Mix 2 vases

[bochatay]

Duplicate the parameters (except those in general box). This will make 2 temporary vases (vase1 and vase2)
Then mix the two vases with a function that distributes the percentage of each vase according to the height.
The fonction could be linear (vase1 = 100% at bottom, vase2=100% at top) or a sinus or something else.
The mixing fonction could work according to the periphery too.