vtkObjectFactory

Section: Visualization Toolkit Common Classes

Usage

vtkObjectFactory is used to create vtk objects. The base class vtkObjectFactory contains a static method CreateInstance which is used to create vtk objects from the list of registered vtkObjectFactory sub-classes. The first time CreateInstance is called, all dll's or shared libraries in the environment variable VTK_AUTOLOAD_PATH are loaded into the current process. The C functions vtkLoad, vtkGetFactoryCompilerUsed, and vtkGetFactoryVersion are called on each dll. To implement these functions in a shared library or dll, use the macro: VTK_FACTORY_INTERFACE_IMPLEMENT. VTK_AUTOLOAD_PATH is an environment variable containing a colon separated (semi-colon on win32) list of paths.

The vtkObjectFactory can be use to override the creation of any object in VTK with a sub-class of that object. The factories can be registered either at run time with the VTK_AUTOLOAD_PATH, or at compile time with the vtkObjectFactory::RegisterFactory method.

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

  obj = vtkObjectFactory

Methods

The class vtkObjectFactory 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 vtkObjectFactory class.