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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,127 @@ | ||
| #!/usr/bin/env python | ||
| # -*- coding: utf-8 -*- | ||
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| import vtk | ||
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| def main(): | ||
| colors = vtk.vtkNamedColors() | ||
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| planes = list() | ||
| titles = list() | ||
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| # Using frustum planes. | ||
| titles.append('Using frustum planes') | ||
| camera = vtk.vtkCamera() | ||
| planesArray = [0] * 24 | ||
| camera.GetFrustumPlanes(1, planesArray) | ||
| planes.append(vtk.vtkPlanes()) | ||
| planes[0].SetFrustumPlanes(planesArray) | ||
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| # Using bounds. | ||
| titles.append('Using bounds') | ||
| sphereSource = vtk.vtkSphereSource() | ||
| sphereSource.Update() | ||
| bounds = [0] * 6 | ||
| sphereSource.GetOutput().GetBounds(bounds) | ||
| planes.append(vtk.vtkPlanes()) | ||
| planes[1].SetBounds(bounds) | ||
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| # At this point we have the planes created by both of the methods above. | ||
| # You can do whatever you want with them. | ||
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| # For visualisation we will produce an n-sided convex hull | ||
| # and visualise it. | ||
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| # Create a common text property. | ||
| textProperty = vtk.vtkTextProperty() | ||
| textProperty.SetFontSize(16) | ||
| textProperty.SetJustificationToCentered() | ||
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| renWin = vtk.vtkRenderWindow() | ||
| renWin.SetSize(600, 600) | ||
| renWin.SetWindowName("Planes") | ||
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| iRen = vtk.vtkRenderWindowInteractor() | ||
| iRen.SetRenderWindow(renWin) | ||
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| hulls = list() | ||
| pds = list() | ||
| mappers = list() | ||
| actors = list() | ||
| renderers = list() | ||
| textMappers = list() | ||
| textActors = list() | ||
| for i in range(0, len(planes)): | ||
| hulls.append(vtk.vtkHull()) | ||
| hulls[i].SetPlanes(planes[i]) | ||
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| pds.append(vtk.vtkPolyData()) | ||
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| # To generate the convex hull we supply a vtkPolyData object and a bounding box. | ||
| # We define the bounding box to be where we expect the resulting polyhedron to lie. | ||
| # Make it a generous fit as it is only used to create the initial | ||
| # polygons that are eventually clipped. | ||
| hulls[i].GenerateHull(pds[i], -200, 200, -200, 200, -200, 200) | ||
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| mappers.append(vtk.vtkPolyDataMapper()) | ||
| mappers[i].SetInputData(pds[i]) | ||
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| actors.append(vtk.vtkActor()) | ||
| actors[i].SetMapper(mappers[i]) | ||
| actors[i].GetProperty().SetColor(colors.GetColor3d("Moccasin")) | ||
| actors[i].GetProperty().SetSpecular(0.8) | ||
| actors[i].GetProperty().SetSpecularPower(30) | ||
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| renderers.append(vtk.vtkRenderer()) | ||
| renderers[i].AddActor(actors[i]) | ||
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| textMappers.append(vtk.vtkTextMapper()) | ||
| textMappers[i].SetInput(titles[i]) | ||
| textMappers[i].SetTextProperty(textProperty) | ||
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| textActors.append(vtk.vtkActor2D()) | ||
| textActors[i].SetMapper(textMappers[i]) | ||
| textActors[i].SetPosition(100, 10) | ||
| renderers[i].AddViewProp(textActors[i]) | ||
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| renWin.AddRenderer(renderers[i]) | ||
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| # Setup the viewports | ||
| xGridDimensions = 2 | ||
| yGridDimensions = 1 | ||
| rendererSize = 300 | ||
| renWin.SetSize(rendererSize * xGridDimensions, rendererSize * yGridDimensions) | ||
| for row in range(0, yGridDimensions): | ||
| for col in range(0, xGridDimensions): | ||
| index = row * xGridDimensions + col | ||
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| # (xmin, ymin, xmax, ymax) | ||
| viewport = [float(col) / xGridDimensions, | ||
| float(yGridDimensions - (row + 1)) / yGridDimensions, | ||
| float(col + 1) / xGridDimensions, | ||
| float(yGridDimensions - row) / yGridDimensions] | ||
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| if index > (len(actors) - 1): | ||
| # Add a renderer even if there is no actor. | ||
| # This makes the render window background all the same color. | ||
| ren = vtk.vtkRenderer() | ||
| ren.SetBackground(colors.GetColor3d("DarkSlateGray")) | ||
| ren.SetViewport(viewport) | ||
| renWin.AddRenderer(ren) | ||
| continue | ||
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| renderers[index].SetViewport(viewport) | ||
| renderers[index].SetBackground(colors.GetColor3d("DarkSlateGray")) | ||
| renderers[index].ResetCamera() | ||
| renderers[index].GetActiveCamera().Azimuth(30) | ||
| renderers[index].GetActiveCamera().Elevation(-30) | ||
| renderers[index].ResetCameraClippingRange() | ||
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| iRen.Initialize() | ||
| renWin.Render() | ||
| iRen.Start() | ||
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| if __name__ == '__main__': | ||
| main() |