How to making the starting point the same for several closed curves?

Grasshopper
,
1

Hello guys, I have a big problem that has no idea how to solve. From the capture, you can see I already finished the basic shape for my skyscraper and prepared to loft them. However, the shape is bad because the starting points of these curves are different. Is there a way to change these starting points of curves to be the same? :sob:
problem.gh (288.0 KB)

problem
problem3280×1468 66.2 KB

2

Hi @YiXin_Mao
One way is to use the Align Curve Seams component with the Seam parameter set to 1.

image
image1920×1026 78.6 KB

possible solution.gh (293.6 KB)

HTH, Jakob

3

Thanks! that fixes some problems. However, the shape is still not what I want to have and I am not allowed to use more plug-ins for that thing. What I want to have is a very nice and ordered shape.

image
image1920×1080 147 KB

4

Hi @YiXin_Mao
If you look at the point distribution of your cross sections they are quite irregular and have varying number of control points, making a smooth loft unlikely without rebuilding the sections to a similar number and distribution of control points. The cross sections need to match for loft to work properly.
HTH, Jakob