375 | { |
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| 376 | featureType: 'poi.park', |
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| 377 | elementType: 'labels.text.fill', |
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| 378 | stylers: [{color: '#6b9a76'}] |
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| 379 | }, |
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| 380 | { |
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| 381 | featureType: 'road', |
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| 382 | elementType: 'geometry', |
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| 383 | stylers: [{color: '#38414e'}] |
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| 384 | }, |
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| 385 | { |
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| 386 | featureType: 'road', |
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| 387 | elementType: 'geometry.stroke', |
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| 388 | stylers: [{color: '#212a37'}] |
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| 389 | }, |
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| 390 | { |
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| 391 | featureType: 'road', |
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| 392 | elementType: 'labels.text.fill', |
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| 393 | stylers: [{color: '#9ca5b3'}] |
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| 394 | }, |
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| 395 | { |
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| 396 | featureType: 'road.highway', |
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| 397 | elementType: 'geometry', |
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| 398 | stylers: [{color: '#746855'}] |
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| 399 | }, |
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| 400 | { |
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| 401 | featureType: 'road.highway', |
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| 402 | elementType: 'geometry.stroke', |
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| 403 | stylers: [{color: '#1f2835'}] |
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| 404 | }, |
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| 405 | { |
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| 406 | featureType: 'road.highway', |
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| 407 | elementType: 'labels.text.fill', |
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| 408 | stylers: [{color: '#f3d19c'}] |
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| 409 | }, |
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| 410 | { |
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| 411 | featureType: 'transit', |
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| 412 | elementType: 'geometry', |
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| 413 | stylers: [{color: '#2f3948'}] |
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| 414 | }, |
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| 415 | { |
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| 416 | featureType: 'transit.station', |
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| 417 | elementType: 'labels.text.fill', |
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| 418 | stylers: [{color: '#d59563'}] |
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| 419 | }, |
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| 420 | { |
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| 421 | featureType: 'water', |
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| 422 | elementType: 'geometry', |
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| 423 | stylers: [{color: '#17263c'}] |
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| 424 | }, |
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| 425 | { |
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| 426 | featureType: 'water', |
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| 427 | elementType: 'labels.text.fill', |
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| 428 | stylers: [{color: '#515c6d'}] |
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| 429 | }, |
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| 430 | { |
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| 431 | featureType: 'water', |
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| 432 | elementType: 'labels.text.stroke', |
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| 433 | stylers: [{color: '#17263c'}] |
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| 434 | } |
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| 435 | ] |
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| 436 | |
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| 437 | // Using John's API Key |
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| 438 | </script> |
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| 439 | <script async defer |
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| 440 | src="https://maps.googleapis.com/maps/api/js?key=AIzaSyD6iTyN0DjP-9OVkAgicyp4tkC10naE_B8&libraries=places&callback=initMap"> |
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| 441 | </script> |
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| 442 | </body> |
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| 443 | </html> |
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