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96 lines
2.8 KiB
96 lines
2.8 KiB
2 years ago
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# This example demonstrates how to use 2D Delaunay triangulation.
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# We create a fancy image of a 2D Delaunay triangulation. Points are
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# randomly generated.
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# first we load in the standard vtk packages into tcl
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package require vtk
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package require vtkinteraction
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package require vtktesting
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# Generate some random points
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#
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vtkMath math
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vtkPoints points
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for {set i 0} {$i<50} {incr i 1} {
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eval points InsertPoint $i [math Random 0 1] [math Random 0 1] 0.0
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}
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# Create a polydata with the points we just created.
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vtkPolyData profile
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profile SetPoints points
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# Perform a 2D Delaunay triangulation on them.
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#
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vtkDelaunay2D del
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del SetInput profile
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del SetTolerance 0.001
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vtkPolyDataMapper mapMesh
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mapMesh SetInputConnection [del GetOutputPort]
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vtkActor meshActor
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meshActor SetMapper mapMesh
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eval [meshActor GetProperty] SetColor .1 .2 .4
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# We will now create a nice looking mesh by wrapping the edges in tubes,
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# and putting fat spheres at the points.
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vtkExtractEdges extract
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extract SetInputConnection [del GetOutputPort]
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vtkTubeFilter tubes
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tubes SetInputConnection [extract GetOutputPort]
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tubes SetRadius 0.01
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tubes SetNumberOfSides 6
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vtkPolyDataMapper mapEdges
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mapEdges SetInputConnection [tubes GetOutputPort]
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vtkActor edgeActor
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edgeActor SetMapper mapEdges
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eval [edgeActor GetProperty] SetColor $peacock
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[edgeActor GetProperty] SetSpecularColor 1 1 1
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[edgeActor GetProperty] SetSpecular 0.3
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[edgeActor GetProperty] SetSpecularPower 20
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[edgeActor GetProperty] SetAmbient 0.2
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[edgeActor GetProperty] SetDiffuse 0.8
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vtkSphereSource ball
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ball SetRadius 0.025
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ball SetThetaResolution 12
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ball SetPhiResolution 12
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vtkGlyph3D balls
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balls SetInputConnection [del GetOutputPort]
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balls SetSourceConnection [ball GetOutputPort]
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vtkPolyDataMapper mapBalls
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mapBalls SetInputConnection [balls GetOutputPort]
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vtkActor ballActor
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ballActor SetMapper mapBalls
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eval [ballActor GetProperty] SetColor $hot_pink
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[ballActor GetProperty] SetSpecularColor 1 1 1
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[ballActor GetProperty] SetSpecular 0.3
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[ballActor GetProperty] SetSpecularPower 20
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[ballActor GetProperty] SetAmbient 0.2
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[ballActor GetProperty] SetDiffuse 0.8
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# Create graphics objects
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# Create the rendering window, renderer, and interactive renderer
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vtkRenderer ren1
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vtkRenderWindow renWin
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renWin AddRenderer ren1
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vtkRenderWindowInteractor iren
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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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ren1 AddActor ballActor
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ren1 AddActor edgeActor
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ren1 SetBackground 1 1 1
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renWin SetSize 150 150
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# render the image
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#
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iren AddObserver UserEvent {wm deiconify .vtkInteract}
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ren1 ResetCamera
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[ren1 GetActiveCamera] Zoom 1.5
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iren Initialize
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# prevent the tk window from showing up then start the event loop
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wm withdraw .
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