d3-geo - npm Package Compare versions

Comparing version 1.0.0 to 1.1.0

build/d3-geo.min.js

@@ -1,2 +0,2 @@
-// https://d3js.org/d3-geo/ Version 1.0.0. Copyright 2016 Mike Bostock.
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index.js

@@ -13,16 +13,16 @@ export {default as geoArea} from "./src/area";
 export {default as geoAlbersUsa} from "./src/projection/albersUsa";
-export {default as geoAzimuthalEqualArea} from "./src/projection/azimuthalEqualArea";
-export {default as geoAzimuthalEquidistant} from "./src/projection/azimuthalEquidistant";
-export {default as geoConicConformal} from "./src/projection/conicConformal";
-export {default as geoConicEqualArea} from "./src/projection/conicEqualArea";
-export {default as geoConicEquidistant} from "./src/projection/conicEquidistant";
-export {default as geoEquirectangular} from "./src/projection/equirectangular";
-export {default as geoGnomonic} from "./src/projection/gnomonic";
+export {default as geoAzimuthalEqualArea, azimuthalEqualAreaRaw as geoAzimuthalEqualAreaRaw} from "./src/projection/azimuthalEqualArea";
+export {default as geoAzimuthalEquidistant, azimuthalEquidistantRaw as geoAzimuthalEquidistantRaw} from "./src/projection/azimuthalEquidistant";
+export {default as geoConicConformal, conicConformalRaw as geoConicConformalRaw} from "./src/projection/conicConformal";
+export {default as geoConicEqualArea, conicEqualAreaRaw as geoConicEqualAreaRaw} from "./src/projection/conicEqualArea";
+export {default as geoConicEquidistant, conicEquidistantRaw as geoConicEquidistantRaw} from "./src/projection/conicEquidistant";
+export {default as geoEquirectangular, equirectangularRaw as geoEquirectangularRaw} from "./src/projection/equirectangular";
+export {default as geoGnomonic, gnomonicRaw as geoGnomonicRaw} from "./src/projection/gnomonic";
 export {default as geoProjection, projectionMutator as geoProjectionMutator} from "./src/projection/index";
-export {default as geoMercator} from "./src/projection/mercator";
-export {default as geoOrthographic} from "./src/projection/orthographic";
-export {default as geoStereographic} from "./src/projection/stereographic";
-export {default as geoTransverseMercator} from "./src/projection/transverseMercator";
+export {default as geoMercator, mercatorRaw as geoMercatorRaw} from "./src/projection/mercator";
+export {default as geoOrthographic, orthographicRaw as geoOrthographicRaw} from "./src/projection/orthographic";
+export {default as geoStereographic, stereographicRaw as geoStereographicRaw} from "./src/projection/stereographic";
+export {default as geoTransverseMercator, transverseMercatorRaw as geoTransverseMercatorRaw} from "./src/projection/transverseMercator";
 export {default as geoRotation} from "./src/rotation";
 export {default as geoStream} from "./src/stream";
 export {default as geoTransform} from "./src/transform";

package.json

 {
   "name": "d3-geo",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Shapes and calculators for spherical coordinates.",
@@ -26,3 +26,3 @@ "keywords": [
     "pretest": "rm -rf build && mkdir build && rollup --banner \"$(preamble)\" -f umd -g d3-array:d3 -n d3 -o build/d3-geo.js -- index.js",
-    "test": "tape 'test/**/*-test.js' && test/compare-images && eslint index.js src",
+    "test": "tape 'test/**/*-test.js' && mkdir -p test/output && test/compare-images && eslint index.js src",
     "prepublish": "npm run test && uglifyjs --preamble \"$(preamble)\" build/d3-geo.js -c -m -o build/d3-geo.min.js",
@@ -29,0 +29,0 @@ "postpublish": "VERSION=`node -e 'console.log(require(\"./package.json\").version)'`; git push && git push --tags && cp build/d3-geo.js ../d3.github.com/d3-geo.v1.js && cp build/d3-geo.min.js ../d3.github.com/d3-geo.v1.min.js && cd ../d3.github.com && git add d3-geo.v1.js d3-geo.v1.min.js && git commit -m \"d3-geo ${VERSION}\" && git push && cd - && zip -j build/d3-geo.zip -- LICENSE README.md build/d3-geo.js build/d3-geo.min.js"

README.md

@@ -41,5 +41,3 @@ # d3-geo
 * [Spherical Shapes](#spherical-shapes)
-* [Paths](#paths)
 * [Projections](#projections)
-* [Streams](#streams)
 
@@ -174,3 +172,3 @@ ### Spherical Math
 
-### Paths
+### Projections
 
@@ -252,7 +250,5 @@ The geographic path generator, [d3.geoPath](#geoPath), is similar to the shape generators in [d3-shape](https://github.com/d3/d3-shape): given a GeoJSON geometry or feature object, it generates an SVG path data string or [renders the path to a Canvas](http://bl.ocks.org/mbostock/3783604). Canvas is recommended for dynamic or interactive projections to improve performance.
 
-### Projections
-
 <a href="#geoProjection" name="geoProjection">#</a> d3.<b>geoProjection</b>(<i>project</i>)
 
-Constructs a new projection from the specified *project* function. The *project* function takes the *longitude* and *latitude* of a given point in [radians](http://mathworld.wolfram.com/Radian.html), often referred to as *lambda* (λ) and *phi* (φ), and returns a two-element array [*x*, *y*] representing its unit projection. The *project* function does not need to scale or translate the point, as these are applied automatically by [*projection*.scale](#projection_scale), [*projection*.translate](#projection_translate), and [*projection*.center](#projection_center). Likewise, the *project* function does not need to perform any spherical rotation, as [*projection*.rotate](#projection_rotate) is applied prior to projection.
+Constructs a new projection from the specified [raw projection](#raw-projections), *project*. The *project* function takes the *longitude* and *latitude* of a given point in [radians](http://mathworld.wolfram.com/Radian.html), often referred to as *lambda* (λ) and *phi* (φ), and returns a two-element array [*x*, *y*] representing its unit projection. The *project* function does not need to scale or translate the point, as these are applied automatically by [*projection*.scale](#projection_scale), [*projection*.translate](#projection_translate), and [*projection*.center](#projection_center). Likewise, the *project* function does not need to perform any spherical rotation, as [*projection*.rotate](#projection_rotate) is applied prior to projection.
 
@@ -271,8 +267,8 @@ For example, a spherical Mercator projection can be implemented as:
 
-Constructs a new projection from the specified *project* function *factory*, returning a *mutate* function to call whenever the raw projection function changes. For example, a conic projection typically has two configurable parallels. A suitable *factory* function would be:
+Constructs a new projection from the specified [raw projection](#raw-projections) *factory* and returns a *mutate* function to call whenever the raw projection function changes. The *factory* must return a raw projection. The returned *mutate* function returns the wrapped projection. For example, a conic projection typically has two configurable parallels. A suitable *factory* function would be:
 
 ```js
 // y0 and y1 represent two parallels
-function conicFactory(y0, y1) {
-  return function conic(x, y) {
+function conicFactory(phi0, phi1) {
+  return function conicRaw(lambda, phi) {
     return […, …];
@@ -286,10 +282,10 @@ };
 ```js
-function conic() {
-  var y0 = 29.5,
-      y1 = 45.5,
+function conicCustom() {
+  var phi0 = 29.5,
+      phi1 = 45.5,
       mutate = d3.geoProjectionMutator(conicFactory),
-      projection = mutate(y0, y1);
+      projection = mutate(phi0, phi1);
 
   projection.parallels = function(_) {
-    return arguments.length ? mutate(y0 = +_[0], y1 = +_[1]) : [y0, y1];
+    return arguments.length ? mutate(phi0 = +_[0], phi1 = +_[1]) : [phi0, phi1];
   };
@@ -347,63 +343,77 @@
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/albers.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/albers.png" width="480" height="250">](http://bl.ocks.org/mbostock/3734308)
 
-See also [*conic*.parallels](#conic_parallels).
+The Albers’ equal area-conic projection. This is a U.S.-centric configuration of [d3.geoConicEqualArea](#geoConicEqualArea).
 
 <a href="#geoAlbersUsa" name="geoAlbersUsa">#</a> d3.<b>geoAlbersUsa</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/albersUsa.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/albersUsa.png" width="480" height="250">](http://bl.ocks.org/mbostock/4090848)
 
+This is a U.S.-centric composite projection of three [d3.geoConicEqualArea](#geoConicEqualArea) projections: [d3.geoAlbers](#geoAlbers) is used for the lower forty-eight states, and separate conic equal-area projections are used for Alaska and Hawaii. Note that the scale for Alaska is diminished: it is projected at 0.35× its true relative area.
+
 <a href="#geoAzimuthalEqualArea" name="geoAzimuthalEqualArea">#</a> d3.<b>geoAzimuthalEqualArea</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/azimuthalEqualArea.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/azimuthalEqualArea.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757101)
 
+The azimuthal equal-area projection.
+
 <a href="#geoAzimuthalEquidistant" name="geoAzimuthalEquidistant">#</a> d3.<b>geoAzimuthalEquidistant</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/azimuthalEquidistant.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/azimuthalEquidistant.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757110)
 
+The azimuthal equidistant projection.
+
 <a href="#geoConicConformal" name="geoConicConformal">#</a> d3.<b>geoConicConformal</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/conicConformal.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/conicConformal.png" width="480" height="250">](http://bl.ocks.org/mbostock/3734321)
 
-See also [*conic*.parallels](#conic_parallels).
+The conic conformal projection. See also [*conic*.parallels](#conic_parallels).
 
 <a href="#geoConicEqualArea" name="geoConicEqualArea">#</a> d3.<b>geoConicEqualArea</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/conicEqualArea.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/conicEqualArea.png" width="480" height="250">](http://bl.ocks.org/mbostock/3734308)
 
-See also [*conic*.parallels](#conic_parallels).
+The Albers’ equal-area conic projection. See also [*conic*.parallels](#conic_parallels).
 
 <a href="#geoConicEquidistant" name="geoConicEquidistant">#</a> d3.<b>geoConicEquidistant</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/conicEquidistant.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/conicEquidistant.png" width="480" height="250">](http://bl.ocks.org/mbostock/3734317)
 
-See also [*conic*.parallels](#conic_parallels).
+The conic equidistant projection. See also [*conic*.parallels](#conic_parallels).
 
 <a href="#geoEquirectangular" name="geoEquirectangular">#</a> d3.<b>geoEquirectangular</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/equirectangular.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/equirectangular.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757119)
 
+The equirectangular (plate carrée) projection.
+
 <a href="#geoGnomonic" name="geoGnomonic">#</a> d3.<b>geoGnomonic</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/gnomonic.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/gnomonic.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757349)
 
+The gnomonic projection.
+
 <a href="#geoMercator" name="geoMercator">#</a> d3.<b>geoMercator</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/mercator.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/mercator.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757132)
 
-Defines a default [*projection*.clipExtent](#projection_clipExtent) such that the world is projected to a square, clipped to approximately ±85° latitude.
+The spherical Mercator projection. Defines a default [*projection*.clipExtent](#projection_clipExtent) such that the world is projected to a square, clipped to approximately ±85° latitude.
 
 <a href="#geoOrthographic" name="geoOrthographic">#</a> d3.<b>geoOrthographic</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/orthographic.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/orthographic.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757125)
 
+The orthographic projection.
+
 <a href="#geoStereographic" name="geoStereographic">#</a> d3.<b>geoStereographic</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/stereographic.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/stereographic.png" width="480" height="250">](http://bl.ocks.org/mbostock/3757137)
 
+The stereographic projection.
+
 <a href="#geoTransverseMercator" name="geoTransverseMercator">#</a> d3.<b>geoTransverseMercator</b>()
 
-<img src="https://raw.githubusercontent.com/d3/d3-geo/master/test/images/transverseMercator.png" width="480" height="250">
+[<img src="https://raw.githubusercontent.com/d3/d3-geo/master/img/transverseMercator.png" width="480" height="250">](http://bl.ocks.org/mbostock/5126418)
 
-Defines a default [*projection*.clipExtent](#projection_clipExtent) such that the world is projected to a square, clipped to approximately ±85° latitude.
+The transverse spherical Mercator projection. Defines a default [*projection*.clipExtent](#projection_clipExtent) such that the world is projected to a square, clipped to approximately ±85° latitude.
 
@@ -414,6 +424,66 @@ <a href="#conic_parallels" name="conic_parallels">#</a> <i>conic</i>.<b>parallels</b>([<i>parallels</i>])
 
-### Streams
+<a href="#geoClipExtent" name="geoClipExtent">#</a> d3.<b>geoClipExtent</b>()
 
-Yadda yadda some introduction about how D3 transforms geometry using sequences of function calls to minimize the overhead of intermediate representations…
+…
 
+<a href="#extent_extent" name="extent_extent">#</a> <i>extent</i>.<b>extent</b>([<i>extent</i>])
+
+…
+
+<a href="#extent_stream" name="extent_stream">#</a> <i>extent</i>.<b>stream</b>(<i>stream</i>)
+
+… See [*projection*.stream](#projection_stream).
+
+#### Raw Projections
+
+Raw projections are used internally by the above projections. These projections are defined as simple point transformations: they take a spherical coordinate [*lambda*, *phi*] expressed in radians, and return a point [*x*, *y*], typically in the unit square centered around the origin. These functions are typically not used directly, but can be useful for deriving related custom projections when used in conjunction with [d3.geoProjection](#geoProjection) or [d3.geoProjectionMutator](#geoProjectionMutator).
+
+<a href="#geoAzimuthalEqualAreaRaw" name="geoAzimuthalEqualAreaRaw">#</a> d3.<b>geoAzimuthalEqualAreaRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoAzimuthalEquidistantRaw" name="geoAzimuthalEquidistantRaw">#</a> d3.<b>geoAzimuthalEquidistantRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoConicConformalRaw" name="geoConicConformalRaw">#</a> d3.<b>geoConicConformalRaw</b>(<i>phi0</i>, <i>phi1</i>)
+
+…
+
+<a href="#geoConicEqualAreaRaw" name="geoConicEqualAreaRaw">#</a> d3.<b>geoConicEqualAreaRaw</b>(<i>phi0</i>, <i>phi1</i>)
+
+…
+
+<a href="#geoConicEquidistantRaw" name="geoConicEquidistantRaw">#</a> d3.<b>geoConicEquidistantRaw</b>(<i>phi0</i>, <i>phi1</i>)
+
+…
+
+<a href="#geoEquirectangularRaw" name="geoEquirectangularRaw">#</a> d3.<b>geoEquirectangularRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoGnomonicRaw" name="geoGnomonicRaw">#</a> d3.<b>geoGnomonicRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoMercatorRaw" name="geoMercatorRaw">#</a> d3.<b>geoMercatorRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoOrthographicRaw" name="geoOrthographicRaw">#</a> d3.<b>geoOrthographicRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoStereographicRaw" name="geoStereographicRaw">#</a> d3.<b>geoStereographicRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+<a href="#geoTransverseMercatorRaw" name="geoTransverseMercatorRaw">#</a> d3.<b>geoTransverseMercatorRaw</b>(<i>lambda</i>, <i>phi</i>)
+
+…
+
+#### Projection Streams
+
+Yadda yadda some introduction about how D3 transforms geometry using sequences of function calls to minimize the overhead of intermediate representations… Despite the name “stream”, these method calls are currently synchronous.
+
 Streams must implement several methods to receive input geometry. Streams are inherently stateful; the meaning of a [point](#point) depends on whether the point is inside of a [line](#lineStart), and likewise a line is distinguished from a ring by a [polygon](#polygonStart).
@@ -467,6 +537,2 @@
 
-<a href="#geoStream" name="geoStream">#</a> d3.<b>geoStream</b>(<i>object</i>, <i>stream</i>)
-
-Streams the specified [GeoJSON](http://geojson.org) *object* to the specified *stream*. (Despite the name “stream”, these method calls are currently synchronous.) While both features and geometry objects are supported as input, the stream interface only describes the geometry, and thus additional feature properties are not visible to streams.
-
 <a href="#geoTransform" name="geoTransform">#</a> d3.<b>geoTransform</b>(<i>prototype</i>)
@@ -495,1 +561,5 @@
 ```
+
+<a href="#geoStream" name="geoStream">#</a> d3.<b>geoStream</b>(<i>object</i>, <i>stream</i>)
+
+Streams the specified [GeoJSON](http://geojson.org) *object* to the specified [projection *stream*](#projection-streams). While both features and geometry objects are supported as input, the stream interface only describes the geometry, and thus additional feature properties are not visible to streams.

src/projection/azimuthal.js

 import {asin, atan2, cos, sin, sqrt} from "../math";
 
-export function azimuthal(scale) {
+export function azimuthalRaw(scale) {
   return function(x, y) {
@@ -5,0 +5,0 @@ var cx = cos(x),

src/projection/azimuthalEqualArea.js

 import {asin, sqrt} from "../math";
-import {azimuthal, azimuthalInvert} from "./azimuthal";
+import {azimuthalRaw, azimuthalInvert} from "./azimuthal";
 import projection from "./index";
 
-var azimuthalEqualArea = azimuthal(function(cxcy) {
+export var azimuthalEqualAreaRaw = azimuthalRaw(function(cxcy) {
   return sqrt(2 / (1 + cxcy));
 });
 
-azimuthalEqualArea.invert = azimuthalInvert(function(z) {
+azimuthalEqualAreaRaw.invert = azimuthalInvert(function(z) {
   return 2 * asin(z / 2);
@@ -14,5 +14,5 @@ });
 export default function() {
-  return projection(azimuthalEqualArea)
+  return projection(azimuthalEqualAreaRaw)
       .scale(120)
       .clipAngle(180 - 1e-3);
 }

src/projection/azimuthalEquidistant.js

 import {acos, sin, tau} from "../math";
-import {azimuthal, azimuthalInvert} from "./azimuthal";
+import {azimuthalRaw, azimuthalInvert} from "./azimuthal";
 import projection from "./index";
 
-var azimuthalEquidistant = azimuthal(function(c) {
+export var azimuthalEquidistantRaw = azimuthalRaw(function(c) {
   return (c = acos(c)) && c / sin(c);
 });
 
-azimuthalEquidistant.invert = azimuthalInvert(function(z) {
+azimuthalEquidistantRaw.invert = azimuthalInvert(function(z) {
   return z;
@@ -14,5 +14,5 @@ });
 export default function() {
-  return projection(azimuthalEquidistant)
+  return projection(azimuthalEquidistantRaw)
       .scale(480 / tau)
       .clipAngle(180 - 1e-3);
 }

src/projection/conicConformal.js

 import {atan, atan2, cos, epsilon, halfPi, log, pow, sign, sin, sqrt, tan} from "../math";
 import {conicProjection} from "./conic";
-import {mercator} from "./mercator";
+import {mercatorRaw} from "./mercator";
 
@@ -9,3 +9,3 @@ function tany(y) {
 
-function conicConformal(y0, y1) {
+export function conicConformalRaw(y0, y1) {
   var cy0 = cos(y0),
@@ -15,3 +15,3 @@ n = y0 === y1 ? sin(y0) : log(cy0 / cos(y1)) / log(tany(y1) / tany(y0)),
 
-  if (!n) return mercator;
+  if (!n) return mercatorRaw;
 
@@ -34,3 +34,3 @@ function project(x, y) {
 export default function() {
-  return conicProjection(conicConformal);
+  return conicProjection(conicConformalRaw);
 }

src/projection/conicEqualArea.js

 import {asin, atan2, cos, sin, sqrt} from "../math";
 import {conicProjection} from "./conic";
 
-function conicEqualArea(y0, y1) {
+export function conicEqualAreaRaw(y0, y1) {
   var sy0 = sin(y0),
@@ -24,5 +24,5 @@ n = (sy0 + sin(y1)) / 2,
 export default function() {
-  return conicProjection(conicEqualArea)
+  return conicProjection(conicEqualAreaRaw)
       .scale(151)
       .translate([480, 347]);
 }

src/projection/conicEquidistant.js

 import {abs, atan2, cos, epsilon, sign, sin, sqrt} from "../math";
 import {conicProjection} from "./conic";
-import {equirectangular} from "./equirectangular";
+import {equirectangularRaw} from "./equirectangular";
 
-function conicEquidistant(y0, y1) {
+export function conicEquidistantRaw(y0, y1) {
   var cy0 = cos(y0),
@@ -10,3 +10,3 @@ n = y0 === y1 ? sin(y0) : (cy0 - cos(y1)) / (y1 - y0),
 
-  if (abs(n) < epsilon) return equirectangular;
+  if (abs(n) < epsilon) return equirectangularRaw;
 
@@ -27,5 +27,5 @@ function project(x, y) {
 export default function() {
-  return conicProjection(conicEquidistant)
+  return conicProjection(conicEquidistantRaw)
       .scale(128)
       .translate([480, 280]);
 }

src/projection/equirectangular.js

 import {pi} from "../math";
 import projection from "./index";
 
-export function equirectangular(lambda, phi) {
+export function equirectangularRaw(lambda, phi) {
   return [lambda, phi];
 }
 
-equirectangular.invert = equirectangular;
+equirectangularRaw.invert = equirectangularRaw;
 
 export default function() {
-  return projection(equirectangular).scale(480 / pi);
+  return projection(equirectangularRaw).scale(480 / pi);
 }

src/projection/gnomonic.js

@@ -5,3 +5,3 @@ import {atan, cos, sin} from "../math";
 
-function gnomonic(x, y) {
+export function gnomonicRaw(x, y) {
   var cy = cos(y), k = cos(x) * cy;
@@ -11,8 +11,8 @@ return [cy * sin(x) / k, sin(y) / k];
 
-gnomonic.invert = azimuthalInvert(atan);
+gnomonicRaw.invert = azimuthalInvert(atan);
 
 export default function() {
-  return projection(gnomonic)
+  return projection(gnomonicRaw)
       .scale(139)
       .clipAngle(60);
 }

src/projection/mercator.js

 import projection from "./index";
 import {atan, exp, halfPi, log, pi, tan, tau} from "../math";
 
-export function mercator(lambda, phi) {
+export function mercatorRaw(lambda, phi) {
   return [lambda, log(tan((halfPi + phi) / 2))];
 }
 
-mercator.invert = function(x, y) {
+mercatorRaw.invert = function(x, y) {
   return [x, 2 * atan(exp(y)) - halfPi];
@@ -13,3 +13,3 @@ };
 export default function() {
-  return mercatorProjection(mercator);
+  return mercatorProjection(mercatorRaw);
 }
@@ -16,0 +16,0 @@

src/projection/orthographic.js

@@ -5,12 +5,12 @@ import {asin, cos, epsilon, sin} from "../math";
 
-function orthographic(x, y) {
+export function orthographicRaw(x, y) {
   return [cos(y) * sin(x), sin(y)];
 }
 
-orthographic.invert = azimuthalInvert(asin);
+orthographicRaw.invert = azimuthalInvert(asin);
 
 export default function() {
-  return projection(orthographic)
+  return projection(orthographicRaw)
       .scale(240)
       .clipAngle(90 + epsilon);
 }

src/projection/stereographic.js

@@ -5,3 +5,3 @@ import {atan, cos, sin} from "../math";
 
-function stereographic(x, y) {
+export function stereographicRaw(x, y) {
   var cy = cos(y), k = 1 + cos(x) * cy;
@@ -11,3 +11,3 @@ return [cy * sin(x) / k, sin(y) / k];
 
-stereographic.invert = azimuthalInvert(function(z) {
+stereographicRaw.invert = azimuthalInvert(function(z) {
   return 2 + atan(z);
@@ -17,5 +17,5 @@ });
 export default function() {
-  return projection(stereographic)
+  return projection(stereographicRaw)
       .scale(240)
       .clipAngle(142);
 }

src/projection/transverseMercator.js

 import {atan, exp, halfPi, log, tan} from "../math";
 import {mercatorProjection} from "./mercator";
 
-function transverseMercator(lambda, phi) {
+export function transverseMercatorRaw(lambda, phi) {
   return [log(tan((halfPi + phi) / 2)), -lambda];
 }
 
-transverseMercator.invert = function(x, y) {
+transverseMercatorRaw.invert = function(x, y) {
   return [-y, 2 * atan(exp(x)) - halfPi];
@@ -13,3 +13,3 @@ };
 export default function() {
-  var m = mercatorProjection(transverseMercator),
+  var m = mercatorProjection(transverseMercatorRaw),
       center = m.center,
@@ -16,0 +16,0 @@ rotate = m.rotate;

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