You could reference a point (or even a line segment) in Rhino which
defines the wind direction and strength. Then convert that line
segment into a vector and use it inside your definition.
Now, if you adjust the line in Rhino, grasshopper will respond. Note
that rhino never responds DURING a drag, only once you let go. I often
use Alt+Arrow keys (nudge keys) to modify existing geometry in small
steps.

--
David Rutten
Robert McNeel & Associates


On Jan 16, 7:54 pm, CMRHM <[email protected]> wrote:
> " geometry reacting to a law curve for example, or reacting to
> attractors ?"
> Yes. This is sth I am looking for.
>
> I am doing an architecture experiment.  I want to create a building
> structure which changes its shape when the wind change its direction.
>
> The first step would be to have a vertex matrix, then when a force hit
> it, this matrix changed its form.
>
> Is it clear? I can try tonight to see if I can post an image or not.
>
> On Jan 16, 11:42 am, baldino <[email protected]> wrote:
>
> > can you explain what you mean by "dynamic response" ? geometry
> > reacting to a law curve for example, or reacting to attractors ? this
> > is possible in GH
> > do you have some project images to illustrate what you mean ?
>
> > On Jan 16, 5:22 pm, CMRHM <[email protected]> wrote:
>
> > > Several years ago In architecture field, there are quite a few
> > > architects use Maya to create some sorts of bynamic response system to
> > > generate architectural built form. Can Grasshopper achieve this kind
> > > of effects now? I know it should be ok in theory since it is just a
> > > code. But in reality, I don't know if there are some existing
> > > functions can allow us to do such things?- Hide quoted text -
>
> > - Show quoted text -

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