@antv/scale/esm/utils/interpolatize.js

Toolkit for mapping abstract data into visual representation.

import { isNumber } from '@antv/util';
import { compose } from './compose';
const createInterpolatorRound = (interpolator) => {
    return (t) => {
        // If result is not number, it can't be rounded.
        const res = interpolator(t);
        return isNumber(res) ? Math.round(res) : res;
    };
};
export function interpolatize(rangeOf, normalizeDomain) {
    return (Scale) => {
        Scale.prototype.rescale = function () {
            this.initRange();
            this.nice();
            const [transform] = this.chooseTransforms();
            this.composeOutput(transform, this.chooseClamp(transform));
        };
        Scale.prototype.initRange = function () {
            const { interpolator } = this.options;
            this.options.range = rangeOf(interpolator);
        };
        Scale.prototype.composeOutput = function (transform, clamp) {
            const { domain, interpolator, round } = this.getOptions();
            const normalize = normalizeDomain(domain.map(transform));
            const interpolate = round ? createInterpolatorRound(interpolator) : interpolator;
            this.output = compose(interpolate, normalize, clamp, transform);
        };
        Scale.prototype.invert = undefined;
    };
}
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