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""" |
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@author: John NGUI |
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""" |
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|
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import vtk |
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|
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class DataSetMapper: |
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""" |
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Class that defines a data set mapper. |
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""" |
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|
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# 'lookup_table = None' is used only by the outline. |
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def __init__(self, object, lookup_table = None): |
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""" |
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Initialise the data set mapper. |
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|
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@type object: vtkDataSet (i.e. vtkUnstructuredGrid, vtkPolyData, etc) |
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@param object: Data source map |
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@type lookup_table: vtkLookupTable |
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@param lookup_table: Maps scalar values to colors |
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""" |
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|
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self.__object = object |
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self.__vtk_data_set_mapper = vtk.vtkDataSetMapper() |
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self.__setInput() |
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|
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if(lookup_table != None): # False for the outline. |
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self.__setLookupTable(lookup_table) |
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|
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def __setInput(self): |
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""" |
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Set the input for the data set mapper. |
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""" |
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|
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self.__vtk_data_set_mapper.SetInput(self.__object) |
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|
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def __setLookupTable(self, lookup_table): |
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""" |
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Set the lookup table for the data set mapper. |
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|
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@type lookup_table: vtkLookupTable |
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@param lookup_table: Map scalar values to colors |
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""" |
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|
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self.__vtk_data_set_mapper.SetLookupTable(lookup_table) |
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|
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def _setScalarRange(self, range): |
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""" |
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Set the minimum and maximum scalar range for the data set mapper. |
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|
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@type range: Two column tuple containing numbers |
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@param range: Minimum and maximum data set mapper scalar range |
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""" |
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|
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self.__vtk_data_set_mapper.SetScalarRange(range) |
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|
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def _setScalarVisibilityOn(self): |
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""" |
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Scalar data is used to color the rendered object. |
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""" |
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|
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self.__vtk_data_set_mapper.ScalarVisibilityOn() |
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|
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def _getDataSetMapper(self): |
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""" |
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Return the data set mapper. |
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|
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@rtype: vtkDataSetMapper |
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@return: Data set mapper |
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""" |
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|
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return self.__vtk_data_set_mapper |
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|
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|
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############################################################################### |
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|
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|
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class ImageMapper: |
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""" |
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Class that defines a image mapper. |
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""" |
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|
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def __init__(self, object): |
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""" |
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Initialise the image mapper. |
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|
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@type object: vtkImageData |
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@param object: Image data |
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""" |
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|
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self.__object = object |
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self.__vtk_image_mapper = vtk.vtkImageMapper() |
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|
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self.__setupImageMapper() |
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|
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def __setupImageMapper(self): |
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""" |
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Setup the image mapper. |
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""" |
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|
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self.__setInput() |
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# Both color window and color level needs to be set, otherwise only |
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# a black image will be produced. Both values were obtained from |
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# an example found on the VTK site. |
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self.__setColorWindow(255) |
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self.__setColorLevel(127.5) |
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|
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def __setInput(self): |
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""" |
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Set the input for the image mapper. |
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""" |
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|
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self.__vtk_image_mapper.SetInput(self.__object) |
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|
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def __setColorWindow(self, color): |
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""" |
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Set the color of the window. |
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""" |
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|
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self.__vtk_image_mapper.SetColorWindow(color) |
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|
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def __setColorLevel(self, color): |
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""" |
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Set the color level of the window. |
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""" |
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|
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self.__vtk_image_mapper.SetColorLevel(color) |
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|
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def _getImageMapper(self): |
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""" |
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Return the image mapper. |
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|
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@rtype: vtkImageMapper |
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@return: Image mapper |
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""" |
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|
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return self.__vtk_image_mapper |
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