## Thank you for sending a Pull Request to the VCGLib! 

VCGLib is fully owned by CNR, and all the VCGLib contributors that do not work at the VCLab of CNR must first sign the contributor license agreement that you can find at the following link: https://github.com/cnr-isti-vclab/vcglib/blob/devel/docs/ContributorLicenseAgreement.pdf

If you will sign the CLA, then we will be able to merge your pull request after reviewing it.
Please send the signed document to muntoni.alessandro@gmail.com and paolo.cignoni@isti.cnr.it .
If you will not sign the CLA, we will review and then apply your changes as soon as possible.

Before opening the PR, please leave the follwing form with a check for your particluar case:

##### Check with `[x]` what is your case:
- [ ] I already signed and sent via email the CLA;
- [ ] I wil sign and send the CLA via email as soon as possible;
- [ ] I don't want to sign the CLA.