Remove pie.sort and donut.sort options

c3.js

@@ -1011,7 +1011,6 @@
             pie_label_show: true,
             pie_label_format: undefined,
             pie_label_threshold: 0.05,
-            pie_sort: true,
             pie_expand: true,
             // gauge
             gauge_label_show: true,
@@ -1026,7 +1025,6 @@
             donut_label_format: undefined,
             donut_label_threshold: 0.05,
             donut_width: undefined,
-            donut_sort: true,
             donut_expand: true,
             donut_title: "",
             // region - region to change style
@@ -4153,7 +4151,7 @@
         $$.pie = d3.layout.pie().value(function (d) {
             return d.values.reduce(function (a, b) { return a + b.value; }, 0);
         });
-        if (!config.data_order || !config.pie_sort || !config.donut_sort) {
+        if (!config.data_order) {
             $$.pie.sort(null);
         }
     };
@@ -4177,7 +4175,7 @@
     c3_chart_internal_fn.updateAngle = function (d) {
         var $$ = this, config = $$.config,
             found = false, index = 0;
-        $$.pie($$.filterTargetsToShow($$.data.targets)).sort($$.descByStartAngle).forEach(function (t) {
+        $$.pie($$.filterTargetsToShow($$.data.targets)).forEach(function (t) {
             if (! found && t.data.id === d.data.id) {
                 found = true;
                 d = t;
@@ -4347,10 +4345,6 @@
         return $$.hasType('donut') ? $$.config.donut_title : "";
     };
 
-    c3_chart_internal_fn.descByStartAngle = function (a, b) {
-        return a.startAngle - b.startAngle;
-    };
-
     c3_chart_internal_fn.updateTargetsForArc = function (targets) {
         var $$ = this, main = $$.main,
             mainPieUpdate, mainPieEnter,

src/arc.js

@@ -3,7 +3,7 @@ c3_chart_internal_fn.initPie = function () {
     $$.pie = d3.layout.pie().value(function (d) {
         return d.values.reduce(function (a, b) { return a + b.value; }, 0);
     });
-    if (!config.data_order || !config.pie_sort || !config.donut_sort) {
+    if (!config.data_order) {
         $$.pie.sort(null);
     }
 };
@@ -27,7 +27,7 @@ c3_chart_internal_fn.updateArc = function () {
 c3_chart_internal_fn.updateAngle = function (d) {
     var $$ = this, config = $$.config,
         found = false, index = 0;
-    $$.pie($$.filterTargetsToShow($$.data.targets)).sort($$.descByStartAngle).forEach(function (t) {
+    $$.pie($$.filterTargetsToShow($$.data.targets)).forEach(function (t) {
         if (! found && t.data.id === d.data.id) {
             found = true;
             d = t;
@@ -197,10 +197,6 @@ c3_chart_internal_fn.getArcTitle = function () {
     return $$.hasType('donut') ? $$.config.donut_title : "";
 };
 
-c3_chart_internal_fn.descByStartAngle = function (a, b) {
-    return a.startAngle - b.startAngle;
-};
-
 c3_chart_internal_fn.updateTargetsForArc = function (targets) {
     var $$ = this, main = $$.main,
         mainPieUpdate, mainPieEnter,

src/config.js

@@ -144,7 +144,6 @@ c3_chart_internal_fn.getDefaultConfig = function () {
         pie_label_show: true,
         pie_label_format: undefined,
         pie_label_threshold: 0.05,
-        pie_sort: true,
         pie_expand: true,
         // gauge
         gauge_label_show: true,
@@ -159,7 +158,6 @@ c3_chart_internal_fn.getDefaultConfig = function () {
         donut_label_format: undefined,
         donut_label_threshold: 0.05,
         donut_width: undefined,
-        donut_sort: true,
         donut_expand: true,
         donut_title: "",
         // region - region to change style