Hi Noah,
the meshes computed by Grasshopper are very coarse. I need to keep the
settings low because a lot of meshing has to happen pretty much in
real-time. Once I'm comfortable running the mesher in a thread, I can
progressively increase mesh quality without affecting the response
time of the Grasshopper interface.
Gaudi columns are actually region booleans of multiple curves, they
have sharp edges in some sections, yet are completely smooth in others
where the regions start to overlap. At any rate, you need to create a
set of components which makes cross sections.
If you want to wrap a Sine function around a curve, and you're
comfortable using mathematics then making an expression is easiest:
Point = {Origin.X + Radius * Cos(a) + SmallRadius * Cos(freq*a),
Origin.y + Radius * Sin(a) + SmallRadius * Sin(freq*a), Origin.z}
where Origin is the center point of the column, a is the angle (goes
from zero to 2pi, in small steps so you have an accurate curve),
Radius is the radius of the column, SmallRadius is the radius of the
waves on the circle and freq is an integer which controls the number
of waves around the column.
If you don't like expressions, you'll have to do something visually
intense using Graph mappers, vector multipliers etc etc.
--
David Rutten
Robert McNeel & Associates
On Oct 15, 12:23 am, noah <[EMAIL PROTECTED]> wrote:
> New to grasshopper and attempting to model gaudi's section-morphing
> columns. Tried searching prior posts, to no avail...
>
> I'd like to create a column section comprising a sin curve along a
> circle. The basic idea is that I would be able to adjust the frequency
> and amplitude of the sine curve, as well as the size and location of
> the circle. By lofting a whole series of different sections - voila! -
> column. Any ideas on drawing the curve I'd like?
>
> Also, the loft function gives me some funny twisted and broken lofts,
> unless I simply loft the baked geometry in Rhino. Any idea how I might
> be able to avoid this?
>
> Thank you all very much. We're lucky to have such a lively discussion
> board.
