arc rotated

Replies to This Discussion

Permalink Reply by Joseph Oster on December 30, 2015 at 12:24pm

Attachments:

• rotatearc_2015Dec30a.gh, 17 KB

Permalink Reply by Joseph Oster on December 30, 2015 at 12:43pm

I think I see where you're going with this?

Attachments:

• rotatearc_2015Dec30b.gh, 11 KB

Permalink Reply by Joseph Oster on December 30, 2015 at 2:00pm

Attachments:

• rotatearc_2015Dec30c.gh, 14 KB

Permalink Reply by Joseph Oster on December 30, 2015 at 5:39pm

Oh.  I thought that 'EdgeSrf' with only two edges was too simple but didn't see the flaw until I baked it...  "Easy fix" to get a flat lofted result by dividing the 'IntCrv' and making straight lines to the center-top, but boring.  Lacking the saddle effect.

Permalink Reply by deniz ada on December 30, 2015 at 11:50pm

Can this arc be created by using  ax²   parabola or any other  formula ?

Permalink Reply by Joseph Oster on December 31, 2015 at 7:08am

yes

Permalink Reply by deniz ada on December 31, 2015 at 9:26am

 Parabola has been created but it cannot be rotated such polygon around the center point.

Attachments:

• parabole rotate such poligon.JPG, 45 KB
• parabols rotate such poligon.gh, 9 KB

Permalink Reply by Joseph Oster on December 31, 2015 at 9:39am

Oh yes it can!  To build on the earlier code in this thread, you need to create your parabola in the same frame of reference as the 'Arc' and 'IntCrv' examples.

Permalink Reply by Joseph Oster on December 31, 2015 at 10:07am

Attachments:

• rotatearc_2015Dec31a.gh, 28 KB

Permalink Reply by Joseph Oster on December 31, 2015 at 10:41am

In this code you posted, parabols rotate such poligon.gh, if you had connected the 'Range' output to Y instead of X on 'Pt', the parabola would at least be oriented properly for the polar array...

The benefit of using the polygon edges as the basis instead of the polar array is that the parabola ends touch as you want.

Permalink Reply by deniz ada on January 3, 2016 at 10:37am

Thanks 

Poligon is better than polar array in this form. How can the poligon and parabole corner points be moved to Z direction to obtain the image form attached ?

Permalink Reply by Joseph Oster on January 3, 2016 at 11:49am

Looks like you have mucked up the algorithm so the curves don't meet at the polygon vertices anymore!?  That's going backwards...  And moving anything in the Z direction is about as simple as it gets!

It appears you didn't learn much from my code examples.  Too bad.