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""" |
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@author: John Ngui |
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@author: Lutz Gross |
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""" |
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|
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import vtk |
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from constants import * |
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|
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class Scene: |
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""" |
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Class that defines a scene in which components are displayed. |
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""" |
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|
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def __init__(self, renderer, x_size = 800, y_size = 600): |
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""" |
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Initialize all the instance variables. |
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|
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|
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@type renderer: String |
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@param renderer: Type of rendering (I{vtk-online or vtk-offline}) |
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@type x_size: Number |
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@param x_size: Size of the rendering window on the x-axis |
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@type y_size: Number |
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@param y_size: Size of the rendering window on the y-axis |
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""" |
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|
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self.renderer = renderer |
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self.x_size = x_size |
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self.y_size = y_size |
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self.vtk_renderer = vtk.vtkRenderer() |
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self.vtk_render_window = vtk.vtkRenderWindow() |
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|
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self.setRenderWindow() |
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|
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def saveImage(self, image_name): |
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self.vtk_render_window.Render() |
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|
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vtk_window_to_image = vtk.vtkWindowToImageFilter() |
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vtk_window_to_image.SetInput(self.vtk_render_window) |
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vtk_window_to_image.Update() |
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|
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vtk_image_writer = self.getImageWriter(self.renderer) |
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vtk_image_writer.SetInput(vtk_window_to_image.GetOutput()) |
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vtk_image_writer.SetFileName(image_name) |
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vtk_image_writer.Write() |
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|
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|
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def setRenderWindow(self): |
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""" |
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Set up the renderer and rendering window. |
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""" |
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|
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self.vtk_render_window.AddRenderer(self.vtk_renderer) |
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self.vtk_render_window.SetSize(self.x_size, self.y_size) |
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self.vtk_renderer.SetBackground( |
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WHITE[0], WHITE[1], WHITE[2]) |
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|
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def render(self): |
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""" |
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Set up the render window interactor and render the image. |
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""" |
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|
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vtk_render_window_interactor = vtk.vtkRenderWindowInteractor() |
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vtk_render_window_interactor.SetRenderWindow(self.vtk_render_window) |
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vtk_render_window_interactor.Initialize() |
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self.vtk_render_window.Render() |
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vtk_render_window_interactor.Start() |
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|
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|
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def getImageWriter(self, renderer): |
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if(renderer == "vtk_jpeg"): |
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return vtk.vtkJPEGWriter() |
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elif(renderer == "vtk_bmp"): |
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return vtk.vtkBMPWriter() |
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elif(renderer == "vtk_pnm"): |
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return vtk.vtkPNMWriter() |
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elif(renderer == "vtk_png"): |
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return vtk.vtkPNGWriter() |
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elif(renderer == "vtk_tiff"): |
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return vtk.vtkTIFFWriter() |
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elif(renderer == "vtk_ps"): |
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return vtk.vtkPostScriptWriter() |
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|
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def getRenderer(self): |
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""" |
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Return the renderer. |
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|
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@rtype: vtkRenderer |
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@return: VTK renderer |
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""" |
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|
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return self.vtk_renderer |
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