Files
simpeg/SimPEG/Mesh/PointerTree.py
T
2015-11-07 16:47:19 -08:00

1145 lines
49 KiB
Python

from SimPEG import np, sp, Utils, Solver
import matplotlib.pyplot as plt
import matplotlib
import TreeUtils
import time
MAX_BITS = 20
def SortGrid(grid, offset=0):
"""
Sorts a grid by the x0 location.
"""
eps = 1e-7
def mycmp(c1,c2):
c1 = grid[c1-offset]
c2 = grid[c2-offset]
if c1.size == 2:
if np.abs(c1[1] - c2[1]) < eps:
return c1[0] - c2[0]
return c1[1] - c2[1]
elif c1.size == 3:
if np.abs(c1[2] - c2[2]) < eps:
if np.abs(c1[1] - c2[1]) < eps:
return c1[0] - c2[0]
return c1[1] - c2[1]
return c1[2] - c2[2]
class K(object):
def __init__(self, obj, *args):
self.obj = obj
def __lt__(self, other):
return mycmp(self.obj, other.obj) < 0
def __gt__(self, other):
return mycmp(self.obj, other.obj) > 0
def __eq__(self, other):
return mycmp(self.obj, other.obj) == 0
def __le__(self, other):
return mycmp(self.obj, other.obj) <= 0
def __ge__(self, other):
return mycmp(self.obj, other.obj) >= 0
def __ne__(self, other):
return mycmp(self.obj, other.obj) != 0
return sorted(range(offset,grid.shape[0]+offset), key=K)
class NotBalancedException(Exception):
pass
class Tree(object):
def __init__(self, h_in, levels=3):
assert type(h_in) is list, 'h_in must be a list'
assert len(h_in) > 1, "len(h_in) must be greater than 1"
h = range(len(h_in))
for i, h_i in enumerate(h_in):
if type(h_i) in [int, long, float]:
# This gives you something over the unit cube.
h_i = np.ones(int(h_i))/int(h_i)
elif type(h_i) is list:
h_i = Utils.meshTensor(h_i)
assert isinstance(h_i, np.ndarray), ("h[%i] is not a numpy array." % i)
assert len(h_i.shape) == 1, ("h[%i] must be a 1D numpy array." % i)
assert len(h_i) == 2**levels, "must make h and levels match"
h[i] = h_i[:] # make a copy.
self.h = h
self._levels = levels
self._levelBits = int(np.ceil(np.sqrt(levels)))+1
self.__dirty__ = True #: The numbering is dirty!
self._treeInds = set()
self._treeInds.add(0)
@property
def __dirty__(self):
return self.__dirtyFaces__ or self.__dirtyEdges__ or self.__dirtyNodes__ or self.__dirtyHanging__
@__dirty__.setter
def __dirty__(self, val):
assert val is True
self.__dirtyFaces__ = True
self.__dirtyEdges__ = True
self.__dirtyNodes__ = True
self.__dirtyHanging__ = True
@property
def levels(self): return self._levels
@property
def dim(self): return len(self.h)
@property
def nC(self): return len(self._treeInds)
@property
def nN(self):
self._numberNodes()
return len(self._nodes)
@property
def nF(self):
return self.nFx + self.nFy + (0 if self.dim == 2 else self.nFz)
@property
def nFx(self):
self._numberFaces()
return len(self._facesX)
@property
def nFy(self):
self._numberFaces()
return len(self._facesY)
@property
def nFz(self):
if self.dim == 2: return None
self._numberFaces()
return len(self._facesZ)
@property
def nE(self):
return self.nEx + self.nEy + (0 if self.dim == 2 else self.nEz)
@property
def nEx(self):
if self.dim == 2:return self.nFy
self._numberEdges()
return len(self._edgesX)
@property
def nEy(self):
if self.dim == 2:return self.nFx
self._numberEdges()
return len(self._edgesY)
@property
def nEz(self):
if self.dim == 2: return None
self._numberEdges()
return len(self._edgesZ)
@property
def _sortedInds(self):
if getattr(self, '__sortedInds', None) is None:
self.__sortedInds = sorted(self._treeInds)
return self.__sortedInds
@property
def permuteCC(self):
#TODO: cache these?
P = SortGrid(self.gridCC)
return sp.identity(self.nC).tocsr()[P,:]
@property
def permuteF(self):
#TODO: cache these?
P = SortGrid(self.gridFx)
P += SortGrid(self.gridFy, offset=self.nFx)
if self.dim == 3:
P += SortGrid(self.gridFz, offset=self.nFx+self.nFy)
return sp.identity(self.nF).tocsr()[P,:]
@property
def permuteE(self):
#TODO: cache these?
if self.dim == 2:
P = SortGrid(self.gridFy)
P += SortGrid(self.gridFx, offset=self.nEx)
return sp.identity(self.nE).tocsr()[P,:]
if self.dim == 3:
raise Exception()
def _structureChange(self):
deleteThese = ['__sortedInds', '_gridCC', '_gridN', '_gridFx', '_gridFy', '_gridFz', '_gridEx', '_gridEy', '_gridEz', '_area', '_edge', '_vol']
for p in deleteThese:
if hasattr(self, p): delattr(self, p)
self.__dirty__ = True
def _index(self, pointer):
assert len(pointer) is self.dim+1
assert pointer[-1] <= self.levels
return TreeUtils.index(self.dim, MAX_BITS, self._levelBits, pointer[:-1], pointer[-1])
def _pointer(self, index):
assert type(index) in [int, long]
return TreeUtils.point(self.dim, MAX_BITS, self._levelBits, index)
def __contains__(self, v):
if type(v) in [int, long]:
return v in self._treeInds
return self._index(v) in self._treeInds
def refine(self, function=None, recursive=True, cells=None, balance=True, _inRecursion=False):
if not _inRecursion:
self._structureChange()
print 'Refining Mesh'
cells = cells if cells is not None else sorted(self._treeInds)
recurse = []
tic = time.time()
for cell in cells:
p = self._pointer(cell)
do = function(self._cellC(cell)) > p[-1]
if do:
recurse += self._refineCell(cell)
print ' ', time.time() - tic
if recursive and len(recurse) > 0:
recurse += self.refine(function=function, recursive=True, cells=recurse, balance=balance, _inRecursion=True)
if balance and not _inRecursion:
self.balance()
return recurse
def _refineCell(self, pointer):
pointer = self._asPointer(pointer)
ind = self._asIndex(pointer)
assert ind in self
h = self._levelWidth(pointer[-1])/2 # halfWidth
nL = pointer[-1] + 1 # new level
add = lambda p:p[0]+p[1]
added = []
def addCell(p):
i = self._index(p+[nL])
self._treeInds.add(i)
added.append(i)
addCell(map(add, zip(pointer[:-1], [0,0,0][:self.dim])))
addCell(map(add, zip(pointer[:-1], [h,0,0][:self.dim])))
addCell(map(add, zip(pointer[:-1], [0,h,0][:self.dim])))
addCell(map(add, zip(pointer[:-1], [h,h,0][:self.dim])))
if self.dim == 3:
addCell(map(add, zip(pointer[:-1], [0,0,h])))
addCell(map(add, zip(pointer[:-1], [h,0,h])))
addCell(map(add, zip(pointer[:-1], [0,h,h])))
addCell(map(add, zip(pointer[:-1], [h,h,h])))
self._treeInds.remove(ind)
return added
def corsen(self, function=None):
self._structureChange()
raise Exception('Not yet implemented')
def _corsenCell(self, pointer):
raise Exception('Not yet implemented')
def _asPointer(self, ind):
if type(ind) in [int, long]:
return self._pointer(ind)
if type(ind) is list:
assert len(ind) == (self.dim + 1), str(ind) +' is not valid pointer'
assert ind[-1] <= self.levels, str(ind) +' is not valid pointer'
return ind
if isinstance(ind, np.ndarray):
return ind.tolist()
raise Exception
def _asIndex(self, pointer):
if type(pointer) in [int, long]:
return pointer
if type(pointer) is list:
return self._index(pointer)
raise Exception
def _childPointers(self, pointer, direction=0, positive=True):
l = self._levelWidth(pointer[-1] + 1)
if self.dim == 2:
children = [
[pointer[0] , pointer[1] , pointer[-1] + 1],
[pointer[0] + l, pointer[1] , pointer[-1] + 1],
[pointer[0] , pointer[1] + l, pointer[-1] + 1],
[pointer[0] + l, pointer[1] + l, pointer[-1] + 1]
]
elif self.dim == 3:
children = [
[pointer[0] , pointer[1] , pointer[2] , pointer[-1] + 1],
[pointer[0] + l, pointer[1] , pointer[2] , pointer[-1] + 1],
[pointer[0] , pointer[1] + l, pointer[2] , pointer[-1] + 1],
[pointer[0] + l, pointer[1] + l, pointer[2] , pointer[-1] + 1],
[pointer[0] , pointer[1] , pointer[2] + l, pointer[-1] + 1],
[pointer[0] + l, pointer[1] , pointer[2] + l, pointer[-1] + 1],
[pointer[0] , pointer[1] + l, pointer[2] + l, pointer[-1] + 1],
[pointer[0] + l, pointer[1] + l, pointer[2] + l, pointer[-1] + 1]
]
if direction == 0: ind = [0,2,4,6] if not positive else [1,3,5,7]
if direction == 1: ind = [0,1,4,5] if not positive else [2,3,6,7]
if direction == 2: ind = [0,1,2,3] if not positive else [4,5,6,7]
return [children[_] for _ in ind[:(self.dim-1)*2]]
def _parentPointer(self, pointer):
mod = self._levelWidth(pointer[-1] - 1)
return [p - (p % mod) for p in pointer[:-1]] + [pointer[-1]-1]
def _cellN(self, p):
p = self._asPointer(p)
return [hi[:p[ii]].sum() for ii, hi in enumerate(self.h)]
def _cellH(self, p):
p = self._asPointer(p)
w = self._levelWidth(p[-1])
return [hi[p[ii]:p[ii]+w].sum() for ii, hi in enumerate(self.h)]
def _cellC(self, p):
return (np.array(self._cellH(p))/2.0 + self._cellN(p)).tolist()
def _levelWidth(self, level):
return 2**(self.levels - level)
def _isInsideMesh(self, pointer):
inside = True
for p in pointer[:-1]:
inside = inside and p >= 0 and p < 2**self.levels
return inside
def _getNextCell(self, ind, direction=0, positive=True, _lookUp=True):
"""
Returns a None, int, list, or nested list
The int is the cell number.
"""
if direction >= self.dim: return None
pointer = self._asPointer(ind)
if pointer[-1] > self.levels: return None
step = (1 if positive else -1) * self._levelWidth(pointer[-1])
nextCell = [p if ii is not direction else p + step for ii, p in enumerate(pointer)]
# raise Exception(pointer, nextCell)
if not self._isInsideMesh(nextCell): return None
# it might be the same size as me?
if nextCell in self: return self._index(nextCell)
if nextCell[-1] + 1 <= self.levels: # if I am not the smallest.
children = self._childPointers(pointer, direction=direction, positive=positive)
nextCells = [self._getNextCell(child, direction=direction, positive=positive, _lookUp=False) for child in children]
if nextCells[0] is not None:
return nextCells
if not _lookUp: return None
# it might be bigger than me?
return self._getNextCell(self._parentPointer(pointer),
direction=direction, positive=positive)
def balance(self, recursive=True, cells=None, _inRecursion=False):
tic = time.time()
if not _inRecursion:
self._structureChange()
print 'Balancing Mesh:'
cells = cells if cells is not None else sorted(self._treeInds)
# calcDepth = lambda i: lambda A: i if type(A) is not list else max(map(calcDepth(i+1), A))
# flatten = lambda A: A if calcDepth(0)(A) == 1 else flatten([_ for __ in A for _ in (__ if type(__) is list else [__])])
recurse = set()
for cell in cells:
p = self._asPointer(cell)
if p[-1] == self.levels: continue
cs = range(6)
cs[0] = self._getNextCell(cell, direction=0, positive=False)
cs[1] = self._getNextCell(cell, direction=0, positive=True)
cs[2] = self._getNextCell(cell, direction=1, positive=False)
cs[3] = self._getNextCell(cell, direction=1, positive=True)
cs[4] = self._getNextCell(cell, direction=2, positive=False) # this will be None if in 2D
cs[5] = self._getNextCell(cell, direction=2, positive=True) # this will be None if in 2D
do = np.any([
type(c) is list and np.any([type(_) is list for _ in c])
for c in cs
if c is not None
])
# depth = calcDepth(0)(cs)
# print depth, depth > 2, do, [jj for jj in flatten(cs) if jj is not None]
# recurse += [jj for jj in flatten(cs) if jj is not None]
if do and cell in self:
newCells = self._refineCell(cell)
recurse.update([_ for _ in cs if type(_) in [int, long]]) # only add the bigger ones!
recurse.update(newCells)
print ' ', len(cells), time.time() - tic
if recursive and len(recurse) > 0:
self.balance(cells=sorted(recurse), _inRecursion=True)
@property
def gridCC(self):
if getattr(self, '_gridCC', None) is None:
self._gridCC = np.zeros((len(self._treeInds),self.dim))
for ii, ind in enumerate(self._sortedInds):
p = self._asPointer(ind)
self._gridCC[ii, :] = self._cellC(p)
return self._gridCC
@property
def gridN(self):
self.number()
return self._gridN
@property
def gridFx(self):
self.number()
return self._gridFx
@property
def gridFy(self):
self.number()
return self._gridFy
@property
def gridFz(self):
if self.dim < 3: return None
self.number()
return self._gridFz
@property
def gridEx(self):
if self.dim == 2: return self.gridFy
self.number()
return self._gridEx
@property
def gridEy(self):
if self.dim == 2: return self.gridFx
self.number()
return self._gridEy
@property
def gridEz(self):
if self.dim < 3: return None
self.number()
return self._gridEz
@property
def vol(self):
if getattr(self, '_vol', None) is None:
self._vol = np.zeros(len(self._treeInds))
for ii, ind in enumerate(self._sortedInds):
p = self._asPointer(ind)
self._vol[ii] = np.prod(self._cellH(p))
return self._vol
@property
def area(self):
self.number()
if getattr(self, '_area', None) is None:
Rlist = [0]*self.dim
Rlist[0] = self._deflationMatrix(self._facesX, self._hangingFx, self._fx2i, withHanging=False)
Rlist[1] = self._deflationMatrix(self._facesY, self._hangingFy, self._fy2i, withHanging=False)
if self.dim == 3:
Rlist[2] = self._deflationMatrix(self._facesZ, self._hangingFz, self._fz2i, withHanging=False)
R = sp.block_diag(Rlist)
self._area = R.T * (
np.r_[self._areaFxFull, self._areaFyFull] if self.dim == 2 else
np.r_[self._areaFxFull, self._areaFyFull, self._areaFzFull]
)
return self._area
@property
def edge(self):
self.number()
if self.dim == 2:
return np.r_[self._area[self.nFx:], self._area[:self.nFx]]
def _onSameLevel(self, i0, i1):
p0 = self._asPointer(i0)
p1 = self._asPointer(i1)
return p0[-1] == p1[-1]
def _numberNodes(self, force=False):
if not self.__dirtyNodes__ and not force: return
self._nodes = set()
for ind in self._treeInds:
p = self._asPointer(ind)
w = self._levelWidth(p[-1])
if self.dim == 2:
self._nodes.add(self._index([p[0] , p[1] , p[2]]))
self._nodes.add(self._index([p[0] + w, p[1] , p[2]]))
self._nodes.add(self._index([p[0] , p[1] + w, p[2]]))
self._nodes.add(self._index([p[0] + w, p[1] + w, p[2]]))
elif self.dim == 3:
self._nodes.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._nodes.add(self._index([p[0] + w, p[1] , p[2] , p[3]]))
self._nodes.add(self._index([p[0] , p[1] + w, p[2] , p[3]]))
self._nodes.add(self._index([p[0] + w, p[1] + w, p[2] , p[3]]))
self._nodes.add(self._index([p[0] , p[1] , p[2] + w, p[3]]))
self._nodes.add(self._index([p[0] + w, p[1] , p[2] + w, p[3]]))
self._nodes.add(self._index([p[0] , p[1] + w, p[2] + w, p[3]]))
self._nodes.add(self._index([p[0] + w, p[1] + w, p[2] + w, p[3]]))
gridN = []
self._n2i = dict()
for ii, n in enumerate(sorted(self._nodes)):
self._n2i[n] = ii
gridN.append( self._cellN( self._pointer(n) ) )
self._gridN = np.array(gridN)
self.__dirtyNodes__ = False
def _numberFaces(self, force=False):
if not self.__dirtyFaces__ and not force: return
self._facesX = set()
self._facesY = set()
if self.dim == 3:
self._facesZ = set()
for ind in self._treeInds:
p = self._asPointer(ind)
w = self._levelWidth(p[-1])
if self.dim == 2:
self._facesX.add(self._index([p[0] , p[1] , p[2]]))
self._facesX.add(self._index([p[0] + w, p[1] , p[2]]))
self._facesY.add(self._index([p[0] , p[1] , p[2]]))
self._facesY.add(self._index([p[0] , p[1] + w, p[2]]))
elif self.dim == 3:
self._facesX.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._facesX.add(self._index([p[0] + w, p[1] , p[2] , p[3]]))
self._facesY.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._facesY.add(self._index([p[0] , p[1] + w, p[2] , p[3]]))
self._facesZ.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._facesZ.add(self._index([p[0] , p[1] , p[2] + w, p[3]]))
gridFx = []
areaFx = []
self._fx2i = dict()
for ii, fx in enumerate(sorted(self._facesX)):
self._fx2i[fx] = ii
p = self._pointer(fx)
n, h = self._cellN(p), self._cellH(p)
if self.dim == 2:
gridFx.append( [n[0], n[1] + h[1]/2.0] )
areaFx.append( h[1] )
elif self.dim == 3:
gridFx.append( [n[0], n[1] + h[1]/2.0, n[2] + h[2]/2.0] )
areaFx.append( h[1]*h[2] )
self._gridFx = np.array(gridFx)
self._areaFxFull = np.array(areaFx)
gridFy = []
areaFy = []
self._fy2i = dict()
for ii, fy in enumerate(sorted(self._facesY)):
self._fy2i[fy] = ii
p = self._pointer(fy)
n, h = self._cellN(p), self._cellH(p)
if self.dim == 2:
gridFy.append( [n[0] + h[0]/2.0, n[1]] )
areaFy.append( h[0] )
elif self.dim == 3:
gridFy.append( [n[0] + h[0]/2.0, n[1], n[2] + h[2]/2.0] )
areaFy.append( h[0]*h[2] )
self._gridFy = np.array(gridFy)
self._areaFyFull = np.array(areaFy)
if self.dim == 2:
self.__dirtyFaces__ = False
return
gridFz = []
areaFz = []
self._fz2i = dict()
for ii, fz in enumerate(sorted(self._facesZ)):
self._fz2i[fz] = ii
p = self._pointer(fz)
n, h = self._cellN(p), self._cellH(p)
gridFz.append( [n[0] + h[0]/2.0, n[1] + h[1]/2.0, n[2]] )
areaFz.append(h[0]*h[1])
self._gridFz = np.array(gridFz)
self._areaFzFull = np.array(areaFz)
self.__dirtyFaces__ = False
def _numberEdges(self, force=False):
if self.dim == 2: return
if not self.__dirtyEdges__ and not force: return
self._edgesX = set()
self._edgesY = set()
self._edgesZ = set()
for ind in self._treeInds:
p = self._asPointer(ind)
w = self._levelWidth(p[-1])
self._edgesX.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._edgesX.add(self._index([p[0] , p[1] + w, p[2] , p[3]]))
self._edgesX.add(self._index([p[0] , p[1] , p[2] + w, p[3]]))
self._edgesX.add(self._index([p[0] , p[1] + w, p[2] + w, p[3]]))
self._edgesY.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._edgesY.add(self._index([p[0] + w, p[1] , p[2] , p[3]]))
self._edgesY.add(self._index([p[0] , p[1] , p[2] + w, p[3]]))
self._edgesY.add(self._index([p[0] + w, p[1] , p[2] + w, p[3]]))
self._edgesZ.add(self._index([p[0] , p[1] , p[2] , p[3]]))
self._edgesZ.add(self._index([p[0] + w, p[1] , p[2] , p[3]]))
self._edgesZ.add(self._index([p[0] , p[1] + w, p[2] , p[3]]))
self._edgesZ.add(self._index([p[0] + w, p[1] + w, p[2] , p[3]]))
gridEx = []
self._ex2i = dict()
for ii, ex in enumerate(sorted(self._edgesX)):
self._ex2i[ex] = ii
p = self._pointer(ex)
n, h = self._cellN(p), self._cellH(p)
gridEx.append( [n[0] + h[0]/2.0, n[1], n[2]] )
self._gridEx = np.array(gridEx)
gridEy = []
self._ey2i = dict()
for ii, ey in enumerate(sorted(self._edgesY)):
self._ey2i[ey] = ii
p = self._pointer(ey)
n, h = self._cellN(p), self._cellH(p)
gridEy.append( [n[0], n[1] + h[1]/2.0, n[2]] )
self._gridEy = np.array(gridEy)
gridEz = []
self._ez2i = dict()
for ii, ez in enumerate(sorted(self._edgesZ)):
self._ez2i[ez] = ii
p = self._pointer(ez)
n, h = self._cellN(p), self._cellH(p)
gridEz.append( [n[0], n[1], n[2] + h[2]/2.0] )
self._gridEz = np.array(gridEz)
self.__dirtyEdges__ = False
def _hanging(self, force=False):
if not self.__dirtyHanging__ and not force: return
self._numberNodes()
self._numberFaces()
self._numberEdges()
self._hangingN = dict()
self._hangingFx = dict()
self._hangingFy = dict()
if self.dim == 3:
self._hangingFz = dict()
self._hangingEx = dict()
self._hangingEy = dict()
self._hangingEz = dict()
# Compute from x faces
for fx in self._facesX:
p = self._pointer(fx)
if p[-1] + 1 > self.levels: continue
sl = p[-1] + 1 #: small level
test = self._index(p[:-1] + [sl])
if test not in self._facesX:
# Return early without checking the other faces
continue
w = self._levelWidth(sl)
if self.dim == 2:
self._hangingFx[self._fx2i[test ]] = ([self._fx2i[fx], 0.5], )
self._hangingFx[self._fx2i[self._index([p[0] , p[1] + w, sl])]] = ([self._fx2i[fx], 0.5], )
n0, n1 = fx, self._index([p[0], p[1] + 2*w, p[-1]])
self._hangingN[self._n2i[test ]] = ([self._n2i[n0], 1.0], )
self._hangingN[self._n2i[self._index([p[0] , p[1] + w, sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n1], 0.5])
self._hangingN[self._n2i[self._index([p[0] , p[1] + 2*w, sl])]] = ([self._n2i[n1], 1.0], )
elif self.dim == 3:
ey0 = fx
ey1 = self._index([p[0], p[1] , p[2] + 2*w, p[-1]])
ez0 = fx
ez1 = self._index([p[0], p[1] + 2*w, p[2] , p[-1]])
n0 = fx
n1 = self._index([p[0], p[1] + 2*w, p[2] , p[-1]])
n2 = self._index([p[0], p[1] , p[2] + 2*w, p[-1]])
n3 = self._index([p[0], p[1] + 2*w, p[2] + 2*w, p[-1]])
self._hangingFx[self._fx2i[test ]] = ([self._fx2i[fx], 0.25], )
self._hangingFx[self._fx2i[self._index([p[0], p[1] + w, p[2] , sl])]] = ([self._fx2i[fx], 0.25], )
self._hangingFx[self._fx2i[self._index([p[0], p[1] , p[2] + w, sl])]] = ([self._fx2i[fx], 0.25], )
self._hangingFx[self._fx2i[self._index([p[0], p[1] + w, p[2] + w, sl])]] = ([self._fx2i[fx], 0.25], )
self._hangingEy[self._ey2i[test ]] = ([self._ey2i[ey0], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0], p[1] + w, p[2] , sl])]] = ([self._ey2i[ey0], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0], p[1] , p[2] + w, sl])]] = ([self._ey2i[ey0], 0.25], [self._ey2i[ey1], 0.25])
self._hangingEy[self._ey2i[self._index([p[0], p[1] + w, p[2] + w, sl])]] = ([self._ey2i[ey0], 0.25], [self._ey2i[ey1], 0.25])
self._hangingEy[self._ey2i[self._index([p[0], p[1] , p[2] + 2*w, sl])]] = ([self._ey2i[ey1], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0], p[1] + w, p[2] + 2*w, sl])]] = ([self._ey2i[ey1], 0.5], )
self._hangingEz[self._ez2i[test ]] = ([self._ez2i[ez0], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0], p[1] , p[2] + w, sl])]] = ([self._ez2i[ez0], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0], p[1] + w, p[2] , sl])]] = ([self._ez2i[ez0], 0.25], [self._ez2i[ez1], 0.25])
self._hangingEz[self._ez2i[self._index([p[0], p[1] + w, p[2] + w, sl])]] = ([self._ez2i[ez0], 0.25], [self._ez2i[ez1], 0.25])
self._hangingEz[self._ez2i[self._index([p[0], p[1] + 2*w, p[2] , sl])]] = ([self._ez2i[ez1], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0], p[1] + 2*w, p[2] + w, sl])]] = ([self._ez2i[ez1], 0.5], )
self._hangingN[ self._n2i[ test ]] = ([self._n2i[n0], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0], p[1] + w, p[2] , sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n1], 0.5])
self._hangingN[ self._n2i[ self._index([p[0], p[1] + 2*w, p[2] , sl])]] = ([self._n2i[n1], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0], p[1] , p[2] + w, sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n2], 0.5])
self._hangingN[ self._n2i[ self._index([p[0], p[1] + w, p[2] + w, sl])]] = ([self._n2i[n0], 0.25], [self._n2i[n1], 0.25], [self._n2i[n2], 0.25], [self._n2i[n3], 0.25])
self._hangingN[ self._n2i[ self._index([p[0], p[1] + 2*w, p[2] + w, sl])]] = ([self._n2i[n1], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0], p[1] , p[2] + 2*w, sl])]] = ([self._n2i[n2], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0], p[1] + w, p[2] + 2*w, sl])]] = ([self._n2i[n2], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0], p[1] + 2*w, p[2] + 2*w, sl])]] = ([self._n2i[n3], 1.0], )
# Compute from y faces
for fy in self._facesY:
p = self._pointer(fy)
if p[-1] + 1 > self.levels: continue
sl = p[-1] + 1 #: small level
test = self._index(p[:-1] + [sl])
if test not in self._facesY:
# Return early without checking the other faces
continue
w = self._levelWidth(sl)
if self.dim == 2:
self._hangingFy[self._fy2i[test ]] = ([self._fy2i[fy], 0.5], )
self._hangingFy[self._fy2i[self._index([p[0] + w, p[1] , sl])]] = ([self._fy2i[fy], 0.5], )
n0, n1 = fy, self._index([p[0] + 2*w, p[1], p[-1]])
self._hangingN[self._n2i[test ]] = ([self._n2i[n0], 1.0], )
self._hangingN[self._n2i[self._index([p[0] + w, p[1] , sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n1], 0.5])
self._hangingN[self._n2i[self._index([p[0] + 2*w, p[1] , sl])]] = ([self._n2i[n1], 1.0], )
elif self.dim == 3:
ex0 = fy
ex1 = self._index([p[0] , p[1], p[2] + 2*w, p[-1]])
ez0 = fy
ez1 = self._index([p[0] + 2*w, p[1], p[2] , p[-1]])
n0 = fy
n1 = self._index([p[0] + 2*w, p[1], p[2] , p[-1]])
n2 = self._index([p[0] , p[1], p[2] + 2*w, p[-1]])
n3 = self._index([p[0] + 2*w, p[1], p[2] + 2*w, p[-1]])
self._hangingFy[self._fy2i[test ]] = ([self._fy2i[fy], 0.25], )
self._hangingFy[self._fy2i[self._index([p[0] + w, p[1], p[2] , sl])]] = ([self._fy2i[fy], 0.25], )
self._hangingFy[self._fy2i[self._index([p[0] , p[1], p[2] + w, sl])]] = ([self._fy2i[fy], 0.25], )
self._hangingFy[self._fy2i[self._index([p[0] + w, p[1], p[2] + w, sl])]] = ([self._fy2i[fy], 0.25], )
self._hangingEx[self._ex2i[test ]] = ([self._ex2i[ex0], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1], p[2] , sl])]] = ([self._ex2i[ex0], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] , p[1], p[2] + w, sl])]] = ([self._ex2i[ex0], 0.25], [self._ex2i[ex1], 0.25])
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1], p[2] + w, sl])]] = ([self._ex2i[ex0], 0.25], [self._ex2i[ex1], 0.25])
self._hangingEx[self._ex2i[self._index([p[0] , p[1], p[2] + 2*w, sl])]] = ([self._ex2i[ex1], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1], p[2] + 2*w, sl])]] = ([self._ex2i[ex1], 0.5], )
self._hangingEz[self._ez2i[test ]] = ([self._ez2i[ez0], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0] , p[1], p[2] + w, sl])]] = ([self._ez2i[ez0], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0] + w, p[1], p[2] , sl])]] = ([self._ez2i[ez0], 0.25], [self._ez2i[ez1], 0.25])
self._hangingEz[self._ez2i[self._index([p[0] + w, p[1], p[2] + w, sl])]] = ([self._ez2i[ez0], 0.25], [self._ez2i[ez1], 0.25])
self._hangingEz[self._ez2i[self._index([p[0] + 2*w, p[1], p[2] , sl])]] = ([self._ez2i[ez1], 0.5], )
self._hangingEz[self._ez2i[self._index([p[0] + 2*w, p[1], p[2] + w, sl])]] = ([self._ez2i[ez1], 0.5], )
self._hangingN[ self._n2i[ test ]] = ([self._n2i[n0], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1], p[2] , sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n1], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1], p[2] , sl])]] = ([self._n2i[n1], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] , p[1], p[2] + w, sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n2], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1], p[2] + w, sl])]] = ([self._n2i[n0], 0.25], [self._n2i[n1], 0.25], [self._n2i[n2], 0.25], [self._n2i[n3], 0.25])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1], p[2] + w, sl])]] = ([self._n2i[n1], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] , p[1], p[2] + 2*w, sl])]] = ([self._n2i[n2], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1], p[2] + 2*w, sl])]] = ([self._n2i[n2], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1], p[2] + 2*w, sl])]] = ([self._n2i[n3], 1.0], )
if self.dim == 2:
self.__dirtyHanging__ = False
return
# Compute from z faces
for fz in self._facesZ:
p = self._pointer(fz)
if p[-1] + 1 > self.levels: continue
sl = p[-1] + 1 #: small level
test = self._index(p[:-1] + [sl])
if test not in self._facesZ:
# Return early without checking the other faces
continue
w = self._levelWidth(sl)
ex0 = fz
ex1 = self._index([p[0] , p[1] + 2*w, p[2], p[-1]])
ey0 = fz
ey1 = self._index([p[0] + 2*w, p[1] , p[2], p[-1]])
n0 = fz
n1 = self._index([p[0] + 2*w, p[1] , p[2], p[-1]])
n2 = self._index([p[0] , p[1] + 2*w, p[2], p[-1]])
n3 = self._index([p[0] + 2*w, p[1] + 2*w, p[2], p[-1]])
self._hangingFz[self._fz2i[test ]] = ([self._fz2i[fz], 0.25], )
self._hangingFz[self._fz2i[self._index([p[0] + w, p[1] , p[2], sl])]] = ([self._fz2i[fz], 0.25], )
self._hangingFz[self._fz2i[self._index([p[0] , p[1] + w, p[2], sl])]] = ([self._fz2i[fz], 0.25], )
self._hangingFz[self._fz2i[self._index([p[0] + w, p[1] + w, p[2], sl])]] = ([self._fz2i[fz], 0.25], )
self._hangingEx[self._ex2i[test ]] = ([self._ex2i[ex0], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1] , p[2], sl])]] = ([self._ex2i[ex0], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] , p[1] + w, p[2], sl])]] = ([self._ex2i[ex0], 0.25], [self._ex2i[ex1], 0.25])
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1] + w, p[2], sl])]] = ([self._ex2i[ex0], 0.25], [self._ex2i[ex1], 0.25])
self._hangingEx[self._ex2i[self._index([p[0] , p[1] + 2*w, p[2], sl])]] = ([self._ex2i[ex1], 0.5], )
self._hangingEx[self._ex2i[self._index([p[0] + w, p[1] + 2*w, p[2], sl])]] = ([self._ex2i[ex1], 0.5], )
self._hangingEy[self._ey2i[test ]] = ([self._ey2i[ey0], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0] , p[1] + w, p[2], sl])]] = ([self._ey2i[ey0], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0] + w, p[1] , p[2], sl])]] = ([self._ey2i[ey0], 0.25], [self._ey2i[ey1], 0.25])
self._hangingEy[self._ey2i[self._index([p[0] + w, p[1] + w, p[2], sl])]] = ([self._ey2i[ey0], 0.25], [self._ey2i[ey1], 0.25])
self._hangingEy[self._ey2i[self._index([p[0] + 2*w, p[1] , p[2], sl])]] = ([self._ey2i[ey1], 0.5], )
self._hangingEy[self._ey2i[self._index([p[0] + 2*w, p[1] + w, p[2], sl])]] = ([self._ey2i[ey1], 0.5], )
self._hangingN[ self._n2i[ test ]] = ([self._n2i[n0], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1] , p[2], sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n1], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1] , p[2], sl])]] = ([self._n2i[n1], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] , p[1] + w, p[2], sl])]] = ([self._n2i[n0], 0.5], [self._n2i[n2], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1] + w, p[2], sl])]] = ([self._n2i[n0], 0.25], [self._n2i[n1], 0.25], [self._n2i[n2], 0.25], [self._n2i[n3], 0.25])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1] + w, p[2], sl])]] = ([self._n2i[n1], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] , p[1] + 2*w, p[2], sl])]] = ([self._n2i[n2], 1.0], )
self._hangingN[ self._n2i[ self._index([p[0] + w, p[1] + 2*w, p[2], sl])]] = ([self._n2i[n2], 0.5], [self._n2i[n3], 0.5])
self._hangingN[ self._n2i[ self._index([p[0] + 2*w, p[1] + 2*w, p[2], sl])]] = ([self._n2i[n3], 1.0], )
self.__dirtyHanging__ = False
def number(self, force=False):
if not self.__dirty__ and not force: return
self._hanging()
return
def _deflationMatrix(self, theSet, theHang, theIndex, withHanging=True):
reducedInd = dict() # final reduced index
ii = 0
I,J,V = [],[],[]
for fx in sorted(theSet):
if theIndex[fx] not in theHang:
reducedInd[theIndex[fx]] = ii
I += [theIndex[fx]]
J += [ii]
V += [1.0]
ii += 1
if withHanging:
for hfkey in theHang.keys():
hf = theHang[hfkey]
I += [hfkey]*len(hf)
J += [reducedInd[_[0]] for _ in hf]
V += [_[1] for _ in hf]
return sp.csr_matrix((V,(I,J)), shape=(len(theSet), len(reducedInd)))
@property
def faceDiv(self):
if getattr(self, '_faceDiv', None) is None:
self.number()
# TODO: Preallocate!
I, J, V = [], [], []
PM = [-1,1]*self.dim # plus / minus
offset = [0,0,self.nFx,self.nFx,self.nFx+self.nFy,self.nFx+self.nFy]
for ii, ind in enumerate(self._sortedInds):
p = self._pointer(ind)
w = self._levelWidth(p[-1])
if self.dim == 2:
faces = [
self._fx2i[self._index([ p[0] , p[1] , p[2]])],
self._fx2i[self._index([ p[0] + w, p[1] , p[2]])],
self._fy2i[self._index([ p[0] , p[1] , p[2]])],
self._fy2i[self._index([ p[0] , p[1] + w, p[2]])]
]
elif self.dim == 3:
faces = [
self._fx2i[self._index([ p[0] , p[1] , p[2] , p[3]])],
self._fx2i[self._index([ p[0] + w, p[1] , p[2] , p[3]])],
self._fy2i[self._index([ p[0] , p[1] , p[2] , p[3]])],
self._fy2i[self._index([ p[0] , p[1] + w, p[2] , p[3]])],
self._fz2i[self._index([ p[0] , p[1] , p[2] , p[3]])],
self._fz2i[self._index([ p[0] , p[1] , p[2] + w, p[3]])]
]
for off, pm, face in zip(offset,PM,faces):
I += [ii]
J += [face + off]
V += [pm]
# total number of faces
tnF = len(self._facesX) + len(self._facesY) + (0 if self.dim == 2 else len(self._facesZ))
D = sp.csr_matrix((V,(I,J)), shape=(self.nC, tnF))
Rlist = [0]*self.dim
Rlist[0] = self._deflationMatrix(self._facesX, self._hangingFx, self._fx2i)
Rlist[1] = self._deflationMatrix(self._facesY, self._hangingFy, self._fy2i)
if self.dim == 3:
Rlist[2] = self._deflationMatrix(self._facesZ, self._hangingFz, self._fz2i)
R = sp.block_diag(Rlist)
VOL = self.vol
S = self.area
self._faceDiv = Utils.sdiag(1.0/VOL)*D*R*Utils.sdiag(S)
return self._faceDiv
@property
def edgeCurl(self):
"""Construct the 3D curl operator."""
assert self.dim > 2, "Edge Curl only programed for 3D."
if getattr(self, '_edgeCurl', None) is None:
self.number()
# TODO: Preallocate!
I, J, V = [], [], []
for face in self.faces:
for ii, edge in enumerate([face.edge0, face.edge1, face.edge2, face.edge3]):
j = edge.index
I += [face.num]*len(j)
J += j
isNeg = [True, False, True, False]
V += [-1 if isNeg[ii] else 1]*len(j)
C = sp.csr_matrix((V,(I,J)), shape=(self.nF, self.nE))
S = self.area
L = self.edge
self._edgeCurl = Utils.sdiag(1/S)*C*Utils.sdiag(L)
return self._edgeCurl
def plotGrid(self, ax=None, showIt=False,
grid=True,
cells=True, cellLine=False,
nodes=False,
facesX=False, facesY=False, facesZ=False,
edgesX=False, edgesY=False, edgesZ=False):
# self.number()
axOpts = {'projection':'3d'} if self.dim == 3 else {}
if ax is None:
ax = plt.subplot(111, **axOpts)
else:
assert isinstance(ax,matplotlib.axes.Axes), "ax must be an Axes!"
fig = ax.figure
if grid:
for ind in self._sortedInds:
p = self._asPointer(ind)
n = self._cellN(p)
h = self._cellH(p)
x = [n[0] , n[0] + h[0], n[0] + h[0], n[0] , n[0]]
y = [n[1] , n[1] , n[1] + h[1], n[1] + h[1], n[1]]
if self.dim == 2:
ax.plot(x,y, 'b-')
elif self.dim == 3:
ax.plot(x,y, 'b-', zs=[n[2]]*5)
z = [n[2] + h[2], n[2] + h[2], n[2] + h[2], n[2] + h[2], n[2] + h[2]]
ax.plot(x,y, 'b-', zs=z)
sides = [0,0], [h[0],0], [0,h[1]], [h[0],h[1]]
for s in sides:
x = [n[0] + s[0], n[0] + s[0]]
y = [n[1] + s[1], n[1] + s[1]]
z = [n[2] , n[2] + h[2]]
ax.plot(x,y, 'b-', zs=z)
if self.dim == 2:
if cells:
ax.plot(self.gridCC[:,0], self.gridCC[:,1], 'r.')
if cellLine:
ax.plot(self.gridCC[:,0], self.gridCC[:,1], 'r:')
ax.plot(self.gridCC[[0,-1],0], self.gridCC[[0,-1],1], 'ro')
if nodes:
ax.plot(self.gridN[:,0], self.gridN[:,1], 'ms')
ax.plot(self.gridN[self._hangingN.keys(),0], self.gridN[self._hangingN.keys(),1], 'ms', ms=10, mfc='none', mec='m')
if facesX:
ax.plot(self.gridFx[self._hangingFx.keys(),0], self.gridFx[self._hangingFx.keys(),1], 'gs', ms=10, mfc='none', mec='g')
ax.plot(self.gridFx[:,0], self.gridFx[:,1], 'g>')
if facesY:
ax.plot(self.gridFy[self._hangingFy.keys(),0], self.gridFy[self._hangingFy.keys(),1], 'gs', ms=10, mfc='none', mec='g')
ax.plot(self.gridFy[:,0], self.gridFy[:,1], 'g^')
elif self.dim == 3:
if cells:
ax.plot(self.gridCC[:,0], self.gridCC[:,1], 'r.', zs=self.gridCC[:,2])
if cellLine:
ax.plot(self.gridCC[:,0], self.gridCC[:,1], 'r:', zs=self.gridCC[:,2])
ax.plot(self.gridCC[[0,-1],0], self.gridCC[[0,-1],1], 'ro', zs=self.gridCC[[0,-1],2])
if nodes:
ax.plot(self.gridN[:,0], self.gridN[:,1], 'ms', zs=self.gridN[:,2])
ax.plot(self.gridN[self._hangingN.keys(),0], self.gridN[self._hangingN.keys(),1], 'ms', ms=10, mfc='none', mec='m', zs=self.gridN[self._hangingN.keys(),2])
for key in self._hangingN.keys():
for hf in self._hangingN[key]:
ind = [key, hf[0]]
ax.plot(self.gridN[ind,0], self.gridN[ind,1], 'm:', zs=self.gridN[ind,2])
if facesX:
ax.plot(self.gridFx[:,0], self.gridFx[:,1], 'g>', zs=self.gridFx[:,2])
ax.plot(self.gridFx[self._hangingFx.keys(),0], self.gridFx[self._hangingFx.keys(),1], 'gs', ms=10, mfc='none', mec='g', zs=self.gridFx[self._hangingFx.keys(),2])
for key in self._hangingFx.keys():
for hf in self._hangingFx[key]:
ind = [key, hf[0]]
ax.plot(self.gridFx[ind,0], self.gridFx[ind,1], 'g:', zs=self.gridFx[ind,2])
if facesY:
ax.plot(self.gridFy[:,0], self.gridFy[:,1], 'g^', zs=self.gridFy[:,2])
ax.plot(self.gridFy[self._hangingFy.keys(),0], self.gridFy[self._hangingFy.keys(),1], 'gs', ms=10, mfc='none', mec='g', zs=self.gridFy[self._hangingFy.keys(),2])
for key in self._hangingFy.keys():
for hf in self._hangingFy[key]:
ind = [key, hf[0]]
ax.plot(self.gridFy[ind,0], self.gridFy[ind,1], 'g:', zs=self.gridFy[ind,2])
if facesZ:
ax.plot(self.gridFz[:,0], self.gridFz[:,1], 'g^', zs=self.gridFz[:,2])
ax.plot(self.gridFz[self._hangingFz.keys(),0], self.gridFz[self._hangingFz.keys(),1], 'gs', ms=10, mfc='none', mec='g', zs=self.gridFz[self._hangingFz.keys(),2])
for key in self._hangingFz.keys():
for hf in self._hangingFz[key]:
ind = [key, hf[0]]
ax.plot(self.gridFz[ind,0], self.gridFz[ind,1], 'g:', zs=self.gridFz[ind,2])
if edgesX:
ax.plot(self.gridEx[:,0], self.gridEx[:,1], 'k>', zs=self.gridEx[:,2])
ax.plot(self.gridEx[self._hangingEx.keys(),0], self.gridEx[self._hangingEx.keys(),1], 'ks', ms=10, mfc='none', mec='k', zs=self.gridEx[self._hangingEx.keys(),2])
for key in self._hangingEx.keys():
for hf in self._hangingEx[key]:
ind = [key, hf[0]]
ax.plot(self.gridEx[ind,0], self.gridEx[ind,1], 'k:', zs=self.gridEx[ind,2])
if edgesY:
ax.plot(self.gridEy[:,0], self.gridEy[:,1], 'k<', zs=self.gridEy[:,2])
ax.plot(self.gridEy[self._hangingEy.keys(),0], self.gridEy[self._hangingEy.keys(),1], 'ks', ms=10, mfc='none', mec='k', zs=self.gridEy[self._hangingEy.keys(),2])
for key in self._hangingEy.keys():
for hf in self._hangingEy[key]:
ind = [key, hf[0]]
ax.plot(self.gridEy[ind,0], self.gridEy[ind,1], 'k:', zs=self.gridEy[ind,2])
if edgesZ:
ax.plot(self.gridEz[:,0], self.gridEz[:,1], 'k^', zs=self.gridEz[:,2])
ax.plot(self.gridEz[self._hangingEz.keys(),0], self.gridEz[self._hangingEz.keys(),1], 'ks', ms=10, mfc='none', mec='k', zs=self.gridEz[self._hangingEz.keys(),2])
for key in self._hangingEz.keys():
for hf in self._hangingEz[key]:
ind = [key, hf[0]]
ax.plot(self.gridEz[ind,0], self.gridEz[ind,1], 'k:', zs=self.gridEz[ind,2])
# ax.axis('equal')
if showIt:plt.show()
if __name__ == '__main__':
def function(xc):
r = xc - np.array([0.5*128]*len(xc))
dist = np.sqrt(r.dot(r))
# if dist < 0.05:
# return 5
if dist < 0.1*128:
return 7
if dist < 0.3*128:
return 5
if dist < 1.0*128:
return 2
else:
return 0
T = Tree([[(1,128)],[(1,128)],[(1,128)]],levels=7)
# T = Tree([[(1,16)],[(1,16)]],levels=4)
# T = Tree([[(1,128)],[(1,128)]],levels=7)
# T.refine(lambda xc:6, balance=False)
# T._index([0,0,0])
# T._pointer(0)
tic = time.time()
T.refine(function)#, balance=False)
print time.time() - tic
print T.nC
asdf
# T._refineCell([8,0,1])
# T._refineCell([8,0,2])
# T._refineCell([12,0,2])
# T._refineCell([8,4,2])
# T._refineCell([6,0,3])
# T._refineCell([8,8,1])
# T._refineCell([0,0,0,1])
ax = plt.subplot(211)
# ax.spy(T.faceDiv)
T.plotGrid(ax=ax)
# R = deflationMatrix(T._facesX, T._hangingFx, T._fx2i)
# print R
ax = plt.subplot(212)#, projection='3d')
# ax.spy(R)
# ax = plt.subplot(313)
# ax.spy(T.faceDiv[:,:T.nFx] * R)
T.balance()
T.plotGrid(ax=ax)
# cx = T._getNextCell([0,0,1],direction=0,positive=True)
# print cx
# # print [T._asPointer(_) for _ in cx]
# cx = T._getNextCell([8,0,3],direction=0,positive=False)
# print T._asPointer(cx)
# cx = T._getNextCell([8,8,1],direction=1,positive=False)
# print cx, #[T._asPointer(_) for _ in cx]
# cm = T._getNextCell([64,80,4],direction=0,positive=False)
# cy = T._getNextCell([64,80,4],direction=1,positive=True)
# cp = T._getNextCell([64,80,4],direction=1,positive=False)
# ax.plot( T._cellN([4,0,1])[0],T._cellN([4,0,1])[1], 'yd')
# ax.plot( T._cellN(cx)[0],T._cellN(cx)[1], 'ys')
# ax.plot( T._cellN(cm)[0],T._cellN(cm)[1], 'ys')
# ax.plot( T._cellN(cy)[0],T._cellN(cy)[1], 'ys')
# ax.plot( T._cellN(cp[0])[0],T._cellN(cp[0])[1], 'ys')
# ax.plot( T._cellN(cp[1])[0],T._cellN(cp[1])[1], 'ys')
# print T.nN
plt.show()