添加项目文件。

Epost.TestToolsWeb/Content/code/es-modules/mixins/centered-series.js

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+/* *
+ * (c) 2010-2018 Torstein Honsi
+ *
+ * License: www.highcharts.com/license
+ */
+
+/**
+ * @private
+ * @typedef Highcharts.RadianAngles
+ *
+ * @property {number} start
+ *
+ * @property {number} end
+ */
+
+'use strict';
+
+import H from '../parts/Globals.js';
+import '../parts/Utilities.js';
+
+var deg2rad = H.deg2rad,
+    isNumber = H.isNumber,
+    pick = H.pick,
+    relativeLength = H.relativeLength;
+
+/**
+ * @private
+ * @mixin Highcharts.CenteredSeriesMixin
+ */
+H.CenteredSeriesMixin = {
+
+    /**
+     * Get the center of the pie based on the size and center options relative
+     * to the plot area. Borrowed by the polar and gauge series types.
+     *
+     * @private
+     * @function Highcharts.CenteredSeriesMixin.getCenter
+     *
+     * @return {Array<number>}
+     */
+    getCenter: function () {
+
+        var options = this.options,
+            chart = this.chart,
+            slicingRoom = 2 * (options.slicedOffset || 0),
+            handleSlicingRoom,
+            plotWidth = chart.plotWidth - 2 * slicingRoom,
+            plotHeight = chart.plotHeight - 2 * slicingRoom,
+            centerOption = options.center,
+            positions = [
+                pick(centerOption[0], '50%'),
+                pick(centerOption[1], '50%'),
+                options.size || '100%',
+                options.innerSize || 0
+            ],
+            smallestSize = Math.min(plotWidth, plotHeight),
+            i,
+            value;
+
+        for (i = 0; i < 4; ++i) {
+            value = positions[i];
+            handleSlicingRoom = i < 2 || (i === 2 && /%$/.test(value));
+
+            // i == 0: centerX, relative to width
+            // i == 1: centerY, relative to height
+            // i == 2: size, relative to smallestSize
+            // i == 3: innerSize, relative to size
+            positions[i] = relativeLength(
+                value,
+                [plotWidth, plotHeight, smallestSize, positions[2]][i]
+            ) + (handleSlicingRoom ? slicingRoom : 0);
+
+        }
+        // innerSize cannot be larger than size (#3632)
+        if (positions[3] > positions[2]) {
+            positions[3] = positions[2];
+        }
+        return positions;
+    },
+
+    /**
+     * getStartAndEndRadians - Calculates start and end angles in radians.
+     * Used in series types such as pie and sunburst.
+     *
+     * @private
+     * @function Highcharts.CenteredSeriesMixin.getStartAndEndRadians
+     *
+     * @param {number} start
+     *        Start angle in degrees.
+     *
+     * @param {number} end
+     *        Start angle in degrees.
+     *
+     * @return {Highcharts.RadianAngles}
+     *         Returns an object containing start and end angles as radians.
+     */
+    getStartAndEndRadians: function getStartAndEndRadians(start, end) {
+        var startAngle = isNumber(start) ? start : 0, // must be a number
+            endAngle = (
+                (
+                    isNumber(end) && // must be a number
+                    end > startAngle && // must be larger than the start angle
+                    // difference must be less than 360 degrees
+                    (end - startAngle) < 360
+                ) ?
+                end :
+                startAngle + 360
+            ),
+            correction = -90;
+        return {
+            start: deg2rad * (startAngle + correction),
+            end: deg2rad * (endAngle + correction)
+        };
+    }
+};