@antv/g2
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the Grammar of Graphics in Javascript
175 lines • 8.01 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.Curve = void 0;
const d3_shape_1 = require("d3-shape");
const selection_1 = require("../../utils/selection");
const coordinate_1 = require("../../utils/coordinate");
const vector_1 = require("../../utils/vector");
const utils_1 = require("../utils");
const helper_1 = require("../../utils/helper");
const createElement_1 = require("../../utils/createElement");
/**
* Given a points sequence, split it into an array of defined points
* and an array of undefined segments.
*
* Input - [p0, p1, p2, p3, p4, p5], p1 ~ p2 is `Y1`, p3 ~ p5 is `Y0`.
* Output - When all of Y1 & Y0 is defined, move into defined points, or else undefined segments.
*/
function segmentation(points, defined) {
const definedPointsY1 = [];
const definedPointsY0 = [];
const segments = [];
let m = false; // Is in a undefined sequence.
let dp = null; // The previous defined point.
const mid = points.length / 2;
for (let i = 0; i < mid; i++) {
const y1 = points[i];
const y0 = points[i + mid];
// If current point is a undefined point,
// enter a undefined sequence.
if ([...y1, ...y0].some((v) => !defined(v)))
m = true;
else {
definedPointsY1.push(y1);
definedPointsY0.push(y0);
// If current point is a defined point,
// and is in a undefined sequence, save
// the two closest defined points as this
// undefined sequence and exit it.
if (m && dp) {
m = false;
const [dpy1, dpy0] = dp;
segments.push([dpy1, y1, dpy0, y0]);
}
// Update the previous defined point.
dp = [y1, y0];
}
}
return [definedPointsY1.concat(definedPointsY0), segments];
}
const DoubleArea = (0, createElement_1.createElement)((g) => {
const { areaPath, connectPath, areaStyle, connectStyle } = g.attributes;
const document = g.ownerDocument;
(0, selection_1.select)(g)
.maybeAppend('connect-path', () => document.createElement('path', {}))
.style('d', connectPath)
.call(utils_1.applyStyle, connectStyle);
(0, selection_1.select)(g)
.maybeAppend('area-path', () => document.createElement('path', {}))
.style('d', areaPath)
.call(utils_1.applyStyle, areaStyle);
});
const Curve = (options, context) => {
const { curve, gradient = false, defined = (d) => !Number.isNaN(d) && d !== undefined && d !== null, connect: connectNulls = false } = options, style = __rest(options, ["curve", "gradient", "defined", "connect"]);
const { coordinate, document } = context;
return (P, value, defaults) => {
const { color: defaultColor } = defaults;
const { color = defaultColor, seriesColor: sc, seriesX: sx, seriesY: sy, } = value;
const tpShape = (0, coordinate_1.isTranspose)(coordinate);
const transform = (0, utils_1.getTransform)(coordinate, value);
const fill = gradient && sc
? (0, utils_1.computeGradient)(sc, sx, sy, gradient, undefined, tpShape)
: color;
const finalStyle = Object.assign(Object.assign(Object.assign(Object.assign({}, defaults), { stroke: fill, fill: fill }), (transform && { transform })), style);
const [DP, MS] = segmentation(P, defined);
const connectStyle = (0, helper_1.subObject)(finalStyle, 'connect');
const missing = !!MS.length;
const getPathNode = (path) => {
return (0, selection_1.select)(document.createElement('path', {}))
.style('d', path || '')
.call(utils_1.applyStyle, finalStyle)
.node();
};
if (!(0, coordinate_1.isPolar)(coordinate)) {
/**
* Draw area shape by points.
*/
const areaPath = (points) => {
const Y1 = points.slice(0, points.length / 2);
const Y0 = points.slice(points.length / 2);
return tpShape
? (0, d3_shape_1.area)()
.y((_, idx) => Y1[idx][1])
.x1((_, idx) => Y1[idx][0])
.x0((_, idx) => Y0[idx][0])
.defined((_, idx) => [...Y1[idx], ...Y0[idx]].every(defined))
.curve(curve)(Y1)
: (0, d3_shape_1.area)()
.x((_, idx) => Y1[idx][0])
.y1((_, idx) => Y1[idx][1])
.y0((_, idx) => Y0[idx][1])
.defined((_, idx) => [...Y1[idx], ...Y0[idx]].every(defined))
.curve(curve)(Y1);
};
// Draw one area of connected defined points.
if (!missing || (connectNulls && !Object.keys(connectStyle).length)) {
return getPathNode(areaPath(DP));
}
// Draw one area of unconnected defined points.
if (missing && !connectNulls) {
return getPathNode(areaPath(P));
}
// Draw two area.
// One for unconnected defined points.
// One for connected segments.
return (0, selection_1.select)(new DoubleArea())
.style('areaStyle', finalStyle)
.style('connectStyle', Object.assign(Object.assign({}, connectStyle), style))
.style('areaPath', areaPath(P))
.style('connectPath', MS.map(areaPath).join(''))
.node();
}
else {
/**
* Draw areaRadial shape by points.
*/
const areaRadialPath = (points) => {
const center = coordinate.getCenter();
const Y1 = points.slice(0, points.length / 2);
const Y0 = points.slice(points.length / 2);
return (0, d3_shape_1.areaRadial)()
.angle((_, idx) => (0, vector_1.angleWithQuadrant)((0, vector_1.sub)(Y1[idx], center)))
.outerRadius((_, idx) => (0, vector_1.dist)(Y1[idx], center))
.innerRadius((_, idx) => (0, vector_1.dist)(Y0[idx], center))
.defined((_, idx) => [...Y1[idx], ...Y0[idx]].every(defined))
.curve(curve)(Y0);
};
// Draw one area of connected defined points.
if (!missing || (connectNulls && !Object.keys(connectStyle).length)) {
return getPathNode(areaRadialPath(DP));
}
// Draw one area of unconnected defined points.
if (missing && !connectNulls) {
return getPathNode(areaRadialPath(P));
}
// Draw two area.
// One for unconnected defined points.
// One for connected segments.
return (0, selection_1.select)(new DoubleArea())
.style('areaStyle', finalStyle)
.style('connectStyle', Object.assign(Object.assign({}, connectStyle), style))
.style('areaPath', areaRadialPath(P))
.style('connectPath', MS.map(areaRadialPath).join(''))
.node();
}
};
};
exports.Curve = Curve;
exports.Curve.props = {
defaultMarker: 'smooth',
defaultEnterAnimation: 'fadeIn',
defaultUpdateAnimation: 'morphing',
defaultExitAnimation: 'fadeOut',
};
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