Convert planarface to DS face

Revit
1

Hi!

I got planar faces where I extracted from solid using solid.Faces
image
But how can I convert them to DS faces?
I tried GetSurface() but it returns plane :frowning:
image

thanks!

1 Like
2

@newshunhk ,

Can you share the code? which Dynamo and Revit do you use?

3

Just trying to find all the surfaces of a stair:

image
image700×508 3.42 KB

image

import clr
import sys
import System
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
import Autodesk.DesignScript.Geometry as DS

clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *
import Autodesk.Revit.DB as DB

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

doc = DocumentManager.Instance.CurrentDBDocument

def get_VolumeSolid(elem):
    opt = Options()
    solid = []
    geoSet = elem.get_Geometry(opt)
    for geo in geoSet:
        if isinstance(geo, Solid):
        	for f in geo.Faces:
				solid.append(f.ToProtoType())
        elif isinstance(geo, GeometryInstance):
            geoi = geo.GetInstanceGeometry()
            for g in geoi:
                if isinstance(g, Solid):
					for f in g.Faces:
						solid.append(f.ToProtoType())
    geoSet.Dispose()
    opt.Dispose()
    return solid


def toList(x):
    if isinstance(x, list):
        return x
    elif hasattr(x, "GetType") and x.GetType().GetInterface("IEnumerable") is not None:
        return x
    else :
        return [x]

lstelems = toList(UnwrapElement(IN[0]))

OUT = [get_VolumeSolid(e) for e in lstelems]
4

@newshunhk ,

grafik
grafik1017×671 83.7 KB

you want access via python ?

1 Like
5

I don’t use element.geometry because it will halt my revit or fail to convert if there is some spiral or bad drawn sketch based stairs.

image
image993×528 109 KB

6

image
image1037×463 93.6 KB

7

@newshunhk ,

oh… hmmm :confused:

# This node has been made by Modelical
# www.modelical.com

import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

def flatten(x):
    result = []
    for el in x:
        if hasattr(el, "__iter__") and not isinstance(el, basestring):
            result.extend(flatten(el))
        else:
            result.append(el)
    return result
    
def toList(input):
	"""Return iterable if available, a list of 1 otherwise"""
	if hasattr(input, "__iter__") and not isinstance(input, basestring):
		return input
	else:
		return [input]  
        
stairs = toList(IN[0])

stairsSrfs = []
stairAreas = []

for st in stairs:
	solids = st.Geometry()
	tempPSrf = []
	for s in solids:
		tempPSrf.append(PolySurface.Surfaces(PolySurface.BySolid(s)))
	stairsSrfs.append(flatten(tempPSrf))


for sSrfs in stairsSrfs:
	tempSrf = []
	for srf in sSrfs:
		if Surface.NormalAtParameter(srf, 0, 0).Z == 1:
			tempSrf.append(srf.Area)
	stairAreas.append(sum(map(float,tempSrf)))	

OUT = stairAreas
8

the script from Modelical is no use, it uses dynamo element.geometry.

image
image1181×560 112 KB

1 Like
9

Hi @newshunhk,

You have to import the RevitNodes.dll and use geometryconversion to use ToProtoType().

clr.AddReference('RevitNodes')
import Revit
# Adds ToProtoType, ToRevitType geometry conversion extension methods to objects
clr.ImportExtensions(Revit.GeometryConversion)

import clr
clr.AddReference('RevitNodes')
import Revit
# Adds ToProtoType, ToRevitType geometry conversion extension methods to objects
clr.ImportExtensions(Revit.GeometryConversion)

clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import *
import Autodesk.Revit.DB as DB

clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
doc = DocumentManager.Instance.CurrentDBDocument

def get_VolumeSolid(elem):
    opt = Options()
    solid = []
    geoSet = elem.get_Geometry(opt)
    for geo in geoSet:
        if isinstance(geo, Solid):
        	for f in geo.Faces:
				solid.append(f.ToProtoType())
        elif isinstance(geo, GeometryInstance):
            geoi = geo.GetInstanceGeometry()
            for g in geoi:
                if isinstance(g, Solid):
					for f in g.Faces:
						solid.append(f.ToProtoType())
    geoSet.Dispose()
    opt.Dispose()
    return solid


def toList(x):
    if isinstance(x, list):
        return x
    elif hasattr(x, 'GetType') and x.GetType().GetInterface('IEnumerable') is not None:
        return x
    else :
        return [x]

lstelems = toList(UnwrapElement(IN[0]))

OUT = [get_VolumeSolid(e) for e in lstelems]

surface
surface910×521 48.7 KB

4 Likes
10

oh!!! yes I forgot to import
thank you !!! :slight_smile: