diff --git a/d3.js b/d3.js
index 4ad64ea9..660c5db7 100644
--- a/d3.js
+++ b/d3.js
@@ -5671,17 +5671,13 @@
     d3_geo_centroid.point = d3_geo_centroidPoint;
   }
   d3.geo.circle = function() {
-    var origin = [ 0, 0 ], angle, precision = 6, rotate, interpolate;
+    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
     function circle() {
-      var o = typeof origin === "function" ? origin.apply(this, arguments) : origin;
-      rotate = d3_geo_rotation(-o[0] * d3_radians, -o[1] * d3_radians, 0);
-      var ring = [];
+      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(center[0] * d3_radians, center[1] * d3_radians, 0), ring = [];
       interpolate(null, null, 1, {
-        point: function(λ, φ) {
-          var point = rotate.invert(λ, φ);
-          point[0] *= d3_degrees;
-          point[1] *= d3_degrees;
-          ring.push(point);
+        point: function(x, y) {
+          ring.push(x = rotate(x, y));
+          x[0] *= d3_degrees, x[1] *= d3_degrees;
         }
       });
       return {
@@ -6522,13 +6518,13 @@
       x = project(x, y);
       return [ x[0] * k + δx, δy - x[1] * k ];
     }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, clip = d3_geo_clipAntimeridian, clipAngle = null;
-    function projection(coordinates) {
-      coordinates = projectRotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
-      return [ coordinates[0] * k + δx, δy - coordinates[1] * k ];
+    function projection(point) {
+      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
+      return [ point[0] * k + δx, δy - point[1] * k ];
     }
-    function invert(coordinates) {
-      coordinates = projectRotate.invert((coordinates[0] - δx) / k, (δy - coordinates[1]) / k);
-      return [ coordinates[0] * d3_degrees, coordinates[1] * d3_degrees ];
+    function invert(point) {
+      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
+      return [ point[0] * d3_degrees, point[1] * d3_degrees ];
     }
     projection.stream = function(stream) {
       return d3_geo_projectionRadiansRotate(rotate, clip(projectResample(stream)));
diff --git a/d3.min.js b/d3.min.js
index eca796d6..07695efe 100644
--- a/d3.min.js
+++ b/d3.min.js
@@ -1,4 +1,4 @@
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u=t[r],a=n[0],o=n[1],c=u[0],l=u[1],s=a[0],f=a[1],h=o[0],d=o[1],g=Math.abs(h-s),p=d-f;if(Ou>Math.abs(p)){var m=f>l?-e:e;n.push([-e,m],[e,m])}else if(Ou>g){var v=s>c?-e:e;n.push([v,-e],[v,e])}else{var m=(s-c)*(d-f)>(h-s)*(f-l)?e:-e,y=Math.abs(p)-g;Ou>Math.abs(y)?n.push([0>p?m:-m,m]):(y>0&&(m*=-1),n.push([-e,m],[e,m]))}}}),n};var Eo={l:"r",r:"l"};d3.geom.delaunay=function(t){var n=t.map(function(){return[]}),e=[];return Gi(t,function(e){n[e.region.l.index].push(t[e.region.r.index])}),n.forEach(function(n,r){var i=t[r],u=i[0],a=i[1];n.forEach(function(t){t.angle=Math.atan2(t[0]-u,t[1]-a)}),n.sort(function(t,n){return t.angle-n.angle});for(var o=0,c=n.length-1;c>o;o++)e.push([i,n[o],n[o+1]])}),e},d3.geom.quadtree=function(t,n,e,r,i){function u(t,n,e,r,i,u){if(!isNaN(n.x)&&!isNaN(n.y))if(t.leaf){var o=t.point;o?.01>Math.abs(o.x-n.x)+Math.abs(o.y-n.y)?a(t,n,e,r,i,u):(t.point=null,a(t,o,e,r,i,u),a(t,n,e,r,i,u)):t.point=n}else a(t,n,e,r,i,u)}function a(t,n,e,r,i,a){var o=.5*(e+i),c=.5*(r+a),l=n.x>=o,s=n.y>=c,f=(s<<1)+l;t.leaf=!1,t=t.nodes[f]||(t.nodes[f]=Ki()),l?e=o:i=o,s?r=c:a=c,u(t,n,e,r,i,a)}var o,c=-1,l=t.length;if(5>arguments.length)if(3===arguments.length)i=e,r=n,e=n=0;else for(n=e=1/0,r=i=-1/0;l>++c;)o=t[c],n>o.x&&(n=o.x),e>o.y&&(e=o.y),o.x>r&&(r=o.x),o.y>i&&(i=o.y);var s=r-n,f=i-e;s>f?i=e+s:r=n+f;var h=Ki();return h.add=function(t){u(h,t,n,e,r,i)},h.visit=function(t){Wi(t,h,n,e,r,i)},t.forEach(h.add),h},d3.time={};var Ao=Date,No=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"];Qi.prototype={getDate:function(){return this._.getUTCDate()},getDay:function(){return this._.getUTCDay()},getFullYear:function(){return this._.getUTCFullYear()},getHours:function(){return this._.getUTCHours()},getMilliseconds:function(){return this._.getUTCMilliseconds()},getMinutes:function(){return this._.getUTCMinutes()},getMonth:function(){return this._.getUTCMonth()},getSeconds:function(){return this._.getUTCSeconds()},getTime:function(){return this._.getTime()},getTimezoneOffset:function(){return 0},valueOf:function(){return this._.valueOf()},setDate:function(){To.setUTCDate.apply(this._,arguments)},setDay:function(){To.setUTCDay.apply(this._,arguments)},setFullYear:function(){To.setUTCFullYear.apply(this._,arguments)},setHours:function(){To.setUTCHours.apply(this._,arguments)},setMilliseconds:function(){To.setUTCMilliseconds.apply(this._,arguments)},setMinutes:function(){To.setUTCMinutes.apply(this._,arguments)},setMonth:function(){To.setUTCMonth.apply(this._,arguments)},setSeconds:function(){To.setUTCSeconds.apply(this._,arguments)},setTime:function(){To.setTime.apply(this._,arguments)}};var To=Date.prototype,qo="%a %b %e %X %Y",Co="%m/%d/%Y",zo="%H:%M:%S",Do=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],Lo=["Sun","Mon","Tue","Wed","Thu","Fri","Sat"],Fo=["January","February","March","April","May","June","July","August","September","October","November","December"],Ho=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];d3.time.format=function(t){function n(n){for(var r,i,u,a=[],o=-1,c=0;e>++o;)37===t.charCodeAt(o)&&(a.push(t.substring(c,o)),null!=(i=Io[r=t.charAt(++o)])&&(r=t.charAt(++o)),(u=Vo[r])&&(r=u(n,null==i?"e"===r?" ":"0":i)),a.push(r),c=o+1);return a.push(t.substring(c,o)),a.join("")}var e=t.length;return n.parse=function(n){var e={y:1900,m:0,d:1,H:0,M:0,S:0,L:0},r=tu(e,t,n,0);if(r!=n.length)return null;"p"in e&&(e.H=e.H%12+12*e.p);var i=new Ao;return i.setFullYear(e.y,e.m,e.d),i.setHours(e.H,e.M,e.S,e.L),i},n.toString=function(){return t},n};var Ro=nu(Do),Po=nu(Lo),jo=nu(Fo),Oo=eu(Fo),Yo=nu(Ho),Uo=eu(Ho),Io={"-":"",_:" ",0:"0"},Vo={a:function(t){return Lo[t.getDay()]},A:function(t){return Do[t.getDay()]},b:function(t){return Ho[t.getMonth()]},B:function(t){return Fo[t.getMonth()]},c:d3.time.format(qo),d:function(t,n){return ru(t.getDate(),n,2)},e:function(t,n){return ru(t.getDate(),n,2)},H:function(t,n){return ru(t.getHours(),n,2)},I:function(t,n){return ru(t.getHours()%12||12,n,2)},j:function(t,n){return ru(1+d3.time.dayOfYear(t),n,3)},L:function(t,n){return ru(t.getMilliseconds(),n,3)},m:function(t,n){return ru(t.getMonth()+1,n,2)},M:function(t,n){return ru(t.getMinutes(),n,2)},p:function(t){return t.getHours()>=12?"PM":"AM"},S:function(t,n){return ru(t.getSeconds(),n,2)},U:function(t,n){return ru(d3.time.sundayOfYear(t),n,2)},w:function(t){return t.getDay()},W:function(t,n){return ru(d3.time.mondayOfYear(t),n,2)},x:d3.time.format(Co),X:d3.time.format(zo),y:function(t,n){return ru(t.getFullYear()%100,n,2)},Y:function(t,n){return ru(t.getFullYear()%1e4,n,4)},Z:xu,"%":function(){return"%"}},Xo={a:iu,A:uu,b:au,B:ou,c:cu,d:pu,e:pu,H:mu,I:mu,L:Mu,m:gu,M:vu,p:bu,S:yu,x:lu,X:su,y:hu,Y:fu},Zo=/^\s*\d+/,Bo=d3.map({am:0,pm:1});d3.time.format.utc=function(t){function n(t){try{Ao=Qi;var n=new Ao;return n._=t,e(n)}finally{Ao=Date}}var e=d3.time.format(t);return n.parse=function(t){try{Ao=Qi;var n=e.parse(t);return n&&n._}finally{Ao=Date}},n.toString=e.toString,n};var $o=d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");d3.time.format.iso=Date.prototype.toISOString?_u:$o,_u.parse=function(t){var n=new Date(t);return isNaN(n)?null:n},_u.toString=$o.toString,d3.time.second=wu(function(t){return new Ao(1e3*Math.floor(t/1e3))},function(t,n){t.setTime(t.getTime()+1e3*Math.floor(n))},function(t){return t.getSeconds()}),d3.time.seconds=d3.time.second.range,d3.time.seconds.utc=d3.time.second.utc.range,d3.time.minute=wu(function(t){return new Ao(6e4*Math.floor(t/6e4))},function(t,n){t.setTime(t.getTime()+6e4*Math.floor(n))},function(t){return t.getMinutes()}),d3.time.minutes=d3.time.minute.range,d3.time.minutes.utc=d3.time.minute.utc.range,d3.time.hour=wu(function(t){var n=t.getTimezoneOffset()/60;return new Ao(36e5*(Math.floor(t/36e5-n)+n))},function(t,n){t.setTime(t.getTime()+36e5*Math.floor(n))},function(t){return t.getHours()}),d3.time.hours=d3.time.hour.range,d3.time.hours.utc=d3.time.hour.utc.range,d3.time.day=wu(function(t){var n=new Ao(1970,0);return n.setFullYear(t.getFullYear(),t.getMonth(),t.getDate()),n},function(t,n){t.setDate(t.getDate()+n)},function(t){return t.getDate()-1}),d3.time.days=d3.time.day.range,d3.time.days.utc=d3.time.day.utc.range,d3.time.dayOfYear=function(t){var n=d3.time.year(t);return Math.floor((t-n-6e4*(t.getTimezoneOffset()-n.getTimezoneOffset()))/864e5)},No.forEach(function(t,n){t=t.toLowerCase(),n=7-n;var e=d3.time[t]=wu(function(t){return(t=d3.time.day(t)).setDate(t.getDate()-(t.getDay()+n)%7),t},function(t,n){t.setDate(t.getDate()+7*Math.floor(n))},function(t){var e=d3.time.year(t).getDay();return Math.floor((d3.time.dayOfYear(t)+(e+n)%7)/7)-(e!==n)});d3.time[t+"s"]=e.range,d3.time[t+"s"].utc=e.utc.range,d3.time[t+"OfYear"]=function(t){var e=d3.time.year(t).getDay();return Math.floor((d3.time.dayOfYear(t)+(e+n)%7)/7)}}),d3.time.week=d3.time.sunday,d3.time.weeks=d3.time.sunday.range,d3.time.weeks.utc=d3.time.sunday.utc.range,d3.time.weekOfYear=d3.time.sundayOfYear,d3.time.month=wu(function(t){return t=d3.time.day(t),t.setDate(1),t},function(t,n){t.setMonth(t.getMonth()+n)},function(t){return t.getMonth()}),d3.time.months=d3.time.month.range,d3.time.months.utc=d3.time.month.utc.range,d3.time.year=wu(function(t){return t=d3.time.day(t),t.setMonth(0,1),t},function(t,n){t.setFullYear(t.getFullYear()+n)},function(t){return t.getFullYear()}),d3.time.years=d3.time.year.range,d3.time.years.utc=d3.time.year.utc.range;var Jo=[1e3,5e3,15e3,3e4,6e4,3e5,9e5,18e5,36e5,108e5,216e5,432e5,864e5,1728e5,6048e5,2592e6,7776e6,31536e6],Go=[[d3.time.second,1],[d3.time.second,5],[d3.time.second,15],[d3.time.second,30],[d3.time.minute,1],[d3.time.minute,5],[d3.time.minute,15],[d3.time.minute,30],[d3.time.hour,1],[d3.time.hour,3],[d3.time.hour,6],[d3.time.hour,12],[d3.time.day,1],[d3.time.day,2],[d3.time.week,1],[d3.time.month,1],[d3.time.month,3],[d3.time.year,1]],Ko=[[d3.time.format("%Y"),o],[d3.time.format("%B"),function(t){return t.getMonth()}],[d3.time.format("%b %d"),function(t){return 1!=t.getDate()}],[d3.time.format("%a %d"),function(t){return t.getDay()&&1!=t.getDate()}],[d3.time.format("%I %p"),function(t){return t.getHours()}],[d3.time.format("%I:%M"),function(t){return t.getMinutes()}],[d3.time.format(":%S"),function(t){return t.getSeconds()}],[d3.time.format(".%L"),function(t){return t.getMilliseconds()}]],Wo=d3.scale.linear(),Qo=Nu(Ko);Go.year=function(t,n){return Wo.domain(t.map(qu)).ticks(n).map(Tu)},d3.time.scale=function(){return ku(d3.scale.linear(),Go,Qo)};var tc=Go.map(function(t){return[t[0].utc,t[1]]}),nc=[[d3.time.format.utc("%Y"),o],[d3.time.format.utc("%B"),function(t){return t.getUTCMonth()}],[d3.time.format.utc("%b %d"),function(t){return 1!=t.getUTCDate()}],[d3.time.format.utc("%a %d"),function(t){return t.getUTCDay()&&1!=t.getUTCDate()}],[d3.time.format.utc("%I %p"),function(t){return t.getUTCHours()}],[d3.time.format.utc("%I:%M"),function(t){return t.getUTCMinutes()}],[d3.time.format.utc(":%S"),function(t){return t.getUTCSeconds()}],[d3.time.format.utc(".%L"),function(t){return t.getUTCMilliseconds()}]],ec=Nu(nc);tc.year=function(t,n){return Wo.domain(t.map(zu)).ticks(n).map(Cu)},d3.time.scale.utc=function(){return ku(d3.scale.linear(),tc,ec)}})();
\ No newline at end of file
diff --git a/src/geo/circle.js b/src/geo/circle.js
index 123d425c..5088f153 100644
--- a/src/geo/circle.js
+++ b/src/geo/circle.js
@@ -2,23 +2,21 @@ d3.geo.circle = function() {
   var origin = [0, 0],
       angle,
       precision = 6,
-      rotate,
       interpolate;
 
   function circle() {
-    var o = typeof origin === "function" ? origin.apply(this, arguments) : origin;
-    rotate = d3_geo_rotation(-o[0] * d3_radians, -o[1] * d3_radians, 0);
-    var ring = [];
-    interpolate(null, null, 1, {point: function(λ, φ) {
-      var point = rotate.invert(λ, φ);
-      point[0] *= d3_degrees;
-      point[1] *= d3_degrees;
-      ring.push(point);
-    }});
-    return {
-      type: "Polygon",
-      coordinates: [ring]
-    };
+    var center = typeof origin === "function" ? origin.apply(this, arguments) : origin,
+        rotate = d3_geo_rotation(center[0] * d3_radians, center[1] * d3_radians, 0),
+        ring = [];
+
+    interpolate(null, null, 1, {
+      point: function(x, y) {
+        ring.push(x = rotate(x, y));
+        x[0] *= d3_degrees, x[1] *= d3_degrees;
+      }
+    });
+
+    return {type: "Polygon", coordinates: [ring]};
   }
 
   circle.origin = function(x) {
diff --git a/src/geo/projection.js b/src/geo/projection.js
index 33a0a34d..213996a3 100644
--- a/src/geo/projection.js
+++ b/src/geo/projection.js
@@ -11,26 +11,21 @@ function d3_geo_projectionMutator(projectAt) {
       projectRotate,
       projectResample = d3_geo_resample(function(x, y) { x = project(x, y); return [x[0] * k + δx, δy - x[1] * k]; }),
       k = 150, // scale
-      x = 480, // translate
-      y = 250,
-      λ = 0, // center
-      φ = 0,
-      δλ = 0, // rotate
-      δφ = 0,
-      δγ = 0,
-      δx, // center
-      δy,
+      x = 480, y = 250, // translate
+      λ = 0, φ = 0, // center
+      δλ = 0, δφ = 0, δγ = 0, // rotate
+      δx, δy, // center
       clip = d3_geo_clipAntimeridian,
       clipAngle = null;
 
-  function projection(coordinates) {
-    coordinates = projectRotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
-    return [coordinates[0] * k + δx, δy - coordinates[1] * k];
+  function projection(point) {
+    point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
+    return [point[0] * k + δx, δy - point[1] * k];
   }
 
-  function invert(coordinates) {
-    coordinates = projectRotate.invert((coordinates[0] - δx) / k, (δy - coordinates[1]) / k);
-    return [coordinates[0] * d3_degrees, coordinates[1] * d3_degrees];
+  function invert(point) {
+    point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
+    return [point[0] * d3_degrees, point[1] * d3_degrees];
   }
 
   projection.stream = function(stream) {