const labelPadding =
          Math.tan(angle) < this._label.offsetHeight / this._label.offsetWidth
            ? this._label.offsetWidth / 2 / Math.cos(angle) + 15 // 5px for each handle + padding
            : this._label.offsetHeight / 2 / Math.cos(Math.PI / 2 - angle) + 15,
        paddingVector = lineData.line.normalize().multiplyScalar(labelPadding),