Refactorings

packages/grafana-ui/src/components/RadialGauge/GradientDef.tsx

@@ -7,15 +7,14 @@ import { GaugeDimensions } from './utils';
 
 interface GradientDefProps {
   fieldDisplay: FieldDisplay;
-  index: number;
+  id: string;
   theme: GrafanaTheme2;
-  gaugeId: string;
   gradient: RadialGradientMode;
   dimensions: GaugeDimensions;
   shape: RadialShape;
 }
 
-export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dimensions, shape }: GradientDefProps) {
+export function GradientDef({ fieldDisplay, id, theme, gradient, dimensions, shape }: GradientDefProps) {
   const colorModeId = fieldDisplay.field.color?.mode;
   const valuePercent = fieldDisplay.display.percent ?? 0;
   const colorMode = getFieldColorMode(colorModeId);
@@ -39,7 +38,7 @@ export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dim
           y1="0"
           x2={x2}
           y2={y2}
-          id={getGradientId(gaugeId, index)}
+          id={id}
           gradientUnits="userSpaceOnUse"
           gradientTransform={transform}
         >
@@ -59,7 +58,7 @@ export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dim
           y1="0"
           x2={x2}
           y2={y2}
-          id={getGradientId(gaugeId, index)}
+          id={id}
           gradientUnits="userSpaceOnUse"
           gradientTransform={transform}
         >
@@ -83,7 +82,7 @@ export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dim
         const count = colors.length;
 
         return (
-          <linearGradient x1="0" y1="1" x2={1 / valuePercent} y2="1" id={getGradientId(gaugeId, index)}>
+          <linearGradient x1="0" y1="1" x2={1 / valuePercent} y2="1" id={id}>
             {colors.map((stopColor, i) => (
               <stop key={i} offset={`${(i / (count - 1)).toFixed(2)}`} stopColor={stopColor} stopOpacity={1} />
             ))}
@@ -91,7 +90,7 @@ export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dim
         );
       } else {
         return (
-          <linearGradient x1="0" y1="1" x2={0} y2="1" id={getGradientId(gaugeId, index)}>
+          <linearGradient x1="0" y1="1" x2={0} y2="1" id={id}>
             <stop stopColor={fieldDisplay.display.color ?? 'gray'} stopOpacity={1} />
           </linearGradient>
         );
@@ -117,7 +116,3 @@ export function GradientDef({ fieldDisplay, index, theme, gaugeId, gradient, dim
 
   return null;
 }
-
-export function getGradientId(gaugeId: string, index: number) {
-  return `radial-gauge-${gaugeId}-${index}`;
-}

packages/grafana-ui/src/components/RadialGauge/RadialBar.tsx

@@ -1,42 +1,38 @@
-import { FieldDisplay, GrafanaTheme2 } from '@grafana/data';
+import { GrafanaTheme2 } from '@grafana/data';
 
 import { useTheme2 } from '../../themes/ThemeContext';
 
-import { GaugeDimensions, getValueAngleForValue } from './utils';
+import { GaugeDimensions } from './utils';
 
 export interface RadialBarProps {
-  gaugeId: string;
   dimensions: GaugeDimensions;
-  fieldDisplay: FieldDisplay;
+  angleRange: number;
+  angle: number;
   startAngle: number;
-  endAngle: number;
   color: string;
   roundedBars?: boolean;
-  spotlight?: boolean;
-  glow?: boolean;
+  spotlightStroke: string;
+  glowFilter?: string;
 }
 export function RadialBar({
   dimensions,
-  fieldDisplay,
-  gaugeId,
+  angleRange,
+  angle,
   startAngle,
-  endAngle,
   color,
   roundedBars,
-  spotlight,
-  glow,
+  spotlightStroke,
+  glowFilter,
 }: RadialBarProps) {
   const theme = useTheme2();
-  const { range, angle } = getValueAngleForValue(fieldDisplay, startAngle, endAngle);
 
   const trackStart = startAngle + angle;
-  const trackLength = range - angle;
+  const trackLength = angleRange - angle;
 
   return (
-    <>
+    <g>
       {/** Track */}
       <RadialArcPath
-        gaugeId={gaugeId}
         angle={trackLength}
         dimensions={dimensions}
         startAngle={trackStart}
@@ -46,41 +42,38 @@ export function RadialBar({
       />
       {/** The colored bar */}
       <RadialArcPath
-        gaugeId={gaugeId}
         angle={angle}
         dimensions={dimensions}
         startAngle={startAngle}
         color={color}
         roundedBars={roundedBars}
-        spotlight={spotlight}
-        glow={glow}
+        spotlightStroke={spotlightStroke}
+        glowFilter={glowFilter}
         theme={theme}
       />
-    </>
+    </g>
   );
 }
 
 export interface RadialArcPathProps {
-  gaugeId: string;
   angle: number;
   startAngle: number;
   dimensions: GaugeDimensions;
   color: string;
   roundedBars?: boolean;
-  spotlight?: boolean;
-  glow?: boolean;
+  spotlightStroke?: string;
+  glowFilter?: string;
   theme: GrafanaTheme2;
 }
 
 export function RadialArcPath({
-  gaugeId,
   startAngle,
   dimensions,
   angle,
   color,
   roundedBars,
-  spotlight,
-  glow,
+  spotlightStroke,
+  glowFilter,
   theme,
 }: RadialArcPathProps) {
   let { radius, centerX, centerY, barWidth } = dimensions;
@@ -114,17 +107,17 @@ export function RadialArcPath({
         strokeLinecap={roundedBars ? 'round' : 'butt'}
         strokeWidth={barWidth}
         strokeDasharray="0"
-        filter={glow ? `url(#glow-${gaugeId})` : undefined}
+        filter={glowFilter}
       />
-      {spotlight && angle > 8 && (
+      {spotlightStroke && angle > 8 && (
         <SpotlightSquareEffect
           radius={radius}
           centerX={centerX}
           centerY={centerY}
           angleRadian={endRadians}
           barWidth={barWidth}
-          glow={glow}
-          gaugeId={gaugeId}
+          glowFilter={glowFilter}
+          spotlightStroke={spotlightStroke}
           theme={theme}
           roundedBars={roundedBars}
         />
@@ -139,8 +132,8 @@ interface SpotlightEffectProps {
   centerY: number;
   angleRadian: number;
   barWidth: number;
-  glow?: boolean;
-  gaugeId: string;
+  glowFilter?: string;
+  spotlightStroke: string;
   theme: GrafanaTheme2;
   roundedBars?: boolean;
 }
@@ -151,8 +144,8 @@ function SpotlightSquareEffect({
   centerY,
   angleRadian,
   barWidth,
-  glow,
-  gaugeId,
+  glowFilter,
+  spotlightStroke,
   roundedBars,
 }: SpotlightEffectProps) {
   let x1 = centerX + radius * Math.cos(angleRadian - 0.2);
@@ -167,9 +160,9 @@ function SpotlightSquareEffect({
       d={path}
       fill="none"
       strokeWidth={barWidth}
-      stroke={`url(#spotlight-${gaugeId})`}
+      stroke={spotlightStroke}
       strokeLinecap={roundedBars ? 'round' : 'butt'}
-      filter={glow ? `url(#glow-${gaugeId})` : undefined}
+      filter={glowFilter}
     />
   );
 }

packages/grafana-ui/src/components/RadialGauge/RadialBarSegmented.tsx

@@ -3,30 +3,27 @@ import { DisplayProcessor, FieldDisplay } from '@grafana/data';
 import { useTheme2 } from '../../themes/ThemeContext';
 
 import { RadialGradientMode } from './RadialGauge';
-import { GaugeDimensions, getValueAngleForValue } from './utils';
+import { GaugeDimensions } from './utils';
 
 export interface RadialBarSegmentedProps {
-  gaugeId: string;
   fieldDisplay: FieldDisplay;
   dimensions: GaugeDimensions;
+  angleRange: number;
   startAngle: number;
-  endAngle: number;
   color: string;
-  spotlight?: boolean;
-  glow?: boolean;
+  glowFilter?: string;
   segmentCount: number;
   segmentSpacing: number;
   displayProcessor: DisplayProcessor;
   gradient: RadialGradientMode;
 }
 export function RadialBarSegmented({
-  gaugeId,
   fieldDisplay,
   dimensions,
   startAngle,
-  endAngle,
+  angleRange,
   color,
-  glow,
+  glowFilter,
   segmentCount,
   segmentSpacing,
   displayProcessor,
@@ -35,8 +32,7 @@ export function RadialBarSegmented({
   const segments: React.ReactNode[] = [];
   const theme = useTheme2();
 
-  const { range } = getValueAngleForValue(fieldDisplay, startAngle, endAngle);
-  const segmentCountAdjusted = getOptimalSegmentCount(dimensions, segmentSpacing, segmentCount, range);
+  const segmentCountAdjusted = getOptimalSegmentCount(dimensions, segmentSpacing, segmentCount, angleRange);
 
   const min = fieldDisplay.field.min ?? 0;
   const max = fieldDisplay.field.max ?? 100;
@@ -54,41 +50,38 @@ export function RadialBarSegmented({
   for (let i = 0; i < segmentCountAdjusted; i++) {
     const angleValue = ((max - min) / segmentCountAdjusted) * i;
     const angleColor = getColorForValue(angleValue);
-    const segmentAngle = startAngle + (range / segmentCountAdjusted) * i + 0.01;
+    const segmentAngle = startAngle + (angleRange / segmentCountAdjusted) * i + 0.01;
     const segmentColor = angleValue > value ? theme.colors.action.hover : angleColor;
 
     segments.push(
       <RadialSegmentArcPath
-        gaugeId={gaugeId}
         angle={segmentAngle}
         dimensions={dimensions}
         color={segmentColor}
-        glow={glow}
+        glowFilter={glowFilter}
         segmentSpacing={segmentSpacing}
-        arcLengthDeg={range / segmentCountAdjusted}
+        arcLengthDeg={angleRange / segmentCountAdjusted}
       />
     );
   }
 
-  return segments;
+  return <g>{segments}</g>;
 }
 
 export interface RadialSegmentProps {
-  gaugeId: string;
   angle: number;
   dimensions: GaugeDimensions;
   color: string;
-  glow?: boolean;
+  glowFilter?: string;
   segmentSpacing: number;
   arcLengthDeg: number;
 }
 
 export function RadialSegmentArcPath({
-  gaugeId,
   angle,
   dimensions,
   color,
-  glow,
+  glowFilter,
   segmentSpacing,
   arcLengthDeg,
 }: RadialSegmentProps) {
@@ -121,7 +114,7 @@ export function RadialSegmentArcPath({
       strokeLinecap={'butt'}
       strokeWidth={barWidth}
       strokeDasharray="0"
-      filter={glow ? `url(#glow-${gaugeId})` : undefined}
+      filter={glowFilter}
     />
   );
 }

packages/grafana-ui/src/components/RadialGauge/RadialGauge.story.tsx

@@ -325,6 +325,10 @@ function RadialBarExample({
 }: ExampleProps) {
   const theme = useTheme2();
 
+  if (gradient === 'scheme' && colorMode === FieldColorModeId.Fixed) {
+    colorMode = FieldColorModeId.ContinuousGrYlRd;
+  }
+
   const frame = toDataFrame({
     name: 'TestData',
     length: 18,
@@ -400,7 +404,7 @@ function getExtraSeries(seriesCount: number, colorMode: FieldColorModeId, theme:
   const fields: Field[] = [];
   const colors = ['blue', 'green', 'purple', 'orange', 'yellow'];
 
-  for (let i = 0; i < seriesCount; i++) {
+  for (let i = 1; i < seriesCount; i++) {
     fields.push({
       name: `Series ${i + 1}`,
       type: FieldType.number,

packages/grafana-ui/src/components/RadialGauge/RadialGauge.tsx

@@ -2,17 +2,17 @@ import { css } from '@emotion/css';
 import { isNumber } from 'lodash';
 import { useId } from 'react';
 
-import { DisplayValue, FieldDisplay, getDisplayProcessor, GrafanaTheme2 } from '@grafana/data';
+import { FieldDisplay, getDisplayProcessor, GrafanaTheme2 } from '@grafana/data';
 
 import { useStyles2, useTheme2 } from '../../themes/ThemeContext';
 
-import { GradientDef, getGradientId } from './GradientDef';
+import { GradientDef } from './GradientDef';
 import { RadialBar } from './RadialBar';
 import { RadialBarSegmented } from './RadialBarSegmented';
 import { RadialSparkline } from './RadialSparkline';
 import { RadialText } from './RadialText';
-import { CenterGlowGradient, GlowGradient, SpotlightGradient } from './effects';
-import { calculateDimensions, GaugeDimensions, getValueAngleForValue } from './utils';
+import { GlowGradient, MiddleCircleGlow, SpotlightGradient } from './effects';
+import { calculateDimensions, getValueAngleForValue } from './utils';
 
 export interface RadialGaugeProps {
   values: FieldDisplay[];
@@ -81,46 +81,15 @@ export function RadialGauge(props: RadialGaugeProps) {
   const startAngle = shape === 'gauge' ? 250 : 0;
   const endAngle = shape === 'gauge' ? 110 : 360;
 
-  const dimensions = calculateDimensions(width, height, endAngle, glowBar, spotlight, roundedBars, barWidthFactor);
-  console.log('dimensions', dimensions);
+  const defs: React.ReactNode[] = [];
+  const graphics: React.ReactNode[] = [];
+  let sparklineElement: React.ReactNode | null = null;
 
-  const primaryValue = values[0];
-  const color = primaryValue.display.color ?? theme.colors.primary.main;
-
-  const { angle } = getValueAngleForValue(primaryValue, startAngle, endAngle);
-
-  return (
-    <div className={styles.vizWrapper} style={{ width, height }}>
-      <svg width={width} height={height}>
-        <defs>
-          {values.map((displayValue, barIndex) => (
-            <GradientDef
-              key={barIndex}
-              fieldDisplay={displayValue}
-              index={barIndex}
-              theme={theme}
-              gaugeId={gaugeId}
-              gradient={gradient}
-              dimensions={dimensions}
-              shape={shape}
-            />
-          ))}
-          {spotlight && (
-            <SpotlightGradient
-              angle={angle + startAngle}
-              gaugeId={gaugeId}
-              dimensions={dimensions}
-              roundedBars={roundedBars}
-              theme={theme}
-            />
-          )}
-          {glowBar && <GlowGradient gaugeId={gaugeId} radius={dimensions.radius} />}
-          {glowCenter && <CenterGlowGradient gaugeId={gaugeId} color={color} />}
-        </defs>
-        <g>
-          {values.map((displayValue, barIndex) => {
-            const barColor = getColorForBar(displayValue.display, barIndex, gradient, gaugeId);
-            //const barSize = dimensions.radius - (barWidth * 2 + 8) * barIndex;
+  for (let barIndex = 0; barIndex < values.length; barIndex++) {
+    const displayValue = values[barIndex];
+    const { angle, angleRange } = getValueAngleForValue(displayValue, startAngle, endAngle);
+    const color = displayValue.display.color ?? 'gray';
+    const dimensions = calculateDimensions(width, height, endAngle, glowBar, roundedBars, barWidthFactor, barIndex);
 
     let displayProcessor = getDisplayProcessor();
 
@@ -128,86 +97,111 @@ export function RadialGauge(props: RadialGaugeProps) {
       displayProcessor = displayValue.view.getFieldDisplayProcessor(displayValue.colIndex) ?? displayProcessor;
     }
 
+    const spotlightGradientId = `spotlight-${barIndex}-${gaugeId}`;
+    const glowFilterId = `glow-${gaugeId}`;
+    const colorGradientId = `bar-color-${barIndex}-${gaugeId}`;
+    const barColor = gradient !== 'none' ? `url(#${colorGradientId})` : color;
+
+    defs.push(
+      <GradientDef
+        key={`gradient-${barIndex}`}
+        fieldDisplay={displayValue}
+        id={colorGradientId}
+        theme={theme}
+        gradient={gradient}
+        dimensions={dimensions}
+        shape={shape}
+      />
+    );
+
+    if (spotlight) {
+      defs.push(
+        <SpotlightGradient
+          key={spotlightGradientId}
+          id={spotlightGradientId}
+          angle={angle + startAngle}
+          dimensions={dimensions}
+          roundedBars={roundedBars}
+          theme={theme}
+        />
+      );
+    }
+
     if (segmentCount > 1) {
-              return (
+      graphics.push(
         <RadialBarSegmented
           dimensions={dimensions}
-                  key={barIndex}
-                  gaugeId={gaugeId}
           fieldDisplay={displayValue}
+          angleRange={angleRange}
           startAngle={startAngle}
-                  endAngle={endAngle}
           color={barColor}
-                  spotlight={spotlight}
-                  glow={glowBar}
+          glowFilter={`url(#${glowFilterId})`}
           segmentCount={segmentCount}
           segmentSpacing={segmentSpacing}
           displayProcessor={displayProcessor}
           gradient={gradient}
         />
       );
-            }
-
-            return (
+    } else {
+      graphics.push(
         <RadialBar
           dimensions={dimensions}
           key={barIndex}
-                gaugeId={gaugeId}
-                fieldDisplay={displayValue}
+          angle={angle}
+          angleRange={angleRange}
           startAngle={startAngle}
-                endAngle={endAngle}
           color={barColor}
           roundedBars={roundedBars}
-                spotlight={spotlight}
-                glow={glowBar}
+          spotlightStroke={`url(#${spotlightGradientId})`}
+          glowFilter={`url(#${glowFilterId})`}
         />
       );
-          })}
-        </g>
-        <g>
-          {glowCenter && <MiddleCircle fill={`url(#circle-glow-${gaugeId})`} dimensions={dimensions} />}
-          {primaryValue && (
+    }
+
+    // These elements are only added for first value / bar
+
+    if (barIndex === 0) {
+      if (glowBar) {
+        defs.push(<GlowGradient id={glowFilterId} radius={dimensions.radius} />);
+      }
+
+      if (glowCenter) {
+        graphics.push(<MiddleCircleGlow gaugeId={gaugeId} color={color} dimensions={dimensions} />);
+      }
+
+      graphics.push(
         <RadialText
           vizCount={vizCount}
           textMode={textMode}
-              displayValue={primaryValue.display}
+          displayValue={displayValue.display}
           dimensions={dimensions}
           theme={theme}
           shape={shape}
         />
-          )}
-        </g>
-      </svg>
-      {primaryValue && primaryValue.sparkline && (
+      );
+
+      if (displayValue.sparkline) {
+        sparklineElement = (
           <RadialSparkline
-          sparkline={primaryValue.sparkline}
+            sparkline={displayValue.sparkline}
             dimensions={dimensions}
             theme={theme}
             color={color}
             shape={shape}
           />
-      )}
-    </div>
         );
-}
-
-function getColorForBar(displayValue: DisplayValue, barIndex: number, gradient: RadialGradientMode, gaugeId: string) {
-  if (gradient === 'none') {
-    return displayValue.color ?? 'gray';
+      }
+    }
   }
 
-  return `url(#${getGradientId(gaugeId, barIndex)})`;
-}
-
-export interface MiddleCircleProps {
-  dimensions: GaugeDimensions;
-  fill?: string;
-  className?: string;
-}
-
-export function MiddleCircle({ dimensions, fill, className }: MiddleCircleProps) {
   return (
-    <circle cx={dimensions.centerX} cy={dimensions.centerY} r={dimensions.radius} fill={fill} className={className} />
+    <div className={styles.vizWrapper} style={{ width, height }}>
+      <svg width={width} height={height}>
+        <defs>{defs}</defs>
+        {graphics}
+      </svg>
+      {sparklineElement}
+    </div>
   );
 }
 

packages/grafana-ui/src/components/RadialGauge/effects.tsx

@@ -3,15 +3,15 @@ import { GrafanaTheme2 } from '@grafana/data';
 import { GaugeDimensions } from './utils';
 
 export interface GlowGradientProps {
-  gaugeId: string;
+  id: string;
   radius: number;
 }
 
-export function GlowGradient({ gaugeId, radius }: GlowGradientProps) {
+export function GlowGradient({ id, radius }: GlowGradientProps) {
   const glowSize = 0.04 * radius;
 
   return (
-    <filter id={`glow-${gaugeId}`} filterUnits="userSpaceOnUse">
+    <filter id={id} filterUnits="userSpaceOnUse">
       <feGaussianBlur stdDeviation={glowSize} />
       <feComponentTransfer>
         <feFuncA type="linear" slope="1" />
@@ -22,13 +22,13 @@ export function GlowGradient({ gaugeId, radius }: GlowGradientProps) {
 }
 
 export function SpotlightGradient({
-  gaugeId,
+  id,
   dimensions,
   roundedBars,
   angle,
   theme,
 }: {
-  gaugeId: string;
+  id: string;
   dimensions: GaugeDimensions;
   angle: number;
   roundedBars: boolean;
@@ -44,7 +44,7 @@ export function SpotlightGradient({
   const color = theme.colors.text.maxContrast;
 
   return (
-    <linearGradient x1={x1} y1={y1} x2={x2} y2={y2} id={`spotlight-${gaugeId}`} gradientUnits="userSpaceOnUse">
+    <linearGradient x1={x1} y1={y1} x2={x2} y2={y2} id={id} gradientUnits="userSpaceOnUse">
       <stop offset="0%" stopColor={color} stopOpacity={0.0} />
       <stop offset="95%" stopColor={color} stopOpacity={0.5} />
       {roundedBars && <stop offset="100%" stopColor={color} stopOpacity={roundedBars ? 0.7 : 1} />}
@@ -60,3 +60,27 @@ export function CenterGlowGradient({ gaugeId, color }: { gaugeId: string; color:
     </radialGradient>
   );
 }
+
+export interface CenterGlowProps {
+  dimensions: GaugeDimensions;
+  gaugeId: string;
+  color?: string;
+}
+
+export function MiddleCircleGlow({ dimensions, gaugeId, color }: CenterGlowProps) {
+  const gradientId = `circle-glow-${gaugeId}`;
+
+  return (
+    <>
+      <defs>
+        <radialGradient id={gradientId} r={'50%'} fr={'0%'}>
+          <stop offset="0%" stopColor={color} stopOpacity={0.2} />
+          <stop offset="90%" stopColor={color} stopOpacity={0} />
+        </radialGradient>
+      </defs>
+      <g>
+        <circle cx={dimensions.centerX} cy={dimensions.centerY} r={dimensions.radius} fill={`url(#${gradientId})`} />
+      </g>
+    </>
+  );
+}

packages/grafana-ui/src/components/RadialGauge/utils.ts

@@ -1,17 +1,17 @@
 import { FieldDisplay } from '@grafana/data';
 
 export function getValueAngleForValue(fieldDisplay: FieldDisplay, startAngle: number, endAngle: number) {
-  const range = (360 % (startAngle === 0 ? 1 : startAngle)) + endAngle;
+  const angleRange = (360 % (startAngle === 0 ? 1 : startAngle)) + endAngle;
   const min = fieldDisplay.field.min ?? 0;
   const max = fieldDisplay.field.max ?? 100;
 
-  let angle = ((fieldDisplay.display.numeric - min) / (max - min)) * range;
+  let angle = ((fieldDisplay.display.numeric - min) / (max - min)) * angleRange;
 
-  if (angle > range) {
-    angle = range;
+  if (angle > angleRange) {
+    angle = angleRange;
   }
 
-  return { range, angle };
+  return { angleRange, angle };
 }
 
 /**
@@ -31,6 +31,7 @@ export interface GaugeDimensions {
   centerY: number;
   barWidth: number;
   endAngle?: number;
+  barIndex: number;
 }
 
 export function calculateDimensions(
@@ -38,9 +39,9 @@ export function calculateDimensions(
   height: number,
   endAngle: number,
   glow: boolean,
-  spotlight: boolean,
   roundedBars: boolean,
-  barWidthFactor: number
+  barWidthFactor: number,
+  barIndex: number
 ): GaugeDimensions {
   const yMaxAngle = endAngle > 180 ? 180 : endAngle;
   let margin = 0;
@@ -67,9 +68,14 @@ export function calculateDimensions(
     outerRadius -= (margin * 2) / (1 + heightRatioV);
   }
 
-  const innerRadius = outerRadius - barWidth / 2;
+  let innerRadius = outerRadius - barWidth / 2;
+
   const centerX = width / 2;
   const centerY = outerRadius + margin;
 
-  return { margin, radius: innerRadius, centerX, centerY, barWidth };
+  if (barIndex > 0) {
+    innerRadius = innerRadius - (barWidth + 4) * barIndex;
+  }
+
+  return { margin, radius: innerRadius, centerX, centerY, barWidth, barIndex };
 }