On 07/12/2013 09:18 AM, jceddy wrote:
>........

Where you are intersecting the infinite cylinder function with the built 
in rounded box function, I would recommend avoiding 0 rounding for the 
corners. In my experience f_rounded_box performance is an order of 
magnitude or more faster when even a little (0.02) rounding is specified.

You'd need to adjust the intersection f_rounded_box x and z scaling by 
adding the rounding used else the rounded corners show up in the 
resulting shape.

max(sqrt(pow(_x,2) + pow(_z,2)) - _rad, \
     f_rounded_box(_x, _y, _z, 0, _rad+rd,_len/2, _rad+rd))

Thinking aloud: I'm guessing others responding recommended subtracting 
the crackle function instead of adding because in subtracting any 
function returning values >=0, the shape is made larger. In other words, 
using subtraction here removes any chance the addition of the crackle 
shrinks the shape, or parts of it, to nothing.

Bill P.

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