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######################################################## |
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# |
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# Copyright (c) 2003-2010 by University of Queensland |
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# Earth Systems Science Computational Center (ESSCC) |
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# http://www.uq.edu.au/esscc |
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# |
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# Primary Business: Queensland, Australia |
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# Licensed under the Open Software License version 3.0 |
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# http://www.opensource.org/licenses/osl-3.0.php |
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# |
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######################################################## |
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__copyright__="""Copyright (c) 2003-2010 by University of Queensland |
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Earth Systems Science Computational Center (ESSCC) |
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http://www.uq.edu.au/esscc |
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Primary Business: Queensland, Australia""" |
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__license__="""Licensed under the Open Software License version 3.0 |
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http://www.opensource.org/licenses/osl-3.0.php""" |
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__url__="https://launchpad.net/escript-finley" |
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|
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""" |
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:var __author__: name of author |
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:var __copyright__: copyrights |
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:var __license__: licence agreement |
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:var __url__: url entry point on documentation |
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:var __version__: version |
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:var __date__: date of the version |
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""" |
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|
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__author__="John Ngui, john.ngui@uq.edu.au" |
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from esys.escript import getMPISizeWorld |
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if getMPISizeWorld()==1: import vtk |
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|
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class Clipper: |
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""" |
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Class that defines a clipper. |
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""" |
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|
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def __init__(self): |
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""" |
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Initialise the clipper. |
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""" |
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if getMPISizeWorld()>1: |
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raise ValueError,"pyvisi.Clipper is not running on more than one processor" |
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self.__vtk_clipper = vtk.vtkClipDataSet() |
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|
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def _setupClipper(self, object, plane): |
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""" |
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Setup the clipper. |
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|
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:type object: vtkUnstructuredGrid, etc |
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:param object: Input for the clipper |
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:type plane: vtkPlane |
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:param plane: Plane to clip the object |
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""" |
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|
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self.__object = object |
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# True only if a plane is used to perform clipping. False for |
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# scalar clipping. |
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if(plane != None): |
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self.__plane = plane |
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|
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self.__setInput() |
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# Due to this it's not possible to setInsideOutOff() when used with Rotation |
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# self.setInsideOutOn() |
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|
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def __setInput(self): |
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""" |
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Set the input for the clipper. |
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""" |
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|
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self.__vtk_clipper.SetInput(self.__object) |
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|
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def _setClipFunction(self): |
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""" |
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Set the clip function (using a plane) for the clipper. |
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""" |
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|
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self.__vtk_clipper.SetClipFunction(self.__plane) |
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|
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def setInsideOutOn(self): |
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""" |
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Clip one side of the rendered object. |
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""" |
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|
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self.__vtk_clipper.InsideOutOn() |
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|
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def setInsideOutOff(self): |
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""" |
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Clips the other side of the rendered object. |
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""" |
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|
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self.__vtk_clipper.InsideOutOff() |
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|
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def setClipValue(self, value): |
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""" |
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Set the scalar clip value (intead of using a plane) for the clipper. |
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:type value: Number |
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:param value: Scalar clip value |
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""" |
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self.__vtk_clipper.SetValue(value) |
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def _getClipperOutput(self): |
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""" |
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Return the output of the clipper. |
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|
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:rtype: vtkUnstructuredGrid |
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:return: Unstructured grid |
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""" |
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return self.__vtk_clipper.GetOutput() |
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