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Copy pathspb_Crv_match.py
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1516 lines (1235 loc) · 55.2 KB
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#! python 2
from __future__ import absolute_import, division, print_function, unicode_literals
"""
Notes on UI's _Match:
A unitized tangent vector, as obtained with Curve.CurvatureAt, seems to be used for
Tangent and Curvature matches (at least with Average disabled)
For Tangent matches, NurbsCurve.SetEndCondition results are identical.
For Curvature matches, identical results were not found but were closer when using
the unitized tangent vector than when using the 1st derivative vector of Curve B directly.
Send any questions, comments, or script development service needs to
@spb on the McNeel Forums ( https://discourse.mcneel.com/ ).
"""
"""
190708-25: Created.
190824: Now, a unit vector is used when target continuity is G1. Otherwise, SetEndCondition may move the control point quite far from the closest possible position.
Added curve deviation feedback.
190831: Now tests whether joint is already at desired continuity before calculating new curve(s).
190907: Refactored. Added bLimitCrvDev and fDevTol.
190908-12: More refactoring and optimization of curves.
190913: Added sContinuity in place of iContinuity in most functions. Various debugging and refactoring.
190918: createForCurveA: Now curves with dev of None will not pass.
createForBothCurves is functional for position and tangency continuities.
190919: Bug fix.
190924, 1010, 1020: Import-related update.
191208: Printed output bug fix.
200112-16: Updated Opts to latest code format. Import-related updates.
200120: Refactored, nesting some functions for simpler outside code calling this module.
200505: Import-related updates.
200630: Now correctly compares control point positions between curves of different degrees for C1 matching.
Improved printed feedback when curve is not modified.
201122, 210908: Import-related updates.
211029: Simplified curve to modify option from 3 to 2 choices. Added fAngleTol_Deg.
220328, 0425, 1122: Import-related update.
230721: Bug fix.
230723: Bug fix. Now, entering '0', '1', or '2' will set continuity target to 'G0', 'G1', or 'G2', respectively.
260915-16: Import-related update.
TODO:
When the endpoints intially do not match, try Curve.Extend first since this may result in less deviation.
Try to adjust for G1 to same G0G1 length as original curve. Check its deviation against SetEndCondition result.
Determine whether to keep C1 continuity (and add C2).
If so, one scenario is to set all curve domains to [0.0,1.0] before matching.
"""
import Rhino
import Rhino.Geometry as rg
import Rhino.Input as ri
import scriptcontext as sc
from System import Enum
from System import Guid
from System.Drawing import Color
import spb_Crv_continuityBetween2
import spb_RebuildCrvUniform
import spb_Crv_inflections
import spb_Crv_radiusMinima
import spb_NurbsCrv_maximizeMinimumRadius
sOpts_Continuity = ['G0', 'G1', 'C1', 'G2']
class Opts():
keys = []
values = {}
names = {}
riOpts = {}
riAddOpts = {}
stickyKeys = {}
def addOptionDouble(key, names, riOpts):
return lambda getObj: ri.Custom.GetBaseClass.AddOptionDouble(
getObj, englishName=names[key], numberValue=riOpts[key])
def addOptionInteger(key, names, riOpts):
return lambda getObj: ri.Custom.GetBaseClass.AddOptionInteger(
getObj, englishName=names[key], intValue=riOpts[key])
def addOptionList(key, names, listValues, values):
return lambda getObj: ri.Custom.GetBaseClass.AddOptionList(
getObj,
englishOptionName=names[key],
listValues=listValues,
listCurrentIndex=values[key])
def addOptionToggle(key, names, riOpts):
return lambda getObj: ri.Custom.GetBaseClass.AddOptionToggle(
getObj, englishName=names[key], toggleValue=riOpts[key])
key = 'iContinuity'; keys.append(key)
values[key] = 1
riAddOpts[key] = addOptionList(key, names, sOpts_Continuity, values)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'fAngleTol_Deg'; keys.append(key)
values[key] = 0.1 * sc.doc.ModelAngleToleranceDegrees
names[key] = 'AngleTol'
riOpts[key] = ri.Custom.OptionDouble(values[key])
riAddOpts[key] = addOptionDouble(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bSkipIfAlreadyAtContinuity'; keys.append(key)
values[key] = True
names[key] = 'IfAlreadyAtContinuity'
riOpts[key] = ri.Custom.OptionToggle(values[key], 'Process', 'Skip')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'iPreserveOtherEnd'; keys.append(key)
values[key] = 2
names[key] = 'PreserveOtherEnd'
riAddOpts[key] = addOptionList(key, names,
Enum.GetNames(rg.NurbsCurve.NurbsCurveEndConditionType),
values)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bLimitCrvDev'; keys.append(key)
values[key] = True
riOpts[key] = ri.Custom.OptionToggle(values[key], 'No', 'Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'fDevTol'; keys.append(key)
values[key] = 0.1 * sc.doc.ModelAbsoluteTolerance
riOpts[key] = ri.Custom.OptionDouble(initialValue=values[key])
riAddOpts[key] = addOptionDouble(key, names, riOpts)
stickyKeys[key] = '{}({})({})'.format(key, __file__, sc.doc.Name)
key = 'bMaximizeMinRadius'; keys.append(key)
values[key] = False
riOpts[key] = ri.Custom.OptionToggle(values[key], 'No', 'Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bModOnly1stPicked'; keys.append(key)
values[key] = True
names[key] = 'ModifyCrv'
riOpts[key] = ri.Custom.OptionToggle(initialValue=values[key], offValue='EitherOrBoth', onValue='Only1stPicked')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bDeformLines'; keys.append(key)
values[key] = False
riOpts[key] = ri.Custom.OptionToggle(initialValue=values[key], offValue='No', onValue='Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bRebuildRationals'; keys.append(key)
values[key] = False
riOpts[key] = ri.Custom.OptionToggle(initialValue=values[key], offValue='No', onValue='Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bReplace'; keys.append(key)
values[key] = True
names[key] = 'Action'
riOpts[key] = ri.Custom.OptionToggle(values[key], 'Add', 'Replace')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bEcho'; keys.append(key)
values[key] = True
riOpts[key] = ri.Custom.OptionToggle(values[key], 'No', 'Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
key = 'bDebug'; keys.append(key)
values[key] = False
riOpts[key] = ri.Custom.OptionToggle(values[key], 'No', 'Yes')
riAddOpts[key] = addOptionToggle(key, names, riOpts)
stickyKeys[key] = '{}({})'.format(key, __file__)
for key in keys:
if key not in names:
names[key] = key[1:]
# Load sticky.
for key in stickyKeys:
if stickyKeys[key] in sc.sticky:
if key in riOpts:
riOpts[key].CurrentValue = values[key] = sc.sticky[stickyKeys[key]]
else:
values[key] = sc.sticky[stickyKeys[key]]
@classmethod
def setValues(cls):
for key in cls.keys:
if key in cls.riOpts:
cls.values[key] = cls.riOpts[key].CurrentValue
@classmethod
def saveSticky(cls):
for key in cls.stickyKeys:
if key in cls.riOpts:
sc.sticky[cls.stickyKeys[key]] = cls.riOpts[key].CurrentValue
else:
sc.sticky[cls.stickyKeys[key]] = cls.values[key]
def addGeoms(geoms, bRedraw=True):
""" For debugging. """
if not hasattr(geoms, '__iter__'):
geoms = [geoms]
for geom in geoms:
if isinstance(geom, tuple):
gOut = sc.doc.Objects.AddSurface(geom[1])
elif isinstance(geom, rg.Curve):
gOut = sc.doc.Objects.AddCurve(geom)
elif isinstance(geom, rg.Surface):
gOut = sc.doc.Objects.AddSurface(geom)
elif isinstance(geom, rg.Point3d):
gOut = sc.doc.Objects.AddPoint(geom)
elif isinstance(geom, rg.Plane):
intrvl = rg.Interval(-sc.doc.ModelAbsoluteTolerance*1000.0, sc.doc.ModelAbsoluteTolerance*1000.0)
psrf = rg.PlaneSurface(geom, intrvl, intrvl)
gOut = sc.doc.Objects.AddSurface(psrf)
else:
raise ValueError("Method to add {} missing from addGeoms.".format(geom))
if bRedraw: sc.doc.Views.Redraw()
return gOut
def getInput():
"""
Get curve and parameter with optional input.
"""
go = ri.Custom.GetObject()
go.SetCommandPrompt("Select 2 curves near their ends to match")
go.GeometryFilter = Rhino.DocObjects.ObjectType.Curve
go.OneByOnePostSelect = True
go.DisablePreSelect()
go.AcceptNumber(True, acceptZero=True)
idxs_Opts = {}
while True:
idxs_Opts['iContinuity'] = Opts.riAddOpts['iContinuity'](go)
idxs_Opts['fAngleTol_Deg'] = Opts.riAddOpts['fAngleTol_Deg'](go)
Opts.riAddOpts['bSkipIfAlreadyAtContinuity'](go)
idxs_Opts['iPreserveOtherEnd'] = Opts.riAddOpts['iPreserveOtherEnd'](go)
Opts.riAddOpts['bLimitCrvDev'](go)
if Opts.values['bLimitCrvDev']: Opts.riAddOpts['fDevTol'](go)
if sOpts_Continuity[Opts.values['iContinuity']] in ('G0', 'G1'):
Opts.riAddOpts['bMaximizeMinRadius'](go)
Opts.riAddOpts['bModOnly1stPicked'](go)
Opts.riAddOpts['bDeformLines'](go)
Opts.riAddOpts['bRebuildRationals'](go)
Opts.riAddOpts['bReplace'](go)
Opts.riAddOpts['bEcho'](go)
Opts.riAddOpts['bDebug'](go)
res = go.GetMultiple(minimumNumber=2, maximumNumber=2)
if res == ri.GetResult.Cancel:
go.Dispose()
return
if res == ri.GetResult.Object:
objrefs = go.Objects()
go.Dispose()
return tuple([objrefs] + [Opts.values[key] for key in Opts.keys])
# An option was selected or a number was entered.
key = 'fAngleTol_Deg'
if Opts.riOpts[key].CurrentValue <= 0.0:
Opts.riOpts[key].CurrentValue = Opts.riOpts[key].InitialValue
if res == ri.GetResult.Number:
number = go.Number()
if number == 0.0:
Opts.values['iContinuity'] = sOpts_Continuity.index('G0')
elif number == 1.0:
Opts.values['iContinuity'] = sOpts_Continuity.index('G1')
elif number == 2.0:
Opts.values['iContinuity'] = sOpts_Continuity.index('G2')
else:
Opts.riOpts['fDevTol'].CurrentValue = number
elif res == ri.GetResult.Option:
if go.Option().Index == idxs_Opts['iContinuity']:
Opts.values['iContinuity'] = (
go.Option().CurrentListOptionIndex)
elif go.Option().Index == idxs_Opts['iPreserveOtherEnd']:
Opts.values['iPreserveOtherEnd'] = (
go.Option().CurrentListOptionIndex)
if Opts.riOpts['bLimitCrvDev'].CurrentValue:
key = 'fDevTol'
if Opts.riOpts[key].CurrentValue <= 0.0:
Opts.riOpts[key].CurrentValue = Opts.riOpts[key].InitialValue
Opts.setValues()
Opts.saveSticky()
go.ClearCommandOptions()
def getMaximumDeviation(rgCrvA, rgCrvB):
rc = rg.Curve.GetDistancesBetweenCurves(
rgCrvA,
rgCrvB,
tolerance=0.1*sc.doc.ModelAbsoluteTolerance)
if rc[0]:
return rc[1]
def formatDistance(fDistance):
if fDistance is None:
return "(None)"
if fDistance == Rhino.RhinoMath.UnsetValue:
return "(Infinite)"
if fDistance < 10.0**(-(sc.doc.DistanceDisplayPrecision-3)):
return "{:.2e}".format(fDistance)
return "{:.{}f}".format(fDistance, sc.doc.ModelDistanceDisplayPrecision)
def _rebuildRationalCurve(crv):
if not crv.IsRational:
return
if crv.Degree <= 3:
degree = 3
degree = 3 if crv.Degree < 3 else crv.Degree
if not fDevTol:
# Create Bezier.
rc = crv.Rebuild(
pointCount=degree+1,
degree=degree,
preserveTangents=True)
if rc:
return rc
else:
if degree >= 5:
iPreserveEndG = 2
elif degree >= 3:
iPreserveEndG = 1
else:
iPreserveEndG = 0
rc = spb_RebuildCrvUniform.findRebuild(
crv,
fDevTol=0.5*fDevTol,
iDegree=degree,
iPreserveEndG=iPreserveEndG,
bFurtherTranslateCps=True,
iMinCpCt=None,
iMaxCpCt=40,
bDebug=False,
)
if rc[0] is not None:
return rc[0]
def createNurbsCurves(rgCurveA, rgCurveB, bT1WorkEnd_A, bT1WorkEnd_B, bModifyA, bModifyB, **kwargs):
"""
Parameters:
rgCurveA
rgCurveB
bT1WorkEnd_A
bT1WorkEnd_B
bModifyA: If both bModifyA and bModifyB are False, will return the curve with less deviation result.
bModifyB: (See bModifyA.)
Returns:
Success (One of the following):
rg.NurbsCurve, rg.NurbsCurve
rg.NurbsCurve, None
None, rg.NurbsCurve
Fail: None
"""
def getOpt(key): return kwargs[key] if key in kwargs else Opts.values[key]
if 'sContinuity' in kwargs:
sContinuity = kwargs['sContinuity']
else:
sContinuity = sOpts_Continuity[Opts.values['iContinuity']]
fAngleTol_Deg = getOpt('fAngleTol_Deg')
bSkipIfAlreadyAtContinuity = getOpt('bSkipIfAlreadyAtContinuity')
iPreserveOtherEnd = getOpt('iPreserveOtherEnd')
fDevTol = getOpt('fDevTol')
bMaximizeMinRadius = getOpt('bMaximizeMinRadius')
bDeformLines = getOpt('bDeformLines')
bRebuildRationals = getOpt('bRebuildRationals')
bEcho = getOpt('bEcho')
bDebug = getOpt('bDebug')
if not bModifyA and not bModifyB:
print("Neither curve is supposed to be modified.")
return
def areCurvesAlreadyAtDesiredContinuity():
"""
"""
nc0_A = rgCurveA.ToNurbsCurve()
if bT1WorkEnd_A:
t_WorkEnd_A = nc0_A.Domain.T1
crvEvalSide_A = rg.CurveEvaluationSide.Below
idxCp_Pos_A = nc0_A.Points.Count - 1
idxCp_Tan_A = nc0_A.Points.Count - 2
else:
t_WorkEnd_A = nc0_A.Domain.T0
crvEvalSide_A = rg.CurveEvaluationSide.Above
idxCp_Pos_A = 0
idxCp_Tan_A = 1
nc0_B = rgCurveB.ToNurbsCurve()
if bT1WorkEnd_B:
t_WorkEnd_B = nc0_B.Domain.T1
crvEvalSide_B = rg.CurveEvaluationSide.Below
idxCp_Pos_B = nc0_B.Points.Count - 1
idxCp_Tan_B = nc0_B.Points.Count - 2
else:
t_WorkEnd_B = nc0_B.Domain.T0
crvEvalSide_B = rg.CurveEvaluationSide.Above
idxCp_Pos_B = 0
idxCp_Tan_B = 1
rc = spb_Crv_continuityBetween2.processCurves(
nc0_A,
nc0_B,
bEvalT1End_A=bT1WorkEnd_A,
bEvalT1End_B=bT1WorkEnd_B,
fDistTol=Rhino.RhinoMath.ZeroTolerance,
fAngleTol_Vector_Deg=fAngleTol_Deg,
bAlignCrvDirs=True,
bDebug=bDebug,
)
if not rc:
print("Error in obtaining data from spb_Crv_continuityBetween2.processCurves.")
return
iContinuity0_G, iContinuity0_C, sContinuityDescr = rc
if bDebug:
print(sContinuityDescr)
sEval='sContinuity'; print(sEval+': ',eval(sEval))
s = "Starting continuity: G{}/C{} ".format(iContinuity0_G, iContinuity0_C)
if sContinuity == 'G0':
if iContinuity0_G:
if bEcho:
s += " Curves' endpoints already meet at G{} continuity.".format(
iContinuity0_G)
print(s)
nc0_A.Dispose()
nc0_B.Dispose()
return True
elif sContinuity == 'G1':
if iContinuity0_G >= 1:
if bEcho:
s += " Curves' endpoints already meet at G{} continuity.".format(
iContinuity0_G)
print(s)
nc0_A.Dispose()
nc0_B.Dispose()
return True
elif sContinuity == 'C1':
if iContinuity0_C >= 1:
if bEcho:
s += " Curves' endpoints already meet at G{} continuity.".format(
iContinuity0_G)
print(s)
nc0_A.Dispose()
nc0_B.Dispose()
return True
elif sContinuity == 'G2':
if iContinuity0_G >= 2:
if bEcho:
s += " Curves' endpoints already meet at G{} continuity.".format(
iContinuity0_G)
print(s)
nc0_A.Dispose()
nc0_B.Dispose()
return True
if bEcho: print(s)
return False
def doCrvsMatchWithinDistDev(cA, cB, fDevTol=fDevTol):
if fDevTol:
fDev = getMaximumDeviation(cA, cB)
if fDev is None:
print("Curve is not acceptable because its deviation cannot be determined.")
return False
elif fDev > fDevTol:
print("Curve is not acceptable because deviation would be {}.".format(
formatDistance(fDev)))
return False
return True
def createForBothCurves(rgCurveA, rgCurveB, bT1WorkEnd_A, bT1WorkEnd_B):
"""
Returns on success: (rg.NurbsCurve, rg.NurbsCurve)
Returns on fail: None
"""
c0_A = rgCurveA
c0_B = rgCurveB
c0s = [rgCurveA, rgCurveB]
bT1WorkEnds = bT1WorkEnd_A, bT1WorkEnd_B
ncs_PreMatch = [c0_A.ToNurbsCurve(), c0_B.ToNurbsCurve()]
if bRebuildRationals:
for i in 0,1:
rc = _rebuildRationalCurve(ncs_PreMatch[i])
if rc:
ncs_PreMatch[i].Dispose()
ncs_PreMatch[i] = rc
nc_A_PreMatch = ncs_PreMatch[0]
if bT1WorkEnd_A:
t_WorkEnd_A = nc_A_PreMatch.Domain.T1
crvEvalSide_A = rg.CurveEvaluationSide.Below
idxCp_Pos_A = nc_A_PreMatch.Points.Count - 1
idxCp_Tan_A = nc_A_PreMatch.Points.Count - 2
idxCp_Crv_A = nc_A_PreMatch.Points.Count - 3
else:
t_WorkEnd_A = nc_A_PreMatch.Domain.T0
crvEvalSide_A = rg.CurveEvaluationSide.Above
idxCp_Pos_A = 0
idxCp_Tan_A = 1
idxCp_Crv_A = 2
nc_B_PreMatch = ncs_PreMatch[1]
if bT1WorkEnd_B:
t_WorkEnd_B = nc_B_PreMatch.Domain.T1
crvEvalSide_B = rg.CurveEvaluationSide.Below
idxCp_Pos_B = nc_B_PreMatch.Points.Count - 1
idxCp_Tan_B = nc_B_PreMatch.Points.Count - 2
idxCp_Crv_B = nc_B_PreMatch.Points.Count - 3
else:
t_WorkEnd_B = nc_B_PreMatch.Domain.T0
crvEvalSide_B = rg.CurveEvaluationSide.Above
idxCp_Pos_B = 0
idxCp_Tan_B = 1
idxCp_Crv_B = 2
#vectsDerivatives_A = nc0_A.DerivativeAt(
# t_WorkEnd_A,
# derivativeCount=2,
# side=crvEvalSide_A)
#print(vectsDerivatives_A[2], nc0_A.CurvatureAt(t_WorkEnd_A)
#vectsDerivatives_B = nc0_B.DerivativeAt(
# t_WorkEnd_B,
# derivativeCount=2,
# side=crvEvalSide_B)
#print(vectsDerivatives_B[2], nc0_B.CurvatureAt(t_WorkEnd_B)
# (PC to maintain condition type at opposite end of curve) + (PC to modify working side of curve), where PC is "required min. point count".
if sContinuity == 'G0':
iCt_Cp_MinNeeded = iPreserveOtherEnd + 1
elif sContinuity in ('G1', 'C1'):
iCt_Cp_MinNeeded = iPreserveOtherEnd + 2
elif sContinuity == 'G2':
iCt_Cp_MinNeeded = iPreserveOtherEnd + 3
nc_WIP_A = None
nc_WIP_B = None
if bDeformLines:
for i in 0,1:
if ncs_PreMatch[i].Points.Count < iCt_Cp_MinNeeded:
if ncs_PreMatch[i].Points.Count == 2:
ts = ncs_PreMatch[i].DivideByCount(
segmentCount=iCt_Cp_MinNeeded-1,
includeEnds=True)
rc = rg.NurbsCurve.Create(
periodic=False,
degree=3,
points=[ncs_PreMatch[i].PointAt(t) for t in ts])
ncs_PreMatch[i].Dispose()
ncs_PreMatch[i] = rc
nc_A_PreMatch = ncs_PreMatch[0]
nc_B_PreMatch = ncs_PreMatch[1]
if (
nc_A_PreMatch.Points.Count < iCt_Cp_MinNeeded
and
nc_B_PreMatch.Points.Count < iCt_Cp_MinNeeded
):
print("Neither curve has enough control points for this continuity modification.")
for i in 0,1:
if ncs_PreMatch[i] is not None: ncs_PreMatch[i].Dispose()
return
elif nc_A_PreMatch.Points.Count < iCt_Cp_MinNeeded:
print("Curve A doesn't have enough control points for this continuity modification.")
for i in 0,1:
if ncs_PreMatch[i] is not None: ncs_PreMatch[i].Dispose()
return
elif nc_B_PreMatch.Points.Count < iCt_Cp_MinNeeded:
print("Curve B doesn't have enough control points for this continuity modification.")
for i in 0,1:
if ncs_PreMatch[i] is not None: ncs_PreMatch[i].Dispose()
return
nc_WIP_A = nc_A_PreMatch.Duplicate()
nc_WIP_B = nc_B_PreMatch.Duplicate()
# First, modify position.
pt_Average = (0.5 * nc_WIP_A.Points[idxCp_Pos_A].Location +
0.5 * nc_WIP_B.Points[idxCp_Pos_B].Location)
if nc_WIP_A.Points[idxCp_Pos_A] != pt_Average:
nc_WIP_A.Points[idxCp_Pos_A] = pt_Average
nc_WIP_B.Points[idxCp_Pos_B] = pt_Average
nc_WIPs = [nc_WIP_A, nc_WIP_B]
if not (
doCrvsMatchWithinDistDev(nc_WIPs[0], ncs_PreMatch[0]) and
doCrvsMatchWithinDistDev(nc_WIPs[1], ncs_PreMatch[1])
):
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
nc_WIPs[0].Dispose()
nc_WIPs[1].Dispose()
return
# Determine tangent vector(s).
vectTan_A1 = nc_A_PreMatch.TangentAt(t_WorkEnd_A)
vectTan_B1 = nc_B_PreMatch.TangentAt(t_WorkEnd_B)
if bT1WorkEnd_A == bT1WorkEnd_B:
vectTan_Target_B = (0.5 * -vectTan_A1) + (0.5 * vectTan_B1)
vectTan_Target_A = -vectTan_Target_B
else:
vectTan_Target_A = (0.5 * vectTan_A1) + (0.5 * vectTan_B1)
vectTan_Target_B = vectTan_Target_A
# Modify tangency.
if sContinuity in ('G1', 'C1', 'G2'):
# for G1 or (C1 and the adjacent curve is linear or circular-arc-shaped).
bEndConditionSet_A = nc_WIP_A.SetEndCondition(
bSetEnd=bT1WorkEnd_A,
continuity=rg.NurbsCurve.NurbsCurveEndConditionType.Tangency,
point=pt_Average,
tangent=vectTan_Target_A)
bEndConditionSet_B = nc_WIP_B.SetEndCondition(
bSetEnd=bT1WorkEnd_B,
continuity=rg.NurbsCurve.NurbsCurveEndConditionType.Tangency,
point=pt_Average,
tangent=vectTan_Target_B)
# Deviation check.
if not (
doCrvsMatchWithinDistDev(nc_WIPs[0], ncs_PreMatch[0]) and
doCrvsMatchWithinDistDev(nc_WIPs[1], ncs_PreMatch[1])
):
#addGeoms(nc_WIPs); 1/0
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
nc_WIPs[0].Dispose()
nc_WIPs[1].Dispose()
return
if sContinuity == 'C1' and not nc_A_PreMatch.CurvatureAt(t_WorkEnd_A).IsTiny() and not nc_B_PreMatch.CurvatureAt(t_WorkEnd_B).IsTiny():
# TODO: Make average.
# In the following, some of the paretheses are included to obtain Point3d instead of Vector3d.
pt_Tan1_A = 0.5 * nc_A_PreMatch.Points[idxCp_Tan_A].Location + 0.5 * (
nc_B_PreMatch.Points[idxCp_Pos_B].Location -
float(nc_B_PreMatch.Degree / nc_WIP_A.Degree) *
(nc_B_PreMatch.Points[idxCp_Tan_B].Location -
nc_B_PreMatch.Points[idxCp_Pos_B].Location))
#sc.doc.Objects.AddPoint(pt_Tan1_A)
pt_Tan1_B = 0.5 * nc_B_PreMatch.Points[idxCp_Tan_B].Location + 0.5 * (
nc_A_PreMatch.Points[idxCp_Pos_A].Location -
float(nc_A_PreMatch.Degree / nc_WIP_B.Degree) *
(nc_A_PreMatch.Points[idxCp_Tan_A].Location -
nc_A_PreMatch.Points[idxCp_Pos_A].Location))
#sc.doc.Objects.AddPoint(pt_Tan1_B)
if nc_WIP_A.Points[idxCp_Tan_A] != pt_Tan1_A:
nc_WIP_A.Points[idxCp_Tan_A] = pt_Tan1_A
if nc_WIP_B.Points[idxCp_Tan_B] != pt_Tan1_B:
nc_WIP_B.Points[idxCp_Tan_B] = pt_Tan1_B
# Deviation check.
if not (
doCrvsMatchWithinDistDev(nc_WIPs[0], ncs_PreMatch[0]) and
doCrvsMatchWithinDistDev(nc_WIPs[1], ncs_PreMatch[1])
):
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
nc_WIPs[0].Dispose()
nc_WIPs[1].Dispose()
return
if bMaximizeMinRadius and sContinuity not in ('C1', 'C2', 'G2'):
s = "Adjusting tangent control point spread ..."
if bEcho: print(s)
nc_WIPs = [nc_WIP_A.ToNurbsCurve(), nc_WIP_B.ToNurbsCurve()]
for i in 0,1:
rc = spb_NurbsCrv_maximizeMinimumRadius.adjustTanCpSpread_OneEndOnly(
nc_WIPs[i],
bT1WorkEnds[i],
fDevTol,
ncs_PreMatch[i],
bDebug=bDebug,
)
if rc:
nc_WIPs[i].Dispose()
nc_WIPs[i] = rc[0]
nc_WIP_A, nc_WIP_B = nc_WIPs
# Deviation has already been checked in adjustTanCpSpread.
if sContinuity == 'G2':
# Determine curvature vector(s).
vectCrv_A1 = nc_A_PreMatch.CurvatureAt(t_WorkEnd_A)
vectCrv_B1 = nc_B_PreMatch.CurvatureAt(t_WorkEnd_B)
if bT1WorkEnd_A == bT1WorkEnd_B:
vectCrv_Target_B = (0.5 * -vectCrv_A1) + (0.5 * vectCrv_B1)
vectCrv_Target_A = -vectCrv_Target_B
else:
vectCrv_Target_A = vectCrv_Target_B = (0.5 * vectCrv_A1) + (0.5 * vectCrv_B1)
bEndConditionSet_A = nc_WIP_A.SetEndCondition(
bSetEnd=bT1WorkEnd_A,
continuity=rg.NurbsCurve.NurbsCurveEndConditionType.Curvature,
point=pt_Average,
tangent=vectTan_Target_A,
curvature=vectCrv_Target_A)
bEndConditionSet_B = nc_WIP_B.SetEndCondition(
bSetEnd=bT1WorkEnd_B,
continuity=rg.NurbsCurve.NurbsCurveEndConditionType.Curvature,
point=pt_Average,
tangent=vectTan_Target_B,
curvature=vectCrv_Target_B)
# Deviation check.
if not (
doCrvsMatchWithinDistDev(nc_WIPs[0], ncs_PreMatch[0]) and
doCrvsMatchWithinDistDev(nc_WIPs[1], ncs_PreMatch[1])
):
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
nc_WIPs[0].Dispose()
nc_WIPs[1].Dispose()
return
# Curve is within tolerance.
for i in 0,1:
if nc_WIPs[i].EpsilonEquals(ncs_PreMatch[i], 1e-12):
print("Curve was not modified.")
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
nc_WIPs[0].Dispose()
nc_WIPs[1].Dispose()
return
ncs_PreMatch[0].Dispose()
ncs_PreMatch[1].Dispose()
return tuple(nc_WIPs)
def createForOneCurve(rgCurve_One, rgCurve_Ref, bT1WorkEnd_One, bT1WorkEnd_Ref):
"""
Parameters:
rgCurve_One: For which to create a new curve.
rgCurve_Ref: Reference.
Returns:
Single NurbsCurve on success.
None on fail.
"""
kwargs_reviewDuringDebug = kwargs
ncOne_PreMatch = rgCurve_One.ToNurbsCurve()
# (PC to maintain condition type at opposite end of curve) + (PC to modify working side of curve), where PC is "required min. point count".
if sContinuity == 'G0':
iCt_Cp_MinNeeded = iPreserveOtherEnd + 1
elif sContinuity in ('G1', 'C1'):
iCt_Cp_MinNeeded = iPreserveOtherEnd + 2
elif sContinuity == 'G2':
iCt_Cp_MinNeeded = iPreserveOtherEnd + 3
if bDeformLines:
if ncOne_PreMatch.Points.Count < iCt_Cp_MinNeeded:
if ncOne_PreMatch.Points.Count == 2:
ts = ncOne_PreMatch.DivideByCount(
segmentCount=iCt_Cp_MinNeeded-1,
includeEnds=True)
rc = rg.NurbsCurve.Create(
periodic=False,
degree=3,
points=[ncOne_PreMatch.PointAt(t) for t in ts])
ncOne_PreMatch.Dispose()
ncOne_PreMatch = rc
if bRebuildRationals and ncOne_PreMatch.IsRational:
rc = _rebuildRationalCurve(ncOne_PreMatch)
if rc:
ncOne_PreMatch.Dispose()
ncOne_PreMatch = rc
else:
print("Rational curve was not rebuit.")
return
if bT1WorkEnd_One:
t_WorkEnd_One = ncOne_PreMatch.Domain.T1
crvEvalSide_One = rg.CurveEvaluationSide.Below
idxCp_Pos_One = ncOne_PreMatch.Points.Count - 1
idxCp_Tan_One = ncOne_PreMatch.Points.Count - 2
idxCp_Crv_One = ncOne_PreMatch.Points.Count - 3
else:
t_WorkEnd_One = ncOne_PreMatch.Domain.T0
crvEvalSide_One = rg.CurveEvaluationSide.Above
idxCp_Pos_One = 0
idxCp_Tan_One = 1
idxCp_Crv_One = 2
nc_Ref = rgCurve_Ref.ToNurbsCurve()
if bT1WorkEnd_Ref:
t_WorkEnd_Ref = nc_Ref.Domain.T1
crvEvalSide_Ref = rg.CurveEvaluationSide.Below
idxCp_Pos_Ref = nc_Ref.Points.Count - 1
idxCp_Tan_Ref = nc_Ref.Points.Count - 2
idxCp_Crv_Ref = nc_Ref.Points.Count - 3
else:
t_WorkEnd_Ref = nc_Ref.Domain.T0
crvEvalSide_Ref = rg.CurveEvaluationSide.Above
idxCp_Pos_Ref = 0
idxCp_Tan_Ref = 1
idxCp_Crv_Ref = 2
#vectsDerivatives_A = nc0_A.DerivativeAt(
# t_WorkEnd_A,
# derivativeCount=2,
# side=crvEvalSide_A)
#print(vectsDerivatives_A[2], nc0_A.CurvatureAt(t_WorkEnd_A)
vectsDerivatives_B = nc_Ref.DerivativeAt(
t_WorkEnd_Ref,
derivativeCount=2,
side=crvEvalSide_Ref)
#print(vectsDerivatives_B[2], nc0_B.CurvatureAt(t_WorkEnd_B)
if ncOne_PreMatch.Points.Count < iCt_Cp_MinNeeded:
if nc_Ref.Points.Count < iCt_Cp_MinNeeded:
print("Neither curve has enough control points" \
" for this continuity modification.")
ncOne_PreMatch.Dispose()
nc_Ref.Dispose()
return
if bEcho:
s = "Curve A has {} control points, but needs {}.".format(
ncOne_PreMatch.Points.Count,
iCt_Cp_MinNeeded)
if nc_Ref.Points.Count < iCt_Cp_MinNeeded:
s += " Curve B also doesn't have enough."
if bRebuildRationals and nc_Ref.IsRational:
s += ", but unrationalization was not performed on rational B yet."
else:
s += "."
else:
s += ", but Curve B does."
print(s)
ncOne_PreMatch.Dispose()
nc_Ref.Dispose()
return
def createForCurvature():
rgNurbsCrv_WIP_A = ncOne_PreMatch.Duplicate()
vectTanForA = nc_Ref.TangentAt(t_WorkEnd_Ref)
if bT1WorkEnd_One == bT1WorkEnd_Ref:
bReversedTanForA = vectTanForA.Reverse()
if bDebug: sEval='bReversedTanForA'; print(sEval+': ',eval(sEval))
bEndConditionSet_A = rgNurbsCrv_WIP_A.SetEndCondition(
bSetEnd=bT1WorkEnd_One,
continuity=rg.NurbsCurve.NurbsCurveEndConditionType.Curvature,
point=nc_Ref.PointAtEnd if bT1WorkEnd_Ref else nc_Ref.PointAtStart,
tangent=vectTanForA,
curvature=nc_Ref.CurvatureAt(t_WorkEnd_Ref))
return [rgNurbsCrv_WIP_A]
def createForC1():
if nc_Ref.CurvatureAt(t_WorkEnd_Ref).IsTiny(): # or not vectsDerivatives_B[2].IsTiny(): # Does it matter which one is used?
return
nc1_A = ncOne_PreMatch.Duplicate()
# First, modify the end control point's position.
if nc1_A.Points[idxCp_Pos_One] != nc_Ref.Points[idxCp_Pos_Ref]:
nc1_A.Points[idxCp_Pos_One] = nc_Ref.Points[idxCp_Pos_Ref]
# Now check control point spans to avoid distorting curve.
dist_Cp0Cp2_A = nc1_A.Points[idxCp_Pos_One].Location.DistanceTo(
nc1_A.Points[idxCp_Crv_One].Location)
dist_Cp0Cp1_R = nc_Ref.Points[idxCp_Pos_Ref].Location.DistanceTo(
nc_Ref.Points[idxCp_Tan_Ref].Location)
degA = nc1_A.Degree
degR = nc_Ref.Degree
dist_Cp0Cp2_A_Scaled = float(degR)*dist_Cp0Cp2_A
dist_Cp0Cp1_R_Scaled = float(degA)*dist_Cp0Cp1_R
if dist_Cp0Cp2_A_Scaled < dist_Cp0Cp1_R_Scaled:
if bDebug:
print("Avoided moving Tan Cp beyond Crv Cp.")
return
# Now, modify the tangent (second from end) control point's position.
# In the following, some of the paretheses are included
# to obtain Point3d instead of Vector3d.
pt_Target = (
nc_Ref.Points[idxCp_Pos_Ref].Location -
(
(float(nc_Ref.Degree) / float(nc1_A.Degree)) *
(nc_Ref.Points[idxCp_Tan_Ref].Location -
nc_Ref.Points[idxCp_Pos_Ref].Location)
)
)
if nc1_A.Points[idxCp_Tan_One] != pt_Target:
nc1_A.Points[idxCp_Tan_One] = pt_Target
#sc.doc.Objects.AddCurve(nc1_A); sc.doc.Views.Redraw()
return nc1_A
def createForTangency():
ncs = []
# Version: C1 continuity. Also used as an optional result for G1.
rc = createForC1()
if rc: ncs.append(rc)
#
if sContinuity == 'C1' and not nc_Ref.CurvatureAt(t_WorkEnd_Ref).IsTiny():
# If IsTiny, control point span can be anything for C1,
# so test other tangent solutions.
return ncs
#
# Version: Move tangency control point to closest point inline with
# tangency line of Curve B.
ncs.append(ncOne_PreMatch.Duplicate())
# First, modify the end control point's position.
if ncs[-1].Points[idxCp_Pos_One] != nc_Ref.Points[idxCp_Pos_Ref]:
ncs[-1].Points[idxCp_Pos_One] = nc_Ref.Points[idxCp_Pos_Ref]
# Now, modify the tangent (second from end) control point's position
# to be inline with the 2 end ones of Curve B.
# Cannot modify the ControlPoint Location directly. Use SetPoint instead.
line = rg.Line(
nc_Ref.Points[idxCp_Pos_Ref].Location,
nc_Ref.Points[idxCp_Tan_Ref].Location)
pt_Target = line.ClosestPoint(
ncs[-1].Points[idxCp_Tan_One].Location,