function svgPaths() {
let string = '';
const largeArcFlag = largeArc ? 1 : 0;
const sweepFlag = sweepDirection ? 1 : 0;
for (let i = 0; i < n; ++i) {
string += ` <path d="M ${p[i].x} ${p[i].y} `;
string += `A ${r3+r0} ${r3+r0} 0 ${largeArcFlag} ${sweepFlag} ${p[(i + 2) % n].x} ${p[(i + 2) % n].y} `;
string += '" stroke-width="2" fill="none" stroke="black"/>\n';
}
return string;
}