Hello Philippe,
As for patterns, Ldraw Pattern Creator is probably the tool to use nowadays. I personnally use mostly Quad2dat because I'm accustomed to it. I you want to try it I can send it to you (send me an email, philo_AT_philohome.com).
For shape creation, I've created a few specialized tools, have a look here.
As for patterns, Ldraw Pattern Creator is probably the tool to use nowadays. I personnally use mostly Quad2dat because I'm accustomed to it. I you want to try it I can send it to you (send me an email, philo_AT_philohome.com).
For shape creation, I've created a few specialized tools, have a look here.