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<html> |
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<head> |
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<script src="../../lib/OpenLayers.js"></script> |
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<script type="text/javascript"> |
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function test_SphericalMercator_forwardMercator(t) { |
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t.plan(12); |
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var arctic = OpenLayers.Layer.SphericalMercator.forwardMercator(0, 85); |
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var antarctic = OpenLayers.Layer.SphericalMercator.forwardMercator(0, -85); |
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var hawaii = OpenLayers.Layer.SphericalMercator.forwardMercator(-180, 0); |
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var phillipines = OpenLayers.Layer.SphericalMercator.forwardMercator(180, 0); |
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var ne = OpenLayers.Layer.SphericalMercator.forwardMercator(180, 90); |
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var sw = OpenLayers.Layer.SphericalMercator.forwardMercator(-180, -90); |
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t.eq(arctic.lon, 0, "Arctic longitude is correct"); |
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t.eq(Math.round(arctic.lat), 19971869, "Arctic latitude is correct"); |
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t.eq(antarctic.lon, 0, "Antarctic longitude is correct"); |
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t.eq(Math.round(antarctic.lat), -19971869, "Antarctic latitude is correct"); |
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t.eq(Math.round(hawaii.lat), 0, "Hawaiian lat is correct"); |
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t.eq(hawaii.lon, -20037508.34, "Hawaiian lon is correct"); |
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t.eq(Math.round(phillipines.lat), 0, "Phillipines lat is correct"); |
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t.eq(phillipines.lon, 20037508.340, "Phillipines lon is correct"); |
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// Rounding errors make this not infinity |
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t.ok(ne.lat > 50000000, "NE lat is correct"); |
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t.eq(ne.lon, 20037508.34, "NE lon is correct"); |
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t.eq(sw.lat, -Infinity, "SW lat is correct"); |
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t.eq(sw.lon, -20037508.34, "SW lon is correct"); |
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} |
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function test_sphericalMercator_inverseMercator(t) { |
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t.plan(4); |
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var sw = OpenLayers.Layer.SphericalMercator.inverseMercator(-20037508.34, -20037508.34); |
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var ne = OpenLayers.Layer.SphericalMercator.inverseMercator(20037508.34, 20037508.34); |
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t.eq(sw.lon, -180, "Southwest lon correct"); |
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t.eq(ne.lon, 180, "Northeast lon correct"); |
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t.eq(sw.lat, -85.05112877980659, "Southwest lat correct"); |
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t.eq(ne.lat, 85.05112877980660, "Northeast lat correct"); |
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} |
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function strToFixed(str, dig) { |
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if(dig == undefined) { |
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dig = 5; |
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} |
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return str.replace(/(\d+\.\d+)/g, function(match) { |
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return parseFloat(match).toFixed(dig); |
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}); |
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} |
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function test_SphericalMercator_projectForward(t) { |
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t.plan(1); |
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var point = new OpenLayers.Geometry.Point(10, 20); |
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OpenLayers.Layer.SphericalMercator.projectForward(point); |
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t.eq(strToFixed(point.toString()), |
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strToFixed("POINT(1113194.9077777779 2273030.9266712805)"), |
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"point transforms from EPSG:4326 to Spherical Mercator"); |
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} |
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function test_SphericalMercator_to4326(t) { |
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t.plan(1); |
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var point = new OpenLayers.Geometry.Point(1113195, 2273031); |
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OpenLayers.Layer.SphericalMercator.projectInverse(point); |
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t.eq(strToFixed(point.toString()), |
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strToFixed("POINT(10.000000828446318 20.000000618997227)"), |
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"point transforms from EPSG:4326 to Spherical Mercator"); |
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} |
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function test_SphericalMercator_addTransform(t) { |
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// this class should add two methods to the |
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// OpenLayers.Projection.transforms object |
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t.plan(4); |
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var wgs84 = OpenLayers.Projection.transforms["EPSG:4326"]; |
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t.ok(wgs84 instanceof Object, "EPSG:4326 exists in table"); |
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var smerc = OpenLayers.Projection.transforms["EPSG:900913"]; |
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t.ok(smerc instanceof Object, "EPSG:900913 exists in table"); |
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t.ok(wgs84["EPSG:900913"] === OpenLayers.Layer.SphericalMercator.projectForward, |
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"from EPSG:4326 to EPSG:900913 correctly defined"); |
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t.ok(smerc["EPSG:4326"] === OpenLayers.Layer.SphericalMercator.projectInverse, |
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"from EPSG:900913 to EPSG:4326 correctly defined"); |
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} |
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</script> |
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</head> |
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<body> |
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</body> |
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</html> |
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