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constrainator.py
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/
constrainator.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
#****************************************************************************
## todo :
# ok 1) add a dialog to set tolerance and constraint type
# ok 2) remove only coincident and hor-vert pre-existent constraints
# ok 3) add constraints only if not already present a coincident constraint for that point
# ok 4) Line, Arcs, Bsplines, ArcOfEllipse are parsed
# 5) remove coindident bsplines (approx)
import FreeCAD, Part, Sketcher
from FreeCAD import Base
from math import sqrt
__ksuConstrainator_version__='1.2.3'
def sk_distance(p0, p1):
return sqrt((p0[0] - p1[0])**2 + (p0[1] - p1[1])**2)
#
def sanitizeSkBsp(s_name, dist_tolerance):
# s_name = 'Sketch001'
s=FreeCAD.ActiveDocument.getObject(s_name)
FreeCAD.Console.PrintWarning('check to sanitize\n')
if 'Sketcher' in s.TypeId:
FreeCAD.ActiveDocument.openTransaction('Sanitizing BSpline')
idx_to_del = []
geo_to_del = []
inverted=False
# check for duplicates in splines
# NB!!! Knots are not reliable here to check!!!
if 1: #len (s.Geometry) > 2: #cleaning algo approx valid for more than 2 splines
for i,g in enumerate (s.Geometry):
if 'BSplineCurve object' in str(g):
j=i+1
for bg in s.Geometry[(i + 1):]:
if 'BSplineCurve object' in str(bg):
if j not in idx_to_del:
if (len(g.getPoles()) == len(bg.getPoles())):
#print('equal pole nbrs')
eqp = True
if sk_distance(g.StartPoint,bg.StartPoint) > dist_tolerance:
if sk_distance(g.StartPoint,bg.EndPoint) > dist_tolerance:
eqp = False
if sk_distance(g.EndPoint,bg.EndPoint) > dist_tolerance:
if sk_distance(g.EndPoint,bg.StartPoint) > dist_tolerance:
eqp = False
if (eqp):
if sk_distance(g.StartPoint,bg.StartPoint) > dist_tolerance:
inverted=True
else:
inverted=False
print ('identical splines, inverted=',inverted )
#print(g.getPoles())
#print(bg.getPoles())
if j not in idx_to_del:
print ('len ',len(bg.getPoles()))
if inverted == False:
for k,kn in enumerate (bg.getPoles()):
#a = float(kn); b = float(g.KnotSequence[k])
#print(k)
a = kn; b = g.getPole(k+1)
#print(kn,g.getPole(k+1))
#print('dif ',(float(kn)-float(g.KnotSequence[k])))
#print('abs ',abs(float(kn)-float(g.KnotSequence[k])))
#print(a,b)
#print(a[0],a[1],a[2])
#print(b[0],b[1],b[2])
#print('dif ',abs(a[0]-b[0]),abs(a[1]-b[1]),abs(a[2]-b[2]))
#print('abs ',abs(a-b))
#if abs(float(kn)-float(g.KnotSequence[k])) > dist_tolerance:
if abs(a[0]-b[0]) > dist_tolerance or abs(a[1]-b[1]) > dist_tolerance or abs(a[2]-b[2]) > dist_tolerance:
print('node NOT coincident')
#print(a,b)
eqp=False
break # break the for loop
#print('next--')
else:
l = len(bg.getPoles())
for k,kn in enumerate (bg.getPoles()):
#a = float(kn); b = float(g.KnotSequence[k])
#print(k)
a = kn; b = g.getPole(l-k)
#print(kn,g.getPole(l-k))
#print('dif ',(float(kn)-float(g.KnotSequence[k])))
#print('abs ',abs(float(kn)-float(g.KnotSequence[k])))
#print(a,b)
#print(a[0],a[1],a[2])
#print(b[0],b[1],b[2])
#print('dif ',abs(a[0]-b[0]),abs(a[1]-b[1]),abs(a[2]-b[2]))
#print('abs ',abs(a-b))
#if abs(float(kn)-float(g.KnotSequence[k])) > dist_tolerance:
if abs(a[0]-b[0]) > dist_tolerance or abs(a[1]-b[1]) > dist_tolerance or abs(a[2]-b[2]) > dist_tolerance:
print('node NOT coincident')
#print(a,b)
eqp=False
break # break the for loop
#print('next--')
if (eqp):
idx_to_del.append(j)
j+=1
j=0
#print(idx_to_del)
if len(idx_to_del) >0:
FreeCAD.Console.PrintMessage(u'sanitizing '+s.Label)
FreeCAD.Console.PrintMessage('\n')
idx_to_del.sort()
#print(idx_to_del)
idx_to_del.reverse()
#print(idx_to_del)
#stop
for i, e in enumerate(idx_to_del):
#print('to delete ',s.Geometry[(e)],e)
print('deleting identical geo')
#print(s.Geometry)
s.delGeometry(e)
#print(s.Geometry)
FreeCAD.ActiveDocument.commitTransaction()
return s.Geometry
else:
return None
##
def sanitizeSk(s_name, edg_tol):
''' simplifying & sanitizing sketches '''
s=FreeCAD.ActiveDocument.getObject(s_name)
FreeCAD.Console.PrintWarning('check to sanitize\n')
# print(s.TypeId)
if 'Sketcher' in s.TypeId:
idx_to_del=[]
#print(s.Geometry)
for i,g in enumerate (s.Geometry):
#print(g,i)
# g.length()
#print('str(g)',str(g))
if 'Line' in str(g):
#print(g.length())
lng = sk_distance(g.StartPoint, g.EndPoint)
#print(lng)
if lng <= edg_tol:
print(g,i)
FreeCAD.Console.PrintWarning('too short\n')
idx_to_del.append(i)
if 'Circle' in str(g):
if g.Radius <= edg_tol:
print(g,i)
FreeCAD.Console.PrintWarning('too short\n')
idx_to_del.append(i)
if 'Arc' in str(g):
#print('str(g)',str(g))
#stop
lng = sk_distance(g.StartPoint, g.EndPoint)
#print(lng)
if lng <= edg_tol:
print(g,i)
FreeCAD.Console.PrintWarning('too short\n')
idx_to_del.append(i)
j=0
if len(idx_to_del) >0:
FreeCAD.Console.PrintWarning(u'sanitizing '+s.Label+'\n')
for i in idx_to_del:
s.delGeometry(i-j)
j+=1
else:
FreeCAD.Console.PrintMessage('nothing to sanitize\n')
##
def add_constraints(s_name, edge_tolerance, add_Constraints):
""" adding coincident points constraints """
s=FreeCAD.ActiveDocument.getObject(s_name)
FreeCAD.Console.PrintMessage('Constrainator version '+__ksuConstrainator_version__+'\n')
FreeCAD.Console.PrintMessage('adding '+add_Constraints+' constraints with '+str(edge_tolerance)+'mm tolerance\n' )
if hasattr(Part,"LineSegment"):
g_geom_points = {
Base.Vector: [1],
Part.LineSegment: [1, 2], # first point, last point
Part.Circle: [0, 3], # curve, center
Part.ArcOfCircle: [1, 2, 3], # first point, last point, center
Part.BSplineCurve: [0,1,2,3], # for poles
Part.ArcOfEllipse: [0,1,2,3], #
Part.Ellipse: [0,1], #
Part.ArcOfHyperbola: [0,1,2], #
Part.ArcOfParabola: [0,1,2], #
Part.Point: [0], #
}
else:
g_geom_points = {
Base.Vector: [1],
Part.Line: [1, 2], # first point, last point
Part.Circle: [0, 3], # curve, center
Part.ArcOfCircle: [1, 2, 3], # first point, last point, center
Part.BSplineCurve: [0,1,2,3], # for poles
Part.ArcOfEllipse: [0,1,2,3], #
Part.Point: [0], #
}
points=[]
geoms=[]
#print len((s.Geometry))
#stop
for geom_index in range(len((s.Geometry))):
if hasattr(s,'GeometryFacadeList'):
# Gm = s.GeometryFacadeList.Geometry
Gc = s.GeometryFacadeList
else:
# Gm = s.Geometry
Gc = s.Geometry
#if not(s.Geometry[geom_index].Construction):
if not(Gc[geom_index].Construction):
point_indexes = g_geom_points[type(s.Geometry[geom_index])]
#sayerr(point_indexes), say (geom_index)
#if 'Line' in type(PCB_Sketch.Geometry[geom_index]).__name__:
if 'ArcOfCircle' in type(s.Geometry[geom_index]).__name__\
or 'Line' in type(s.Geometry[geom_index]).__name__:
point1 = s.getPoint(geom_index, point_indexes[0])
#sayerr(str(point1[0])+';'+str(point1[1]))
point2 = s.getPoint(geom_index, point_indexes[1])
#sayw(str(point2[0])+';'+str(point1[1]))
#points.append([[point1[0],point1[1]],[geom_index],[1]])
#points.append([[point2[0],point2[1]],[geom_index],[2]])
#points.append([[point1[0],point1[1]],[geom_index]]) #,[1]])
#points.append([[point2[0],point2[1]],[geom_index]]) #,[2]])
if 'Line' in type(s.Geometry[geom_index]).__name__:
tp = 'Line'
else:
tp = 'Arc'
geoms.append([point1[0],point1[1],point2[0],point2[1],tp])
elif 'ArcOfEllipse' in type(s.Geometry[geom_index]).__name__\
or 'ArcOfHyperbola' in type(s.Geometry[geom_index]).__name__\
or 'ArcOfParabola' in type(s.Geometry[geom_index]).__name__:
point1 = s.getPoint(geom_index, point_indexes[1])
point2 = s.getPoint(geom_index, point_indexes[2])
tp = 'Arc'
geoms.append([point1[0],point1[1],point2[0],point2[1],tp])
elif 'Ellipse' in type(s.Geometry[geom_index]).__name__:
pass
elif 'Point' in type(s.Geometry[geom_index]).__name__:
pass
#
#print geom
sk_constraints = []
cnt=1
# print addConstraints, ' constraints'
# stop
if add_Constraints=='all':
if hasattr (FreeCAD.ActiveDocument.getObject(s_name), "autoconstraint"):
FreeCAD.Console.PrintWarning('using constrainator -> coincident\n')
sanitizeSk(s_name, edge_tolerance)
sk1=FreeCAD.ActiveDocument.getObject(s_name)
sk1.detectMissingPointOnPointConstraints(edge_tolerance)
sk1.makeMissingPointOnPointCoincident()
FreeCAD.activeDocument().recompute()
sk1.autoRemoveRedundants(True)
sk1.solve()
FreeCAD.activeDocument().recompute()
FreeCAD.Console.PrintWarning('using constrainator -> H&V\n')
for i, geo in enumerate(geoms):
#for i in range(len(geom)):
p_g0_0=[geo[0],geo[1]]
p_g0_1=[geo[2],geo[3]]
#print p_g0_0,pg_g0_1
#sayw(abs(p_g0_0[0]-p_g0_1[0]))
if abs(p_g0_0[0]-p_g0_1[0])< edge_tolerance and geo[4] == 'Line':
#s.addConstraint(Sketcher.Constraint('Vertical',i))
sk_constraints.append(Sketcher.Constraint('Vertical',i))
elif abs(p_g0_0[1]-p_g0_1[1])< edge_tolerance and geo[4] == 'Line':
#s.addConstraint(Sketcher.Constraint('Horizontal',i))
sk_constraints.append(Sketcher.Constraint('Horizontal',i))
j=i+1
else:
for i, geo in enumerate(geoms):
#for i in range(len(geom)):
p_g0_0=[geo[0],geo[1]]
p_g0_1=[geo[2],geo[3]]
#print p_g0_0,pg_g0_1
#sayw(abs(p_g0_0[0]-p_g0_1[0]))
if abs(p_g0_0[0]-p_g0_1[0])< edge_tolerance and geo[4] == 'Line':
#s.addConstraint(Sketcher.Constraint('Vertical',i))
sk_constraints.append(Sketcher.Constraint('Vertical',i))
elif abs(p_g0_0[1]-p_g0_1[1])< edge_tolerance and geo[4] == 'Line':
#s.addConstraint(Sketcher.Constraint('Horizontal',i))
sk_constraints.append(Sketcher.Constraint('Horizontal',i))
j=i+1
FreeCAD.Console.PrintWarning('using old constrainator\n')
for geo2 in geoms[(i + 1):]:
p_g1_0=[geo2[0],geo2[1]]
p_g1_1=[geo2[2],geo2[3]]
#rint p_g0_0, p_g0_1
#rint p_g1_0, p_g1_1
if sk_distance(p_g0_0,p_g1_0)< edge_tolerance:
##App.ActiveDocument.PCB_Sketch.addConstraint(Sketcher.Constraint('Coincident',0,2,3,1))
#s.addConstraint(Sketcher.Constraint('Coincident',i,1,j,1))
sk_constraints.append(Sketcher.Constraint('Coincident',i,1,j,1))
#print i,1,i+1,1
elif sk_distance(p_g0_0,p_g1_1)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,1,j,2))
sk_constraints.append(Sketcher.Constraint('Coincident',i,1,j,2))
#print i,1,i+1,2
elif sk_distance(p_g0_1,p_g1_0)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,2,j,1))
sk_constraints.append(Sketcher.Constraint('Coincident',i,2,j,1))
#print i,2,i+1,1
elif sk_distance(p_g0_1,p_g1_1)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,2,j,2))
sk_constraints.append(Sketcher.Constraint('Coincident',i,2,j,2))
#print i,2,i+1,2
j=j+1
cnt=cnt+1
elif add_Constraints=='coincident':
if hasattr (FreeCAD.ActiveDocument.getObject(s_name), "autoconstraint"):
FreeCAD.Console.PrintWarning('using constrainator\n')
sanitizeSk(s_name, edge_tolerance)
sk1=FreeCAD.ActiveDocument.getObject(s_name)
sk1.detectMissingPointOnPointConstraints(edge_tolerance)
sk1.makeMissingPointOnPointCoincident()
FreeCAD.activeDocument().recompute()
sk1.autoRemoveRedundants(True)
sk1.solve()
FreeCAD.activeDocument().recompute()
else:
FreeCAD.Console.PrintWarning('using old constrainator\n')
for i, geo in enumerate(geoms):
#for i in range(len(geom)):
p_g0_0=[geo[0],geo[1]]
p_g0_1=[geo[2],geo[3]]
#print p_g0_0,pg_g0_1
#if add_Constraints=='all':
# if abs(p_g0_0[0]-p_g0_1[0])< edge_tolerance:
# s.addConstraint(Sketcher.Constraint('Vertical',i))
# elif abs(p_g0_0[1]-p_g0_1[1])< edge_tolerance:
# s.addConstraint(Sketcher.Constraint('Horizontal',i))
j=i+1
for geo2 in geoms[(i + 1):]:
p_g1_0=[geo2[0],geo2[1]]
p_g1_1=[geo2[2],geo2[3]]
#rint p_g0_0, p_g0_1
#rint p_g1_0, p_g1_1
if sk_distance(p_g0_0,p_g1_0)< edge_tolerance:
##App.ActiveDocument.PCB_Sketch.addConstraint(Sketcher.Constraint('Coincident',0,2,3,1))
#s.addConstraint(Sketcher.Constraint('Coincident',i,1,j,1))
sk_constraints.append(Sketcher.Constraint('Coincident',i,1,j,1))
#print i,1,i+1,1
elif sk_distance(p_g0_0,p_g1_1)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,1,j,2))
sk_constraints.append(Sketcher.Constraint('Coincident',i,1,j,2))
#print i,1,i+1,2
elif sk_distance(p_g0_1,p_g1_0)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,2,j,1))
sk_constraints.append(Sketcher.Constraint('Coincident',i,2,j,1))
#print i,2,i+1,1
elif sk_distance(p_g0_1,p_g1_1)< edge_tolerance:
#s.addConstraint(Sketcher.Constraint('Coincident',i,2,j,2))
sk_constraints.append(Sketcher.Constraint('Coincident',i,2,j,2))
#print i,2,i+1,2
j=j+1
cnt=cnt+1
if len(sk_constraints) > 0:
old_sk_constraints = []
for c in s.Constraints:
#sayw(c)
#if add_Constraints=='coincident':
# say('c')
if (add_Constraints == "coincident"):
if ("Coincident" not in str(c)):
old_sk_constraints.append(c)
#say('appending '+str(c))
elif (add_Constraints=='all'):
if hasattr (FreeCAD.ActiveDocument.getObject(s_name), "autoconstraint"):
if ('Vertical' not in str(c)) and ('Horizontal' not in str(c)):
old_sk_constraints.append(c)
elif ('Coincident' not in str(c)) and ('Vertical' not in str(c)) and ('Horizontal' not in str(c)):
old_sk_constraints.append(c)
#say('appending all '+str(c))
s.Constraints = []
#sayw(old_sk_constraints)
for oc in old_sk_constraints:
sk_constraints.append(oc)
#say(sk_constraints)
s.addConstraint(sk_constraints)
FreeCAD.ActiveDocument.recompute()
#print 'counter ',cnt
#print geo2
###