Trouble Populating Tween Curves with Generic Geometry

Replies to This Discussion

Permalink Reply by Steve Tucker on September 4, 2014 at 5:13pm

Permalink Reply by Steve Tucker on September 4, 2014 at 5:13pm

Permalink Reply by Steve Tucker on September 4, 2014 at 5:14pm

Permalink Reply by David Rutten on September 4, 2014 at 5:27pm

Hi Steve,

the [Populate Geometry] component puts points on a wide variety of geometric types. If you want to put copies of some other geometry you already have defined, you'll have to add additional components. Basically, you can use the points created by [PopGeo] as the end-points of translation vectors.

Attachments:

• popgeo.gh, 5 KB

Permalink Reply by David Rutten on September 4, 2014 at 5:35pm

And with added rotation:

Attachments:

• popgeo.gh, 8 KB

Permalink Reply by Steve Tucker on September 4, 2014 at 7:36pm

Thank you so much for the help David.  If I wanted the geometry to flow along the line and be oriented to the direction the line is projecting, how would I modify the rotate component?

Thanks again. 

Permalink Reply by AB on September 4, 2014 at 8:50pm

Steve,

This may be what you are talking about... just slightly altered David's last example. Rather than using the vector to the closest point on the outer circle, it simply uses the Tangent Vector at the placement point along the curve.

Attachments:

• popgeo_alongCrv-2.gh, 8 KB

Permalink Reply by Steve Tucker on September 5, 2014 at 4:42pm

Thank you AB and David. 

I was able to get the grasshopper file to work with my tween but after creating a range for the tween, I'm getting some abnormal rotations of the component at varying moments with the tween.  I took snap shots before and after the range creation and attached the gh file also.

Thanks so much for the help. 

Permalink Reply by Steve Tucker on September 5, 2014 at 4:43pm

Thank you AB and David. 

I was able to get the grasshopper file to work with my tween but after creating a range for the tween, I'm getting some abnormal rotations of the component at varying moments with the tween.  I took snap shots before and after the range creation and attached the gh file also.

Thanks so much for the help. 

Attachments:

• testerpopgeo_alongCrv2_v2.gh, 10 KB
• modified layout_v1_all-04-04.JPG, 2.2 MB

Permalink Reply by nikos tzar on September 5, 2014 at 5:28pm

Hi Steve,

since you provided 4 numbers in the tween curve component, you now work with 4 curves instead of one so you need to work with trees from there on.

If you graft the curve inputs in [CrvCp] and [eval] components you should be ok.

you just need to always keep an eye on the data structure in the inputs of any component.

Permalink Reply by Steve Tucker on September 5, 2014 at 6:07pm

Nikos!  Thanks a lot.  Ironically, I was reading up on grafting and flattening as you replied. 

Thanks! I think this does it for me.  I will have to help a few others out to pay forward the help that every one gave.

Will post the final result later.

Thanks