First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/path-data-parser/lib/absolutize.d.ts

@@ -0,0 +1,2 @@
+import { Segment } from './parser.js';
+export declare function absolutize(segments: Segment[]): Segment[];

client/node_modules/path-data-parser/lib/absolutize.js

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+// Translate relative commands to absolute commands
+export function absolutize(segments) {
+    let cx = 0, cy = 0;
+    let subx = 0, suby = 0;
+    const out = [];
+    for (const { key, data } of segments) {
+        switch (key) {
+            case 'M':
+                out.push({ key: 'M', data: [...data] });
+                [cx, cy] = data;
+                [subx, suby] = data;
+                break;
+            case 'm':
+                cx += data[0];
+                cy += data[1];
+                out.push({ key: 'M', data: [cx, cy] });
+                subx = cx;
+                suby = cy;
+                break;
+            case 'L':
+                out.push({ key: 'L', data: [...data] });
+                [cx, cy] = data;
+                break;
+            case 'l':
+                cx += data[0];
+                cy += data[1];
+                out.push({ key: 'L', data: [cx, cy] });
+                break;
+            case 'C':
+                out.push({ key: 'C', data: [...data] });
+                cx = data[4];
+                cy = data[5];
+                break;
+            case 'c': {
+                const newdata = data.map((d, i) => (i % 2) ? (d + cy) : (d + cx));
+                out.push({ key: 'C', data: newdata });
+                cx = newdata[4];
+                cy = newdata[5];
+                break;
+            }
+            case 'Q':
+                out.push({ key: 'Q', data: [...data] });
+                cx = data[2];
+                cy = data[3];
+                break;
+            case 'q': {
+                const newdata = data.map((d, i) => (i % 2) ? (d + cy) : (d + cx));
+                out.push({ key: 'Q', data: newdata });
+                cx = newdata[2];
+                cy = newdata[3];
+                break;
+            }
+            case 'A':
+                out.push({ key: 'A', data: [...data] });
+                cx = data[5];
+                cy = data[6];
+                break;
+            case 'a':
+                cx += data[5];
+                cy += data[6];
+                out.push({ key: 'A', data: [data[0], data[1], data[2], data[3], data[4], cx, cy] });
+                break;
+            case 'H':
+                out.push({ key: 'H', data: [...data] });
+                cx = data[0];
+                break;
+            case 'h':
+                cx += data[0];
+                out.push({ key: 'H', data: [cx] });
+                break;
+            case 'V':
+                out.push({ key: 'V', data: [...data] });
+                cy = data[0];
+                break;
+            case 'v':
+                cy += data[0];
+                out.push({ key: 'V', data: [cy] });
+                break;
+            case 'S':
+                out.push({ key: 'S', data: [...data] });
+                cx = data[2];
+                cy = data[3];
+                break;
+            case 's': {
+                const newdata = data.map((d, i) => (i % 2) ? (d + cy) : (d + cx));
+                out.push({ key: 'S', data: newdata });
+                cx = newdata[2];
+                cy = newdata[3];
+                break;
+            }
+            case 'T':
+                out.push({ key: 'T', data: [...data] });
+                cx = data[0];
+                cy = data[1];
+                break;
+            case 't':
+                cx += data[0];
+                cy += data[1];
+                out.push({ key: 'T', data: [cx, cy] });
+                break;
+            case 'Z':
+            case 'z':
+                out.push({ key: 'Z', data: [] });
+                cx = subx;
+                cy = suby;
+                break;
+        }
+    }
+    return out;
+}

client/node_modules/path-data-parser/lib/index.d.ts

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+export { parsePath, serialize } from './parser.js';
+export { absolutize } from './absolutize.js';
+export { normalize } from './normalize.js';

client/node_modules/path-data-parser/lib/index.js

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+export { parsePath, serialize } from './parser.js';
+export { absolutize } from './absolutize.js';
+export { normalize } from './normalize.js';

client/node_modules/path-data-parser/lib/normalize.d.ts

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+import { Segment } from './parser.js';
+export declare function normalize(segments: Segment[]): Segment[];

client/node_modules/path-data-parser/lib/normalize.js

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+// Normalize path to include only M, L, C, and Z commands
+export function normalize(segments) {
+    const out = [];
+    let lastType = '';
+    let cx = 0, cy = 0;
+    let subx = 0, suby = 0;
+    let lcx = 0, lcy = 0;
+    for (const { key, data } of segments) {
+        switch (key) {
+            case 'M':
+                out.push({ key: 'M', data: [...data] });
+                [cx, cy] = data;
+                [subx, suby] = data;
+                break;
+            case 'C':
+                out.push({ key: 'C', data: [...data] });
+                cx = data[4];
+                cy = data[5];
+                lcx = data[2];
+                lcy = data[3];
+                break;
+            case 'L':
+                out.push({ key: 'L', data: [...data] });
+                [cx, cy] = data;
+                break;
+            case 'H':
+                cx = data[0];
+                out.push({ key: 'L', data: [cx, cy] });
+                break;
+            case 'V':
+                cy = data[0];
+                out.push({ key: 'L', data: [cx, cy] });
+                break;
+            case 'S': {
+                let cx1 = 0, cy1 = 0;
+                if (lastType === 'C' || lastType === 'S') {
+                    cx1 = cx + (cx - lcx);
+                    cy1 = cy + (cy - lcy);
+                }
+                else {
+                    cx1 = cx;
+                    cy1 = cy;
+                }
+                out.push({ key: 'C', data: [cx1, cy1, ...data] });
+                lcx = data[0];
+                lcy = data[1];
+                cx = data[2];
+                cy = data[3];
+                break;
+            }
+            case 'T': {
+                const [x, y] = data;
+                let x1 = 0, y1 = 0;
+                if (lastType === 'Q' || lastType === 'T') {
+                    x1 = cx + (cx - lcx);
+                    y1 = cy + (cy - lcy);
+                }
+                else {
+                    x1 = cx;
+                    y1 = cy;
+                }
+                const cx1 = cx + 2 * (x1 - cx) / 3;
+                const cy1 = cy + 2 * (y1 - cy) / 3;
+                const cx2 = x + 2 * (x1 - x) / 3;
+                const cy2 = y + 2 * (y1 - y) / 3;
+                out.push({ key: 'C', data: [cx1, cy1, cx2, cy2, x, y] });
+                lcx = x1;
+                lcy = y1;
+                cx = x;
+                cy = y;
+                break;
+            }
+            case 'Q': {
+                const [x1, y1, x, y] = data;
+                const cx1 = cx + 2 * (x1 - cx) / 3;
+                const cy1 = cy + 2 * (y1 - cy) / 3;
+                const cx2 = x + 2 * (x1 - x) / 3;
+                const cy2 = y + 2 * (y1 - y) / 3;
+                out.push({ key: 'C', data: [cx1, cy1, cx2, cy2, x, y] });
+                lcx = x1;
+                lcy = y1;
+                cx = x;
+                cy = y;
+                break;
+            }
+            case 'A': {
+                const r1 = Math.abs(data[0]);
+                const r2 = Math.abs(data[1]);
+                const angle = data[2];
+                const largeArcFlag = data[3];
+                const sweepFlag = data[4];
+                const x = data[5];
+                const y = data[6];
+                if (r1 === 0 || r2 === 0) {
+                    out.push({ key: 'C', data: [cx, cy, x, y, x, y] });
+                    cx = x;
+                    cy = y;
+                }
+                else {
+                    if (cx !== x || cy !== y) {
+                        const curves = arcToCubicCurves(cx, cy, x, y, r1, r2, angle, largeArcFlag, sweepFlag);
+                        curves.forEach(function (curve) {
+                            out.push({ key: 'C', data: curve });
+                        });
+                        cx = x;
+                        cy = y;
+                    }
+                }
+                break;
+            }
+            case 'Z':
+                out.push({ key: 'Z', data: [] });
+                cx = subx;
+                cy = suby;
+                break;
+        }
+        lastType = key;
+    }
+    return out;
+}
+function degToRad(degrees) {
+    return (Math.PI * degrees) / 180;
+}
+function rotate(x, y, angleRad) {
+    const X = x * Math.cos(angleRad) - y * Math.sin(angleRad);
+    const Y = x * Math.sin(angleRad) + y * Math.cos(angleRad);
+    return [X, Y];
+}
+function arcToCubicCurves(x1, y1, x2, y2, r1, r2, angle, largeArcFlag, sweepFlag, recursive) {
+    const angleRad = degToRad(angle);
+    let params = [];
+    let f1 = 0, f2 = 0, cx = 0, cy = 0;
+    if (recursive) {
+        [f1, f2, cx, cy] = recursive;
+    }
+    else {
+        [x1, y1] = rotate(x1, y1, -angleRad);
+        [x2, y2] = rotate(x2, y2, -angleRad);
+        const x = (x1 - x2) / 2;
+        const y = (y1 - y2) / 2;
+        let h = (x * x) / (r1 * r1) + (y * y) / (r2 * r2);
+        if (h > 1) {
+            h = Math.sqrt(h);
+            r1 = h * r1;
+            r2 = h * r2;
+        }
+        const sign = (largeArcFlag === sweepFlag) ? -1 : 1;
+        const r1Pow = r1 * r1;
+        const r2Pow = r2 * r2;
+        const left = r1Pow * r2Pow - r1Pow * y * y - r2Pow * x * x;
+        const right = r1Pow * y * y + r2Pow * x * x;
+        const k = sign * Math.sqrt(Math.abs(left / right));
+        cx = k * r1 * y / r2 + (x1 + x2) / 2;
+        cy = k * -r2 * x / r1 + (y1 + y2) / 2;
+        f1 = Math.asin(parseFloat(((y1 - cy) / r2).toFixed(9)));
+        f2 = Math.asin(parseFloat(((y2 - cy) / r2).toFixed(9)));
+        if (x1 < cx) {
+            f1 = Math.PI - f1;
+        }
+        if (x2 < cx) {
+            f2 = Math.PI - f2;
+        }
+        if (f1 < 0) {
+            f1 = Math.PI * 2 + f1;
+        }
+        if (f2 < 0) {
+            f2 = Math.PI * 2 + f2;
+        }
+        if (sweepFlag && f1 > f2) {
+            f1 = f1 - Math.PI * 2;
+        }
+        if (!sweepFlag && f2 > f1) {
+            f2 = f2 - Math.PI * 2;
+        }
+    }
+    let df = f2 - f1;
+    if (Math.abs(df) > (Math.PI * 120 / 180)) {
+        const f2old = f2;
+        const x2old = x2;
+        const y2old = y2;
+        if (sweepFlag && f2 > f1) {
+            f2 = f1 + (Math.PI * 120 / 180) * (1);
+        }
+        else {
+            f2 = f1 + (Math.PI * 120 / 180) * (-1);
+        }
+        x2 = cx + r1 * Math.cos(f2);
+        y2 = cy + r2 * Math.sin(f2);
+        params = arcToCubicCurves(x2, y2, x2old, y2old, r1, r2, angle, 0, sweepFlag, [f2, f2old, cx, cy]);
+    }
+    df = f2 - f1;
+    const c1 = Math.cos(f1);
+    const s1 = Math.sin(f1);
+    const c2 = Math.cos(f2);
+    const s2 = Math.sin(f2);
+    const t = Math.tan(df / 4);
+    const hx = 4 / 3 * r1 * t;
+    const hy = 4 / 3 * r2 * t;
+    const m1 = [x1, y1];
+    const m2 = [x1 + hx * s1, y1 - hy * c1];
+    const m3 = [x2 + hx * s2, y2 - hy * c2];
+    const m4 = [x2, y2];
+    m2[0] = 2 * m1[0] - m2[0];
+    m2[1] = 2 * m1[1] - m2[1];
+    if (recursive) {
+        return [m2, m3, m4].concat(params);
+    }
+    else {
+        params = [m2, m3, m4].concat(params);
+        const curves = [];
+        for (let i = 0; i < params.length; i += 3) {
+            const r1 = rotate(params[i][0], params[i][1], angleRad);
+            const r2 = rotate(params[i + 1][0], params[i + 1][1], angleRad);
+            const r3 = rotate(params[i + 2][0], params[i + 2][1], angleRad);
+            curves.push([r1[0], r1[1], r2[0], r2[1], r3[0], r3[1]]);
+        }
+        return curves;
+    }
+}

client/node_modules/path-data-parser/lib/parser.d.ts

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+export interface Segment {
+    key: string;
+    data: number[];
+}
+export declare function parsePath(d: string): Segment[];
+export declare function serialize(segments: Segment[]): string;

client/node_modules/path-data-parser/lib/parser.js

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+const COMMAND = 0;
+const NUMBER = 1;
+const EOD = 2;
+const PARAMS = { A: 7, a: 7, C: 6, c: 6, H: 1, h: 1, L: 2, l: 2, M: 2, m: 2, Q: 4, q: 4, S: 4, s: 4, T: 2, t: 2, V: 1, v: 1, Z: 0, z: 0 };
+function tokenize(d) {
+    const tokens = new Array();
+    while (d !== '') {
+        if (d.match(/^([ \t\r\n,]+)/)) {
+            d = d.substr(RegExp.$1.length);
+        }
+        else if (d.match(/^([aAcChHlLmMqQsStTvVzZ])/)) {
+            tokens[tokens.length] = { type: COMMAND, text: RegExp.$1 };
+            d = d.substr(RegExp.$1.length);
+        }
+        else if (d.match(/^(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)/)) {
+            tokens[tokens.length] = { type: NUMBER, text: `${parseFloat(RegExp.$1)}` };
+            d = d.substr(RegExp.$1.length);
+        }
+        else {
+            return [];
+        }
+    }
+    tokens[tokens.length] = { type: EOD, text: '' };
+    return tokens;
+}
+function isType(token, type) {
+    return token.type === type;
+}
+export function parsePath(d) {
+    const segments = [];
+    const tokens = tokenize(d);
+    let mode = 'BOD';
+    let index = 0;
+    let token = tokens[index];
+    while (!isType(token, EOD)) {
+        let paramsCount = 0;
+        const params = [];
+        if (mode === 'BOD') {
+            if (token.text === 'M' || token.text === 'm') {
+                index++;
+                paramsCount = PARAMS[token.text];
+                mode = token.text;
+            }
+            else {
+                return parsePath('M0,0' + d);
+            }
+        }
+        else if (isType(token, NUMBER)) {
+            paramsCount = PARAMS[mode];
+        }
+        else {
+            index++;
+            paramsCount = PARAMS[token.text];
+            mode = token.text;
+        }
+        if ((index + paramsCount) < tokens.length) {
+            for (let i = index; i < index + paramsCount; i++) {
+                const numbeToken = tokens[i];
+                if (isType(numbeToken, NUMBER)) {
+                    params[params.length] = +numbeToken.text;
+                }
+                else {
+                    throw new Error('Param not a number: ' + mode + ',' + numbeToken.text);
+                }
+            }
+            if (typeof PARAMS[mode] === 'number') {
+                const segment = { key: mode, data: params };
+                segments.push(segment);
+                index += paramsCount;
+                token = tokens[index];
+                if (mode === 'M')
+                    mode = 'L';
+                if (mode === 'm')
+                    mode = 'l';
+            }
+            else {
+                throw new Error('Bad segment: ' + mode);
+            }
+        }
+        else {
+            throw new Error('Path data ended short');
+        }
+    }
+    return segments;
+}
+export function serialize(segments) {
+    const tokens = [];
+    for (const { key, data } of segments) {
+        tokens.push(key);
+        switch (key) {
+            case 'C':
+            case 'c':
+                tokens.push(data[0], `${data[1]},`, data[2], `${data[3]},`, data[4], data[5]);
+                break;
+            case 'S':
+            case 's':
+            case 'Q':
+            case 'q':
+                tokens.push(data[0], `${data[1]},`, data[2], data[3]);
+                break;
+            default:
+                tokens.push(...data);
+                break;
+        }
+    }
+    return tokens.join(' ');
+}