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a2plib.py
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a2plib.py
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#***************************************************************************
#* *
#* Copyright (c) 2018 kbwbe *
#* *
#* Portions of code based on hamish's assembly 2 *
#* *
#* 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 *
#* *
#***************************************************************************
import FreeCAD
import FreeCADGui
from FreeCAD import Base
import Part
from PySide import QtGui
from PySide import QtCore
import os
import sys
import copy
import platform
import numpy
from pivy import coin
from a2p_translateUtils import *
PYVERSION = sys.version_info[0]
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
USE_PROJECTFILE = preferences.GetBool('useProjectFolder', False)
PARTIAL_PROCESSING_ENABLED = preferences.GetBool('usePartialSolver', True)
AUTOSOLVE_ENABLED = preferences.GetBool('autoSolve', True)
RELATIVE_PATHES_ENABLED = preferences.GetBool('useRelativePathes',True)
FORCE_FIXED_POSITION = preferences.GetBool('forceFixedPosition',True)
SHOW_CONSTRAINTS_ON_TOOLBAR= preferences.GetBool('showConstraintsOnToolbar',True)
RECURSIVE_UPDATE_ENABLED = preferences.GetBool('enableRecursiveUpdate',False)
USE_SOLID_UNION = preferences.GetBool('useSolidUnion',True)
# if SIMULATION_STATE == True assemblies are solved with less accuracy
SIMULATION_STATE = False
SAVED_TRANSPARENCY = []
path_a2p = os.path.dirname(__file__)
path_a2p_resources = os.path.join( path_a2p, 'GuiA2p', 'Resources', 'resources.rcc')
resourcesLoaded = QtCore.QResource.registerResource(path_a2p_resources)
assert resourcesLoaded
wb_globals = {}
RED = (1.0,0.0,0.0)
GREEN = (0.0,1.0,0.0)
BLUE = (0.0,0.0,1.0)
YELLOW = (1.0,1.0,0.0)
WHITE = (1.0,1.0,1.0)
BLACK = (0.0,0.0,0.0)
# DEFINE DEBUG LEVELS FOR CONSOLE OUTPUT
A2P_DEBUG_NONE = 0
A2P_DEBUG_1 = 1
A2P_DEBUG_2 = 2
A2P_DEBUG_3 = 3
#===================================================
# do debug settings here:
#===================================================
A2P_DEBUG_LEVEL = A2P_DEBUG_NONE #normal: A2P_DEBUG_NONE
GRAPHICALDEBUG = False #normal: False
# for debug purposes
# 0:normal
# 1:one step in each worklist
# 2:one step in first worklist
SOLVER_ONESTEP = 0 #normal: 0
#===================================================
solver_debug_objects = [] #collect solver 3d output for later removal
#===================================================
PARTIAL_SOLVE_STAGE1 = 1 #solve all rigid fully constrained to tempfixed rigid, enable only involved dep, then set them as tempfixed
CONSTRAINT_DIALOG_REF = None
CONSTRAINT_EDITOR__REF = None
CONSTRAINT_VIEWMODE = False
# This Icon map is necessary to show correct icons within very old assemblies
A2P_CONSTRAINTS_ICON_MAP = {
# constraintType: iconPath
'pointIdentity': ':/icons/a2p_PointIdentity.svg',
'pointOnLine': ':/icons/a2p_PointOnLineConstraint.svg',
'pointOnPlane': ':/icons/a2p_PointOnPlaneConstraint.svg',
'circularEdge': ':/icons/a2p_CircularEdgeConstraint.svg',
'axial': ':/icons/a2p_AxialConstraint.svg',
'axisParallel': ':/icons/a2p_AxisParallelConstraint.svg',
'axisPlaneParallel': ':/icons/a2p_AxisPlaneParallelConstraint.svg',
'axisPlaneNormal': ':/icons/a2p_AxisPlaneNormalConstraint.svg',
'axisPlaneAngle': ':/icons/a2p_AxisPlaneAngleConstraint.svg',
'planesParallel': ':/icons/a2p_PlanesParallelConstraint.svg',
'plane': ':/icons/a2p_PlaneCoincidentConstraint.svg',
'angledPlanes': ':/icons/a2p_AngleConstraint.svg',
'sphereCenterIdent': ':/icons/a2p_SphericalSurfaceConstraint.svg',
'CenterOfMass': ':/icons/a2p_CenterOfMassConstraint.svg'
}
#------------------------------------------------------------------------------
# Detect the operating system...
#------------------------------------------------------------------------------
tmp = platform.system()
tmp = tmp.upper()
tmp = tmp.split(' ')
OPERATING_SYSTEM = 'UNKNOWN'
if "WINDOWS" in tmp:
OPERATING_SYSTEM = "WINDOWS"
elif "LINUX" in tmp:
OPERATING_SYSTEM = "LINUX"
else:
OPERATING_SYSTEM = "OTHER"
#------------------------------------------------------------------------------
def getLanguagePath():
return os.path.join(os.path.dirname(os.path.dirname(__file__)),"translations")
#------------------------------------------------------------------------------
def drawDebugVectorAt(position,direction,rgbColor):
"""
Function draws a vector directly to 3D view using pivy/Coin.
expects position and direction as Base.vector type
color as tuple like (1,0,0)
"""
color = coin.SoBaseColor()
color.rgb = rgbColor
# Line style.
lineStyle = coin.SoDrawStyle()
lineStyle.style = coin.SoDrawStyle.LINES
lineStyle.lineWidth = 2
points = coin.SoCoordinate3()
lines = coin.SoLineSet()
startPoint = position.x,position.y,position.z
ep = position.add(direction)
endPoint = ep.x,ep.y,ep.z
points.point.values = (startPoint,endPoint)
#create and feed data to separator
sep=coin.SoSeparator()
sep.addChild(points)
sep.addChild(color)
sep.addChild(lineStyle)
sep.addChild(lines)
#add separator to sceneGraph
sg = FreeCADGui.ActiveDocument.ActiveView.getSceneGraph()
sg.addChild(sep)
solver_debug_objects.append(sep)
#------------------------------------------------------------------------------
def isGlobalVisible(ob):
"""
Part containers do not propagate visibility to all its childs.
This function checks, whether at least one Part container is invisible in tree
upwards direction.
This function returns always true, except one Part- or Group-Container
in tree-structure above is invisible
"""
result = True
#remove constraints from the InList
inList = []
for i in ob.InList:
if isA2pConstraint(i): continue
inList.append(i)
if len(inList) == 0:
if (
ob.Name.startswith('Group') or
ob.Name.startswith('Part')
):
return ob.ViewObject.Visibility # break the recursion
elif len(inList) == 1:
if (
inList[0].Name.startswith('Group') or
inList[0].Name.startswith('Part')
):
if inList[0].ViewObject.Visibility == False:
return False # break instantly
# do search in tree upwards
result = isGlobalVisible(inList[0])
return result
#------------------------------------------------------------------------------
def to_bytes(tx):
if PYVERSION > 2:
if isinstance(tx, str):
value = tx.encode("utf-8")
else:
value = tx
else:
if isinstance(tx,unicode):
value = tx.encode("utf-8")
else:
value = tx
return value # Instance of bytes
#------------------------------------------------------------------------------
def to_str(tx):
if PYVERSION > 2:
if isinstance(tx, bytes):
value = tx.decode("utf-8")
else:
value = tx
else:
if isinstance(tx, unicode):
value = tx
else:
value = tx.decode("utf-8")
return value # Instance of unicode string
#------------------------------------------------------------------------------
def setSimulationState(boolVal):
global SIMULATION_STATE
SIMULATION_STATE = boolVal
#------------------------------------------------------------------------------
def doNotImportInvisibleShapes():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('doNotImportInvisibleShapes',True)
#------------------------------------------------------------------------------
def getPerFaceTransparency():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('usePerFaceTransparency',False)
#------------------------------------------------------------------------------
def getNativeFileManagerUsage():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('useNativeFileManager',False)
#------------------------------------------------------------------------------
def getRecalculateImportedParts():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('recalculateImportedParts',False)
#------------------------------------------------------------------------------
def getRecursiveUpdateEnabled():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('enableRecursiveUpdate',False)
#------------------------------------------------------------------------------
def getForceFixedPosition():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('forceFixedPosition',False)
#------------------------------------------------------------------------------
def getUseSolidUnion():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('useSolidUnion',False)
#------------------------------------------------------------------------------
def getConstraintEditorRef():
global CONSTRAINT_EDITOR__REF
return CONSTRAINT_EDITOR__REF
#------------------------------------------------------------------------------
def setConstraintEditorRef(ref):
global CONSTRAINT_EDITOR__REF
CONSTRAINT_EDITOR__REF = ref
#------------------------------------------------------------------------------
def setConstraintViewMode(active):
global CONSTRAINT_VIEWMODE
CONSTRAINT_VIEWMODE = active
#------------------------------------------------------------------------------
def getConstraintViewMode():
global CONSTRAINT_VIEWMODE
return CONSTRAINT_VIEWMODE
#------------------------------------------------------------------------------
def getConstraintDialogRef():
global CONSTRAINT_DIALOG_REF
return CONSTRAINT_DIALOG_REF
#------------------------------------------------------------------------------
def setConstraintDialogRef(ref):
global CONSTRAINT_DIALOG_REF
CONSTRAINT_DIALOG_REF = ref
#------------------------------------------------------------------------------
def getUseTopoNaming():
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
return preferences.GetBool('useTopoNaming',False)
#------------------------------------------------------------------------------
def getRelativePathesEnabled():
global RELATIVE_PATHES_ENABLED
return RELATIVE_PATHES_ENABLED
#------------------------------------------------------------------------------
def setAutoSolve(enabled):
global AUTOSOLVE_ENABLED
AUTOSOLVE_ENABLED = enabled
#------------------------------------------------------------------------------
def getAutoSolveState():
return AUTOSOLVE_ENABLED
#------------------------------------------------------------------------------
def setPartialProcessing(enabled):
global PARTIAL_PROCESSING_ENABLED
PARTIAL_PROCESSING_ENABLED = enabled
#------------------------------------------------------------------------------
def isPartialProcessing():
return PARTIAL_PROCESSING_ENABLED
#------------------------------------------------------------------------------
def filterShapeObs(_list, allowSketches=False):
lst = []
for ob in _list:
if allowSketches == True:
if ob.Name.startswith("Sketch"):
lst.append(ob)
continue
if (
#Following object now have App::GeoFeatureGroupExtension in FC0.19
#prevent them from being filtered out.
ob.Name.startswith("Boolean") or
ob.Name.startswith("Body")
):
pass
elif ob.hasExtension('App::GeoFeatureGroupExtension'):
#Part Containers within FC0.19.18405 seem to have a shape property..
#filter it out
continue
elif ob.Name.startswith("Group"):
#Group Containers within FC0.19 (Release >= 2020/03/31) seem to have a shape property..
#filter it out
continue
if hasattr(ob,"Shape") and ob.Shape is not None and ob.Shape != 'None': #str 'None': TechDraw Balloons...
if len(ob.Shape.Faces) > 0 and len(ob.Shape.Vertexes) > 0:
lst.append(ob)
S = set(lst)
lst = []
lst.extend(S)
return lst
#------------------------------------------------------------------------------
def setTransparency():
global SAVED_TRANSPARENCY
# Save Transparency of Objects and make all transparent
doc = FreeCAD.ActiveDocument
if len(SAVED_TRANSPARENCY) > 0:
# Transparency is already saved, no need to set transparency again
return
shapedObs = filterShapeObs(doc.Objects) # filter out partlist, spreadsheets etc..
sel = FreeCADGui.Selection
for obj in shapedObs:
if hasattr(obj,'ViewObject'): # save "all-in" *MK
if hasattr(obj.ViewObject,'DiffuseColor'):
SAVED_TRANSPARENCY.append(
(obj.Name, obj.ViewObject.Transparency, obj.ViewObject.ShapeColor, obj.ViewObject.DiffuseColor)
)
else:
SAVED_TRANSPARENCY.append(
(obj.Name, obj.ViewObject.Transparency, obj.ViewObject.ShapeColor, None)
)
obj.ViewObject.Transparency = 80
sel.addSelection(obj) # Transparency workaround. Transparency is taken when once been selected
sel.clearSelection()
#------------------------------------------------------------------------------
def restoreTransparency():
global SAVED_TRANSPARENCY
# restore transparency of objects...
doc = FreeCAD.ActiveDocument
sel = FreeCADGui.Selection
for setting in SAVED_TRANSPARENCY:
obj = doc.getObject(setting[0])
if obj is not None: # restore "all-in" *MK
obj.ViewObject.Transparency = setting[1]
obj.ViewObject.ShapeColor = setting[2]
obj.ViewObject.DiffuseColor = setting[3] # diffuse always at last
sel.addSelection(obj)
sel.clearSelection()
SAVED_TRANSPARENCY = []
#------------------------------------------------------------------------------
def isTransparencyEnabled():
global SAVED_TRANSPARENCY
return (len(SAVED_TRANSPARENCY) > 0)
#------------------------------------------------------------------------------
def getSelectedConstraint():
# Check that constraint is selected
selection = [s for s in FreeCADGui.Selection.getSelection() if s.Document == FreeCAD.ActiveDocument ]
if len(selection) == 0: return None
connectionToView = selection[0]
if not 'ConstraintInfo' in connectionToView.Content and not 'ConstraintNfo' in connectionToView.Content:
return None
return connectionToView
#------------------------------------------------------------------------------
def appVersionStr():
version = int(FreeCAD.Version()[0])
subVersion = int(float(FreeCAD.Version()[1]))
return "%03d.%03d" %(version,subVersion)
#------------------------------------------------------------------------------
def numpyVecToFC(nv):
assert len(nv) == 3
return Base.Vector(nv[0],nv[1],nv[2])
#------------------------------------------------------------------------------
def fit_rotation_axis_to_surface1( surface, n_u=3, n_v=3 ):
'should work for cylinders and possibly cones (depending on the u,v mapping)'
uv = sum( [ [ (u,v) for u in numpy.linspace(0,1,n_u)] for v in numpy.linspace(0,1,n_v) ], [] )
P = [ numpy.array(surface.value(u,v)) for u,v in uv ] #positions at u,v points
N = [ numpy.cross( *surface.tangent(u,v) ) for u,v in uv ]
intersections = []
for i in range(len(N)-1):
for j in range(i+1,len(N)):
# based on the distance_between_axes( p1, u1, p2, u2) function,
if 1 - abs(numpy.dot( N[i], N[j])) < 10**-6:
continue #ignore parallel case
p1_x, p1_y, p1_z = P[i]
u1_x, u1_y, u1_z = N[i]
p2_x, p2_y, p2_z = P[j]
u2_x, u2_y, u2_z = N[j]
t1_t1_coef = u1_x**2 + u1_y**2 + u1_z**2 #should equal 1
t1_t2_coef = -2*u1_x*u2_x - 2*u1_y*u2_y - 2*u1_z*u2_z # collect( expand(d_sqrd), [t1*t2] )
t2_t2_coef = u2_x**2 + u2_y**2 + u2_z**2 #should equal 1 too
t1_coef = 2*p1_x*u1_x + 2*p1_y*u1_y + 2*p1_z*u1_z - 2*p2_x*u1_x - 2*p2_y*u1_y - 2*p2_z*u1_z
t2_coef =-2*p1_x*u2_x - 2*p1_y*u2_y - 2*p1_z*u2_z + 2*p2_x*u2_x + 2*p2_y*u2_y + 2*p2_z*u2_z
A = numpy.array([ [ 2*t1_t1_coef , t1_t2_coef ] , [ t1_t2_coef, 2*t2_t2_coef ] ])
b = numpy.array([ t1_coef, t2_coef])
try:
t1, t2 = numpy.linalg.solve(A,-b)
except numpy.linalg.LinAlgError:
continue #print('distance_between_axes, failed to solve problem due to LinAlgError, using numerical solver instead')
pos_t1 = P[i] + numpy.array(N[i])*t1
pos_t2 = P[j] + N[j]*t2
intersections.append( pos_t1 )
intersections.append( pos_t2 )
if len(intersections) < 2:
error = numpy.inf
return None, None, error
else: #fit vector to intersection points; http://mathforum.org/library/drmath/view/69103.html
X = numpy.array(intersections)
centroid = numpy.mean(X,axis=0)
M = numpy.array([i - centroid for i in intersections ])
A = numpy.dot(M.transpose(), M)
U,s,V = numpy.linalg.svd(A) #numpy docs: s : (..., K) The singular values for every matrix, sorted in descending order.
axis_pos = centroid
axis_dir = V[0]
error = s[1] #dont know if this will work
return numpyVecToFC(axis_dir), numpyVecToFC(axis_pos), error
#------------------------------------------------------------------------------
def fit_plane_to_surface1( surface, n_u=3, n_v=3 ):
uv = sum( [ [ (u,v) for u in numpy.linspace(0,1,n_u)] for v in numpy.linspace(0,1,n_v) ], [] )
P = [ surface.value(u,v) for u,v in uv ] #positions at u,v points
N = [ numpy.cross( *surface.tangent(u,v) ) for u,v in uv ]
plane_norm = sum(N) / len(N) #planes normal, averaging done to reduce error
plane_pos = P[0]
error = sum([ abs( numpy.dot(p - plane_pos, plane_norm) ) for p in P ])
return numpyVecToFC(plane_norm), numpyVecToFC(plane_pos), error
#------------------------------------------------------------------------------
def isLine(param):
if hasattr(Part,"LineSegment"):
return isinstance(param,(Part.Line,Part.LineSegment))
else:
return isinstance(param,Part.Line)
#------------------------------------------------------------------------------
def getObjectFaceFromName( obj, faceName ):
assert faceName.startswith('Face')
ind = int( faceName[4:]) -1
return obj.Shape.Faces[ind]
#------------------------------------------------------------------------------
def getProjectFolder():
"""
#------------------------------------------------------------------------------------
# A new Parameter is required: projectFolder...
# All Parts will be searched below this projectFolder-Value...
#------------------------------------------------------------------------------------
"""
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
if not preferences.GetBool('useProjectFolder', False): return ""
return preferences.GetString('projectFolder', '~')
#------------------------------------------------------------------------------
def pathToOS(path):
if path is None: return None
p = to_str(path)
if OPERATING_SYSTEM == 'WINDOWS':
p = p.replace(u'/',u'\\')
else:
p = p.replace(u'\\',u'/')
return p # unicode string
#------------------------------------------------------------------------------
def findFile(_name, _path):
"""
Searches a file within a directory and its subdirectories.
"""
name = to_str(_name)
path = to_str(_path)
for root, dirs, files in os.walk(path):
if name in files:
return os.path.join(root, name)
return None
#------------------------------------------------------------------------------
def findSourceFileInProject(_pathImportPart, _assemblyPath):
"""
#------------------------------------------------------------------------------------
# interpret the sourcefile name of imported part
# if working with preference "useProjectFolder:
# - path of sourcefile is ignored
# - filename is looked up beneath projectFolder
#
# if not working with preference "useProjectFolder":
# - path of sourcefile is checked for being relative to assembly or absolute
# - path is interpreted in appropriate way
#------------------------------------------------------------------------------------
"""
pathImportPart = _pathImportPart
assemblyPath = _assemblyPath
pathImportPart = to_bytes(pathImportPart)
assemblyPath = to_bytes(assemblyPath)
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
if not preferences.GetBool('useProjectFolder', False):
# not working with useProjectFolder preference,
# check whether path is relative or absolute...
if (
pathImportPart.startswith(b'../') or
pathImportPart.startswith(b'..\\') or
pathImportPart.startswith(b'./') or
pathImportPart.startswith(b'.\\')
):
# relative path
# calculate the absolute path
p1 = to_str(assemblyPath)
p2 = to_str(pathImportPart)
joinedPath = os.path.join(p1,p2)
absolutePath = os.path.normpath(joinedPath)
absolutePath = pathToOS(absolutePath)
return to_str(absolutePath)
else:
pathImportPart = pathToOS(pathImportPart)
return to_str(pathImportPart)
projectFolder = os.path.abspath(getProjectFolder()) # get normalized path
fileName = os.path.basename(pathImportPart)
retval = findFile(fileName,projectFolder)
retval = pathToOS(retval)
if retval:
return to_str(retval)
else:
return None
#------------------------------------------------------------------------------
def checkFileIsInProjectFolder(path):
preferences = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/A2plus")
if not preferences.GetBool('useProjectFolder', False): return True
projectFolder = os.path.abspath(getProjectFolder()) # get normalized path
fileName = os.path.basename(path)
nameInProject = findFile(fileName,projectFolder)
if nameInProject == path:
return True
else:
return False
#------------------------------------------------------------------------------
def pathOfModule():
return os.path.dirname(__file__)
#------------------------------------------------------------------------------
def Msg(tx):
FreeCAD.Console.PrintMessage(tx)
#------------------------------------------------------------------------------
def DebugMsg(level, tx):
if A2P_DEBUG_LEVEL >= level:
FreeCAD.Console.PrintMessage(tx)
#------------------------------------------------------------------------------
def drawSphere(center, color):
doc = FreeCAD.ActiveDocument
s = Part.makeSphere(2.0,center)
sphere = doc.addObject("Part::Feature","Sphere")
sphere.Shape = s
sphere.ViewObject.ShapeColor = color
doc.recompute()
#------------------------------------------------------------------------------
def drawVector(fromPoint,toPoint, color):
if fromPoint == toPoint: return
doc = FreeCAD.ActiveDocument
l = Part.LineSegment()
l.StartPoint = fromPoint
l.EndPoint = toPoint
line = doc.addObject("Part::Feature","Line")
line.Shape = l.toShape()
line.ViewObject.LineColor = color
line.ViewObject.LineWidth = 1
c = Part.makeCone(0,1,4)
cone = doc.addObject("Part::Feature","ArrowHead")
cone.Shape = c
cone.ViewObject.ShapeColor = color
#
mov = Base.Vector(0,0,0)
zAxis = Base.Vector(0,0,-1)
rot = FreeCAD.Rotation(zAxis,toPoint.sub(fromPoint))
cent = Base.Vector(0,0,0)
conePlacement = FreeCAD.Placement(mov,rot,cent)
cone.Placement = conePlacement.multiply(cone.Placement)
cone.Placement.move(toPoint)
doc.recompute()
#------------------------------------------------------------------------------
def findUnusedObjectName(base, counterStart=1, fmt='%03i', document=None):
if document is None:
document = FreeCAD.ActiveDocument
i = counterStart
usedNames = [ obj.Name for obj in document.Objects ]
base2 = base
if base[-4:-3] == '_':
try:
int(base[-3:])
base2 = base[:-4]
except:
pass
base2 = base2 + '_'
objName = '%s%s' % (base2, fmt%i)
while objName in usedNames:
i += 1
objName = '%s%s' % (base2, fmt%i)
return objName
#------------------------------------------------------------------------------
def findUnusedObjectLabel(base, counterStart=1, fmt='%03i', document=None, extension=None):
if document is None:
document = FreeCAD.ActiveDocument
i = counterStart
usedLabels = [ obj.Label for obj in document.Objects ]
base2 = base
if base[-4:-3] == '_':
try:
int(base[-3:])
base2 = base[:-4]
except:
pass
base2 = base2 + '_'
if extension is None:
base3 = base2
else:
base3 = base2+extension+'_'
objLabel = '%s%s' % (base3, fmt%i)
while objLabel in usedLabels:
i += 1
objLabel = '%s%s' % (base3, fmt%i)
return objLabel
#------------------------------------------------------------------------------
class ConstraintSelectionObserver:
def __init__(self, selectionGate, parseSelectionFunction,
taskDialog_title, taskDialog_iconPath, taskDialog_text,
secondSelectionGate=None):
self.selections = []
self.parseSelectionFunction = parseSelectionFunction
self.secondSelectionGate = secondSelectionGate
FreeCADGui.Selection.addObserver(self)
FreeCADGui.Selection.removeSelectionGate()
FreeCADGui.Selection.addSelectionGate( selectionGate )
wb_globals['selectionObserver'] = self
self.taskDialog = SelectionTaskDialog(taskDialog_title, taskDialog_iconPath, taskDialog_text)
FreeCADGui.Control.showDialog( self.taskDialog )
def addSelection( self, docName, objName, sub, pnt ):
self.selections.append( SelectionRecord( docName, objName, sub ))
if len(self.selections) == 2:
self.stopSelectionObservation()
self.parseSelectionFunction( self.selections)
elif self.secondSelectionGate is not None and len(self.selections) == 1:
FreeCADGui.Selection.removeSelectionGate()
FreeCADGui.Selection.addSelectionGate( self.secondSelectionGate )
def stopSelectionObservation(self):
FreeCADGui.Selection.removeObserver(self)
del wb_globals['selectionObserver']
FreeCADGui.Selection.removeSelectionGate()
FreeCADGui.Control.closeDialog()
#------------------------------------------------------------------------------
class SelectionRecord:
def __init__(self, docName, objName, sub):
self.Document = FreeCAD.getDocument(docName)
self.ObjectName = objName
self.Object = self.Document.getObject(objName)
self.SubElementNames = [sub]
#------------------------------------------------------------------------------
class SelectionTaskDialog:
def __init__(self, title, iconPath, textLines ):
self.form = SelectionTaskDialogForm( textLines )
self.form.setWindowTitle( title )
if iconPath is not None:
self.form.setWindowIcon( QtGui.QIcon( iconPath ) )
def reject(self):
wb_globals['selectionObserver'].stopSelectionObservation()
def getStandardButtons(self): #http://forum.freecadweb.org/viewtopic.php?f=10&t=11801
return 0x00400000 #cancel button
#------------------------------------------------------------------------------
class SelectionTaskDialogForm(QtGui.QWidget):
def __init__(self, textLines ):
super(SelectionTaskDialogForm, self).__init__()
self.textLines = textLines
self.initUI()
def initUI(self):
vbox = QtGui.QVBoxLayout()
for line in self.textLines.split('\n'):
vbox.addWidget( QtGui.QLabel(line) )
self.setLayout(vbox)
#------------------------------------------------------------------------------
class SelectionExObject:
"""Allows for selection gate functions to interface with classification functions below."""
def __init__(self, doc, Object, subElementName):
self.doc = doc
self.Object = Object
self.ObjectName = Object.Name
self.SubElementNames = [subElementName]
#------------------------------------------------------------------------------
def getObjectEdgeFromName( obj, name ):
assert name.startswith('Edge')
ind = int( name[4:]) -1
return obj.Shape.Edges[ind]
#------------------------------------------------------------------------------
def CircularEdgeSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Edge'):
edge = getObjectEdgeFromName( selection.Object, subElement)
if not hasattr(edge, 'Curve'): #issue 39
return False
if isLine(edge.Curve):
return False
if hasattr( edge.Curve, 'Radius' ):
return True
# the following section fails for linear edges, protect it
# by try/except block
try:
BSpline = edge.Curve.toBSpline()
arcs = BSpline.toBiArcs(10**-6)
if all( hasattr(a,'Center') for a in arcs ):
centers = numpy.array([a.Center for a in arcs])
sigma = numpy.std( centers, axis=0 )
if max(sigma) < 10**-6: #then circular curve
return True
except:
pass
return False
#------------------------------------------------------------------------------
def ClosedEdgeSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Edge'):
edge = getObjectEdgeFromName( selection.Object, subElement)
if edge.isClosed():
return True
else:
return False
return False
#------------------------------------------------------------------------------
def AxisOfPlaneSelected( selection ): #adding Planes/Faces selection for Axial constraints
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Face'):
face = getObjectFaceFromName( selection.Object, subElement)
if str(face.Surface) == '<Plane object>':
return True
else:
axis, center, error = fit_rotation_axis_to_surface1(face.Surface)
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6:
return True
return False
#------------------------------------------------------------------------------
def printSelection(selection):
entries = []
for s in selection:
for e in s.SubElementNames:
entries.append(' - %s:%s' % (s.ObjectName, e))
if e.startswith('Face'):
ind = int( e[4:]) -1
face = s.Object.Shape.Faces[ind]
entries[-1] = entries[-1] + ' %s' % str(face.Surface)
return '\n'.join( entries[:5] )
#------------------------------------------------------------------------------
def updateObjectProperties( c ):
return
#------------------------------------------------------------------------------
def planeSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Face'):
face = getObjectFaceFromName( selection.Object, subElement)
if str(face.Surface) == '<Plane object>':
return True
elif str(face.Surface) == '<BSplineSurface object>':
normal,pos,error = fit_plane_to_surface1(face.Surface)
if abs(error) < 1e-9:
return True
return False
#------------------------------------------------------------------------------
def vertexSelected( selection ):
if len( selection.SubElementNames ) == 1:
return selection.SubElementNames[0].startswith('Vertex')
return False
#------------------------------------------------------------------------------
def cylindricalFaceSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Face'):
face = getObjectFaceFromName( selection.Object, subElement)
if hasattr(face.Surface,'Radius'):
return True
elif str(face.Surface).startswith('<SurfaceOfRevolution'):
return True
else:
axis, center, error = fit_rotation_axis_to_surface1(face.Surface)
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6:
return True
return False
#------------------------------------------------------------------------------
def LinearEdgeSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Edge'):
edge = getObjectEdgeFromName( selection.Object, subElement)
if not hasattr(edge, 'Curve'): #issue 39
return False
if isLine(edge.Curve):
return True
BSpline = edge.Curve.toBSpline()
arcs = BSpline.toBiArcs(10**-6)
if all(isLine(a) for a in arcs):
lines = arcs
D = numpy.array([L.tangent(0)[0] for L in lines]) #D(irections)
if numpy.std( D, axis=0 ).max() < 10**-9: #then linear curve
return True
return False
#------------------------------------------------------------------------------
def sphericalSurfaceSelected( selection ):
if len( selection.SubElementNames ) == 1:
subElement = selection.SubElementNames[0]
if subElement.startswith('Face'):
face = getObjectFaceFromName( selection.Object, subElement)
return str( face.Surface ).startswith('Sphere ')
return False
#------------------------------------------------------------------------------
def getObjectVertexFromName( obj, name ):
assert name.startswith('Vertex')
ind = int( name[6:]) -1
return obj.Shape.Vertexes[ind]
#------------------------------------------------------------------------------
def removeConstraint( constraint ):
'required as constraint.Proxy.onDelete only called when deleted through GUI'
doc = constraint.Document
if constraint.ViewObject is not None:
constraint.ViewObject.Proxy.onDelete( constraint.ViewObject, None ) # also removes mirror...
doc.removeObject( constraint.Name )
#------------------------------------------------------------------------------
def getPos(obj, subElementName):
pos = None
if subElementName.startswith('Face'):
face = getObjectFaceFromName(obj, subElementName)
surface = face.Surface
if str(surface) == '<Plane object>':
pos = getObjectFaceFromName(obj, subElementName).Faces[0].BoundBox.Center
# axial constraint for Planes
# pos = surface.Position
elif str(surface) == "<Cylinder object>":
pos = surface.Center
elif all( hasattr(surface,a) for a in ['Axis','Center','Radius'] ):
pos = surface.Center
elif str(surface).startswith('<SurfaceOfRevolution'):
pos = getObjectFaceFromName(obj, subElementName).Edges[0].Curve.Center
elif str(surface).startswith('<BSplineSurface'):
axis,pos1,error = fit_plane_to_surface1(surface)
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6: #then good plane fit
pos = pos1
axis, center, error = fit_rotation_axis_to_surface1(face.Surface)
if axis is not None:
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6: #then good rotation_axis fix
pos = center
elif subElementName.startswith('Edge'):
edge = getObjectEdgeFromName(obj, subElementName)
if isLine(edge.Curve):
if appVersionStr() <= "000.016":
pos = edge.Curve.StartPoint
else:
pos = edge.firstVertex(True).Point
elif hasattr( edge.Curve, 'Center'): #circular curve
pos = edge.Curve.Center
else:
BSpline = edge.Curve.toBSpline()
arcs = BSpline.toBiArcs(10**-6)
if all( hasattr(a,'Center') for a in arcs ):
centers = numpy.array([a.Center for a in arcs])
sigma = numpy.std( centers, axis=0 )
if max(sigma) < 10**-6: #then circular curve
pos = numpyVecToFC(centers[0])
if all(isLine(a) for a in arcs):
lines = arcs
D = numpy.array([L.tangent(0)[0] for L in lines]) #D(irections)
if numpy.std( D, axis=0 ).max() < 10**-9: #then linear curve
pos = lines[0].value(0)
elif subElementName.startswith('Vertex'):
pos = getObjectVertexFromName(obj, subElementName).Point
return pos # maybe none !!
#------------------------------------------------------------------------------
def getPlaneNormal(surface):
axis = None
if hasattr(surface,'Axis'):
axis = surface.Axis
elif str(surface).startswith('<BSplineSurface'):
axis,pos,error = fit_plane_to_surface1(surface)
return axis # may be none!
#------------------------------------------------------------------------------
def getAxis(obj, subElementName):
axis = None
if subElementName.startswith('Face'):
face = getObjectFaceFromName(obj, subElementName)
surface = face.Surface
if hasattr(surface,'Axis'):
axis = surface.Axis
elif str(surface).startswith('<SurfaceOfRevolution'):
axis = face.Edges[0].Curve.Axis
elif str(surface).startswith('<BSplineSurface'):
axis1,pos,error = fit_plane_to_surface1(surface)
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6: #then good plane fit
axis = axis1
axis_fitted, center, error = fit_rotation_axis_to_surface1(face.Surface)
if axis_fitted is not None:
error_normalized = error / face.BoundBox.DiagonalLength
if error_normalized < 10**-6: #then good rotation_axis fix
axis = axis_fitted
elif subElementName.startswith('Edge'):
edge = getObjectEdgeFromName(obj, subElementName)
if isLine(edge.Curve):
axis = edge.Curve.tangent(0)[0]
elif hasattr( edge.Curve, 'Axis'): #circular curve
axis = edge.Curve.Axis
else:
BSpline = edge.Curve.toBSpline()
arcs = BSpline.toBiArcs(10**-6)
if all( hasattr(a,'Center') for a in arcs ):
centers = numpy.array([a.Center for a in arcs])
sigma = numpy.std( centers, axis=0 )
if max(sigma) < 10**-6: #then circular curve
axis = arcs[0].Axis
if all(isLine(a) for a in arcs):
lines = arcs
D = numpy.array([L.tangent(0)[0] for L in lines]) #D(irections)
if numpy.std( D, axis=0 ).max() < 10**-9: #then linear curve
axis = numpyVecToFC(D[0])
return axis # may be none!
#------------------------------------------------------------------------------