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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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from mapper import DataSetMapper |
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from lookuptable import LookupTable |
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from actor import Actor3D |
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from constant import Viewport, Color, Lut, WarpMode, ColorMode |
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from warp import Warp |
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from outline import Outline |
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from transform import Transform |
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from plane import Plane |
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from cutter import Cutter |
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from average import CellDataToPointData |
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|
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# NOTE: DataSetMapper, Actor3D, Warp, Transform, Plane and Cutter were |
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# inherited to allow access to their public methods from the driver. |
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class Carpet(DataSetMapper, Actor3D, Warp, Transform, Plane, Cutter): |
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""" |
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Class that shows a scalar field on a plane deformated along the normal. |
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""" |
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|
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# The SOUTH_WEST default viewport is used when there is only one viewport. |
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# This saves the user from specifying the viewport when there is only one. |
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# If no warp_mode is specified, the data will be deformated using scalar |
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# data. If no lut is specified, the color scheme will be used. |
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def __init__(self, scene, data_collector, viewport = Viewport.SOUTH_WEST, |
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warp_mode = WarpMode.SCALAR, lut = Lut.COLOR, |
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cell_to_point = False, outline = True): |
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""" |
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Initialise the Carpet. |
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|
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@attention: The source can either be point or cell data. If the |
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source is cell data, a conversion to point data may or may not be |
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required, in order for the object to be rendered correctly. |
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If a conversion is needed, the 'cell_to_point' flag must be set to |
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'True', otherwise 'False' (which is the default). |
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|
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@type scene: L{Scene <scene.Scene>} object |
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@param scene: Scene in which objects are to be rendered on |
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@type data_collector: L{DataCollector <datacollector.DataCollector>} |
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object |
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@param data_collector: Deal with source of data for visualisation |
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@type viewport: L{Viewport <constant.Viewport>} constant |
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@param viewport: Viewport in which objects are to be rendered on |
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@param warp_mode: L{WarpMode <constant.WarpMode>} constant |
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@type warp_mode: Mode in which to deform the scalar field |
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@type lut : L{Lut <constant.Lut>} constant |
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@param lut: Lookup table color scheme |
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@type cell_to_point: Boolean |
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@param cell_to_point: Converts cell data to point data (by averaging) |
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@type outline: Boolean |
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@param outline: Places an outline around the domain surface |
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""" |
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|
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self.__data_collector = data_collector |
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self.__viewport = viewport |
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self.__warp_mode = warp_mode |
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self.__lut = lut |
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self.__cell_to_point = cell_to_point |
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self.__outline = outline |
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|
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# Keeps track whether Carpet has been modified. |
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self.__modified = True |
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Transform.__init__(self) |
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Plane.__init__(self) |
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Cutter.__init__(self) |
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Warp.__init__(self, self.__warp_mode) |
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DataSetMapper.__init__(self) |
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Actor3D.__init__(self) |
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scene._addVisualizationModules(self) |
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|
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# ----- Outline ----- |
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|
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# NOTE: Changes cannot be made to the Outline's properties from the |
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# driver. |
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if(self.__outline == True): |
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outline = Outline(self.__data_collector._getDataCollectorOutput()) |
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mapper = DataSetMapper() |
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mapper._setupDataSetMapper(outline._getOutlineOutput()) |
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|
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actor3D = Actor3D() |
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actor3D._setupActor3D(mapper._getDataSetMapper()) |
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# Default outline color is black. |
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actor3D.setColor(Color.BLACK) |
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|
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# Default line width is 1. |
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actor3D._setLineWidth(1) |
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scene._addActor3D(self.__viewport, actor3D._getActor3D()) |
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|
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# ----- Carpet ----- |
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|
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# NOTE: Lookup table color mapping (color or grey scale) MUST be set |
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# before DataSetMapper. If it is done after DataSetMapper, no effect |
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# will take place. |
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if(self.__lut == Lut.COLOR): # Colored lookup table. |
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lookup_table = LookupTable() |
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lookup_table._setTableValue() |
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elif(self.__lut == Lut.GREY_SCALE): # Grey scaled lookup table. |
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lookup_table = LookupTable() |
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lookup_table._setLookupTableToGreyScale() |
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|
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self._setupPlane(self._getTransform()) |
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|
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if(self.__cell_to_point == True): # Converts cell data to point data. |
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c2p = CellDataToPointData(\ |
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self.__data_collector._getDataCollectorOutput()) |
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self._setupCutter(c2p._getCellToPointOutput(), self._getPlane()) |
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elif(self.__cell_to_point == False): # No conversion happens. |
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self._setupCutter(self.__data_collector._getDataCollectorOutput(), |
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self._getPlane()) |
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|
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self._setupWarp(self._getCutterOutput()) |
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self._setupDataSetMapper(self._getWarpOutput(), |
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lookup_table._getLookupTable()) |
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|
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self._setupActor3D(self._getDataSetMapper()) |
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scene._addActor3D(self.__viewport, self._getActor3D()) |
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|
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def _isModified(self): |
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""" |
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Return whether the Carpet or DataCollector has been modified. |
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|
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@rtype: Boolean |
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@return: True or False |
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""" |
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|
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return self.__modified or self.__data_collector._isModified() |
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|
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def _render(self, scene): |
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""" |
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Render the carpet. |
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|
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@type scene: L{Scene <scene.Scene>} object |
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@param scene: Scene in which objects are to be rendered on |
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""" |
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|
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if (self._isModified() == True): |
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if(self.__data_collector._isScalarSet() == True): |
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self.__data_collector._setActiveScalar() |
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self._setScalarRange(self.__data_collector._getScalarRange()) |
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self.__modified = False |
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|
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