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+ <pre class="prettyprint lang-js"><span id='Ext-chart-axis-Radial'>/**
+</span> * @class Ext.chart.axis.Radial
+ * @extends Ext.chart.axis.Abstract
+ * @ignore
+ */
+Ext.define('Ext.chart.axis.Radial', {
+
+ /* Begin Definitions */
+
+ extend: 'Ext.chart.axis.Abstract',
+
+ /* End Definitions */
+
+ position: 'radial',
+
+ alias: 'axis.radial',
+
+ drawAxis: function(init) {
+ var chart = this.chart,
+ surface = chart.surface,
+ bbox = chart.chartBBox,
+ store = chart.store,
+ l = store.getCount(),
+ centerX = bbox.x + (bbox.width / 2),
+ centerY = bbox.y + (bbox.height / 2),
+ rho = Math.min(bbox.width, bbox.height) /2,
+ sprites = [], sprite,
+ steps = this.steps,
+ i, j, pi2 = Math.PI * 2,
+ cos = Math.cos, sin = Math.sin;
+
+ if (this.sprites && !chart.resizing) {
+ this.drawLabel();
+ return;
+ }
+
+ if (!this.sprites) {
+ //draw circles
+ for (i = 1; i <= steps; i++) {
+ sprite = surface.add({
+ type: 'circle',
+ x: centerX,
+ y: centerY,
+ radius: Math.max(rho * i / steps, 0),
+ stroke: '#ccc'
+ });
+ sprite.setAttributes({
+ hidden: false
+ }, true);
+ sprites.push(sprite);
+ }
+ //draw lines
+ store.each(function(rec, i) {
+ sprite = surface.add({
+ type: 'path',
+ path: ['M', centerX, centerY, 'L', centerX + rho * cos(i / l * pi2), centerY + rho * sin(i / l * pi2), 'Z'],
+ stroke: '#ccc'
+ });
+ sprite.setAttributes({
+ hidden: false
+ }, true);
+ sprites.push(sprite);
+ });
+ } else {
+ sprites = this.sprites;
+ //draw circles
+ for (i = 0; i < steps; i++) {
+ sprites[i].setAttributes({
+ x: centerX,
+ y: centerY,
+ radius: Math.max(rho * (i + 1) / steps, 0),
+ stroke: '#ccc'
+ }, true);
+ }
+ //draw lines
+ store.each(function(rec, j) {
+ sprites[i + j].setAttributes({
+ path: ['M', centerX, centerY, 'L', centerX + rho * cos(j / l * pi2), centerY + rho * sin(j / l * pi2), 'Z'],
+ stroke: '#ccc'
+ }, true);
+ });
+ }
+ this.sprites = sprites;
+
+ this.drawLabel();
+ },
+
+ drawLabel: function() {
+ var chart = this.chart,
+ surface = chart.surface,
+ bbox = chart.chartBBox,
+ store = chart.store,
+ centerX = bbox.x + (bbox.width / 2),
+ centerY = bbox.y + (bbox.height / 2),
+ rho = Math.min(bbox.width, bbox.height) /2,
+ max = Math.max, round = Math.round,
+ labelArray = [], label,
+ fields = [], nfields,
+ categories = [], xField,
+ aggregate = !this.maximum,
+ maxValue = this.maximum || 0,
+ steps = this.steps, i = 0, j, dx, dy,
+ pi2 = Math.PI * 2,
+ cos = Math.cos, sin = Math.sin,
+ display = this.label.display,
+ draw = display !== 'none',
+ margin = 10;
+
+ if (!draw) {
+ return;
+ }
+
+ //get all rendered fields
+ chart.series.each(function(series) {
+ fields.push(series.yField);
+ xField = series.xField;
+ });
+
+ //get maxValue to interpolate
+ store.each(function(record, i) {
+ if (aggregate) {
+ for (i = 0, nfields = fields.length; i < nfields; i++) {
+ maxValue = max(+record.get(fields[i]), maxValue);
+ }
+ }
+ categories.push(record.get(xField));
+ });
+ if (!this.labelArray) {
+ if (display != 'categories') {
+ //draw scale
+ for (i = 1; i <= steps; i++) {
+ label = surface.add({
+ type: 'text',
+ text: round(i / steps * maxValue),
+ x: centerX,
+ y: centerY - rho * i / steps,
+ 'text-anchor': 'middle',
+ 'stroke-width': 0.1,
+ stroke: '#333'
+ });
+ label.setAttributes({
+ hidden: false
+ }, true);
+ labelArray.push(label);
+ }
+ }
+ if (display != 'scale') {
+ //draw text
+ for (j = 0, steps = categories.length; j < steps; j++) {
+ dx = cos(j / steps * pi2) * (rho + margin);
+ dy = sin(j / steps * pi2) * (rho + margin);
+ label = surface.add({
+ type: 'text',
+ text: categories[j],
+ x: centerX + dx,
+ y: centerY + dy,
+ 'text-anchor': dx * dx <= 0.001? 'middle' : (dx < 0? 'end' : 'start')
+ });
+ label.setAttributes({
+ hidden: false
+ }, true);
+ labelArray.push(label);
+ }
+ }
+ }
+ else {
+ labelArray = this.labelArray;
+ if (display != 'categories') {
+ //draw values
+ for (i = 0; i < steps; i++) {
+ labelArray[i].setAttributes({
+ text: round((i + 1) / steps * maxValue),
+ x: centerX,
+ y: centerY - rho * (i + 1) / steps,
+ 'text-anchor': 'middle',
+ 'stroke-width': 0.1,
+ stroke: '#333'
+ }, true);
+ }
+ }
+ if (display != 'scale') {
+ //draw text
+ for (j = 0, steps = categories.length; j < steps; j++) {
+ dx = cos(j / steps * pi2) * (rho + margin);
+ dy = sin(j / steps * pi2) * (rho + margin);
+ if (labelArray[i + j]) {
+ labelArray[i + j].setAttributes({
+ type: 'text',
+ text: categories[j],
+ x: centerX + dx,
+ y: centerY + dy,
+ 'text-anchor': dx * dx <= 0.001? 'middle' : (dx < 0? 'end' : 'start')
+ }, true);
+ }
+ }
+ }
+ }
+ this.labelArray = labelArray;
+ }
+});</pre>
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