API tools faq
paste
Advertisement
Guest User

projection

a guest
Feb 12th, 2018
80
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
HTML 6.49 KB | None | 0 0
raw download clone embed print report
  1. <!DOCTYPE html>
  2. <meta charset="utf-8">
  3. <script src="http://d3js.org/d3.v4.min.js"></script>
  4. <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  5. <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.6-rc.0/css/select2.min.css" rel="stylesheet" />
  6. <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.6-rc.0/js/select2.min.js"></script>
  7. <style type="text/css">
  8. .select2-results__option, .select2-selection__choice, .select2-search__field {
  9.     font-size: 20px !important;
  10. }
  11. h1 {
  12.    font-family: 'RavaliItalic';
  13.    font-weight: normal;
  14.    font-style: italic;
  15. }
  16. body {
  17.   background-color: #AAA;
  18. }
  19. .overlay {
  20.   fill: none;
  21.   pointer-events: all;
  22. }
  23. svg,div {
  24.     margin-left:auto;
  25.     margin-right:auto;
  26.     display:block;
  27. }
  28. #controls {
  29.     text-align:center;
  30. }
  31. .footer,li {
  32.    font-size: x-small;
  33. }
  34. a {
  35.     color:#7A2B1F;
  36. }
  37. select {
  38.     background-color:#777;
  39. }
  40. table {
  41.     width: 400px;
  42.     text-align: center;
  43.     border: 0;
  44.     margin-left: auto;
  45.     margin-right: auto;
  46. }
  47. td {
  48.     width: 50%;
  49. }
  50. </style>
  51. </head>
  52.  
  53. <body>
  54. <script>
  55.  
  56. var imgHeight = 3490, imgWidth = 6980,      // Image dimensions (don't change these)
  57.     width =  1300, height = 650,             // Dimensions of cropped region
  58.     translate0 = [0,0], scale0 = 0.25,  // Initial offset & scale
  59.     datum = {}
  60.    datumInit = {"x":650,"y":330,"scale":0.75};    //Transition Variables
  61.    
  62. svg = d3.select("body").append("svg")
  63.     .style("border","1px solid black")
  64.     .attr("width",  width + "px")
  65.     .attr("height", height + "px");
  66.  
  67. svg.append("rect")
  68.     .attr("class", "overlay")
  69.     .attr("width", width + "px")
  70.     .attr("height", height + "px");
  71.    
  72. zoomer = d3.zoom().scaleExtent([0.25, 4]).on("zoom", zoom);
  73.  
  74. svg = svg.append("g")
  75.     .attr("transform", "translate(" + translate0 + ")scale(" + scale0 + ")")
  76.     .call(zoomer)
  77.     .append("g");
  78.  
  79. svg.append("image")
  80.     .attr("width",  imgWidth + "px")
  81.     .attr("height", imgHeight + "px")
  82.     .attr("xlink:href", "TalanisFinal-noborder.jpg");
  83. svg.append("image")
  84.     .attr("width",  imgWidth + "px")
  85.     .attr("height", imgHeight + "px")
  86.     .attr("id","politics")
  87.     .attr("xlink:href", "TalanisPolitics-noborder.png");
  88. distline = svg.append("line")
  89.     .attr("display","none")
  90.     .attr("x1",0)
  91.     .attr("x2",0)
  92.     .attr("y1",0)
  93.     .attr("y2",0)
  94.     .attr("stroke-width",5)
  95.     .attr("stroke","red");
  96.    
  97. function zoom() {
  98.   svg.attr("transform", d3.event.transform);
  99.   console.log(""+d3.event.transform);
  100. }
  101.  
  102. //Construct form elements
  103. controls = d3.select("body").append("div").attr("id","controls");
  104. polbox = controls.append("div");
  105. polbox.append("input").attr("type","checkbox").attr("id","politicscb").attr("checked","true").on("change",politicschange);
  106. polbox.append("label").text("Politics Overlay");
  107. sel2 = controls.append("select").attr("id","sel2");
  108. distance = controls.append("div").attr('id','dist').style("display",'none');
  109.   distance.append("p").html("Distance between selected points: <span id='distspan'></span> miles");    
  110.  
  111. d3.json("Talanis.json",function(err,data) {
  112.   mapdataByRegion = d3.nest().key(function(d) { return d.area; }).sortKeys(d3.ascending)
  113.   .sortValues(function(a,b) { return a.name < b.name ? -1 : a.name > b.name ? 1 : a.name >= b.name ? 0 : NaN; } ).entries(data);
  114.   [1,2,3].forEach(function(z) {
  115.         d3.select("#sel"+z).selectAll("option").data(mapdataByRegion)
  116.             .enter()
  117.             .append("optgroup").attr("label",function(d) { return d.key; })
  118.             .selectAll("option").data(function (d) { return d.values; })
  119.                 .enter()
  120.                 .append("option").text(function(d) {return d.name}).attr('value',function(d) {return d.name});
  121.   });
  122. });
  123.  
  124. function politicschange() {
  125.     d3.select("#politics").style("display",(d3.select("#politicscb").property("checked")) ? 'inline' : 'none');
  126. }
  127.  
  128. function locate() {
  129.     distline.style("display","none");
  130.     distance.style("display","none");
  131.     datum = sel2.select("option[value=\""+$("#sel2").select2('data')[0]['id']+"\"]").data()[0];
  132.     console.log(datum);
  133.     svg.transition().duration(1000)
  134.     .call(zoomer.transform,transform);
  135. }
  136.  
  137. function dist() {
  138.     var R = 2266.45;
  139.     var datum1 =    sel2.select("option[value=\""+$("#sel2").select2('data')[0]['id']+"\"]").data()[0];
  140.     var datum2 = sel2.select("option[value=\""+$("#sel2").select2('data')[1]['id']+"\"]").data()[0];
  141.     if(datum1 == undefined || datum2 == undefined) { return; }
  142.     var lat1 = (datum1.y-(imgHeight/2))/(imgHeight/2)*Math.PI/2;
  143.     var lat2 = (datum2.y-(imgHeight/2))/(imgHeight/2)*Math.PI/2;
  144.     var dlat = Math.abs(lat1-lat2);
  145.     var dlon = Math.abs((((datum2.x-(imgWidth/2)) - (datum1.x-(imgWidth/2)))/(imgWidth/2))*Math.PI);
  146.     var a = Math.sin(dlat/2) * Math.sin(dlat/2) +
  147.         Math.cos(lat1) * Math.cos(lat2) *
  148.         Math.sin(dlon/2) * Math.sin(dlon/2);
  149.     var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
  150.     var d = R * c;
  151.     distline.attr("x1",datum1.x).attr("x2",datum2.x).attr("y1",datum1.y).attr("y2",datum2.y).style("display","inline");
  152.       var dx = Math.abs(datum1.x - datum2.x),
  153.       dy = Math.abs(datum1.y - datum2.y),
  154.       x = (datum1.x + datum2.x) / 2,
  155.       y = (datum1.y + datum2.y) / 2;
  156.       datum.scale = (3.25-(Math.max(dx/imgWidth,dy/imgHeight))*3.25)+0.74;
  157.       datum.x = x;
  158.       datum.y = y;
  159.     svg.transition().duration(1000).call(zoomer.transform,d3.zoomIdentity
  160.     .scale(4)
  161.     .translate(width/2, height/2)
  162.     .translate(-datum.x,-datum.y));
  163.     //svg.transition().duration(1000).call(zoomer.transform,d3.zoomIdentity
  164.     //.scale(datum.scale));
  165.     d3.select("#distspan").text(Math.round((d + 0.00001) * 100) / 100);
  166.     distance.style("display","block");
  167. }
  168.  
  169. function reset() {
  170.     distline.style("display","none");
  171.     distance.style("display","none");  
  172.     datum = {"x":650,"y":330,"scale":0.75};
  173.     svg.transition().duration(1000).call(zoomer.transform,d3.zoomIdentity
  174.     .scale(datumInit.scale)
  175.     .translate(width/2, height/2)
  176.     .translate(-datumInit.x,-datumInit.y));
  177. }
  178.  
  179. function transform() {
  180.     return d3.zoomIdentity
  181.     .scale(4)  
  182.     .translate(width/2, height/2)
  183.     .translate(-datum.x,-datum.y);
  184. }
  185.     svg.transition().duration(1000)
  186.     .call(zoomer.transform,d3.zoomIdentity
  187.     .scale(datumInit.scale)
  188.     .translate(width/2, height/2)
  189.     .translate(-datumInit.x,-datumInit.y));
  190. $("#sel2").select2({
  191.   width: "400px",
  192.   multiple: true,
  193.   maximumSelectionLength: 2,
  194.   placeholder: "Choose Location",
  195.   allowClear: true  
  196. });
  197.  
  198. $("#sel2").on('change', function (e) {
  199.     var numsel = $("#sel2").select2('data').length;
  200.     if(numsel == 2) { dist(); }
  201.     else if (numsel == 1) { locate(); }
  202.     else reset();
  203. });
  204. </script>
  205. </body>
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!