228 lines
6.5 KiB
JavaScript
228 lines
6.5 KiB
JavaScript
"use strict";
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function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.dataToPath = dataToPath;
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exports.dataToRectPath = dataToRectPath;
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exports.getAreaLineY = getAreaLineY;
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exports.getLinePath = getLinePath;
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exports.getRectPath = getRectPath;
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exports.getRectPoints = getRectPoints;
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exports.getSmoothLinePath = getSmoothLinePath;
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exports.linePathToAreaPath = linePathToAreaPath;
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var pathUtil = _interopRequireWildcard(require("@antv/path-util"));
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var _scale = require("@antv/scale");
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var _util = require("@antv/util");
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function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
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function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && {}.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
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var __spreadArray = void 0 && (void 0).__spreadArray || function (to, from, pack) {
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if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
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if (ar || !(i in from)) {
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if (!ar) ar = Array.prototype.slice.call(from, 0, i);
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ar[i] = from[i];
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}
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}
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return to.concat(ar || Array.prototype.slice.call(from));
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};
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/**
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* 点数组转 path
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* @param points
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*/
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function pointsToPath(points) {
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return (0, _util.map)(points, function (p, idx) {
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var command = idx === 0 ? 'M' : 'L';
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var x = p[0],
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y = p[1];
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return [command, x, y];
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});
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}
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/**
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* 将点连接成路径 path
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* @param points
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*/
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function getLinePath(points) {
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return pointsToPath(points);
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}
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/**
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* 将点连成平滑的曲线
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* @param points
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*/
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function getSmoothLinePath(points) {
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if (points.length <= 2) {
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// 两点以内直接绘制成路径
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return getLinePath(points);
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}
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var data = [];
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(0, _util.each)(points, function (p) {
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// 当前点和上一个点一样的时候，忽略掉
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if (!(0, _util.isEqual)(p, data.slice(data.length - 2))) {
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data.push(p[0], p[1]);
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}
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});
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var path = pathUtil.catmullRom2Bezier(data, false);
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var _a = (0, _util.head)(points),
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x = _a[0],
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y = _a[1];
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path.unshift(['M', x, y]);
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return path;
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}
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/**
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* 将数据转成 path，利用 scale 的归一化能力
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* @param data
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* @param width
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* @param height
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* @param smooth
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*/
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function dataToPath(data, width, height, smooth) {
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if (smooth === void 0) {
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smooth = true;
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}
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// 利用 scale 来获取 y 上的映射
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var y = new _scale.Linear({
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values: data
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});
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var x = new _scale.Category({
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values: (0, _util.map)(data, function (v, idx) {
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return idx;
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})
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});
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var points = (0, _util.map)(data, function (v, idx) {
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return [x.scale(idx) * width, height - y.scale(v) * height];
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});
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return smooth ? getSmoothLinePath(points) : getLinePath(points);
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}
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function dataToRectPath(data, width, height, barWidth) {
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if (barWidth === void 0) {
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barWidth = 5;
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}
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// 利用 scale 来获取 y 上的映射
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var y = new _scale.Linear({
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values: data
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});
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var x = new _scale.Category({
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values: (0, _util.map)(data, function (v, idx) {
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return idx;
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})
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});
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var points = (0, _util.map)(data, function (v, idx) {
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return [x.scale(idx) * width, height - y.scale(v) * height];
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});
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var rectPoints = [];
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for (var i = 0; i < points.length; i++) {
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var point = points[i];
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var param = {
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x: point[0],
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y: point[1],
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y0: height,
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size: barWidth
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};
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var rectPoint = getRectPoints(param);
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rectPoints.push.apply(rectPoints, rectPoint);
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}
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return getRectPath(rectPoints);
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}
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/**
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* 获得 area 面积的横向连接线的 px 位置
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* @param data
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* @param width
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* @param height
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*/
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function getAreaLineY(data, height) {
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var y = new _scale.Linear({
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values: data
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});
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var lineY = Math.max(0, y.min);
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return height - y.scale(lineY) * height;
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}
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/**
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* 线 path 转 area path
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* @param path
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* @param width
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* @param height
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*/
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function linePathToAreaPath(path, width, height, data) {
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var areaPath = __spreadArray([], path, true);
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var lineYPx = getAreaLineY(data, height);
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areaPath.push(['L', width, lineYPx]);
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areaPath.push(['L', 0, lineYPx]);
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areaPath.push(['Z']);
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return areaPath;
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}
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/**
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* @ignore
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* 根据数据点生成矩形的四个关键点
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* @param pointInfo 数据点信息
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* @returns rect points 返回矩形四个顶点信息
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*/
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function getRectPoints(pointInfo) {
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var x = pointInfo.x,
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y = pointInfo.y,
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y0 = pointInfo.y0,
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size = pointInfo.size;
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// 有 4 种情况，
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// 1. x, y 都不是数组
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// 2. y是数组，x不是
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// 3. x是数组，y不是
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// 4. x, y 都是数组
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var yMin;
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var yMax;
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if ((0, _util.isArray)(y)) {
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yMin = y[0], yMax = y[1];
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} else {
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yMin = y0;
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yMax = y;
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}
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var xMin;
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var xMax;
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if ((0, _util.isArray)(x)) {
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xMin = x[0], xMax = x[1];
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} else {
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xMin = x - size / 2;
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xMax = x + size / 2;
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}
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var points = [{
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x: xMin,
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y: yMin
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}, {
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x: xMin,
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y: yMax
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}];
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// 矩形的四个关键点，结构如下（左下角顺时针连接）
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// 1 ---- 2
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// | |
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// 0 ---- 3
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points.push({
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x: xMax,
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y: yMax
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}, {
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x: xMax,
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y: yMin
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});
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return points;
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}
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/**
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* @ignore
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* 根据矩形关键点绘制 path
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* @param points 关键点数组
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* @param isClosed path 是否需要闭合
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* @returns 返回矩形的 path
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*/
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function getRectPath(points, isClosed) {
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if (isClosed === void 0) {
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isClosed = true;
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}
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var path = [];
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var firstPoint = points[0];
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path.push(['M', firstPoint.x, firstPoint.y]);
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for (var i = 1, len = points.length; i < len; i++) {
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path.push(['L', points[i].x, points[i].y]);
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}
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// 对于 shape="line" path 不应该闭合，否则会造成 lineCap 绘图属性失效
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if (isClosed) {
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path.push(['L', firstPoint.x, firstPoint.y]); // 需要闭合
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path.push(['z']);
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}
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return path;
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} |