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72 lines
2.2 KiB
72 lines
2.2 KiB
2 years ago
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#!/usr/bin/env python
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# Create a constrained Delaunay triangulation following fault lines. The
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# fault lines serve as constraint edges in the Delaunay triangulation.
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import vtk
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from vtk.util.misc import vtkGetDataRoot
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from vtk.util.colors import *
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VTK_DATA_ROOT = vtkGetDataRoot()
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# Generate some points by reading a VTK data file. The data file also
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# has edges that represent constraint lines. This is originally from a
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# geologic horizon.
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reader = vtk.vtkPolyDataReader()
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reader.SetFileName(VTK_DATA_ROOT + "/Data/faults.vtk")
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# Perform a 2D triangulation with constraint edges.
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delny = vtk.vtkDelaunay2D()
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delny.SetInputConnection(reader.GetOutputPort())
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delny.SetSourceConnection(reader.GetOutputPort())
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delny.SetTolerance(0.00001)
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normals = vtk.vtkPolyDataNormals()
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normals.SetInputConnection(delny.GetOutputPort())
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mapMesh = vtk.vtkPolyDataMapper()
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mapMesh.SetInputConnection(normals.GetOutputPort())
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meshActor = vtk.vtkActor()
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meshActor.SetMapper(mapMesh)
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meshActor.GetProperty().SetColor(beige)
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# Now pretty up the mesh with tubed edges and balls at the vertices.
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tuber = vtk.vtkTubeFilter()
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tuber.SetInputConnection(reader.GetOutputPort())
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tuber.SetRadius(25)
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mapLines = vtk.vtkPolyDataMapper()
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mapLines.SetInputConnection(tuber.GetOutputPort())
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linesActor = vtk.vtkActor()
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linesActor.SetMapper(mapLines)
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linesActor.GetProperty().SetColor(1, 0, 0)
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linesActor.GetProperty().SetColor(tomato)
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# Create graphics objects
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# Create the rendering window, renderer, and interactive renderer
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ren = vtk.vtkRenderer()
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renWin = vtk.vtkRenderWindow()
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renWin.AddRenderer(ren)
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iren = vtk.vtkRenderWindowInteractor()
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iren.SetRenderWindow(renWin)
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# Add the actors to the renderer, set the background and size
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ren.AddActor(linesActor)
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ren.AddActor(meshActor)
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ren.SetBackground(1, 1, 1)
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renWin.SetSize(350, 250)
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cam1 = vtk.vtkCamera()
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cam1.SetClippingRange(2580, 129041)
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cam1.SetFocalPoint(461550, 6.58e+006, 2132)
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cam1.SetPosition(463960, 6.559e+06, 16982)
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cam1.SetViewUp(-0.321899, 0.522244, 0.78971)
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light = vtk.vtkLight()
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light.SetPosition(0, 0, 1)
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light.SetFocalPoint(0, 0, 0)
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ren.SetActiveCamera(cam1)
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ren.AddLight(light)
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ren.GetActiveCamera().Zoom(1.5)
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iren.LightFollowCameraOff()
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iren.Initialize()
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renWin.Render()
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iren.Start()
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