Scripts which are used to create loading animation

lines.js

create = (r, r2, cx, cy, className) => {
  str = '';
  for(let _angle = 0; _angle < 360; _angle += 30){
    angle = _angle * Math.PI / 180;
    let cos = Math.cos(angle);
    let sin = Math.sin(angle);
    str += `<line x1="${Math.round(cx + cos * r)}" y1="${Math.round(cy + sin * r)}" x2="${Math.round(cx + cos * r2)}" y2="${Math.round(cy + sin * r2)}" class="line-outer ${className}"/>\n`;
  }
  console.log(str);
}