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diff --git a/misc/openlayers/tests/manual/geodesic.html b/misc/openlayers/tests/manual/geodesic.html new file mode 100644 index 0000000..e642558 --- /dev/null +++ b/misc/openlayers/tests/manual/geodesic.html @@ -0,0 +1,160 @@ +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <link rel="stylesheet" href="../../theme/default/style.css" type="text/css" /> + <style type="text/css"> + #controlToggle li { + list-style: none; + } + #options { + position: relative; + width: 512px; + } + #output { + float: right; + } + + /* avoid pink tiles */ + .olImageLoadError { + background-color: transparent !important; + } + </style> + <script src="../../lib/OpenLayers.js"></script> + <script type="text/javascript"> + var map, measureControls; + function init(){ + map = new OpenLayers.Map('map'); + + var wmsLayer = new OpenLayers.Layer.OSM(); + + map.addLayers([wmsLayer]); + map.setCenter(new OpenLayers.LonLat(0,0), 5); + map.addControl(new OpenLayers.Control.LayerSwitcher()); + map.addControl(new OpenLayers.Control.MousePosition()); + map.addControl(new OpenLayers.Control.ScaleLine({geodesic: true})) + + // style the sketch fancy + var sketchSymbolizers = { + "Point": { + pointRadius: 4, + graphicName: "square", + fillColor: "white", + fillOpacity: 1, + strokeWidth: 1, + strokeOpacity: 1, + strokeColor: "#333333" + }, + "Line": { + strokeWidth: 3, + strokeOpacity: 1, + strokeColor: "#666666", + strokeDashstyle: "dash" + }, + "Polygon": { + strokeWidth: 2, + strokeOpacity: 1, + strokeColor: "#666666", + fillColor: "white", + fillOpacity: 0.3 + } + }; + var style = new OpenLayers.Style(); + style.addRules([ + new OpenLayers.Rule({symbolizer: sketchSymbolizers}) + ]); + var styleMap = new OpenLayers.StyleMap({"default": style}); + + measureControls = { + line: new OpenLayers.Control.Measure( + OpenLayers.Handler.Path, { + geodesic: true, + persist: true, + handlerOptions: { + layerOptions: {styleMap: styleMap} + } + } + ), + polygon: new OpenLayers.Control.Measure( + OpenLayers.Handler.Polygon, { + geodesic: true, + persist: true, + handlerOptions: { + layerOptions: {styleMap: styleMap} + } + } + ) + }; + + var control; + for(var key in measureControls) { + control = measureControls[key]; + control.events.on({ + "measure": handleMeasurements, + "measurepartial": handleMeasurements + }); + map.addControl(control); + } + + map.setCenter(new OpenLayers.LonLat(0, 0), 3); + + document.getElementById('noneToggle').checked = true; + } + + function handleMeasurements(event) { + var geometry = event.geometry; + var units = event.units; + var order = event.order; + var measure = event.measure; + var element = document.getElementById('output'); + var out = ""; + if(order == 1) { + out += "measure: " + measure.toFixed(3) + " " + units; + } else { + out += "measure: " + measure.toFixed(3) + " " + units + "<sup>2</" + "sup>"; + } + element.innerHTML = out; + } + + function toggleControl(element) { + for(key in measureControls) { + var control = measureControls[key]; + if(element.value == key && element.checked) { + control.activate(); + } else { + control.deactivate(); + } + } + } + </script> + </head> + <body onload="init()"> + <h1 id="title">OpenLayers Geodesic Measurement & ScaleLine</h1> + <p id="shortdesc"> + Tests geodesic measurement of distances and areas against a geodesic ScaleLine. + </p> + <div id="map" style="width: 512px; height: 300px;"></div> + <div id="options"> + <div id="output"> + </div> + <ul id="controlToggle"> + <li> + <input type="radio" name="type" value="none" id="noneToggle" + onclick="toggleControl(this);" checked="checked" /> + <label for="noneToggle">navigate</label> + </li> + <li> + <input type="radio" name="type" value="line" id="lineToggle" onclick="toggleControl(this);" /> + <label for="lineToggle">measure distance</label> + </li> + <li> + <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" /> + <label for="polygonToggle">measure area</label> + </li> + </ul> + </div> + <p>Zoom in so the ScaleLine shows units in the range of 10-100 km. Measure + the length of the ScaleLine. The result should be approximately the same + as the distance printed on the ScaleLine.</p> + <p>Zoom out so the ScaleLine shows units in the range of 100-500 km. Drag + the map to the South or North and see how the ScaleLine length changes.</p> + </body> +</html> |