Source code for yade.utils

# encoding: utf-8
#
# utility functions for yade
#
# 2008-2009 © Václav Šmilauer <eudoxos@arcig.cz>

"""Heap of functions that don't (yet) fit anywhere else.

Devs: please DO NOT ADD more functions here, it is getting too crowded!
"""

import math,random,doctest,geom,numpy
from yade import *
from yade.wrapper import *
from miniEigen import *
try: # use psyco if available
   import psyco
   psyco.full()
except ImportError: pass


# c++ implementations for performance reasons
from yade._utils import *

def saveVars(mark='',loadNow=True,**kw):
   """Save passed variables into the simulation so that it can be recovered when the simulation is loaded again.

   For example, variables *a*, *b* and *c* are defined. To save them, use::

      >>> from yade import utils
      >>> utils.saveVars('something',a=1,b=2,c=3)
      >>> from yade.params.something import *
      >>> a,b,c
      (1, 2, 3)

   those variables will be save in the .xml file, when the simulation itself is saved. To recover those variables once the .xml is loaded again, use

      >>> utils.loadVars('something')

   and they will be defined in the yade.params.\ *mark* module. The *loadNow* parameter calls :yref:`yade.utils.loadVars` after saving automatically.
   """
   import cPickle
   Omega().tags['pickledPythonVariablesDictionary'+mark]=cPickle.dumps(kw)
   if loadNow: loadVars(mark)

def loadVars(mark=None):
   """Load variables from :yref:`yade.utils.saveVars`, which are saved inside the simulation.
   If ``mark==None``, all save variables are loaded. Otherwise only those with
   the mark passed."""
   import cPickle, types, sys, warnings
   def loadOne(d,mark=None):
      """Load given dictionary into a synthesized module yade.params.name (or yade.params if *name* is not given). Update yade.params.__all__ as well."""
      import yade.params
      if mark:
         if mark in yade.params.__dict__: warnings.warn('Overwriting yade.params.%s which already exists.'%mark)
         modName='yade.params.'+mark
         mod=types.ModuleType(modName)
         mod.__dict__.update(d)
         mod.__all__=list(d.keys()) # otherwise params starting with underscore would not be imported
         sys.modules[modName]=mod
         yade.params.__all__.append(mark)
         yade.params.__dict__[mark]=mod
      else:
         yade.params.__all__+=list(d.keys())
         yade.params.__dict__.update(d)
   if mark!=None:
      d=cPickle.loads(Omega().tags['pickledPythonVariablesDictionary'+mark])
      loadOne(d,mark)
   else: # load everything one by one
      for m in Omega().tags.keys():
         if m.startswith('pickledPythonVariablesDictionary'):
            loadVars(m[len('pickledPythonVariableDictionary')+1:])


def SpherePWaveTimeStep(radius,density,young):
   r"""Compute P-wave critical timestep for a single (presumably representative) sphere, using formula for P-Wave propagation speed $\Delta t_{c}=\frac{r}{\sqrt{E/\rho}}$.
   If you want to compute minimum critical timestep for all spheres in the simulation, use :yref:`yade.utils.PWaveTimeStep` instead.

   >>> SpherePWaveTimeStep(1e-3,2400,30e9)
   2.8284271247461903e-07
   """
   from math import sqrt
   return radius/sqrt(young/density)

def randomColor():
   """Return random Vector3 with each component in interval 0…1 (uniform distribution)"""
   return Vector3(random.random(),random.random(),random.random())

def typedEngine(name):
   """Return first engine from current O.engines, identified by its type (as string). For example:

   >>> from yade import utils
   >>> O.engines=[InsertionSortCollider(),NewtonIntegrator(),GravityEngine()]
   >>> utils.typedEngine("NewtonIntegrator") == O.engines[1]
   True
   """
   return [e for e in Omega().engines if e.__class__.__name__==name][0]

def defaultMaterial():
   """Return default material, when creating bodies with :yref:`yade.utils.sphere` and friends, material is unspecified and there is no shared material defined yet. By default, this function returns::

      FrictMat(density=1e3,young=1e7,poisson=.3,frictionAngle=.5,label='defaultMat')
   """
   return FrictMat(density=1e3,young=1e7,poisson=.3,frictionAngle=.5,label='defaultMat')

def _commonBodySetup(b,volume,geomInertia,material,pos,noBound=False,resetState=True,dynamic=None,fixed=False):
   """Assign common body parameters."""
   if isinstance(material,int):
      if material<0 and len(O.materials)==0: O.materials.append(defaultMaterial());
      b.mat=O.materials[material]
   elif isinstance(material,str): b.mat=O.materials[material]
   elif isinstance(material,Material): b.mat=material
   elif callable(material): b.mat=material()
   else: raise TypeError("The 'material' argument must be None (for defaultMaterial), string (for shared material label), int (for shared material id) or Material instance.");
   ## resets state (!!)
   if resetState: b.state=b.mat.newAssocState()
   mass=volume*b.mat.density
   b.state.mass,b.state.inertia=mass,geomInertia*b.mat.density
   b.state.pos=b.state.refPos=pos
   b.bounded=(not noBound)
   if dynamic!=None:
      import warnings
      warnings.warn('dynamic=%s is deprecated, use fixed=%s instead'%(str(dynamic),str(not dynamic)),category=DeprecationWarning,stacklevel=2)
      fixed=not dynamic
   b.state.blockedDOFs=('xyzXYZ' if fixed else '')


def sphere(center,radius,dynamic=None,fixed=False,wire=False,color=None,highlight=False,material=-1,mask=1):
   """Create sphere with given parameters; mass and inertia computed automatically.

   Last assigned material is used by default (*material*=-1), and utils.defaultMaterial() will be used if no material is defined at all.

   :param Vector3 center: center
   :param float radius: radius
   :param float dynamic: deprecated, see "fixed"
   :param float fixed: generate the body with all DOFs blocked?
   :param material:
      specify :yref:`Body.material`; different types are accepted:
         * int: O.materials[material] will be used; as a special case, if material==-1 and there is no shared materials defined, utils.defaultMaterial() will be assigned to O.materials[0]
         * string: label of an existing material that will be used
         * :yref:`Material` instance: this instance will be used
         * callable: will be called without arguments; returned Material value will be used (Material factory object, if you like)
   :param int mask: :yref:`Body.mask` for the body
   :param wire: display as wire sphere?
   :param highlight: highlight this body in the viewer?
   :param Vector3-or-None: body's color, as normalized RGB; random color will be assigned if ``None`.
   
   :return:
      A Body instance with desired characteristics.


   Creating default shared material if none exists neither is given::

      >>> O.reset()
      >>> from yade import utils
      >>> len(O.materials)
      0
      >>> s0=utils.sphere([2,0,0],1)
      >>> len(O.materials)
      1

   Instance of material can be given::

      >>> s1=utils.sphere([0,0,0],1,wire=False,color=(0,1,0),material=ElastMat(young=30e9,density=2e3))
      >>> s1.shape.wire
      False
      >>> s1.shape.color
      Vector3(0,1,0)
      >>> s1.mat.density
      2000.0

   Material can be given by label::

      >>> O.materials.append(FrictMat(young=10e9,poisson=.11,label='myMaterial'))
      1
      >>> s2=utils.sphere([0,0,2],1,material='myMaterial')
      >>> s2.mat.label
      'myMaterial'
      >>> s2.mat.poisson
      0.11

   Finally, material can be a callable object (taking no arguments), which returns a Material instance.
   Use this if you don't call this function directly (for instance, through yade.pack.randomDensePack), passing
   only 1 *material* parameter, but you don't want material to be shared.

   For instance, randomized material properties can be created like this:

      >>> import random
      >>> def matFactory(): return ElastMat(young=1e10*random.random(),density=1e3+1e3*random.random())
      ...
      >>> s3=utils.sphere([0,2,0],1,material=matFactory)
      >>> s4=utils.sphere([1,2,0],1,material=matFactory)

   """
   b=Body()
   b.shape=Sphere(radius=radius,color=color if color else randomColor(),wire=wire,highlight=highlight)
   V=(4./3)*math.pi*radius**3
   geomInert=(2./5.)*V*radius**2
   _commonBodySetup(b,V,Vector3(geomInert,geomInert,geomInert),material,pos=center,dynamic=dynamic,fixed=fixed)
   b.aspherical=False
   b.mask=mask
   return b

def box(center,extents,orientation=[1,0,0,0],dynamic=None,fixed=False,wire=False,color=None,highlight=False,material=-1,mask=1):
   """Create box (cuboid) with given parameters.

   :param Vector3 extents: half-sizes along x,y,z axes

   See :yref:`yade.utils.sphere`'s documentation for meaning of other parameters."""
   b=Body()
   b.shape=Box(extents=extents,color=color if color else randomColor(),wire=wire,highlight=highlight)
   V=8*extents[0]*extents[1]*extents[2]
   geomInert=Vector3(4*(extents[1]**2+extents[2]**2),4*(extents[0]**2+extents[2]**2),4*(extents[0]**2+extents[1]**2))
   _commonBodySetup(b,V,geomInert,material,pos=center,dynamic=dynamic,fixed=fixed)
   b.mask=mask
   b.aspherical=True
   return b


def chainedCylinder(begin=Vector3(0,0,0),end=Vector3(1.,0.,0.),radius=0.2,dynamic=None,fixed=False,wire=False,color=None,highlight=False,material=-1,mask=1):
   """Create and connect a chainedCylinder with given parameters. The shape generated by repeted calls of this function is the Minkowski sum of polyline and sphere.

   :param Real radius: radius of sphere in the Minkowski sum.
   :param Vector3 begin: first point positioning the line in the Minkowski sum
   :param Vector3 last: last point positioning the line in the Minkowski sum

   In order to build a correct chain, last point of element of rank N must correspond to first point of element of rank N+1 in the same chain (with some tolerance, since bounding boxes will be used to create connections.

   :return: Body object with the :yref:`ChainedCylinder` :yref:`shape<Body.shape>`.
   """
   segment=end-begin
   b=Body()
   b.shape=ChainedCylinder(radius=radius,length=segment.norm(),color=color if color else randomColor(),wire=wire,highlight=highlight)
   b.shape.segment=segment
   V=2*(4./3)*math.pi*radius**3
   geomInert=(2./5.)*V*radius**2+b.shape.length*b.shape.length*2*(4./3)*math.pi*radius**3
   b.state=ChainedState()
   b.state.addToChain(O.bodies.append(b))
   _commonBodySetup(b,V,Vector3(geomInert,geomInert,geomInert),material,pos=begin,resetState=False,dynamic=dynamic,fixed=fixed)
   b.mask=mask
   b.bound=Aabb(color=[0,1,0])
   b.state.ori=b.state.ori.setFromTwoVectors(Vector3(0.,0.,1.),segment)
   if (end == begin): b.state.ori = Quaternion((1,0,0),0)
   return b

def wall(position,axis,sense=0,color=None,material=-1,mask=1):
   """Return ready-made wall body.

   :param float-or-Vector3 position: center of the wall. If float, it is the position along given axis, the other 2 components being zero
   :param ∈{0,1,2} axis: orientation of the wall normal (0,1,2) for x,y,z (sc. planes yz, xz, xy)
   :param ∈{-1,0,1} sense: sense in which to interact (0: both, -1: negative, +1: positive; see :yref:`Wall`)

   See :yref:`yade.utils.sphere`'s documentation for meaning of other parameters."""
   b=Body()
   b.shape=Wall(sense=sense,axis=axis,color=color if color else randomColor())
   if isinstance(position,(int,long,float)):
      pos2=Vector3(0,0,0); pos2[axis]=position
   else: pos2=position
   _commonBodySetup(b,0,Vector3(0,0,0),material,pos=pos2,fixed=True)
   b.aspherical=False # wall never moves dynamically
   b.mask=mask
   return b

def facet(vertices,dynamic=None,fixed=True,wire=True,color=None,highlight=False,noBound=False,material=-1,mask=1):
   """Create facet with given parameters.

   :param [Vector3,Vector3,Vector3] vertices: coordinates of vertices in the global coordinate system.
   :param bool wire: if ``True``, facets are shown as skeleton; otherwise facets are filled
   :param bool noBound: set :yref:`Body.bounded`
   :param Vector3-or-None color: color of the facet; random color will be assigned if ``None``.

   See :yref:`yade.utils.sphere`'s documentation for meaning of other parameters."""
   b=Body()
   center=inscribedCircleCenter(vertices[0],vertices[1],vertices[2])
   vertices=Vector3(vertices[0])-center,Vector3(vertices[1])-center,Vector3(vertices[2])-center
   b.shape=Facet(color=color if color else randomColor(),wire=wire,highlight=highlight,vertices=vertices)
   _commonBodySetup(b,0,Vector3(0,0,0),material,noBound=noBound,pos=center,fixed=fixed)
   b.aspherical=False # mass and inertia are 0 anyway; fell free to change to ``True`` if needed
   b.mask=mask
   return b
   
def facetBox(*args,**kw):
   "|ydeprecated|"
   _deprecatedUtilsFunction('facetBox','geom.facetBox')
   return geom.facetBox(*args,**kw)

def facetCylinder(*args,**kw):
   "|ydeprecated|"
   _deprecatedUtilsFunction('facetCylinder','geom.facetCylinder')
   return geom.facetCylinder(*args,**kw)
   
def aabbWalls(extrema=None,thickness=None,oversizeFactor=1.5,**kw):
   """Return 6 boxes that will wrap existing packing as walls from all sides;
   extrema are extremal points of the Aabb of the packing (will be calculated if not specified)
   thickness is wall thickness (will be 1/10 of the X-dimension if not specified)
   Walls will be enlarged in their plane by oversizeFactor.
   returns list of 6 wall Bodies enclosing the packing, in the order minX,maxX,minY,maxY,minZ,maxZ.
   """
   walls=[]
   if not extrema: extrema=aabbExtrema()
   if not thickness: thickness=(extrema[1][0]-extrema[0][0])/10.
   for axis in [0,1,2]:
      mi,ma=extrema
      center=[(mi[i]+ma[i])/2. for i in range(3)]
      extents=[.5*oversizeFactor*(ma[i]-mi[i]) for i in range(3)]
      extents[axis]=thickness/2.
      for j in [0,1]:
         center[axis]=extrema[j][axis]+(j-.5)*thickness
         walls.append(box(center=center,extents=extents,fixed=True,**kw))
         walls[-1].shape.wire=True
   return walls


def aabbDim(cutoff=0.,centers=False):
   """Return dimensions of the axis-aligned bounding box, optionally with relative part *cutoff* cut away."""
   a=aabbExtrema(cutoff,centers)
   return (a[1][0]-a[0][0],a[1][1]-a[0][1],a[1][2]-a[0][2])

def aabbExtrema2d(pts):
   """Return 2d bounding box for a sequence of 2-tuples."""
   inf=float('inf')
   min,max=[inf,inf],[-inf,-inf]
   for pt in pts:
      if pt[0]<min[0]: min[0]=pt[0]
      elif pt[0]>max[0]: max[0]=pt[0]
      if pt[1]<min[1]: min[1]=pt[1]
      elif pt[1]>max[1]: max[1]=pt[1]
   return tuple(min),tuple(max)

def perpendicularArea(axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
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   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n">axis):
   """Return area perpendicular to given axis (0=x,1=y,2=z) generated by bodies
   for which the function consider returns True (defaults to return="o"an class="n"