Creating a Crop Box for Room in Elevation View

6

Hi,
here the case is a little different, it is still necessary to take into account the transformation of the view.
Here I use the solid of the View section and the solid of the part to compute the intersection

adjust section from cropbox from room2

image
image1134×747 108 KB


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

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

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

clr.AddReference('RevitNodes')
import Revit
clr.ImportExtensions(Revit.GeometryConversion)

clr.AddReference("System.Reflection")
from System.Reflection import BindingFlags

debug = []
view = UnwrapElement(IN[0])
space = UnwrapElement(IN[1])
margin = IN[2] # in feet
#
crsm = view.GetCropRegionShapeManager()
cpbbx = view.CropBox
tfBBx = cpbbx.Transform 
pt1 = cpbbx.Min
## compute solid from section View BoundingBox with transform
pt2 = XYZ(cpbbx.Max.X, cpbbx.Min.Y, cpbbx.Min.Z)
pt3 = XYZ(cpbbx.Max.X, cpbbx.Max.Y, cpbbx.Min.Z)
pt4 = XYZ(cpbbx.Min.X, cpbbx.Max.Y, cpbbx.Min.Z)
lstLoopPoints = [pt1, pt2, pt3, pt4, pt1]
#
lstCurveLoop = List[CurveLoop]()
curveLoop = DB.CurveLoop()
for idx, pt in enumerate(lstLoopPoints):
    if idx > 0:
        curveLoop.Append(DB.Line.CreateBound(lstLoopPoints[idx - 1], pt))
lstCurveLoop.Add(curveLoop)

solidSection = DB.GeometryCreationUtilities.CreateExtrusionGeometry(lstCurveLoop, XYZ.BasisZ, cpbbx.Max.Z - cpbbx.Min.Z)
solidSection = DB.SolidUtils.CreateTransformed(solidSection,  tfBBx)
## get solid of Space or Room
calculator = SpatialElementGeometryCalculator(doc)
if calculator.CanCalculateGeometry(space):
    TransactionManager.Instance.EnsureInTransaction(doc)
    results = calculator.CalculateSpatialElementGeometry(space)
    spaceSolid = results.GetGeometry()
    # compute solid intersection 
    interSolid = BooleanOperationsUtils.ExecuteBooleanOperation(solidSection, spaceSolid, BooleanOperationsType.Intersect)
    # get the parallel face to the view orientation
    face = max((f for f in interSolid.Faces if isinstance(f, DB.PlanarFace) and f.FaceNormal.IsAlmostEqualTo( view.ViewDirection)), key = lambda x : x.Area)
    # get the curloop
    curveloop_shape = max(face.GetEdgesAsCurveLoops(), key=lambda c : c.GetExactLength())
    # add margin
    curveloop_shape_offset = DB.CurveLoop.CreateViaOffset(curveloop_shape, margin, face.FaceNormal)
    crsm.SetCropShape(curveloop_shape_offset)
    #interSolid.Dispose()
    results.Dispose()
    TransactionManager.Instance.TransactionTaskDone()
    OUT =  face.ToProtoType()

there is a bug with CPython/PythonNet 2.5.x (inheritance problem in the function parameter) but should be manageable with Reflection

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