From KitwarePublic

It would be appreciated if there are any Python VTK experts who could convert any of the c++ examples to Python!

Contents 1 Simple Operations 2 Input and Output 2.1 Output 2.2 Input 3 Working with Arrays 4 Geometric Objects 4.1 Parametric Objects 4.2 Display 5 Working with PolyData 6 Miscellaneous 7 Visualization 8 Working with vtkImageData 9 Graphs 10 User Interaction 11 Infovis 12 Geovis 13 Widgets 14 Utilities 15 Broken/Missing Examples 16 Broken/Missing Python Functionality

Simple Operations

Example Name	VTK Classes Demonstrated	Description
Distance between two points	vtkMath::Distance2BetweenPoints
Random numbers	n/a	Random numbers can be generated with Python's random module

Input and Output

Output

Input

Example Name	VTK Classes Demonstrated	Description
Using STLReader to read an STL file	vtkSTLReader
Using vtkVTPReader to read a VTP file	vtkXMLPolyDataReader
UnstructuredGridReader.py	vtkUnstructuredGridReader	Using vtkUnstructuredGridReader to read a (legacy) *.vtk file
Using vtkFLUENTReader to read a Fluent case file	vtkFLUENTReader	Using vtkFLUENTReader to read a Fluent case file and extract the unstructured grid.

Working with Arrays

Example Name	VTK Classes Demonstrated	Description
Get a value from an array	GetTuple3
Rename an array	SetName

Geometric Objects

Parametric Objects

Example Name	VTK Classes Demonstrated	Description
Create and display a parametric object	vtkParametricBoy, vtkParametricConicSpiral, vtkParametricCrossCap, vtkParametricDini, vtkParametricEllipsoid, vtkParametricEnneper, vtkParametricFigure8Klein, vtkParametricKlein, vtkParametricMobius, vtkParametricRandomHills, vtkParametricRoman, vtkParametricSpline, vtkParametricSuperEllipsoid, vtkParametricSuperToroid, vtkParametricTorus

Display

Example Name	VTK Classes Demonstrated	Description
Compute the intersection of a line segment with a polygon	vtkPolygon	IntersectWithLine()
A demonstration of all geometric objects that work the same way
Arrow	vtkArrowSource
Axes	vtkAxesActor
Colored Lines	vtkCellData vtkLine
Cone	vtkConeSource
Cube	vtkCubeSource
Cylinder	vtkCylinderSource
Disk	vtkDiskSource	A circle with a hole in it.
Frustum	vtkFrustumSource
Line	vtkLineSource
Manually create a polyline	vtkLine
Hexahedron	vtkHexahedron
Oriented Arrow	vtkArrowSource
Plane	vtkPlaneSource
Planes	vtkPlanes
PlanesIntersection	vtkPlanesIntersection
PlatonicSolid	vtkPlatonicSolidSource
Point	vtkPoints
Polygon	vtkPolygon
Pyramid	vtkPyramid
PolyLine	vtkPolyLine	This example demonstrates how to create a polygon through several ordered points.
Quad	vtkQuad
Regular Polygon	vtkRegularPolygonSource
Sphere	vtkSphereSource
Triangle	vtkTriangle
Triangle strip	vtkTriangleStrip
Tetrahedron	vtkTetra
Vertex	vtkVertex
Display vtkPointSource	vtkPointSource
Display text with vtkTextActor	vtkTextActor	2D "HUD-type" text
vtkDataSetSurfaceFilter	vtkDataSetSurfaceFilter

Working with PolyData

Example Name	VTK Classes Demonstrated	Description
Draw an outline box around an object	vtkOutlineFilter
Rotation around a line with RotateWXYZ	vtkTransformPolyDataFilter, vtkTransform
Write the corners of a triangle to a file	vtkXMLPolyDataWriter
Write the corners of a triangle to a file (+vertices)	vtkCellArray
Write a triangle with colored points	vtkUnsignedCharArray
Write a colored triangle	vtkTriangle
Write a solid colored triangle	vtkTriangle
Write a triangle to a file	vtkTriangle
Iterative Closest Points (ICP)	vtkIterativeClosestPointTransform
Mesh a label image and write cell info to file	vtkDiscreteMarchingCubes
Mesh a label image, smooth it and colour it according to the smoothing error	vtkDiscreteMarchingCubes
Get a filled polygon from vtkCutter	vtkCutter
Create a dotted line	vtkActor::GetProperty::SetLineStipplePattern

Miscellaneous

Example Name	VTK Classes Demonstrated	Description
Screenshot	vtkWindowToImageFilter
check VTK version	vtkVersion
vtkCutter	vtkCutter
vtkImplicitDataSet	vtkImplicitDataSet	Clip one data set with another
vtkIdType	n/a	This is just a typedef, so in Python, you can use a python "int" or "long" for vtkIdType.
Using Numpy	n/a
vtkVariant	vtkVariant

Visualization

Example Name	VTK Classes Demonstrated	Description
Get a list of the visible triangles	vtkHardwareSelector
Display a quadratic surface	vtkQuadric
PointSize	vtkActor::GetProperty()::SetPointSize
Color an Actor	vtkActor::GetProperty()::SetColor
Unstructured Transient Volume Rendering	vtkUnstructuredGridVolumeRayCastMapper
Change the title of the render window	vtkRenderWindow::SetWindowName
Animation	vtkTimerCallback
Create a single render window with muliple viewports	vtkRenderer::SetViewport
InteractorStyleTrackBallCamera	vtkInteractorStyleTrackBallCamera
InteractorStyleTrackBallActor	vtkInteractorStyleTrackBallActor
Camera	vtkCamera
Create Text	vtkTextSource
Clamp glyph sizes	vtkGlyph3D	Use vtkGlyph3D with ClampingOn to limit glyph sizes
Use a glyph table	vtkGlyph3D	Vary the shapes of glyphed points using a glyph table
Programmable glyphs	vtkProgrammableGlyphFilter	Vary the shapes of glyphed points using a programmable glyph filter
Apply a texture to a sphere	vtkTextureMapToSphere	Apply an ImageData texture to an sphere

Working with vtkImageData

Example Name	VTK Classes Demonstrated	Description
Summing images	vtkImageWeightedSum

Graphs

Example Name	VTK Classes Demonstrated	Description
Create and visualize a graph	vtkMutableDirectedGraph, vtkGraphLayoutView
Add edge weights to a graph	vtkMutableDirectedGraph, vtkGraphLayoutView
Get a list of the selected vertices and edges	vtkAnnotationLink, vtkGraphLayoutView

User Interaction

Example Name	VTK Classes Demonstrated	Description
Handle mouse events	vtkInteractorStyleTrackballCamera	Subclass the interactor style.
Handle mouse events (light weight)	vtkCallbackCommand	Use an observer.

Infovis

Example Name	VTK Classes Demonstrated	Description
View Selected Graph IDs	vtkRandomGraphSource, vtkGraphLayoutView	Callback on vtkAnnotationLink in a Graph Layout View when selection is changed
Parallel Coordinates View	vtkParallelCoordinatesView	Plotting data attributes in a Parallel Coordinates View
Parallel Coordinates Extraction	vtkExtractSelection	Extract data based on a selection in a Parallel Coordinates View

Geovis

Example Name	VTK Classes Demonstrated	Description
vtkGeoAssignCoordinates	vtkGeoAssignCoordinates

Widgets

Example Name	VTK Classes Demonstrated	Description
Balloon Widget	vtkBaloonWidget
Annotated cube with vtkOrientationWidget	vtkAnnotatedCubeActor vtkOrientationWidget
vtkCompassWidget	vtkCompassWidget
Contour widget	vtkCotourWidget
TextWidget	vtkTextWidget	Annotate a VTK image with movable text
ScalarBarWidget	vtkScalarBarWidget	The ScalarBarWidget displays a scalar bar that is movable and changes orienation automatically when close to the borders of the image. It needs a ScalarBarActor

Utilities

Example Name	VTK Classes Demonstrated	Description
vtkDelaunay2D	vtkDelaunay2D

Broken/Missing Examples

Broken/Missing Python Functionality

Example Name	VTK Classes Demonstrated	Description
vtkFrustumSource not available in Python ??
PointInPolygon not available in Python ?
method FindClosestPoint (and others) of vtkCellLocator not available in Python