/usr/share/vtk/Rendering/Tcl/CSpline.tcl is in vtk-examples 5.8.0-17.5.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | # This example demonstrates the use of vtkCardinalSpline.
# It creates random points and connects them with a spline
#
# First we include the VTK Tcl packages which will make available
# all of the vtk commands to Tcl
#
package require vtk
package require vtkinteraction
package require vtktesting
# This will be used later to get random numbers.
vtkMath math
# Total number of points.
set numberOfInputPoints 10
# One spline for each direction.
vtkCardinalSpline aSplineX
vtkCardinalSpline aSplineY
vtkCardinalSpline aSplineZ
# Generate random (pivot) points and add the corresponding
# coordinates to the splines.
# aSplineX will interpolate the x values of the points
# aSplineY will interpolate the y values of the points
# aSplineZ will interpolate the z values of the points
vtkPoints inputPoints
for {set i 0} {$i < $numberOfInputPoints} {incr i 1} {
set x [math Random 0 1]
set y [math Random 0 1]
set z [math Random 0 1]
aSplineX AddPoint $i $x
aSplineY AddPoint $i $y
aSplineZ AddPoint $i $z
inputPoints InsertPoint $i $x $y $z
}
# The following section will create glyphs for the pivot points
# in order to make the effect of the spline more clear.
# Create a polydata to be glyphed.
vtkPolyData inputData
inputData SetPoints inputPoints
# Use sphere as glyph source.
vtkSphereSource balls
balls SetRadius .01
balls SetPhiResolution 10
balls SetThetaResolution 10
vtkGlyph3D glyphPoints
glyphPoints SetInput inputData
glyphPoints SetSource [balls GetOutput]
vtkPolyDataMapper glyphMapper
glyphMapper SetInputConnection [glyphPoints GetOutputPort]
vtkActor glyph
glyph SetMapper glyphMapper
eval [glyph GetProperty] SetDiffuseColor $tomato
[glyph GetProperty] SetSpecular .3
[glyph GetProperty] SetSpecularPower 30
# Generate the polyline for the spline.
vtkPoints points
vtkPolyData profileData
# Number of points on the spline
set numberOfOutputPoints 400
# Interpolate x, y and z by using the three spline filters and
# create new points
for {set i 0} {$i< $numberOfOutputPoints} {incr i 1} {
set t [expr ( $numberOfInputPoints - 1.0 ) / ( $numberOfOutputPoints - 1.0 ) * $i]
points InsertPoint $i [aSplineX Evaluate $t] [aSplineY Evaluate $t] [aSplineZ Evaluate $t]
}
# Create the polyline.
vtkCellArray lines
lines InsertNextCell $numberOfOutputPoints
for {set i 0} {$i < $numberOfOutputPoints} {incr i 1} {
lines InsertCellPoint $i
}
profileData SetPoints points
profileData SetLines lines
# Add thickness to the resulting line.
vtkTubeFilter profileTubes
profileTubes SetNumberOfSides 8
profileTubes SetInput profileData
profileTubes SetRadius .005
vtkPolyDataMapper profileMapper
profileMapper SetInputConnection [profileTubes GetOutputPort]
vtkActor profile
profile SetMapper profileMapper
eval [profile GetProperty] SetDiffuseColor $banana
[profile GetProperty] SetSpecular .3
[profile GetProperty] SetSpecularPower 30
# Now create the RenderWindow, Renderer and Interactor
#
vtkRenderer ren1
vtkRenderWindow renWin
renWin AddRenderer ren1
vtkRenderWindowInteractor iren
iren SetRenderWindow renWin
# Add the actors
ren1 AddActor glyph
ren1 AddActor profile
renWin SetSize 500 500
# render the image
#
iren Initialize
iren AddObserver UserEvent {wm deiconify .vtkInteract}
# prevent the tk window from showing up
wm withdraw .
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