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svgo.config.cjs
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svgo.config.cjs
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const { stringifyPathData } = require("svgo/lib/path.js");
module.exports = {
multipass: true,
plugins: [
{
name: "preset-default",
params: {
overrides: {
removeViewBox: false,
cleanupIds: {
force: true,
},
inlineStyles: {
onlyMatchedOnce: false,
},
},
},
},
{
name: "convertStyleToAttrs",
},
{
name: "removeAttrs",
params: {
attrs: ["xml:space", "data-name", "class", "*^rx|ry^0"],
elemSeparator: "^",
},
},
{
name: "fixZ",
fn: (ast, params) => ({
element: { enter: enterElement },
}),
},
],
};
const enterElement = (element) => {
if (!element.pathJS) return;
/** @type {any[]} */
const path = element.pathJS;
let start = [0, 0];
let cursor = [0, 0];
for (let i = 0; i < path.length; i += 1) {
const pathItem = path[i];
pathItem.base = [...cursor];
let { command, args } = pathItem;
// moveto (x y)
if (command === "m") {
cursor[0] += args[0];
cursor[1] += args[1];
start[0] = cursor[0];
start[1] = cursor[1];
}
if (command === "M") {
cursor[0] = args[0];
cursor[1] = args[1];
start[0] = cursor[0];
start[1] = cursor[1];
}
// lineto (x y)
if (command === "l") {
cursor[0] += args[0];
cursor[1] += args[1];
}
if (command === "L") {
cursor[0] = args[0];
cursor[1] = args[1];
}
if (command === "l" || command === "L") {
if (start[0] == cursor[0] && start[1] == cursor[1])
path[i] = { command: "z", args: [] };
}
// horizontal lineto (x)
if (command === "h") {
cursor[0] += args[0];
}
if (command === "H") {
cursor[0] = args[0];
}
// vertical lineto (y)
if (command === "v") {
cursor[1] += args[0];
}
if (command === "V") {
cursor[1] = args[0];
}
// curveto (x1 y1 x2 y2 x y)
if (command === "c") {
cursor[0] += args[4];
cursor[1] += args[5];
}
if (command === "C") {
cursor[0] = args[4];
cursor[1] = args[5];
}
// smooth curveto (x2 y2 x y)
if (command === "s") {
cursor[0] += args[2];
cursor[1] += args[3];
}
if (command === "S") {
cursor[0] = args[2];
cursor[1] = args[3];
}
// quadratic Bézier curveto (x1 y1 x y)
if (command === "q") {
cursor[0] += args[2];
cursor[1] += args[3];
}
if (command === "Q") {
cursor[0] = args[2];
cursor[1] = args[3];
}
// smooth quadratic Bézier curveto (x y)
if (command === "t") {
cursor[0] += args[0];
cursor[1] += args[1];
}
if (command === "T") {
cursor[0] = args[0];
cursor[1] = args[1];
}
// elliptical arc (rx ry x-axis-rotation large-arc-flag sweep-flag x y)
if (command === "a") {
cursor[0] += args[5];
cursor[1] += args[6];
}
if (command === "A") {
cursor[0] = args[5];
cursor[1] = args[6];
}
const back1 = path[i - 1];
if (
back1 &&
(command === "a" || command === "A") &&
(back1.command === "a" || back1.command === "A")
) {
const { args: argsO } = back1;
const start = back1.base;
const midway = pathItem.base;
const end = cursor;
const diff1 = args[0] - argsO[0];
const diff2 = args[1] - argsO[1];
if (diff1 == 0 && diff2 == 0 || (args[0] > 1 && args[1] > 1 && diff1 > -.1 && diff1 < .1 && diff2 > -.1 && diff2 < .1)) {
const oldACenter = getArcCenter(start, midway, argsO.slice(0, 5));
const oldBCenter = getArcCenter(midway, end, args.slice(0, 5));
const newCenter = getArcCenter(start, end, args.slice(0, 5));
const diffA = Math.sqrt(
Math.pow(newCenter[0] - oldACenter[0], 2) +
Math.pow(newCenter[1] - oldACenter[1], 2)
)
const diffB = Math.sqrt(
Math.pow(newCenter[0] - oldBCenter[0], 2) +
Math.pow(newCenter[1] - oldBCenter[1], 2)
)
if (diffA + diffB < 0.2) {
path.splice(i, 1)
i -= 1;
path[i] = {
...path[i],
base: start,
command: "A",
args: [args[0], args[1], args[2], args[3], args[4], cursor[0], cursor[1]],
}
}
}
}
// closepath
if (command === "Z" || command === "z") {
// reset cursor
cursor[0] = start[0];
cursor[1] = start[1];
}
}
element.attributes.d = stringifyPathData({
pathData: element.pathJS,
});
};
const getArcCenter = (
[px, py],
[cx, cy],
[rx, ry, xAxisRotation, largeArcFlag, sweepFlag]
) => {
const sinphi = Math.sin((xAxisRotation * Math.PI * 2) / 360);
const cosphi = Math.cos((xAxisRotation * Math.PI * 2) / 360);
const pxp = (cosphi * (px - cx)) / 2 + (sinphi * (py - cy)) / 2;
const pyp = (-sinphi * (px - cx)) / 2 + (cosphi * (py - cy)) / 2;
const rxsq = Math.pow(rx, 2);
const rysq = Math.pow(ry, 2);
const pxpsq = Math.pow(pxp, 2);
const pypsq = Math.pow(pyp, 2);
let rad = rxsq * rysq - rxsq * pypsq - rysq * pxpsq;
if (rad < 0) {
rad = 0;
}
rad /= rxsq * pypsq + rysq * pxpsq;
rad = Math.sqrt(rad) * (largeArcFlag === sweepFlag ? -1 : 1);
const centerxp = ((rad * rx) / ry) * pyp;
const centeryp = ((rad * -ry) / rx) * pxp;
return [
cosphi * centerxp - sinphi * centeryp + (px + cx) / 2,
sinphi * centerxp + cosphi * centeryp + (py + cy) / 2,
];
};