message: Fix rounded rectangle with zero radius
diff: @@ -72,6 +72,17 @@ export const buildCircle: IShapeBuildCommand = {
  return;
  }
  + if (n === 0)
  + {
  + points.length = 8;
  + points[0] = points[6] = x + dx;
  + points[1] = points[3] = y + dy;
  + points[2] = points[4] = x - dx;
  + points[5] = points[7] = y - dy;
  +
  + return;
  + }
  +
  let j1 = 0;
  let j2 = (n * 4) + (dx ? 2 : 0) + 2;
  let j3 = j2;
  