regional difference not working (void in tower)

Hello,

I am new to grasshopper and have a problem.

What I am doing is basically creating a 'void' of rotating ellipses through basic yet parametrically controlled geometry.

The center of the ellipse should drive everything.

Everything works in 2d on one level. When I create series for multiple levels.. the series of ellipses no longer subtracts from the series of rectangle geometries.

Is there a different command or way to do this?

Some attempts.

pop31.gh

pop4.ghx

Replies to This Discussion

Permalink Reply by alex jenter on April 6, 2013 at 3:31pm

It's a datamatching problem. if you want to be able to drive the floors by the centerpoints you need to have everything in your floormodel be drive by the centerpoint. i just gave all the important points 10 different heights as a list, (graft!) but you could also let your centerpoint pass his z-coordinate to the others. In that case you would just plug in floor heights to the centerpoint. Check out example.gh it explains the concept of dependency in a very simplyfied manner.

Attachments:

pop31.gh, 20 KB
example.gh, 6 KB

Permalink Reply by Alex Alaimo on April 7, 2013 at 9:25am

Thank you Alex,

That was a big help.. The final thing I have to do is rotate the center ellipse on each floor.. This will make each floor unique and adaptive.. any suggestions?

Thanks,

Alex

Permalink Reply by Alex Alaimo on April 7, 2013 at 10:43am

I think I got it. Ellipses are rotating and affecting geometry..

.. now the only problem is controlling the 'point on curve' so the surfaces do not overlap

Attachments:

pop314.gh, 23 KB

Permalink Reply by Alex Alaimo on April 7, 2013 at 7:16pm

Thanks again,

here is the working model if your interested.

Attachments:

pop518.gh, 31 KB

Permalink Reply by alex jenter on April 9, 2013 at 1:58pm

cool stuff alex! the only objection i have is how the ellipse cuts through the fillets just partially, but lets not get into formalism... ;) and i'm not sure if you are using the range and graphmapper setup like this on purpose, normally i would have my input range cover the whole intervall of the graphmapper and use the beziercurve for mapping, like so:

Attachments: