3 June 2014 CamBam File Merge Python scripts

This script merges all the drawing objects and machining operations from a list of CamBam (.cb) files into the current drawing.

References to drawing object IDs, such as machining operation source objects, are remapped to new, unique object IDs of the merged file.

This script demonstrates:

• opening CamBam (.cb) files.
• iterating through layers, drawing objects, parts and machining operations
• using Windows forms OpenFileDialog
• using Python hash tables for ID remapping

Python version...

Python Script:

"""

CBFileMerge.py

Merge multiple CamBam (*.cb) files into the current drawing.

Version: 1.0, [2014-06-03]
Author: 10bulls

"""

import sys
import clr
clr.AddReference("System.Windows.Forms")
from System.Windows.Forms import OpenFileDialog
from System.Windows.Forms import DialogResult
from System.IO import Directory
from System.Collections.Generic import List

# switch to toggle between a file open dialog or directory list...
filebrowse = True

cbfiles = []

if (filebrowse):
    dlg = OpenFileDialog()
    dlg.Filter = doc.OpenFileFilter
    dlg.DefaultExt = doc.DefaultExtension
    dlg.Multiselect = True 
    ret = dlg.ShowDialog()
    if (not ret == DialogResult.OK): sys.exit()
    cbfiles = dlg.FileNames
else:
    # Merge all .cb files in a directory...
    cbfiles = Directory.GetFiles("C:\\CamBam\\cbfiles\\misc", "*.cb")
    # or declare an array of files...
    # cbfiles = [ "C:\\CamBam\\cbfiles\\0.9.8\\ball.cb",
    #            "C:\\CamBam\\cbfiles\\0.9.8\\continuous-spiral-lead.cb" ]

doc.Layers.Clear()  
doc.Parts.Clear()          
            
# loop through cambam files
for cbfile in cbfiles:

    print "Merging ", cbfile
    
    cb = CADFile()
    cb.Open(cbfile)

    # make a hashtable to map primitive IDs
    idmap = {}

    # loop through layers
    for layer in cb.Layers:
        # copy the layer
        newlayer = layer.Clone()
        # Clone makes a shallow copy of Entities, so need to clear this
        newlayer.Entities.Clear()
        newlayer.Parent = None
        
        # get a unique name for the copied layer
        i = 1
        while doc.HasLayer(newlayer.Name):
            newlayer.Name = layer.Name.rstrip("0123456789") + str(i)
            i = i + 1
    
        doc.Layers.Add(newlayer)

        # loop through drawing objects
        for o in layer.Entities:
            
            # copy drawing object
            o2 = o.Clone()
            newlayer.Entities.Add(o2)
            
            # maintain a map of old ID -> new ID
            idmap[o.ID] = o2.ID
            
    # loop through parts
    for part in cb.Parts:
        # copy the part
        newpart = part.Clone()
        # Clone makes a shallow copy of MachineOps, so need to clear this
        newpart.MachineOps.Clear()
        newpart.CADFile = None
        
        # get a unique name for the copied part
        i = 1
        while doc.HasPart(newpart.Name):
            newpart.Name = part.Name.rstrip("0123456789") + str(i)
            i = i + 1

        # Remap nesting point list IDs
        if (not String.IsNullOrEmpty(newpart.Nesting.PointListID)):
            newpart.Nesting.PointListID = str(idmap[int.Parse(newpart.Nesting.PointListID)])
            
        doc.Parts.Add(newpart)
        
        # loop through machining operations
        for mop in part.MachineOps:
            # copy machining operation
            m = mop.Clone()
            
            # Remap primitive IDs for MOPFromGeometry
            if isinstance(mop,MOPFromGeometry):
                newPrimIDs = List[int]()
                for ID in mop.PrimitiveIds:
                    newPrimIDs.Add( idmap[ID] )
                m.PrimitiveIds = newPrimIDs.ToArray()
                
                # For 3D Surface, remap Boundary shape IDs
                if (isinstance(mop,MOP3DSurface)):
                    if (mop.BoundaryShapeIds is not None):
                        newBSPrimIDs = List[int]()
                        for ID in mop.BoundaryShapeIds:
                            newBSPrimIDs.Add( idmap[ID] )
                        m.BoundaryShapeIds = newBSPrimIDs.ToArray()
            
            newpart.MachineOps.Add(m)

print "Merge Finished"