Points to surface at revit Dynamo

[Ewan_Opie]

There is a ConvexHull.ByPoints node, but this only works with planar points.

To use this node to find your boundary points you will have to:

• Project your points onto the XY plane. (effectively removing any Z component)

• Find the boundary curve of the Hull of these points.

• Check for points thar occur on this boundary.

• Add the Z component back to the points based on their relationship with the original data.

Actually sounds like lots of fun just not at my PC at the moment to demonstrate.

Some topics to help.

Concave Hull

Concave Hull (Alpha Shape) from list of points with Python?

I cleaned up the code a bit: import clr clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import Line from math import sqrt, hypot points, alpha = IN OUT = [] pLen = len(points) alpha2 = alpha * alpha if pLen < 2: raise Exception('AlphaShape needs at least 2 points') for i, p in enumerate(points): for j in xrange(i+1, pLen): if p.IsAlmostEqualTo(points[j]): raise Exception('AlphaShape needs pairwise distinct points') dist = hypot(p.…

Convex Hull

Concave Hull (Alpha Shape) from list of points with Python?

Ha, @Mark.Ackerley, uni + work does leave for very little time, but I was intrigued. I know this has been answered, but here is another method that uses the Graham Scan method for “Gift Wrapping”. The best method is Chans algorithm from what I’ve read though as it is a combination of the Jarvis March and Graham Scan methods. Here is the Python Code ported over from Thomas Switzers GitHub (I take zero credit for this)… import clr clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geo…