Manipulating Curve Shape (CV's) Best Practice

I am looking for a bit of help in regards to what users feel the best way of manipulating Curve Shapes (Individual CV's and Groups of CV's) with Grasshopper is?

I have seen many fancy tutorials making crazy generative objects between curves, but sometimes we just need to dial-in a specific curve shape using sliders... In my case to create a 'Concave' Lofted Surface that needs to be modified to fit within a specific object in a generative series.

My current workflow usually involves getting the CV points of a curve, moving or scaling the separate points w/ Vectors, and then re-assembling the various points back together with the list item component. Which unfortunately usually ends up being a bit of a trial and error gig for me to get the order of the CV's correct in List Item/s to make a proper curve. I have tried using the 'Sort Points' along a curve function, but find it often falls apart when moving the CV's too far, or when creating concave curves.

Anyone care to take a look at and point me towards a simpler solution? I just know there is a MUCH better way to handle this relatively simple task. I know you are all way better at this than me :)

THANK YOU in advance for the help.

Peace,

-Tyson

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Permalink Reply by Tyson Atwell on November 22, 2013 at 6:23pm

GH 0.9.0064 File attached if anyone wants to play :)

Attachments:

Concave_Lofted_Surface.gh, 30 KB

Permalink Reply by Hannes Löschke on November 23, 2013 at 1:54am

Modified your Definition to make use of the SplitList and Merge components. Both provide a better way to keep track of how your lists are split up and merged back.

Other than that, there is no way to directly control a curves CPs. You'll alway have to extract them, modify them and create a new curve.

Permalink Reply by Hannes Löschke on November 23, 2013 at 1:55am

forgot the file :D

Attachments:

Concave_Lofted_Surface_merge.gh, 18 KB

Permalink Reply by Tyson Atwell on November 23, 2013 at 10:18pm

Hannes,

I really appreciate you taking the time to help me out!

The 'Merge' component is exactly what I was looking for :) Great that it 'scales' as needed, and the order of the list remains visible. (Unlike what I was doing with the 'List-Item' component.) The 'Split-List' component is obviously more efficient as well.

Thanks Again! Your input will definitely help me moving forward...

-Tyson

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