90 строки
3.0 KiB
JavaScript
90 строки
3.0 KiB
JavaScript
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require("../env");
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require("../../d3");
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require("../../d3.geo");
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var vows = require("vows"),
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assert = require("assert");
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var suite = vows.describe("d3.geo.azimuthal");
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suite.addBatch({
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"azimuthal.stereographic": {
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topic: function() {
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return d3.geo.azimuthal().mode("stereographic").translate([0, 0]).scale(100);
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},
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"Arctic": function(azimuthal) {
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var coords = azimuthal([0, 85]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], -91.633117, 1e-6);
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var lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], 85, 1e-6);
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},
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"Antarctic": function(azimuthal) {
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var coords = azimuthal([0, -85]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], 91.633117, 1e-6);
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var lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], -85, 1e-6);
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},
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"Hawaii": function(azimuthal) {
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var coords = azimuthal([-180, 0]);
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assert.equal(coords[0], -Infinity);
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assert.isTrue(isNaN(coords[1]));
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},
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"Phillipines": function(azimuthal) {
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var coords = azimuthal([180, 0]);
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assert.equal(coords[0], Infinity);
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assert.isTrue(isNaN(coords[1]));
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},
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"Inversion works for non-zero translation": function() {
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var azimuthal = d3.geo.azimuthal().mode("stereographic").translate([123, 99]).scale(100),
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coords = azimuthal([0, 85]),
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lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], 85, 1e-6);
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}
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},
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"azimuthal.orthographic": {
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topic: function() {
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return d3.geo.azimuthal().mode("orthographic").translate([0, 0]).scale(100);
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},
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"Arctic": function(azimuthal) {
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var coords = azimuthal([0, 85]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], -99.619469, 1e-6);
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var lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], 85, 1e-6);
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},
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"Antarctic": function(azimuthal) {
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var coords = azimuthal([0, -85]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], 99.619469, 1e-6);
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var lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], -85, 1e-6);
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},
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"Hawaii": function(azimuthal) {
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var coords = azimuthal([-180, 0]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], 0, 1e-6);
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},
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"Phillipines": function(azimuthal) {
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var coords = azimuthal([180, 0]);
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assert.inDelta(coords[0], 0, 1e-6);
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assert.inDelta(coords[1], 0, 1e-6);
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},
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"Inversion works for non-zero translation": function() {
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var azimuthal = d3.geo.azimuthal().mode("orthographic").translate([123, 99]).scale(100),
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coords = azimuthal([0, 85]),
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lonlat = azimuthal.invert(coords);
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assert.inDelta(lonlat[0], 0, 1e-6);
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assert.inDelta(lonlat[1], 85, 1e-6);
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}
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}
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});
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suite.export(module);
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