186 lines
7.6 KiB
Python
186 lines
7.6 KiB
Python
#***************************************************************************
|
|
#* *
|
|
#* Copyright (c) 2012 Sebastian Hoogen <github@sebastianhoogen.de> *
|
|
#* *
|
|
#* This program is free software; you can redistribute it and/or modify *
|
|
#* it under the terms of the GNU Lesser General Public License (LGPL) *
|
|
#* as published by the Free Software Foundation; either version 2 of *
|
|
#* the License, or (at your option) any later version. *
|
|
#* for detail see the LICENCE text file. *
|
|
#* *
|
|
#* This program is distributed in the hope that it will be useful, *
|
|
#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
#* GNU Library General Public License for more details. *
|
|
#* *
|
|
#* You should have received a copy of the GNU Library General Public *
|
|
#* License along with this program; if not, write to the Free Software *
|
|
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
|
|
#* USA *
|
|
#* *
|
|
#***************************************************************************
|
|
|
|
__title__="FreeCAD OpenSCAD Workbench - Utility Fuctions"
|
|
__author__ = "Sebastian Hoogen"
|
|
__url__ = ["http://www.freecadweb.org"]
|
|
|
|
'''
|
|
This Script includes various pyhton helper functions that are shared across
|
|
the module
|
|
'''
|
|
|
|
class OpenSCADError(Exception):
|
|
def __init__(self,value):
|
|
self.value= value
|
|
#def __repr__(self):
|
|
# return self.msg
|
|
def __str__(self):
|
|
return repr(self.value)
|
|
|
|
def searchforopenscadexe():
|
|
import os,sys,subprocess
|
|
if sys.platform == 'win32':
|
|
testpaths = [os.path.join(os.environ.get('Programfiles(x86)','C:'),\
|
|
'OpenSCAD\\openscad.exe')]
|
|
if 'ProgramW6432' in os.environ:
|
|
testpaths.append(os.path.join(os.environ.get('ProgramW6432','C:')\
|
|
,'OpenSCAD\\openscad.exe'))
|
|
for testpath in testpaths:
|
|
if os.path.isfile(testpath):
|
|
return testpath
|
|
else: #unix
|
|
p1=subprocess.Popen(['which','openscad'],stdout=subprocess.PIPE)
|
|
if p1.wait() == 0:
|
|
opath=p1.stdout.read().split('\n')[0]
|
|
return opath
|
|
|
|
def workaroundforissue128needed():
|
|
'''sets the import path depending on the OpenSCAD Verion
|
|
for versions <= 2012.06.23 to the current working dir
|
|
for versions above to the inputfile dir
|
|
see https://github.com/openscad/openscad/issues/128'''
|
|
vdate=getopenscadversion().split(' ')[2].split('.')
|
|
year,mon=int(vdate[0]),int(vdate[1])
|
|
return (year<2012 or (year==2012 and (mon <6 or (mon == 6 and \
|
|
(len(vdate)<3 or int(vdate[2]) <=23)))))
|
|
#ifdate=int(vdate[0])+(int(vdate[1])-1)/12.0
|
|
#if len(vdate)>2:
|
|
# fdate+=int((vdate[2])-1)/12.0/31.0
|
|
#return fdate < 2012.4759
|
|
|
|
def getopenscadversion(osfilename=None):
|
|
import os,subprocess,tempfile,time
|
|
if not osfilename:
|
|
import FreeCAD
|
|
osfilename = FreeCAD.ParamGet(\
|
|
"User parameter:BaseApp/Preferences/Mod/OpenSCAD").\
|
|
GetString('openscadexecutable')
|
|
if osfilename and os.path.isfile(osfilename):
|
|
p=subprocess.Popen([osfilename,'-v'],\
|
|
stdout=subprocess.PIPE,universal_newlines=True)
|
|
p.wait()
|
|
return p.stdout.read().strip()
|
|
|
|
def callopenscad(inputfilename,outputfilename=None,outputext='csg',keepname=False):
|
|
'''call the open scad binary
|
|
returns the filename of the result (or None),
|
|
please delete the file afterwards'''
|
|
import FreeCAD,os,subprocess,tempfile,time
|
|
def check_output2(*args,**kwargs):
|
|
kwargs.update({'stdout':subprocess.PIPE})
|
|
p=subprocess.Popen(*args,**kwargs)
|
|
stdoutd,stderrd = p.communicate()
|
|
if p.returncode != 0:
|
|
raise OpenSCADError('%s\n' % stdoutd.strip())
|
|
#raise Exception,'stdout %s\n stderr%s' %(stdoutd,stderrd)
|
|
if stdoutd.strip():
|
|
FreeCAD.Console.PrintWarning(stdoutd+u'\n')
|
|
return stdoutd
|
|
|
|
osfilename = FreeCAD.ParamGet(\
|
|
"User parameter:BaseApp/Preferences/Mod/OpenSCAD").\
|
|
GetString('openscadexecutable')
|
|
if osfilename and os.path.isfile(osfilename):
|
|
if not outputfilename:
|
|
dir1=tempfile.gettempdir()
|
|
if keepname:
|
|
outputfilename=os.path.join(dir1,'%s.%s' % (os.path.split(\
|
|
inputfilename)[1].rsplit('.',1)[0],outputext))
|
|
else:
|
|
outputfilename=os.path.join(dir1,'output-%d.%s' % \
|
|
(int(time.time()*100) % 1000000,outputext))
|
|
check_output2([osfilename,'-o',outputfilename, inputfilename],\
|
|
stderr=subprocess.STDOUT)
|
|
return outputfilename
|
|
|
|
def callopenscadstring(scadstr,outputext='csg'):
|
|
'''create a tempfile and call the open scad binary
|
|
returns the filename of the result (or None),
|
|
please delete the file afterwards'''
|
|
import os,tempfile,time
|
|
dir1=tempfile.gettempdir()
|
|
inputfilename=os.path.join(dir1,'input-%d.scad' % \
|
|
(int(time.time()*10) % 1000000))
|
|
inputfile = open(inputfilename,'w')
|
|
inputfile.write(scadstr)
|
|
inputfile.close()
|
|
outputfilename = callopenscad(inputfilename,outputext=outputext,\
|
|
keepname=True)
|
|
os.unlink(inputfilename)
|
|
return outputfilename
|
|
|
|
def reverseimporttypes():
|
|
'''allows to search for supported filetypes by module'''
|
|
|
|
def getsetfromdict(dict1,index):
|
|
if index in dict1:
|
|
return dict1[index]
|
|
else:
|
|
set1=set()
|
|
dict1[index]=set1
|
|
return set1
|
|
|
|
importtypes={}
|
|
import FreeCAD
|
|
for key,value in FreeCAD.getImportType().iteritems():
|
|
if type(value) is str:
|
|
getsetfromdict(importtypes,value).add(key)
|
|
else:
|
|
for vitem in value:
|
|
getsetfromdict(importtypes,vitem).add(key)
|
|
return importtypes
|
|
|
|
|
|
def fcsubmatrix(m):
|
|
"""Extracts the 3x3 Submatrix from a freecad Matrix Object
|
|
as a list of row vectors"""
|
|
return [[m.A11,m.A12,m.A13],[m.A21,m.A22,m.A23],[m.A31,m.A32,m.A33]]
|
|
|
|
def multiplymat(l,r):
|
|
"""multiply matrices given as lists of row vectors"""
|
|
rt=zip(*r) #transpose r
|
|
mat=[]
|
|
for y in range(len(rt)):
|
|
mline=[]
|
|
for x in range(len(l)):
|
|
mline.append(sum([le*re for le,re in zip(l[y],rt[x])]))
|
|
mat.append(mline)
|
|
return mat
|
|
|
|
def isorthogonal(submatrix,precision=4):
|
|
"""checking if 3x3 Matrix is ortogonal (M*Transp(M)==I)"""
|
|
prod=multiplymat(submatrix,zip(*submatrix))
|
|
return [[round(f,precision) for f in line] for line in prod]==[[1,0,0],[0,1,0],[0,0,1]]
|
|
|
|
def detsubmatrix(s):
|
|
"""get the determinant of a 3x3 Matrix given as list of row vectors"""
|
|
return s[0][0]*s[1][1]*s[2][2]+s[0][1]*s[1][2]*s[2][0]+s[0][2]*s[1][0]*s[2][1]\
|
|
-s[2][0]*s[1][1]*s[0][2]-s[2][1]*s[1][2]*s[0][0]-s[2][2]*s[1][0]*s[0][1]
|
|
|
|
def isspecialorthogonalpython(submat,precision=4):
|
|
return isorthogonal(submat,precision) and round(detsubmatrix(submat),precision)==1
|
|
|
|
def isspecialorthogonal(mat,precision=4):
|
|
return abs(mat.submatrix(3).isOrthogonal(10**(-precision))-1.0) < 10**(-precision) and \
|
|
abs(mat.submatrix(3).determinant()-1.0) < 10**(-precision)
|