def _tile_search1(Jobs, TSoFar, firstAddPoint, cfg=config.Config):
"""This recursive function does the following with an existing tiling TSoFar:
* For each 4-tuple (Xdim,Ydim,job,rjob) in Jobs, the non-rotated 'job' is selected
* For the non-rotated job, the list of valid add-points is found
* For each valid add-point, the job is placed at this point in a new,
cloned tiling.
* The function then calls its recursively with the remaining list of
jobs.
* The rotated job is then selected and the list of valid add-points is
found. Again, for each valid add-point the job is placed there in
a new, cloned tiling.
* Once again, the function calls itself recursively with the remaining
list of jobs.
* The best tiling encountered from all recursive calls is returned.
If TSoFar is None it means this combination of jobs is not tileable.
The side-effect of this function is to set _TBestTiling and _TBestScore
to the best tiling encountered so far. _TBestTiling could be None if
no valid tilings have been found so far.
"""
global _StartTime, _CkpointTime, _Placements, _TBestTiling, _TBestScore, _Permutations, _PrintStats
if not TSoFar:
return (None, float(sys.maxint))
if not Jobs:
# Update the best tiling and score. If the new tiling matches
# the best score so far, compare on number of corners, trying to
# minimize them.
score = TSoFar.area()
if score < _TBestScore:
_TBestTiling,_TBestScore = TSoFar,score
elif score == _TBestScore:
if TSoFar.corners() < _TBestTiling.corners():
_TBestTiling,_TBestScore = TSoFar,score
_Placements += 1
if firstAddPoint:
_Permutations += 1
return
xspacing = cfg['xspacing']
yspacing = cfg['yspacing']
minInletSize = tiling.minDimension(Jobs)
TSoFar.removeInlets(minInletSize)
for job_ix in range(len(Jobs)):
# Pop off the next job and construct remaining_jobs, a sub-list
# of Jobs with the job we've just popped off excluded.
Xdim,Ydim,job,rjob = Jobs[job_ix]
remaining_jobs = Jobs[:job_ix]+Jobs[job_ix+1:]
if 0:
print "Level %d (%s)" % (level, job.name)
TSoFar.joblist()
for J in remaining_jobs:
print J[2].name, ", ",
print
print '-'*75
# Construct add-points for the non-rotated and rotated job.
# As an optimization, do not construct add-points for the rotated
# job if the job is a square (duh).
addpoints1 = TSoFar.validAddPoints(Xdim+xspacing,Ydim+yspacing) # unrotated job
if Xdim != Ydim:
addpoints2 = TSoFar.validAddPoints(Ydim+xspacing,Xdim+yspacing) # rotated job
else:
addpoints2 = []
# Recursively construct tilings for the non-rotated job and
# update the best-tiling-so-far as we do so.
if addpoints1:
for ix in addpoints1:
# Clone the tiling we're starting with and add the job at this
# add-point.
T = TSoFar.clone()
T.addJob(ix, Xdim+xspacing, Ydim+yspacing, job)
# Recursive call with the remaining jobs and this new tiling. The
# point behind the last parameter is simply so that _Permutations is
# only updated once for each permutation, not once per add-point.
# A permutation is some ordering of jobs (N! choices) and some
# ordering of non-rotated and rotated within that ordering (2**N
# possibilities per ordering).
_tile_search1(remaining_jobs, T, firstAddPoint and ix==addpoints1[0])
elif firstAddPoint:
# Premature prune due to not being able to put this job anywhere. We
# have pruned off 2^M permutations where M is the length of the remaining
# jobs.
_Permutations += 2L**len(remaining_jobs)
if addpoints2:
for ix in addpoints2:
# Clone the tiling we're starting with and add the job at this
# add-point. Remember that the job is rotated so swap X and Y
# dimensions.
T = TSoFar.clone()
T.addJob(ix, Ydim+xspacing, Xdim+yspacing, rjob)
# Recursive call with the remaining jobs and this new tiling.
_tile_search1(remaining_jobs, T, firstAddPoint and ix==addpoints2[0])
elif firstAddPoint:
# Premature prune due to not being able to put this job anywhere. We
# have pruned off 2^M permutations where M is the length of the remaining
# jobs.
_Permutations += 2L**len(remaining_jobs)
# If we've been at this for 3 seconds, print some status information
if _PrintStats and time.time() > _CkpointTime:
printTilingStats()
# Check for timeout - changed to file config
if (config.Config['searchtimeout'] > 0) and ((time.time() - _StartTime) > config.Config['searchtimeout']):
raise KeyboardInterrupt
gerbmerge.updateGUI("Performing automatic layout...")
def _tile_search2(Jobs, X, Y, cfg=config.Config):
global _CkpointTime, _Placements, _TBestTiling, _TBestScore
r = random.Random()
N = len(Jobs)
# M is the number of jobs that will be placed randomly.
# N-M is the number of jobs that will be searched exhaustively.
M = N - config.RandomSearchExhaustiveJobs
M = max(M, 0)
xspacing = cfg['xspacing']
yspacing = cfg['yspacing']
# Must escape with Ctrl-C
while 1:
T = tiling.Tiling(X, Y)
joborder = r.sample(range(N), N)
minInletSize = tiling.minDimension(Jobs)
for ix in joborder[:M]:
Xdim, Ydim, job, rjob = Jobs[ix]
T.removeInlets(minInletSize)
if r.choice([0, 1]):
addpoints = T.validAddPoints(Xdim + xspacing, Ydim + yspacing)
if not addpoints:
break
pt = r.choice(addpoints)
T.addJob(pt, Xdim + xspacing, Ydim + yspacing, job)
else:
addpoints = T.validAddPoints(Ydim + xspacing, Xdim + yspacing)
if not addpoints:
break
pt = r.choice(addpoints)
T.addJob(pt, Ydim + xspacing, Xdim + yspacing, rjob)
else:
# Do exhaustive search on remaining jobs
if N - M:
remainingJobs = []
for ix in joborder[M:]:
remainingJobs.append(Jobs[ix])
tilesearch1.initialize(0)
tilesearch1._tile_search1(remainingJobs, T, 1)
T = tilesearch1.bestTiling()
if T:
score = T.area()
if score < _TBestScore:
_TBestTiling, _TBestScore = T, score
elif score == _TBestScore:
if T.corners() < _TBestTiling.corners():
_TBestTiling, _TBestScore = T, score
_Placements += 1
# If we've been at this for 3 seconds, print some status information
if time.time() > _CkpointTime:
printTilingStats()
# Check for timeout - changed to file config
if (config.Config['searchtimeout'] > 0) and (
(time.time() - _StartTime) > config.Config['searchtimeout']):
raise KeyboardInterrupt
gerbmerge.updateGUI("Performing automatic layout...")
def _tile_search2(Jobs, X, Y, cfg=config.Config):
global _CkpointTime, _Placements, _TBestTiling, _TBestScore
r = random.Random()
N = len(Jobs)
# M is the number of jobs that will be placed randomly.
# N-M is the number of jobs that will be searched exhaustively.
M = N - config.RandomSearchExhaustiveJobs
M = max(M,0)
xspacing = cfg['xspacing']
yspacing = cfg['yspacing']
# Must escape with Ctrl-C
while 1:
T = tiling.Tiling(X,Y)
joborder = r.sample(range(N), N)
minInletSize = tiling.minDimension(Jobs)
for ix in joborder[:M]:
Xdim,Ydim,job,rjob = Jobs[ix]
T.removeInlets(minInletSize)
if r.choice([0,1]):
addpoints = T.validAddPoints(Xdim+xspacing,Ydim+yspacing)
if not addpoints:
break
pt = r.choice(addpoints)
T.addJob(pt, Xdim+xspacing, Ydim+yspacing, job)
else:
addpoints = T.validAddPoints(Ydim+xspacing,Xdim+yspacing)
if not addpoints:
break
pt = r.choice(addpoints)
T.addJob(pt, Ydim+xspacing, Xdim+yspacing, rjob)
else:
# Do exhaustive search on remaining jobs
if N-M:
remainingJobs = []
for ix in joborder[M:]:
remainingJobs.append(Jobs[ix])
tilesearch1.initialize(0)
tilesearch1._tile_search1(remainingJobs, T, 1)
T = tilesearch1.bestTiling()
if T:
score = T.area()
if score < _TBestScore:
_TBestTiling,_TBestScore = T,score
elif score == _TBestScore:
if T.corners() < _TBestTiling.corners():
_TBestTiling,_TBestScore = T,score
_Placements += 1
# If we've been at this for 3 seconds, print some status information
if time.time() > _CkpointTime:
printTilingStats()
# Check for timeout - changed to file config
if (config.Config['searchtimeout'] > 0) and ((time.time() - _StartTime) > config.Config['searchtimeout']):
raise KeyboardInterrupt
gerbmerge.updateGUI("Performing automatic layout...")
def _tile_search1(Jobs, TSoFar, firstAddPoint, cfg=config.Config):
"""This recursive function does the following with an existing tiling TSoFar:
* For each 4-tuple (Xdim,Ydim,job,rjob) in Jobs, the non-rotated 'job' is selected
* For the non-rotated job, the list of valid add-points is found
* For each valid add-point, the job is placed at this point in a new,
cloned tiling.
* The function then calls its recursively with the remaining list of
jobs.
* The rotated job is then selected and the list of valid add-points is
found. Again, for each valid add-point the job is placed there in
a new, cloned tiling.
* Once again, the function calls itself recursively with the remaining
list of jobs.
* The best tiling encountered from all recursive calls is returned.
If TSoFar is None it means this combination of jobs is not tileable.
The side-effect of this function is to set _TBestTiling and _TBestScore
to the best tiling encountered so far. _TBestTiling could be None if
no valid tilings have been found so far.
"""
global _StartTime, _CkpointTime, _Placements, _TBestTiling, _TBestScore, _Permutations, _PrintStats
if not TSoFar:
return (None, float(sys.maxint))
if not Jobs:
# Update the best tiling and score. If the new tiling matches
# the best score so far, compare on number of corners, trying to
# minimize them.
score = TSoFar.area()
if score < _TBestScore:
_TBestTiling,_TBestScore = TSoFar,score
elif score == _TBestScore:
if TSoFar.corners() < _TBestTiling.corners():
_TBestTiling,_TBestScore = TSoFar,score
_Placements += 1
if firstAddPoint:
_Permutations += 1
return
xspacing = cfg['xspacing']
yspacing = cfg['yspacing']
minInletSize = tiling.minDimension(Jobs)
TSoFar.removeInlets(minInletSize)
for job_ix in range(len(Jobs)):
# Pop off the next job and construct remaining_jobs, a sub-list
# of Jobs with the job we've just popped off excluded.
Xdim,Ydim,job,rjob = Jobs[job_ix]
remaining_jobs = Jobs[:job_ix]+Jobs[job_ix+1:]
if 0:
print "Level %d (%s)" % (level, job.name)
TSoFar.joblist()
for J in remaining_jobs:
print J[2].name, ", ",
print
print '-'*75
# Construct add-points for the non-rotated and rotated job.
# As an optimization, do not construct add-points for the rotated
# job if the job is a square (duh).
addpoints1 = TSoFar.validAddPoints(Xdim+xspacing,Ydim+yspacing) # unrotated job
if Xdim != Ydim:
addpoints2 = TSoFar.validAddPoints(Ydim+xspacing,Xdim+yspacing) # rotated job
else:
addpoints2 = []
# Recursively construct tilings for the non-rotated job and
# update the best-tiling-so-far as we do so.
if addpoints1:
for ix in addpoints1:
# Clone the tiling we're starting with and add the job at this
# add-point.
T = TSoFar.clone()
T.addJob(ix, Xdim+xspacing, Ydim+yspacing, job)
# Recursive call with the remaining jobs and this new tiling. The
# point behind the last parameter is simply so that _Permutations is
# only updated once for each permutation, not once per add-point.
# A permutation is some ordering of jobs (N! choices) and some
# ordering of non-rotated and rotated within that ordering (2**N
# possibilities per ordering).
_tile_search1(remaining_jobs, T, firstAddPoint and ix==addpoints1[0])
elif firstAddPoint:
# Premature prune due to not being able to put this job anywhere. We
# have pruned off 2^M permutations where M is the length of the remaining
# jobs.
_Permutations += 2L**len(remaining_jobs)
if addpoints2:
for ix in addpoints2:
# Clone the tiling we're starting with and add the job at this
# add-point. Remember that the job is rotated so swap X and Y
# dimensions.
T = TSoFar.clone()
T.addJob(ix, Ydim+xspacing, Xdim+yspacing, rjob)
# Recursive call with the remaining jobs and this new tiling.
_tile_search1(remaining_jobs, T, firstAddPoint and ix==addpoints2[0])
elif firstAddPoint:
# Premature prune due to not being able to put this job anywhere. We
# have pruned off 2^M permutations where M is the length of the remaining
# jobs.
_Permutations += 2L**len(remaining_jobs)
# If we've been at this for 3 seconds, print some status information
if _PrintStats and time.time() > _CkpointTime:
printTilingStats()
# Check for timeout
if (config.SearchTimeout > 0) and (time.time() - _StartTime > config.SearchTimeout):
raise KeyboardInterrupt
gerbmerge.updateGUI("Performing automatic layout...")
