CxxHowTo.md

C++ How To

Often you just need a "pointer" to an example that shows you how to do something.

Here are some snippets and examples that highlight interesting features that may help you:

Camera

Example Name	Comments	Image
CameraModel1	Illustrate camera movement around the focal point.
CameraModel2	camera movement centered at the camera position.
CameraPosition	Get the camera position while moving the image.
MergeSelections	Use the same camera for all renderers.
ShareCamera	Use the same camera for all renderers.

Coloring

Example Name	Comments	Image
BackgroundGradient	Background gradient.
KochanekSplineDemo	How to color the slider components.
MergeSelections	A nifty way to get a "harmonious" set of window colors, using vtkNamedColors and vtkColorSeries.
ShareCamera	Store background colors in a vector for later extraction of the red, green and blue components.

Glyphing

Example Name	Comments	Image
QuantizePolyDataPoints	Represent a point by a glyph.

Image

Example Name	Comments	Image
WriteImage	Write out an image of various types.

Polydata

Example Name	Comments	Image
ReadPolyData	This snippet works for most PolyData.

Random

If you want to ensure that the same random points/colors are used in C++ and other languages then it is best to use vtkMinimalStandardRandomSequence.

Example Name	Comments	Image
ColorDisconnectedRegionsDemo	A vtkLookupTable is filled with random colors.
HighlightWithSilhouette	Here we use randomly positioned spheres with random colors. A vtkLookupTable is filled with random colors.

Render Windows

Example Name	Comments	Image
Model	Multiple render windows.