@antv/g2/esm/shape/point/color.js

the Grammar of Graphics in Javascript

var __rest = (this && this.__rest) || function (s, e) {
    var t = {};
    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
        t[p] = s[p];
    if (s != null && typeof Object.getOwnPropertySymbols === "function")
        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
                t[p[i]] = s[p[i]];
        }
    return t;
};
import { isFisheye } from '../../utils/coordinate';
import { Symbols } from '../../utils/marker';
import { select } from '../../utils/selection';
import { applyStyle, getOrigin, toOpacityKey } from '../utils';
export function getRadius(mode, points, value, coordinate) {
    if (points.length === 1)
        return undefined;
    const { size } = value;
    if (mode === 'fixed')
        return size;
    if (mode === 'normal' || isFisheye(coordinate)) {
        const [[x0, y0], [x2, y2]] = points;
        const a = Math.abs((x2 - x0) / 2);
        const b = Math.abs((y2 - y0) / 2);
        return Math.max(0, (a + b) / 2);
    }
    return size;
}
/**
 * Render point in different coordinate.
 */
export const Color = (options, context) => {
    // Render border only when colorAttribute is stroke.
    const { colorAttribute, symbol, mode = 'auto' } = options, style = __rest(options, ["colorAttribute", "symbol", "mode"]);
    const path = Symbols.get(symbol) || Symbols.get('point');
    const { coordinate, document } = context;
    return (points, value, defaults) => {
        const { lineWidth, color: defaultColor } = defaults;
        const finalLineWidth = style.stroke ? lineWidth || 1 : lineWidth;
        const { color = defaultColor, transform, opacity } = value;
        const [cx, cy] = getOrigin(points);
        const r = getRadius(mode, points, value, coordinate);
        const finalRadius = r || style.r || defaults.r;
        return select(document.createElement('path', {}))
            .call(applyStyle, defaults)
            .style('fill', 'transparent')
            .style('d', path(cx, cy, finalRadius))
            .style('lineWidth', finalLineWidth)
            .style('transform', transform)
            .style('transformOrigin', `${cx - finalRadius} ${cy - finalRadius}`)
            .style('stroke', color)
            .style(toOpacityKey(options), opacity)
            .style(colorAttribute, color)
            .call(applyStyle, style)
            .node();
    };
};
Color.props = {
    defaultEnterAnimation: 'fadeIn',
    defaultUpdateAnimation: 'morphing',
    defaultExitAnimation: 'fadeOut',
};
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