Automaticly import and check OpenSCAD files into FreeCAD

testimport.py

import FreeCAD
import importCSG
#import prototype
importmod=importCSG
dirpath=''

def comparewithstl(filename,obj,doc):
#    import MeshPart
    import Mesh
    import OpenSCADUtils
    import os
    tmpfilename=OpenSCADUtils.callopenscad(filename,outputext='stl')
    if tmpfilename:
        #doc=FreeCAD.activeDocument() or FreeCAD.newDocument()
        import Mesh
        Mesh.insert(tmpfilename,doc.Name)
    try:
        os.unlink(tmpfilename)
    except IOError,WindowsError:
        pass
    meshdocname=os.path.split(tmpfilename)[1]
    meshname,meshextension = meshdocname.split('.',1)
    mesh = doc.getObject(meshname.replace('-','_'))
    #if not mesh:
    #41print meshname
    volfac=obj.Shape.Volume/mesh.Mesh.Volume
    import math
    if abs(math.log(volfac)) > 0.008:
        return 'different volume %s' %('%f %f' % (volfac,math.log(volfac)))
    mbb=mesh.Mesh.BoundBox
    pbb=obj.Shape.BoundBox
    bbdistance=pbb.Center-mbb.Center
    if any([abs(f) > 0.05 for f in (bbdistance)]):
        return 'different BoundBox center %s' % str(bbdistance)
    #next some larger bounding boxes
    mbbl=FreeCAD.BoundBox(mbb)
    pbbl=FreeCAD.BoundBox(pbb)
    mbbl.enlarge(max((mbb.DiagonalLength*0.005,0.01)))
    pbbl.enlarge(max((pbb.DiagonalLength*0.005,0.01)))
    if not (mbbl.isInside(pbb) and pbbl.isInside(mbb)):
        return 'different BoundBox %s ' % ('%s\%s'%(pbb,mbb))

def testimport(filename,closedoc=True):
    try:
        importmod.open(filename)
    except Exception, e:
        #raise
        return ('exception on import', e)
    doc=App.ActiveDocument
    finalobjects=[obj for obj in doc.Objects if not obj.InList]
    if len(finalobjects) == 0:
        return 'no object'
    if len(finalobjects) > 1:
        return 'multiple objects'
    try:
        if not all([aobj.Shape.isValid() for aobj in  doc.Objects if hasattr(obj,'Shape')]):
            return 'invalid shapes'
    except Exception, e:
        return ('exception on shape check', e)        
    obj=finalobjects[0]
    #if obj.Shape.isValid()
    return comparewithstl(filename,obj,doc)
    #if closedoc:
    #    FreeCAD.closeDocument(doc.Name) #does not work

import os
import time
#import random

dirlist=list(os.listdir(dirpath))
#random.shuffle(dirlist)
for dirent in (dirlist):
    print dirent
    if dirent.lower().endswith('.scad'):
        shortname = dirent.split('.',1)[0]
        print dirent
        result=testimport(dirpath+dirent)
        if result is not None:
            from PyQt4 import QtGui
            QtGui.QMessageBox.critical(None, 'error' ,str(result))
            print result
            break