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azimuthal-test.js
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azimuthal-test.js
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require("../env");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.geo.azimuthal");
suite.addBatch({
"azimuthal.stereographic": {
topic: function() {
return d3.geo.azimuthal().mode("stereographic").translate([0, 0]).scale(100);
},
"origin": function(azimuthal) {
var coords = azimuthal([0, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Arctic": function(azimuthal) {
var coords = azimuthal([0, 85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], -91.633117, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(azimuthal) {
var coords = azimuthal([0, -85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 91.633117, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], -85, 1e-6);
},
"Hawaii": function(azimuthal) {
var coords = azimuthal([-180, 0]);
assert.equal(coords[0], -Infinity);
assert.isTrue(isNaN(coords[1]));
},
"Phillipines": function(azimuthal) {
var coords = azimuthal([180, 0]);
assert.equal(coords[0], Infinity);
assert.isTrue(isNaN(coords[1]));
},
"Inversion works for non-zero translation": function() {
var azimuthal = d3.geo.azimuthal().mode("stereographic").translate([123, 99]).scale(100),
coords = azimuthal([0, 85]),
lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
},
"azimuthal.orthographic": {
topic: function() {
return d3.geo.azimuthal().mode("orthographic").translate([0, 0]).scale(100);
},
"origin": function(azimuthal) {
var coords = azimuthal([0, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Arctic": function(azimuthal) {
var coords = azimuthal([0, 85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], -99.619469, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(azimuthal) {
var coords = azimuthal([0, -85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 99.619469, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], -85, 1e-6);
},
"Hawaii": function(azimuthal) {
var coords = azimuthal([-180, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Phillipines": function(azimuthal) {
var coords = azimuthal([180, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Inversion works for non-zero translation": function() {
var azimuthal = d3.geo.azimuthal().mode("orthographic").translate([123, 99]).scale(100),
coords = azimuthal([0, 85]),
lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
},
"azimuthal.gnomonic": {
topic: function() {
return d3.geo.azimuthal().mode("gnomonic").translate([0, 0]).scale(100);
},
"origin": function(azimuthal) {
var coords = azimuthal([0, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Arctic": function(azimuthal) {
var coords = azimuthal([0, 85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], -1143.005230, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(azimuthal) {
var coords = azimuthal([0, -85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 1143.005230, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], -85, 1e-6);
},
"Hawaii": function(azimuthal) {
var coords = azimuthal([-180, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Phillipines": function(azimuthal) {
var coords = azimuthal([180, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Inversion works for non-zero translation": function() {
var azimuthal = d3.geo.azimuthal().mode("stereographic").translate([123, 99]).scale(100),
coords = azimuthal([0, 85]),
lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
},
"azimuthal.equidistant": {
topic: function() {
return d3.geo.azimuthal().mode("equidistant").translate([0, 0]).scale(100);
},
"origin": function(azimuthal) {
var coords = azimuthal([0, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Arctic": function(azimuthal) {
var coords = azimuthal([0, 85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], -148.352986, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(azimuthal) {
var coords = azimuthal([0, -90]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 157.079632, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], -90, 1e-6);
},
"Hawaii": function(azimuthal) {
var coords = azimuthal([-180, 0]);
assert.inDelta(coords[0], -314.159265, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], -180, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Phillipines": function(azimuthal) {
var coords = azimuthal([180, 0]);
assert.inDelta(coords[0], 314.159265, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 180, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Inversion works for non-zero translation": function() {
var azimuthal = d3.geo.azimuthal().mode("stereographic").translate([123, 99]).scale(100),
coords = azimuthal([0, 85]),
lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
},
"azimuthal.equalarea": {
topic: function() {
return d3.geo.azimuthal().mode("equalarea").translate([0, 0]).scale(100);
},
"origin": function(azimuthal) {
var coords = azimuthal([0, 0]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 0, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 0, 1e-6);
},
"Arctic": function(azimuthal) {
var coords = azimuthal([0, 85]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], -135.118041, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
},
"Antarctic": function(azimuthal) {
var coords = azimuthal([0, -90]);
assert.inDelta(coords[0], 0, 1e-6);
assert.inDelta(coords[1], 141.421356, 1e-6);
var lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 180, 1e-6);
assert.inDelta(lonlat[1], -90, 1e-6);
},
"Hawaii": function(azimuthal) {
var coords = azimuthal([-180, 0]);
assert.equal(coords[0], -Infinity);
assert.isTrue(isNaN(coords[1]));
},
"Phillipines": function(azimuthal) {
var coords = azimuthal([180, 0]);
assert.equal(coords[0], Infinity);
assert.isTrue(isNaN(coords[1]));
},
"Inversion works for non-zero translation": function() {
var azimuthal = d3.geo.azimuthal().mode("stereographic").translate([123, 99]).scale(100),
coords = azimuthal([0, 85]),
lonlat = azimuthal.invert(coords);
assert.inDelta(lonlat[0], 0, 1e-6);
assert.inDelta(lonlat[1], 85, 1e-6);
}
}
});
suite.export(module);