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#############################################################
## ##
## Copyright (c) 2003-2011 by The University of Queensland ##
## Earth Systems Science Computational Centre (ESSCC) ##
## http://www.uq.edu.au/esscc ##
## ##
## Primary Business: Brisbane, Queensland, Australia ##
## Licensed under the Open Software License version 3.0 ##
## http://www.opensource.org/licenses/osl-3.0.php ##
## ##
#############################################################
"""Defines the L{TruncatedCone} and L{Cone} base classes"""
from Exception import raiseNotImplemented
from esys.lsm.util import Vec3
class TruncatedCone(object):
"""
Objects of this class represent truncated cones.
"""
def __init__(self, endPt1, endPt2, radius1, radius2=0):
"""
Initialises cone with center-end-point coordinates and
corresponding radii.
@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 radius1: float
@param radius1: End 1 radius.
@type radius2: float
@param radius2: End 2 radius.
"""
self.endPt1 = tuple(endPt1)
self.endPt2 = tuple(endPt2)
self.radius1 = radius1
self.radius2 = radius2
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 cone.
@return: Center coordinate of this cone.
"""
return (Vec3(self.getEndPt1()) + Vec3(self.getEndPt2()))*0.5
def getHeight(self):
"""
Returns the height of this cone.
@rtype: float
@return: Center coordinate of this cone.
"""
return (Vec3(self.getEndPt1()) - Vec3(self.getEndPt2())).norm()
def getRadius1(self):
"""
Returns the end 1 radius of this cone.
@return: End 1 radius.
"""
return self.radius1
def getRadius2(self):
"""
Returns the end 2 radius of this cone.
@return: End 2 radius.
"""
return self.radius2
class Cone(TruncatedCone):
"""
Objects of this class represent cones.
"""
def __init__(self, basePt, tipPt, radius):
"""
Initialises cone with center-end-point coordinates and
corresponding radii.
@type basePt: sequence of 3 floats
@param basePt: Center coordinate of one end.
@type tipPt: sequence of 3 floats
@param tipPt: Center coordinate of other end.
@type radius: float
@param radius: Radius at C{basePt}.
"""
TruncatedCone.__init__(self, basePt, tipPt, radius, 0)
def getBasePt(self):
return self.getEndPt1()
def getTipPt(self):
return self.getEndPt2()
def getRadius(self):
return self.getRadius1()
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