Hello ,

Today we will explain our Case Study From the Introduction Video we presented in our webinar "Generative BIM 101 " if you didn`t see it please go and have a look

" https://youtu.be/SS-M1mquScs ":

This is our Complete Code :

First we will explain new nodes we are using in this script then we will explain the whole script :

A . Arc.ByCenterPointRadiusAngle :

Creates an Arc by the Following inputs :

Center : Point

Radius:Number

Start Angel : number between 0 -360

Start Angel : number between 0 -360

Normal : The Normal Axis on Arc "X,Y or Z Axis"

B . Curve.PointAtEqualSegmentLength :

Divide The Curve to equal Segments and create points at every Division , It ignores the start and end point by the Following inputs :

Curve : the Curve you want to divide.

Divisions : Number Of Divisions.

C . Curve.(Start,End).Point :

Get the Curve Start Point - End Point

D . List.Create :

Create list by any given number of Items "+ to add new item , - to remove one "

E . Flatten :

Exploding Sub lists to be only on list with all the items

F . List.Transpose :

This would be easy for excel users to transpose is to make column cells and cells columns

G . Arc.ByBestFitThroughPoints :

Give at list of points and it ill will find the Smallest path to connect them by Arc

No let`s Discuss the Definition :

1.

Creating the Small Arc and Divide it :

• First you create the arch by point at (0,0,0)

• with start angle 0 and end angle 180 to get half circle

• then use Curve.PointAtEqualSegmentLength to divide the arc and put points at the place of divisions

• and since it ignores the start and end point we will add the start point to start of the list and the end point to the end of the list by List.Create

• now we should Flatten the list to have a single list that contains all the items organized from the start point to the end point

2.

The Same For The Big Arc But with Different Start and End Angle parameter Only :

3.

Create a list of Points x =0 y=0 but z = list of point

• Start .. End .. #Count like you are saying create a list of numbers that start with this number and ends with this number at this count

• and to be sure always the it has the same count of arc point division list we will get the number of list by List.Count

• and create a point by x =0 y=0 and put the list of numbers in the z value

4.

Using List Create to add

• Small Arc Points at item0

• the list of point we just created at item1

• Big Arc Points At item2

Now use Transpose to get each one point from each list and out them together in sublist

use this list to create the Arc

Download Link :

https://www.dropbox.com/s/cbwsuu81sjfa0l5/Parametric-Reverse.dyn?dl=0