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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 actor import Actor2D |
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from constant import Viewport, Color |
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|
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# NOTE: Actor2D was inherited to allow access to its public methods from |
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# the driver. |
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class Text2D(Actor2D): |
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""" |
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Class that defines a 2D text actor. A two-dimensional text is used to |
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annotate the rendered object (i.e. inserting titles, authors and labels). |
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""" |
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|
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def __init__(self, scene, text, viewport = Viewport.SOUTH_WEST): |
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""" |
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Initialise the 2D text actor. |
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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 text: String |
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@param text: 2D text to be displayed |
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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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""" |
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|
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self.__text = text |
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self.__viewport = viewport |
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self._vtk_actor2D = vtk.vtkTextActor() |
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|
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self.__setupText2D(scene) |
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|
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def __setupText2D(self, scene): |
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""" |
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Setup the 2D text. |
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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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self.__setInput() |
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self.setColor(Color.BLACK) |
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# Add the 2D text to the appropriate renderer. |
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scene._addActor2D(self.__viewport, self._vtk_actor2D) |
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|
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def __setInput(self): |
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""" |
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Set the input for the 2D text. |
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""" |
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|
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self._vtk_actor2D.SetInput(self.__text) |
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|
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def setFontSize(self, size): |
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""" |
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Set the 2D text size. |
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|
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@type size: Number |
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@param size: Size of the 2D text |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().SetFontSize(size) |
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|
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def setFontToTimes(self): |
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""" |
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Set the 2D text font type to Times New Roman. |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().SetFontFamilyToTimes() |
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|
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def setFontToArial(self): |
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""" |
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Set the 2D text font type to Arial. |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().SetFontFamilyToArial() |
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|
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def setFontToCourier(self): |
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""" |
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Set the 2D text front type to Courier. |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().SetFontFamilyToCourier() |
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|
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def boldOn(self): |
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""" |
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Bold the 2D text. |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().BoldOn() |
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|
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def shadowOn(self): |
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""" |
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Apply shadow onto the 2D text to ease visibility. |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().ShadowOn() |
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|
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def setColor(self, color): |
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""" |
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Set the color of the 2D text. |
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|
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@type color: L{Color <constant.Color>} constant |
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@param color: 2D text color |
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""" |
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|
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self._vtk_actor2D.GetTextProperty().SetColor(color) |
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|
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