@antv/g2/esm/coordinate/polar.js

the Grammar of Graphics in Javascript

import { convertAngles } from '../utils/angle';
export const getPolarOptions = (options = {}) => {
    const defaultOptions = {
        startAngle: -Math.PI / 2,
        endAngle: (Math.PI * 3) / 2,
        innerRadius: 0,
        outerRadius: 1,
    };
    const polarOption = Object.assign(Object.assign({}, defaultOptions), options);
    return Object.assign(Object.assign({}, polarOption), convertAngles(polarOption.startAngle, polarOption.endAngle));
};
/**
 * Polar transformation for circular charts using center of canvas as origin.
 * @todo Adjust size of canvas by startAngle and endAngle to make chart as big as possible.
 */
export const Polar = (options) => {
    const { startAngle, endAngle, innerRadius, outerRadius } = getPolarOptions(options);
    return [
        ['translate', 0, 0.5],
        ['reflect.y'],
        ['translate', 0, -0.5],
        ['polar', startAngle, endAngle, innerRadius, outerRadius],
    ];
};
Polar.props = {};
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