import clr

#Import Revit Nodes
clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.Elements)
clr.ImportExtensions(Revit.GeometryConversion)

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

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

#The inputs to this node will be stored as a list in the IN variables.
lines = IN[0].ToRevitType()
level = UnwrapElement(IN[1])
type = UnwrapElement(IN[2])
output = []

doc = DocumentManager.Instance.CurrentDBDocument

#Create Curve Array
footprint = []
footPrintToModelCurveMapping = []		
#Loop through lines
for line in lines:
	
	footprint.append(line.Curve)
	footPrintToModelCurveMapping.Append(line.GeometryCurve)
	
iterator = footPrintToModelCurveMapping.ForwardIterator()
iterator.Reset()

while iterator.MoveNext():
	line = iterator.Current as ModelCurve	
	footprintRoof.set_DefinesSlope( line, true )
	footprintRoof.set_SlopeAngle( line, 0.5 )
	
#Start Transaction
TransactionManager.Instance.EnsureInTransaction(doc)

#Create Roof
roof = doc.Create.NewFootPrintRoof(footprint, level, type, out footPrintToModelCurveMapping)
output.append(roof.ToDSType(False))


#End Transaction
TransactionManager.Instance.TransactionTaskDone()

#Assign your output to the OUT variable.
OUT = output