MicroStation - MicroStation Python: Iterate Cell Element

Welcome to the world of MicroStation Python! This wiki will guide you through the process of iterating over Cell element.

Iterate Cell Element

To get started, refer to the Python Manager wiki for instructions on creating and loading a new Python project. Name your project "ScanCellElements.py" and save it in a convenient location. Once created, open the project in your preferred code editor to begin writing your Python script.

Here is the complete script.

from MSPyBentley import *
from MSPyBentleyGeom import *
from MSPyECObjects import *
from MSPyDgnPlatform import *
from MSPyDgnView import *
from MSPyMstnPlatform import *


# Read Cell Elements function
def ReadCellElement(elmId):
    global dgn_model
    global numChildren

    eeh = EditElementHandle(elmId, dgn_model)
    child = ChildElemIter(eeh)
    while(child.IsValid()):
        elm = child.GetElement ()
        numChildren +=1        
        if (False == elm.IsComplexHeader()):
            print(f"*** [{numChildren}] - Type: {child.GetElementType()} - ID: {elm.GetID()}")
        else:
            print(f"*** [{numChildren}] - Type: {child.GetElementType()} - ID: {elm.GetID()} - Complex Elements Count: {elm.GetComplexComponentCount()}")
            ReadCellElement(elm.GetID())
        child = child.ToNext()


# Main function
def main():
    global ACTIVEMODEL
    global dgn_model
    global dgn_file
    global uor
    global numChildren

    # Globals
    ACTIVEMODEL = ISessionMgr.ActiveDgnModelRef
    dgn_model = ACTIVEMODEL.GetDgnModel()
    dgn_file = dgn_model.GetDgnFile()
    model_info = dgn_model.GetModelInfo()
    uor = model_info.GetUorPerStorage()

    numChildren = 0
    #elementId = 1557
    elementId = 1542
    ReadCellElement(elementId)
    print(f"Total Elements : {numChildren}")


# Main
if __name__ == "__main__":
    print("***** Cell Elements *****")
    main()

Run/Execute project

Load the project "ScanCellElements.py" from the Python Manager dialog and Run/Execute the python script.

The above python code, identifies a Cell element by its ID. Iterates through all child elements (via ChildElemIter), outputting their TYPE, ID, and the TOTAL NUMBER of child elements within the cell.

File:

CellFile.dgn

Happy coding!