vtkLabelPlacementMapper

Section: Visualization Toolkit Rendering Classes

Usage

To use this mapper, first send your data through vtkPointSetToLabelHierarchy, which takes a set of points, associates special arrays to the points (label, priority, etc.), and produces a prioritized spatial tree of labels.

This mapper then takes that hierarchy (or hierarchies) as input, and every frame will decide which labels and/or icons to place in order of priority, and will render only those labels/icons. A label render strategy is used to render the labels, and can use e.g. FreeType or Qt for rendering.

To create an instance of class vtkLabelPlacementMapper, simply invoke its constructor as follows

  obj = vtkLabelPlacementMapper

Methods

The class vtkLabelPlacementMapper has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, obj is an instance of the vtkLabelPlacementMapper class.