@mui/x-charts/internals/plugins/featurePlugins/useChartPolarAxis/getAxisIndex.js

The community edition of MUI X Charts components.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getAxisIndex = getAxisIndex;
var _isBandScale = require("../../../isBandScale");
var _clampAngle = require("../../../clampAngle");
/**
 * For a pointer coordinate, this function returns the value and dataIndex associated.
 * Returns `-1` if the coordinate does not match a value.
 */
function getAxisIndex(axisConfig, pointerValue) {
  const {
    scale,
    data: axisData,
    reverse
  } = axisConfig;
  if (!(0, _isBandScale.isBandScale)(scale)) {
    throw new Error('MUI X Charts: getAxisValue is not implemented for polare continuous axes.');
  }
  if (!axisData) {
    return -1;
  }
  const angleGap = (0, _clampAngle.clampAngleRad)(pointerValue - Math.min(...scale.range()));
  const dataIndex = scale.bandwidth() === 0 ? Math.floor((angleGap + scale.step() / 2) / scale.step()) % axisData.length : Math.floor(angleGap / scale.step());
  if (dataIndex < 0 || dataIndex >= axisData.length) {
    return -1;
  }
  return reverse ? axisData.length - 1 - dataIndex : dataIndex;
}