swOperation/node_modules/@antv/g-base/lib/util/path.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.rectPath = exports.pathToCurve = exports.pathToAbsolute = exports.parsePathString = exports.parsePathArray = exports.intersection = exports.formatPath = exports.fillPathByDiff = exports.fillPath = exports.catmullRomToBezier = void 0;
var util_1 = require("@antv/util");
var SPACES = '\x09\x0a\x0b\x0c\x0d\x20\xa0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029';
var PATH_COMMAND = new RegExp("([a-z])[" + SPACES + ",]*((-?\\d*\\.?\\d*(?:e[\\-+]?\\d+)?[" + SPACES + "]*,?[" + SPACES + "]*)+)", 'ig');
var PATH_VALUES = new RegExp("(-?\\d*\\.?\\d*(?:e[\\-+]?\\d+)?)[" + SPACES + "]*,?[" + SPACES + "]*", 'ig');
// Parse given path string into an array of arrays of path segments
var parsePathString = function (pathString) {
    if (!pathString) {
        return null;
    }
    if (util_1.isArray(pathString)) {
        return pathString;
    }
    var paramCounts = {
        a: 7,
        c: 6,
        o: 2,
        h: 1,
        l: 2,
        m: 2,
        r: 4,
        q: 4,
        s: 4,
        t: 2,
        v: 1,
        u: 3,
        z: 0,
    };
    var data = [];
    String(pathString).replace(PATH_COMMAND, function (a, b, c) {
        var params = [];
        var name = b.toLowerCase();
        c.replace(PATH_VALUES, function (a, b) {
            b && params.push(+b);
        });
        if (name === 'm' && params.length > 2) {
            data.push([b].concat(params.splice(0, 2)));
            name = 'l';
            b = b === 'm' ? 'l' : 'L';
        }
        if (name === 'o' && params.length === 1) {
            data.push([b, params[0]]);
        }
        if (name === 'r') {
            data.push([b].concat(params));
        }
        else {
            while (params.length >= paramCounts[name]) {
                data.push([b].concat(params.splice(0, paramCounts[name])));
                if (!paramCounts[name]) {
                    break;
                }
            }
        }
        return pathString;
    });
    return data;
};
exports.parsePathString = parsePathString;
// http://schepers.cc/getting-to-the-point
var catmullRomToBezier = function (crp, z) {
    var d = [];
    // @ts-ignore
    for (var i = 0, iLen = crp.length; iLen - 2 * !z > i; i += 2) {
        var p = [
            {
                x: +crp[i - 2],
                y: +crp[i - 1],
            },
            {
                x: +crp[i],
                y: +crp[i + 1],
            },
            {
                x: +crp[i + 2],
                y: +crp[i + 3],
            },
            {
                x: +crp[i + 4],
                y: +crp[i + 5],
            },
        ];
        if (z) {
            if (!i) {
                p[0] = {
                    x: +crp[iLen - 2],
                    y: +crp[iLen - 1],
                };
            }
            else if (iLen - 4 === i) {
                p[3] = {
                    x: +crp[0],
                    y: +crp[1],
                };
            }
            else if (iLen - 2 === i) {
                p[2] = {
                    x: +crp[0],
                    y: +crp[1],
                };
                p[3] = {
                    x: +crp[2],
                    y: +crp[3],
                };
            }
        }
        else {
            if (iLen - 4 === i) {
                p[3] = p[2];
            }
            else if (!i) {
                p[0] = {
                    x: +crp[i],
                    y: +crp[i + 1],
                };
            }
        }
        d.push([
            'C',
            (-p[0].x + 6 * p[1].x + p[2].x) / 6,
            (-p[0].y + 6 * p[1].y + p[2].y) / 6,
            (p[1].x + 6 * p[2].x - p[3].x) / 6,
            (p[1].y + 6 * p[2].y - p[3].y) / 6,
            p[2].x,
            p[2].y,
        ]);
    }
    return d;
};
exports.catmullRomToBezier = catmullRomToBezier;
var ellipsePath = function (x, y, rx, ry, a) {
    var res = [];
    if (a === null && ry === null) {
        ry = rx;
    }
    x = +x;
    y = +y;
    rx = +rx;
    ry = +ry;
    if (a !== null) {
        var rad = Math.PI / 180;
        var x1 = x + rx * Math.cos(-ry * rad);
        var x2 = x + rx * Math.cos(-a * rad);
        var y1 = y + rx * Math.sin(-ry * rad);
        var y2 = y + rx * Math.sin(-a * rad);
        res = [
            ['M', x1, y1],
            ['A', rx, rx, 0, +(a - ry > 180), 0, x2, y2],
        ];
    }
    else {
        res = [['M', x, y], ['m', 0, -ry], ['a', rx, ry, 0, 1, 1, 0, 2 * ry], ['a', rx, ry, 0, 1, 1, 0, -2 * ry], ['z']];
    }
    return res;
};
var pathToAbsolute = function (pathArray) {
    pathArray = parsePathString(pathArray);
    if (!pathArray || !pathArray.length) {
        return [['M', 0, 0]];
    }
    var res = [];
    var x = 0;
    var y = 0;
    var mx = 0;
    var my = 0;
    var start = 0;
    var pa0;
    var dots;
    if (pathArray[0][0] === 'M') {
        x = +pathArray[0][1];
        y = +pathArray[0][2];
        mx = x;
        my = y;
        start++;
        res[0] = ['M', x, y];
    }
    var crz = pathArray.length === 3 &&
        pathArray[0][0] === 'M' &&
        pathArray[1][0].toUpperCase() === 'R' &&
        pathArray[2][0].toUpperCase() === 'Z';
    for (var r = void 0, pa = void 0, i = start, ii = pathArray.length; i < ii; i++) {
        res.push((r = []));
        pa = pathArray[i];
        pa0 = pa[0];
        if (pa0 !== pa0.toUpperCase()) {
            r[0] = pa0.toUpperCase();
            switch (r[0]) {
                case 'A':
                    r[1] = pa[1];
                    r[2] = pa[2];
                    r[3] = pa[3];
                    r[4] = pa[4];
                    r[5] = pa[5];
                    r[6] = +pa[6] + x;
                    r[7] = +pa[7] + y;
                    break;
                case 'V':
                    r[1] = +pa[1] + y;
                    break;
                case 'H':
                    r[1] = +pa[1] + x;
                    break;
                case 'R':
                    dots = [x, y].concat(pa.slice(1));
                    for (var j = 2, jj = dots.length; j < jj; j++) {
                        dots[j] = +dots[j] + x;
                        dots[++j] = +dots[j] + y;
                    }
                    res.pop();
                    res = res.concat(catmullRomToBezier(dots, crz));
                    break;
                case 'O':
                    res.pop();
                    dots = ellipsePath(x, y, pa[1], pa[2]);
                    dots.push(dots[0]);
                    res = res.concat(dots);
                    break;
                case 'U':
                    res.pop();
                    res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
                    r = ['U'].concat(res[res.length - 1].slice(-2));
                    break;
                case 'M':
                    mx = +pa[1] + x;
                    my = +pa[2] + y;
                    break; // for lint
                default:
                    for (var j = 1, jj = pa.length; j < jj; j++) {
                        r[j] = +pa[j] + (j % 2 ? x : y);
                    }
            }
        }
        else if (pa0 === 'R') {
            dots = [x, y].concat(pa.slice(1));
            res.pop();
            res = res.concat(catmullRomToBezier(dots, crz));
            r = ['R'].concat(pa.slice(-2));
        }
        else if (pa0 === 'O') {
            res.pop();
            dots = ellipsePath(x, y, pa[1], pa[2]);
            dots.push(dots[0]);
            res = res.concat(dots);
        }
        else if (pa0 === 'U') {
            res.pop();
            res = res.concat(ellipsePath(x, y, pa[1], pa[2], pa[3]));
            r = ['U'].concat(res[res.length - 1].slice(-2));
        }
        else {
            for (var k = 0, kk = pa.length; k < kk; k++) {
                r[k] = pa[k];
            }
        }
        pa0 = pa0.toUpperCase();
        if (pa0 !== 'O') {
            switch (r[0]) {
                case 'Z':
                    x = +mx;
                    y = +my;
                    break;
                case 'H':
                    x = r[1];
                    break;
                case 'V':
                    y = r[1];
                    break;
                case 'M':
                    mx = r[r.length - 2];
                    my = r[r.length - 1];
                    break; // for lint
                default:
                    x = r[r.length - 2];
                    y = r[r.length - 1];
            }
        }
    }
    return res;
};
exports.pathToAbsolute = pathToAbsolute;
var l2c = function (x1, y1, x2, y2) {
    return [x1, y1, x2, y2, x2, y2];
};
var q2c = function (x1, y1, ax, ay, x2, y2) {
    var _13 = 1 / 3;
    var _23 = 2 / 3;
    return [_13 * x1 + _23 * ax, _13 * y1 + _23 * ay, _13 * x2 + _23 * ax, _13 * y2 + _23 * ay, x2, y2];
};
var a2c = function (x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
    // for more information of where this math came from visit:
    // http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
    if (rx === ry) {
        rx += 1;
    }
    var _120 = (Math.PI * 120) / 180;
    var rad = (Math.PI / 180) * (+angle || 0);
    var res = [];
    var xy;
    var f1;
    var f2;
    var cx;
    var cy;
    var rotate = function (x, y, rad) {
        var X = x * Math.cos(rad) - y * Math.sin(rad);
        var Y = x * Math.sin(rad) + y * Math.cos(rad);
        return {
            x: X,
            y: Y,
        };
    };
    if (!recursive) {
        xy = rotate(x1, y1, -rad);
        x1 = xy.x;
        y1 = xy.y;
        xy = rotate(x2, y2, -rad);
        x2 = xy.x;
        y2 = xy.y;
        if (x1 === x2 && y1 === y2) {
            // 若弧的起始点和终点重叠则错开一点
            x2 += 1;
            y2 += 1;
        }
        // const cos = Math.cos(Math.PI / 180 * angle);
        // const sin = Math.sin(Math.PI / 180 * angle);
        var x = (x1 - x2) / 2;
        var y = (y1 - y2) / 2;
        var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
        if (h > 1) {
            h = Math.sqrt(h);
            rx = h * rx;
            ry = h * ry;
        }
        var rx2 = rx * rx;
        var ry2 = ry * ry;
        var k = (large_arc_flag === sweep_flag ? -1 : 1) *
            Math.sqrt(Math.abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x)));
        cx = (k * rx * y) / ry + (x1 + x2) / 2;
        cy = (k * -ry * x) / rx + (y1 + y2) / 2;
        // @ts-ignore
        f1 = Math.asin(((y1 - cy) / ry).toFixed(9));
        // @ts-ignore
        f2 = Math.asin(((y2 - cy) / ry).toFixed(9));
        f1 = x1 < cx ? Math.PI - f1 : f1;
        f2 = x2 < cx ? Math.PI - f2 : f2;
        f1 < 0 && (f1 = Math.PI * 2 + f1);
        f2 < 0 && (f2 = Math.PI * 2 + f2);
        if (sweep_flag && f1 > f2) {
            f1 = f1 - Math.PI * 2;
        }
        if (!sweep_flag && f2 > f1) {
            f2 = f2 - Math.PI * 2;
        }
    }
    else {
        f1 = recursive[0];
        f2 = recursive[1];
        cx = recursive[2];
        cy = recursive[3];
    }
    var df = f2 - f1;
    if (Math.abs(df) > _120) {
        var f2old = f2;
        var x2old = x2;
        var y2old = y2;
        f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
        x2 = cx + rx * Math.cos(f2);
        y2 = cy + ry * Math.sin(f2);
        res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
    }
    df = f2 - f1;
    var c1 = Math.cos(f1);
    var s1 = Math.sin(f1);
    var c2 = Math.cos(f2);
    var s2 = Math.sin(f2);
    var t = Math.tan(df / 4);
    var hx = (4 / 3) * rx * t;
    var hy = (4 / 3) * ry * t;
    var m1 = [x1, y1];
    var m2 = [x1 + hx * s1, y1 - hy * c1];
    var m3 = [x2 + hx * s2, y2 - hy * c2];
    var m4 = [x2, y2];
    m2[0] = 2 * m1[0] - m2[0];
    m2[1] = 2 * m1[1] - m2[1];
    if (recursive) {
        return [m2, m3, m4].concat(res);
    }
    res = [m2, m3, m4].concat(res).join().split(',');
    var newres = [];
    for (var i = 0, ii = res.length; i < ii; i++) {
        newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
    }
    return newres;
};
var pathToCurve = function (path, path2) {
    var p = pathToAbsolute(path);
    var p2 = path2 && pathToAbsolute(path2);
    var attrs = {
        x: 0,
        y: 0,
        bx: 0,
        by: 0,
        X: 0,
        Y: 0,
        qx: null,
        qy: null,
    };
    var attrs2 = {
        x: 0,
        y: 0,
        bx: 0,
        by: 0,
        X: 0,
        Y: 0,
        qx: null,
        qy: null,
    };
    var pcoms1 = []; // path commands of original path p
    var pcoms2 = []; // path commands of original path p2
    var pfirst = ''; // temporary holder for original path command
    var pcom = ''; // holder for previous path command of original path
    var ii;
    var processPath = function (path, d, pcom) {
        var nx;
        var ny;
        if (!path) {
            return ['C', d.x, d.y, d.x, d.y, d.x, d.y];
        }
        !(path[0] in
            {
                T: 1,
                Q: 1,
            }) && (d.qx = d.qy = null);
        switch (path[0]) {
            case 'M':
                d.X = path[1];
                d.Y = path[2];
                break;
            case 'A':
                path = ['C'].concat(a2c.apply(0, [d.x, d.y].concat(path.slice(1))));
                break;
            case 'S':
                if (pcom === 'C' || pcom === 'S') {
                    // In "S" case we have to take into account, if the previous command is C/S.
                    nx = d.x * 2 - d.bx; // And reflect the previous
                    ny = d.y * 2 - d.by; // command's control point relative to the current point.
                }
                else {
                    // or some else or nothing
                    nx = d.x;
                    ny = d.y;
                }
                path = ['C', nx, ny].concat(path.slice(1));
                break;
            case 'T':
                if (pcom === 'Q' || pcom === 'T') {
                    // In "T" case we have to take into account, if the previous command is Q/T.
                    d.qx = d.x * 2 - d.qx; // And make a reflection similar
                    d.qy = d.y * 2 - d.qy; // to case "S".
                }
                else {
                    // or something else or nothing
                    d.qx = d.x;
                    d.qy = d.y;
                }
                path = ['C'].concat(q2c(d.x, d.y, d.qx, d.qy, path[1], path[2]));
                break;
            case 'Q':
                d.qx = path[1];
                d.qy = path[2];
                path = ['C'].concat(q2c(d.x, d.y, path[1], path[2], path[3], path[4]));
                break;
            case 'L':
                path = ['C'].concat(l2c(d.x, d.y, path[1], path[2]));
                break;
            case 'H':
                path = ['C'].concat(l2c(d.x, d.y, path[1], d.y));
                break;
            case 'V':
                path = ['C'].concat(l2c(d.x, d.y, d.x, path[1]));
                break;
            case 'Z':
                path = ['C'].concat(l2c(d.x, d.y, d.X, d.Y));
                break;
            default:
                break;
        }
        return path;
    };
    var fixArc = function (pp, i) {
        if (pp[i].length > 7) {
            pp[i].shift();
            var pi = pp[i];
            while (pi.length) {
                pcoms1[i] = 'A'; // if created multiple C:s, their original seg is saved
                p2 && (pcoms2[i] = 'A'); // the same as above
                pp.splice(i++, 0, ['C'].concat(pi.splice(0, 6)));
            }
            pp.splice(i, 1);
            ii = Math.max(p.length, (p2 && p2.length) || 0);
        }
    };
    var fixM = function (path1, path2, a1, a2, i) {
        if (path1 && path2 && path1[i][0] === 'M' && path2[i][0] !== 'M') {
            path2.splice(i, 0, ['M', a2.x, a2.y]);
            a1.bx = 0;
            a1.by = 0;
            a1.x = path1[i][1];
            a1.y = path1[i][2];
            ii = Math.max(p.length, (p2 && p2.length) || 0);
        }
    };
    ii = Math.max(p.length, (p2 && p2.length) || 0);
    for (var i = 0; i < ii; i++) {
        p[i] && (pfirst = p[i][0]); // save current path command
        if (pfirst !== 'C') {
            // C is not saved yet, because it may be result of conversion
            pcoms1[i] = pfirst; // Save current path command
            i && (pcom = pcoms1[i - 1]); // Get previous path command pcom
        }
        p[i] = processPath(p[i], attrs, pcom); // Previous path command is inputted to processPath
        if (pcoms1[i] !== 'A' && pfirst === 'C')
            pcoms1[i] = 'C'; // A is the only command
        // which may produce multiple C:s
        // so we have to make sure that C is also C in original path
        fixArc(p, i); // fixArc adds also the right amount of A:s to pcoms1
        if (p2) {
            // the same procedures is done to p2
            p2[i] && (pfirst = p2[i][0]);
            if (pfirst !== 'C') {
                pcoms2[i] = pfirst;
                i && (pcom = pcoms2[i - 1]);
            }
            p2[i] = processPath(p2[i], attrs2, pcom);
            if (pcoms2[i] !== 'A' && pfirst === 'C') {
                pcoms2[i] = 'C';
            }
            fixArc(p2, i);
        }
        fixM(p, p2, attrs, attrs2, i);
        fixM(p2, p, attrs2, attrs, i);
        var seg = p[i];
        var seg2 = p2 && p2[i];
        var seglen = seg.length;
        var seg2len = p2 && seg2.length;
        attrs.x = seg[seglen - 2];
        attrs.y = seg[seglen - 1];
        attrs.bx = parseFloat(seg[seglen - 4]) || attrs.x;
        attrs.by = parseFloat(seg[seglen - 3]) || attrs.y;
        attrs2.bx = p2 && (parseFloat(seg2[seg2len - 4]) || attrs2.x);
        attrs2.by = p2 && (parseFloat(seg2[seg2len - 3]) || attrs2.y);
        attrs2.x = p2 && seg2[seg2len - 2];
        attrs2.y = p2 && seg2[seg2len - 1];
    }
    return p2 ? [p, p2] : p;
};
exports.pathToCurve = pathToCurve;
var p2s = /,?([a-z]),?/gi;
var parsePathArray = function (path) {
    return path.join(',').replace(p2s, '$1');
};
exports.parsePathArray = parsePathArray;
var base3 = function (t, p1, p2, p3, p4) {
    var t1 = -3 * p1 + 9 * p2 - 9 * p3 + 3 * p4;
    var t2 = t * t1 + 6 * p1 - 12 * p2 + 6 * p3;
    return t * t2 - 3 * p1 + 3 * p2;
};
var bezlen = function (x1, y1, x2, y2, x3, y3, x4, y4, z) {
    if (z === null) {
        z = 1;
    }
    z = z > 1 ? 1 : z < 0 ? 0 : z;
    var z2 = z / 2;
    var n = 12;
    var Tvalues = [
        -0.1252, 0.1252, -0.3678, 0.3678, -0.5873, 0.5873, -0.7699, 0.7699, -0.9041, 0.9041, -0.9816, 0.9816,
    ];
    var Cvalues = [0.2491, 0.2491, 0.2335, 0.2335, 0.2032, 0.2032, 0.1601, 0.1601, 0.1069, 0.1069, 0.0472, 0.0472];
    var sum = 0;
    for (var i = 0; i < n; i++) {
        var ct = z2 * Tvalues[i] + z2;
        var xbase = base3(ct, x1, x2, x3, x4);
        var ybase = base3(ct, y1, y2, y3, y4);
        var comb = xbase * xbase + ybase * ybase;
        sum += Cvalues[i] * Math.sqrt(comb);
    }
    return z2 * sum;
};
var curveDim = function (x0, y0, x1, y1, x2, y2, x3, y3) {
    var tvalues = [];
    var bounds = [[], []];
    var a;
    var b;
    var c;
    var t;
    for (var i = 0; i < 2; ++i) {
        if (i === 0) {
            b = 6 * x0 - 12 * x1 + 6 * x2;
            a = -3 * x0 + 9 * x1 - 9 * x2 + 3 * x3;
            c = 3 * x1 - 3 * x0;
        }
        else {
            b = 6 * y0 - 12 * y1 + 6 * y2;
            a = -3 * y0 + 9 * y1 - 9 * y2 + 3 * y3;
            c = 3 * y1 - 3 * y0;
        }
        if (Math.abs(a) < 1e-12) {
            if (Math.abs(b) < 1e-12) {
                continue;
            }
            t = -c / b;
            if (t > 0 && t < 1) {
                tvalues.push(t);
            }
            continue;
        }
        var b2ac = b * b - 4 * c * a;
        var sqrtb2ac = Math.sqrt(b2ac);
        if (b2ac < 0) {
            continue;
        }
        var t1 = (-b + sqrtb2ac) / (2 * a);
        if (t1 > 0 && t1 < 1) {
            tvalues.push(t1);
        }
        var t2 = (-b - sqrtb2ac) / (2 * a);
        if (t2 > 0 && t2 < 1) {
            tvalues.push(t2);
        }
    }
    var j = tvalues.length;
    var jlen = j;
    var mt;
    while (j--) {
        t = tvalues[j];
        mt = 1 - t;
        bounds[0][j] = mt * mt * mt * x0 + 3 * mt * mt * t * x1 + 3 * mt * t * t * x2 + t * t * t * x3;
        bounds[1][j] = mt * mt * mt * y0 + 3 * mt * mt * t * y1 + 3 * mt * t * t * y2 + t * t * t * y3;
    }
    bounds[0][jlen] = x0;
    bounds[1][jlen] = y0;
    bounds[0][jlen + 1] = x3;
    bounds[1][jlen + 1] = y3;
    bounds[0].length = bounds[1].length = jlen + 2;
    return {
        min: {
            x: Math.min.apply(0, bounds[0]),
            y: Math.min.apply(0, bounds[1]),
        },
        max: {
            x: Math.max.apply(0, bounds[0]),
            y: Math.max.apply(0, bounds[1]),
        },
    };
};
var intersect = function (x1, y1, x2, y2, x3, y3, x4, y4) {
    if (Math.max(x1, x2) < Math.min(x3, x4) ||
        Math.min(x1, x2) > Math.max(x3, x4) ||
        Math.max(y1, y2) < Math.min(y3, y4) ||
        Math.min(y1, y2) > Math.max(y3, y4)) {
        return;
    }
    var nx = (x1 * y2 - y1 * x2) * (x3 - x4) - (x1 - x2) * (x3 * y4 - y3 * x4);
    var ny = (x1 * y2 - y1 * x2) * (y3 - y4) - (y1 - y2) * (x3 * y4 - y3 * x4);
    var denominator = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4);
    if (!denominator) {
        return;
    }
    var px = nx / denominator;
    var py = ny / denominator;
    var px2 = +px.toFixed(2);
    var py2 = +py.toFixed(2);
    if (px2 < +Math.min(x1, x2).toFixed(2) ||
        px2 > +Math.max(x1, x2).toFixed(2) ||
        px2 < +Math.min(x3, x4).toFixed(2) ||
        px2 > +Math.max(x3, x4).toFixed(2) ||
        py2 < +Math.min(y1, y2).toFixed(2) ||
        py2 > +Math.max(y1, y2).toFixed(2) ||
        py2 < +Math.min(y3, y4).toFixed(2) ||
        py2 > +Math.max(y3, y4).toFixed(2)) {
        return;
    }
    return {
        x: px,
        y: py,
    };
};
var isPointInsideBBox = function (bbox, x, y) {
    return x >= bbox.x && x <= bbox.x + bbox.width && y >= bbox.y && y <= bbox.y + bbox.height;
};
var rectPath = function (x, y, w, h, r) {
    if (r) {
        return [
            ['M', +x + +r, y],
            ['l', w - r * 2, 0],
            ['a', r, r, 0, 0, 1, r, r],
            ['l', 0, h - r * 2],
            ['a', r, r, 0, 0, 1, -r, r],
            ['l', r * 2 - w, 0],
            ['a', r, r, 0, 0, 1, -r, -r],
            ['l', 0, r * 2 - h],
            ['a', r, r, 0, 0, 1, r, -r],
            ['z'],
        ];
    }
    var res = [['M', x, y], ['l', w, 0], ['l', 0, h], ['l', -w, 0], ['z']];
    // @ts-ignore
    res.parsePathArray = parsePathArray;
    return res;
};
exports.rectPath = rectPath;
var box = function (x, y, width, height) {
    if (x === null) {
        x = y = width = height = 0;
    }
    if (y === null) {
        y = x.y;
        width = x.width;
        height = x.height;
        x = x.x;
    }
    return {
        x: x,
        y: y,
        width: width,
        w: width,
        height: height,
        h: height,
        x2: x + width,
        y2: y + height,
        cx: x + width / 2,
        cy: y + height / 2,
        r1: Math.min(width, height) / 2,
        r2: Math.max(width, height) / 2,
        r0: Math.sqrt(width * width + height * height) / 2,
        path: rectPath(x, y, width, height),
        vb: [x, y, width, height].join(' '),
    };
};
var isBBoxIntersect = function (bbox1, bbox2) {
    bbox1 = box(bbox1);
    bbox2 = box(bbox2);
    return (isPointInsideBBox(bbox2, bbox1.x, bbox1.y) ||
        isPointInsideBBox(bbox2, bbox1.x2, bbox1.y) ||
        isPointInsideBBox(bbox2, bbox1.x, bbox1.y2) ||
        isPointInsideBBox(bbox2, bbox1.x2, bbox1.y2) ||
        isPointInsideBBox(bbox1, bbox2.x, bbox2.y) ||
        isPointInsideBBox(bbox1, bbox2.x2, bbox2.y) ||
        isPointInsideBBox(bbox1, bbox2.x, bbox2.y2) ||
        isPointInsideBBox(bbox1, bbox2.x2, bbox2.y2) ||
        (((bbox1.x < bbox2.x2 && bbox1.x > bbox2.x) || (bbox2.x < bbox1.x2 && bbox2.x > bbox1.x)) &&
            ((bbox1.y < bbox2.y2 && bbox1.y > bbox2.y) || (bbox2.y < bbox1.y2 && bbox2.y > bbox1.y))));
};
var bezierBBox = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y) {
    if (!util_1.isArray(p1x)) {
        p1x = [p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y];
    }
    var bbox = curveDim.apply(null, p1x);
    return box(bbox.min.x, bbox.min.y, bbox.max.x - bbox.min.x, bbox.max.y - bbox.min.y);
};
var findDotsAtSegment = function (p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y, t) {
    var t1 = 1 - t;
    var t13 = Math.pow(t1, 3);
    var t12 = Math.pow(t1, 2);
    var t2 = t * t;
    var t3 = t2 * t;
    var x = t13 * p1x + t12 * 3 * t * c1x + t1 * 3 * t * t * c2x + t3 * p2x;
    var y = t13 * p1y + t12 * 3 * t * c1y + t1 * 3 * t * t * c2y + t3 * p2y;
    var mx = p1x + 2 * t * (c1x - p1x) + t2 * (c2x - 2 * c1x + p1x);
    var my = p1y + 2 * t * (c1y - p1y) + t2 * (c2y - 2 * c1y + p1y);
    var nx = c1x + 2 * t * (c2x - c1x) + t2 * (p2x - 2 * c2x + c1x);
    var ny = c1y + 2 * t * (c2y - c1y) + t2 * (p2y - 2 * c2y + c1y);
    var ax = t1 * p1x + t * c1x;
    var ay = t1 * p1y + t * c1y;
    var cx = t1 * c2x + t * p2x;
    var cy = t1 * c2y + t * p2y;
    var alpha = 90 - (Math.atan2(mx - nx, my - ny) * 180) / Math.PI;
    // (mx > nx || my < ny) && (alpha += 180);
    return {
        x: x,
        y: y,
        m: {
            x: mx,
            y: my,
        },
        n: {
            x: nx,
            y: ny,
        },
        start: {
            x: ax,
            y: ay,
        },
        end: {
            x: cx,
            y: cy,
        },
        alpha: alpha,
    };
};
var interHelper = function (bez1, bez2, justCount) {
    var bbox1 = bezierBBox(bez1);
    var bbox2 = bezierBBox(bez2);
    if (!isBBoxIntersect(bbox1, bbox2)) {
        return justCount ? 0 : [];
    }
    var l1 = bezlen.apply(0, bez1);
    var l2 = bezlen.apply(0, bez2);
    var n1 = ~~(l1 / 8);
    var n2 = ~~(l2 / 8);
    var dots1 = [];
    var dots2 = [];
    var xy = {};
    var res = justCount ? 0 : [];
    for (var i = 0; i < n1 + 1; i++) {
        var d = findDotsAtSegment.apply(0, bez1.concat(i / n1));
        dots1.push({
            x: d.x,
            y: d.y,
            t: i / n1,
        });
    }
    for (var i = 0; i < n2 + 1; i++) {
        var d = findDotsAtSegment.apply(0, bez2.concat(i / n2));
        dots2.push({
            x: d.x,
            y: d.y,
            t: i / n2,
        });
    }
    for (var i = 0; i < n1; i++) {
        for (var j = 0; j < n2; j++) {
            var di = dots1[i];
            var di1 = dots1[i + 1];
            var dj = dots2[j];
            var dj1 = dots2[j + 1];
            var ci = Math.abs(di1.x - di.x) < 0.001 ? 'y' : 'x';
            var cj = Math.abs(dj1.x - dj.x) < 0.001 ? 'y' : 'x';
            var is = intersect(di.x, di.y, di1.x, di1.y, dj.x, dj.y, dj1.x, dj1.y);
            if (is) {
                if (xy[is.x.toFixed(4)] === is.y.toFixed(4)) {
                    continue;
                }
                xy[is.x.toFixed(4)] = is.y.toFixed(4);
                var t1 = di.t + Math.abs((is[ci] - di[ci]) / (di1[ci] - di[ci])) * (di1.t - di.t);
                var t2 = dj.t + Math.abs((is[cj] - dj[cj]) / (dj1[cj] - dj[cj])) * (dj1.t - dj.t);
                if (t1 >= 0 && t1 <= 1 && t2 >= 0 && t2 <= 1) {
                    if (justCount) {
                        // @ts-ignore
                        res += 1;
                    }
                    else {
                        // @ts-ignore
                        res.push({
                            x: is.x,
                            y: is.y,
                            t1: t1,
                            t2: t2,
                        });
                    }
                }
            }
        }
    }
    return res;
};
var interPathHelper = function (path1, path2, justCount) {
    path1 = pathToCurve(path1);
    path2 = pathToCurve(path2);
    var x1;
    var y1;
    var x2;
    var y2;
    var x1m;
    var y1m;
    var x2m;
    var y2m;
    var bez1;
    var bez2;
    var res = justCount ? 0 : [];
    for (var i = 0, ii = path1.length; i < ii; i++) {
        var pi = path1[i];
        if (pi[0] === 'M') {
            x1 = x1m = pi[1];
            y1 = y1m = pi[2];
        }
        else {
            if (pi[0] === 'C') {
                bez1 = [x1, y1].concat(pi.slice(1));
                x1 = bez1[6];
                y1 = bez1[7];
            }
            else {
                bez1 = [x1, y1, x1, y1, x1m, y1m, x1m, y1m];
                x1 = x1m;
                y1 = y1m;
            }
            for (var j = 0, jj = path2.length; j < jj; j++) {
                var pj = path2[j];
                if (pj[0] === 'M') {
                    x2 = x2m = pj[1];
                    y2 = y2m = pj[2];
                }
                else {
                    if (pj[0] === 'C') {
                        bez2 = [x2, y2].concat(pj.slice(1));
                        x2 = bez2[6];
                        y2 = bez2[7];
                    }
                    else {
                        bez2 = [x2, y2, x2, y2, x2m, y2m, x2m, y2m];
                        x2 = x2m;
                        y2 = y2m;
                    }
                    var intr = interHelper(bez1, bez2, justCount);
                    if (justCount) {
                        // @ts-ignore
                        res += intr;
                    }
                    else {
                        // @ts-ignore
                        for (var k = 0, kk = intr.length; k < kk; k++) {
                            intr[k].segment1 = i;
                            intr[k].segment2 = j;
                            intr[k].bez1 = bez1;
                            intr[k].bez2 = bez2;
                        }
                        // @ts-ignore
                        res = res.concat(intr);
                    }
                }
            }
        }
    }
    return res;
};
var intersection = function (path1, path2) {
    return interPathHelper(path1, path2);
};
exports.intersection = intersection;
function decasteljau(points, t) {
    var left = [];
    var right = [];
    function recurse(points, t) {
        if (points.length === 1) {
            left.push(points[0]);
            right.push(points[0]);
        }
        else {
            var middlePoints = [];
            for (var i = 0; i < points.length - 1; i++) {
                if (i === 0) {
                    left.push(points[0]);
                }
                if (i === points.length - 2) {
                    right.push(points[i + 1]);
                }
                middlePoints[i] = [
                    (1 - t) * points[i][0] + t * points[i + 1][0],
                    (1 - t) * points[i][1] + t * points[i + 1][1],
                ];
            }
            recurse(middlePoints, t);
        }
    }
    if (points.length) {
        recurse(points, t);
    }
    return { left: left, right: right.reverse() };
}
function splitCurve(start, end, count) {
    var points = [[start[1], start[2]]];
    count = count || 2;
    var segments = [];
    if (end[0] === 'A') {
        points.push(end[6]);
        points.push(end[7]);
    }
    else if (end[0] === 'C') {
        points.push([end[1], end[2]]);
        points.push([end[3], end[4]]);
        points.push([end[5], end[6]]);
    }
    else if (end[0] === 'S' || end[0] === 'Q') {
        points.push([end[1], end[2]]);
        points.push([end[3], end[4]]);
    }
    else {
        points.push([end[1], end[2]]);
    }
    var leftSegments = points;
    var t = 1 / count;
    for (var i = 0; i < count - 1; i++) {
        var rt = t / (1 - t * i);
        var split = decasteljau(leftSegments, rt);
        segments.push(split.left);
        leftSegments = split.right;
    }
    segments.push(leftSegments);
    var result = segments.map(function (segment) {
        var cmd = [];
        if (segment.length === 4) {
            cmd.push('C');
            cmd = cmd.concat(segment[2]);
        }
        if (segment.length >= 3) {
            if (segment.length === 3) {
                cmd.push('Q');
            }
            cmd = cmd.concat(segment[1]);
        }
        if (segment.length === 2) {
            cmd.push('L');
        }
        cmd = cmd.concat(segment[segment.length - 1]);
        return cmd;
    });
    return result;
}
var splitSegment = function (start, end, count) {
    if (count === 1) {
        return [[].concat(start)];
    }
    var segments = [];
    if (end[0] === 'L' || end[0] === 'C' || end[0] === 'Q') {
        segments = segments.concat(splitCurve(start, end, count));
    }
    else {
        var temp = [].concat(start);
        if (temp[0] === 'M') {
            temp[0] = 'L';
        }
        for (var i = 0; i <= count - 1; i++) {
            segments.push(temp);
        }
    }
    return segments;
};
var fillPath = function (source, target) {
    if (source.length === 1) {
        return source;
    }
    var sourceLen = source.length - 1;
    var targetLen = target.length - 1;
    var ratio = sourceLen / targetLen;
    var segmentsToFill = [];
    if (source.length === 1 && source[0][0] === 'M') {
        for (var i = 0; i < targetLen - sourceLen; i++) {
            source.push(source[0]);
        }
        return source;
    }
    for (var i = 0; i < targetLen; i++) {
        var index = Math.floor(ratio * i);
        segmentsToFill[index] = (segmentsToFill[index] || 0) + 1;
    }
    var filled = segmentsToFill.reduce(function (filled, count, i) {
        if (i === sourceLen) {
            return filled.concat(source[sourceLen]);
        }
        return filled.concat(splitSegment(source[i], source[i + 1], count));
    }, []);
    filled.unshift(source[0]);
    if (target[targetLen] === 'Z' || target[targetLen] === 'z') {
        filled.push('Z');
    }
    return filled;
};
exports.fillPath = fillPath;
var isEqual = function (obj1, obj2) {
    if (obj1.length !== obj2.length) {
        return false;
    }
    var result = true;
    util_1.each(obj1, function (item, i) {
        if (item !== obj2[i]) {
            result = false;
            return false;
        }
    });
    return result;
};
function getMinDiff(del, add, modify) {
    var type = null;
    var min = modify;
    if (add < min) {
        min = add;
        type = 'add';
    }
    if (del < min) {
        min = del;
        type = 'del';
    }
    return {
        type: type,
        min: min,
    };
}
/*
 * https://en.wikipedia.org/wiki/Levenshtein_distance
 * 计算两条path的编辑距离
 */
var levenshteinDistance = function (source, target) {
    var sourceLen = source.length;
    var targetLen = target.length;
    var sourceSegment;
    var targetSegment;
    var temp = 0;
    if (sourceLen === 0 || targetLen === 0) {
        return null;
    }
    var dist = [];
    for (var i = 0; i <= sourceLen; i++) {
        dist[i] = [];
        dist[i][0] = { min: i };
    }
    for (var j = 0; j <= targetLen; j++) {
        dist[0][j] = { min: j };
    }
    for (var i = 1; i <= sourceLen; i++) {
        sourceSegment = source[i - 1];
        for (var j = 1; j <= targetLen; j++) {
            targetSegment = target[j - 1];
            if (isEqual(sourceSegment, targetSegment)) {
                temp = 0;
            }
            else {
                temp = 1;
            }
            var del = dist[i - 1][j].min + 1;
            var add = dist[i][j - 1].min + 1;
            var modify = dist[i - 1][j - 1].min + temp;
            dist[i][j] = getMinDiff(del, add, modify);
        }
    }
    return dist;
};
var fillPathByDiff = function (source, target) {
    var diffMatrix = levenshteinDistance(source, target);
    var sourceLen = source.length;
    var targetLen = target.length;
    var changes = [];
    var index = 1;
    var minPos = 1;
    // 如果source和target不是完全不相等
    if (diffMatrix[sourceLen][targetLen].min !== sourceLen) {
        // 获取从source到target所需改动
        for (var i = 1; i <= sourceLen; i++) {
            var min = diffMatrix[i][i].min;
            minPos = i;
            for (var j = index; j <= targetLen; j++) {
                if (diffMatrix[i][j].min < min) {
                    min = diffMatrix[i][j].min;
                    minPos = j;
                }
            }
            index = minPos;
            if (diffMatrix[i][index].type) {
                changes.push({ index: i - 1, type: diffMatrix[i][index].type });
            }
        }
        // 对source进行增删path
        for (var i = changes.length - 1; i >= 0; i--) {
            index = changes[i].index;
            if (changes[i].type === 'add') {
                source.splice(index, 0, [].concat(source[index]));
            }
            else {
                source.splice(index, 1);
            }
        }
    }
    // source尾部补齐
    sourceLen = source.length;
    var diff = targetLen - sourceLen;
    if (sourceLen < targetLen) {
        for (var i = 0; i < diff; i++) {
            if (source[sourceLen - 1][0] === 'z' || source[sourceLen - 1][0] === 'Z') {
                source.splice(sourceLen - 2, 0, source[sourceLen - 2]);
            }
            else {
                source.push(source[sourceLen - 1]);
            }
            sourceLen += 1;
        }
    }
    return source;
};
exports.fillPathByDiff = fillPathByDiff;
// 将两个点均分成count个点
function _splitPoints(points, former, count) {
    var result = [].concat(points);
    var index;
    var t = 1 / (count + 1);
    var formerEnd = _getSegmentPoints(former)[0];
    for (var i = 1; i <= count; i++) {
        t *= i;
        index = Math.floor(points.length * t);
        if (index === 0) {
            result.unshift([formerEnd[0] * t + points[index][0] * (1 - t), formerEnd[1] * t + points[index][1] * (1 - t)]);
        }
        else {
            result.splice(index, 0, [
                formerEnd[0] * t + points[index][0] * (1 - t),
                formerEnd[1] * t + points[index][1] * (1 - t),
            ]);
        }
    }
    return result;
}
/*
 * 抽取pathSegment中的关键点
 * M,L,A,Q,H,V一个端点
 * Q, S抽取一个端点，一个控制点
 * C抽取一个端点，两个控制点
 */
function _getSegmentPoints(segment) {
    var points = [];
    switch (segment[0]) {
        case 'M':
            points.push([segment[1], segment[2]]);
            break;
        case 'L':
            points.push([segment[1], segment[2]]);
            break;
        case 'A':
            points.push([segment[6], segment[7]]);
            break;
        case 'Q':
            points.push([segment[3], segment[4]]);
            points.push([segment[1], segment[2]]);
            break;
        case 'T':
            points.push([segment[1], segment[2]]);
            break;
        case 'C':
            points.push([segment[5], segment[6]]);
            points.push([segment[1], segment[2]]);
            points.push([segment[3], segment[4]]);
            break;
        case 'S':
            points.push([segment[3], segment[4]]);
            points.push([segment[1], segment[2]]);
            break;
        case 'H':
            points.push([segment[1], segment[1]]);
            break;
        case 'V':
            points.push([segment[1], segment[1]]);
            break;
        default:
    }
    return points;
}
var formatPath = function (fromPath, toPath) {
    if (fromPath.length <= 1) {
        return fromPath;
    }
    var points;
    for (var i = 0; i < toPath.length; i++) {
        if (fromPath[i][0] !== toPath[i][0]) {
            // 获取fromPath的pathSegment的端点，根据toPath的指令对其改造
            points = _getSegmentPoints(fromPath[i]);
            switch (toPath[i][0]) {
                case 'M':
                    fromPath[i] = ['M'].concat(points[0]);
                    break;
                case 'L':
                    fromPath[i] = ['L'].concat(points[0]);
                    break;
                case 'A':
                    fromPath[i] = [].concat(toPath[i]);
                    fromPath[i][6] = points[0][0];
                    fromPath[i][7] = points[0][1];
                    break;
                case 'Q':
                    if (points.length < 2) {
                        if (i > 0) {
                            points = _splitPoints(points, fromPath[i - 1], 1);
                        }
                        else {
                            fromPath[i] = toPath[i];
                            break;
                        }
                    }
                    fromPath[i] = ['Q'].concat(points.reduce(function (arr, i) {
                        return arr.concat(i);
                    }, []));
                    break;
                case 'T':
                    fromPath[i] = ['T'].concat(points[0]);
                    break;
                case 'C':
                    if (points.length < 3) {
                        if (i > 0) {
                            points = _splitPoints(points, fromPath[i - 1], 2);
                        }
                        else {
                            fromPath[i] = toPath[i];
                            break;
                        }
                    }
                    fromPath[i] = ['C'].concat(points.reduce(function (arr, i) {
                        return arr.concat(i);
                    }, []));
                    break;
                case 'S':
                    if (points.length < 2) {
                        if (i > 0) {
                            points = _splitPoints(points, fromPath[i - 1], 1);
                        }
                        else {
                            fromPath[i] = toPath[i];
                            break;
                        }
                    }
                    fromPath[i] = ['S'].concat(points.reduce(function (arr, i) {
                        return arr.concat(i);
                    }, []));
                    break;
                default:
                    fromPath[i] = toPath[i];
            }
        }
    }
    return fromPath;
};
exports.formatPath = formatPath;
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