Geometry conversion warning

1

Hi,
I am trying to get the geometry of structural framing objects trought a python script, that sorts the objects by the relative position.

the problem is, I am getting this message:

Warning: One or more geometries have failed to convert due to this error: The call is ambiguous between the following methods or properties: ‘Revit.GeometryConversion.GeometryObjectConverter.Transform(System.Collections.Generic.IEnumerable<Autodesk.DesignScript.Geometry.Geometry>, Autodesk.DesignScript.Geometry.CoordinateSystem)’ and ‘Revit.GeometryConversion.GeometryObjectConverter.Transform(Autodesk.DesignScript.Geometry.Geometry, Autodesk.DesignScript.Geometry.CoordinateSystem)’

The script still works, but it always returns completed with warnings.

Wich method is the correct one? And how do I chose since both are from the same “Autodesk.DesignScript.Geometry.Geometry” class

my script is:

# Enable Python support and load DesignScript library
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

# The inputs to this node will be stored as a list in the IN variables.
dataEnteringNode = IN

def takeThird(elem):
    return elem[2]
    

studs=IN[0]
loc=IN[1]

m=[]
i=0
for p in studs:
	s=[]
	j=0
	for e in p:
		s.append([e, loc[i][j], loc[i][j].X])
		j+=1	
	i+=1
	s.sort(key=takeThird)
	m.append(s)
# Place your code below this line



re=[]
for l in m:
	r=[]
	for n in l:
		r.append(n[0])
	re.append(r)
	
re2=[]
for l in m:
	r=[]
	for n in l:
		r.append(n[0].Geometry()[0])
	re2.append(r)
# Assign your output to the OUT variable.
OUT = re, re2

Thanks.

2

It might be helpful to post an rvt with an example of the geometry in question.

It’s not exactly the same but I have come across this same error when iterating over the geometry from a Revit instance (Python code below). In my case, e.get_Geometry was returning a null for a solid that had no edges or faces and trying to call g.Convert() on it raised the error. When I excluded it with if g != None and g.Faces.Size != 0 and g.Edges.Size != 0: the error disappeared.

In my case calling e.Geometry() worked fine (I was only using get_Geometry() instead because I wanted to get the subcategory of the geometry prior to converting to Dynamo geometry) so I’m not sure what the issue might be for you, but I think it probably relates to the family

The Python node behaviour comparison between if g != None: and if g != None and g.Faces.Size != 0 and g.Edges.Size != 0:

image
image.png688×607 51.3 KB 

import clr
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager

# Document
doc = DocumentManager.Instance.CurrentDBDocument

# IN
e = UnwrapElement(IN[0]) # Unwrap family instances

# List and Options
solids = []
geomOptions = Options()
geoms = e.get_Geometry(geomOptions) # Get the geometry from the element
enum = geoms.GetEnumerator() ; enum.MoveNext() # Enumerator
geom = enum.Current.GetInstanceGeometry()
for g in geom:
	if g != None and g.Faces.Size != 0 and g.Edges.Size != 0:
		sol = g.Convert()
		solids.append(sol)

OUT = solids
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3

Thanks a lot Thomas.
I will give it a go.

1 Like