message: Remove needless `Number()` call (on dev branch)
  More detail see
diff: @@ -93,12 +93,12 @@ export default class Rope extends Mesh
  const textureUvs = this._texture._uvs;
  const offset = new core.Point(textureUvs.x0, textureUvs.y0);
  - const factor = new core.Point(textureUvs.x2 - textureUvs.x0, textureUvs.y2 - textureUvs.y0);
  + const factor = new core.Point(textureUvs.x2 - textureUvs.x0, Number(textureUvs.y2 - textureUvs.y0));
  uvs[0] = 0 + offset.x;
  uvs[1] = 0 + offset.y;
  uvs[2] = 0 + offset.x;
  - uvs[3] = Number(factor.y) + offset.y;
  + uvs[3] = factor.y + offset.y;
  colors[0] = 1;
  colors[1] = 1;
  @@ -118,7 +118,7 @@ export default class Rope extends Mesh
  uvs[index + 1] = 0 + offset.y;
  uvs[index + 2] = (amount * factor.x) + offset.x;
  - uvs[index + 3] = Number(factor.y) + offset.y;
  + uvs[index + 3] = factor.y + offset.y;
  index = i * 2;
  colors[index] = 1;
  