@antv/g2
Version:
the Grammar of Graphics in Javascript
81 lines • 3.16 kB
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;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Trail = void 0;
const d3_path_1 = require("@antv/vendor/d3-path");
const selection_1 = require("../../utils/selection");
const utils_1 = require("../utils");
const vector_1 = require("../../utils/vector");
const helper_1 = require("../../utils/helper");
const curve_1 = require("./curve");
/**
*
* x9-x0---------x1-x2
* / |r1 |r2 \
*x8---p0---------p1---x3
* \ r4| | r3 /
* x7-x6--------x5-x4
*/
function stroke(path, p0, p1, s0, s1) {
const v = (0, vector_1.sub)(p1, p0);
const a = (0, vector_1.angle)(v);
const a1 = a + Math.PI / 2;
const r1 = [(s0 / 2) * Math.cos(a1), (s0 / 2) * Math.sin(a1)];
const r2 = [(s1 / 2) * Math.cos(a1), (s1 / 2) * Math.sin(a1)];
const r3 = [(s1 / 2) * Math.cos(a), (s1 / 2) * Math.sin(a)];
const r4 = [(s0 / 2) * Math.cos(a), (s0 / 2) * Math.sin(a)];
const x0 = (0, vector_1.add)(p0, r1);
const x1 = (0, vector_1.add)(p1, r2);
const x2 = (0, vector_1.add)(x1, r3);
const x3 = (0, vector_1.add)(p1, r3);
const x4 = (0, vector_1.sub)(x3, r2);
const x5 = (0, vector_1.sub)(p1, r2);
const x6 = (0, vector_1.sub)(p0, r1);
const x7 = (0, vector_1.sub)(x6, r4);
const x8 = (0, vector_1.sub)(p0, r4);
const x9 = (0, vector_1.sub)(x0, r4);
path.moveTo(...x0);
path.lineTo(...x1);
path.arcTo(...x2, ...x3, s1 / 2);
path.arcTo(...x4, ...x5, s1 / 2);
path.lineTo(...x6);
path.arcTo(...x7, ...x8, s0 / 2);
path.arcTo(...x9, ...x0, s0 / 2);
path.closePath();
}
// @todo Support connect and connectStyle.
const Trail = (options, context) => {
const { document } = context;
return (P, value, defaults) => {
const { seriesSize, color } = value;
const { color: defaultColor } = defaults, rest = __rest(defaults, ["color"]);
const path = (0, d3_path_1.path)();
for (let i = 0; i < P.length - 1; i++) {
const p0 = P[i];
const p1 = P[i + 1];
const s0 = seriesSize[i];
const s1 = seriesSize[i + 1];
if ([...p0, ...p1].every(helper_1.defined))
stroke(path, p0, p1, s0, s1);
}
return (0, selection_1.select)(document.createElement('path', {}))
.call(utils_1.applyStyle, rest)
.style('fill', color || defaultColor)
.style('d', path.toString())
.call(utils_1.applyStyle, options)
.node();
};
};
exports.Trail = Trail;
exports.Trail.props = Object.assign(Object.assign({}, curve_1.Curve.props), { defaultMarker: 'line' });
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