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#############################################################
## ##
## Copyright (c) 2003-2017 by The University of Queensland ##
## Centre for Geoscience Computing ##
## http://earth.uq.edu.au/centre-geoscience-computing ##
## ##
## Primary Business: Brisbane, Queensland, Australia ##
## Licensed under the Open Software License version 3.0 ##
## http://www.apache.org/licenses/LICENSE-2.0 ##
## ##
#############################################################
"""Defines the L{Cylinder} and L{Disk} base classes"""
from __future__ import division
from .exception import raiseNotImplemented
from esys.lsm.util import Vec3
class Cylinder(object):
"""
Objects of this class represent cylinders.
"""
def __init__(self, endPt1, endPt2, radius):
"""
Initialises cylinder with center-end-point coordinates and radius.
@type endPt1: sequence of 3 floats
@param endPt1: Center coordinate of one end.
@type endPt2: sequence of 3 floats
@param endPt2: Center coordinate of other end.
@type radius: float
@param radius: Radius of cylinder.
"""
self.endPt1 = tuple(endPt1)
self.endPt2 = tuple(endPt2)
self.radius = radius
def getEndPt1(self):
"""
Returns the coordinate of the center coordinate of end 1.
@return: Center coordinate of end 1.
"""
return self.endPt1
def getEndPt2(self):
"""
Returns the coordinate of the center coordinate of end 2.
@return: Center coordinate of end 2.
"""
return self.endPt2
def getCenter(self):
"""
Returns the coordinate of the center of this cylinder.
@return: Center coordinate of this cylinder.
"""
return (Vec3(self.getEndPt1()) + Vec3(self.getEndPt2()))*0.5
def getHeight(self):
"""
Returns the height of this cylinder.
@rtype: float
@return: Center coordinate of this cylinder.
"""
return (Vec3(self.getEndPt1()) - Vec3(self.getEndPt2())).norm()
def getRadius(self):
"""
Returns the radius of this cylinder.
@return: Radius of this cylinder.
"""
return self.radius
class Disk(Cylinder):
"""
Objects of this class represent cylinders.
"""
def __init__(self, center, radius, height, direction=None):
if (direction == None):
direction = core.Vec3(0,0,1)
direction = core.Vec3(direction)
nrm = direction.norm()
if (nrm == 0.0):
direction = core.Vec3(0,0,1)
nrm = 1.0
center = core.Vec3(centre)
direction = direction/nrm
Cylinder.__init__(
self,
endPt1 = center - (direction*(height*0.5)),
endPt2 = center + (direction*(height*0.5)),
radius = radius
)
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