Class SoInputReader

  • All Implemented Interfaces:
    SafeDisposable
    Direct Known Subclasses:
    SoCADInputReader, SoSTLInputReader

    public abstract class SoInputReader
    extends Inventor
    implements SafeDisposable
    Base class for custom readers that create an Open Inventor scene graph. This class defines the base interface for loading a scene graph from an data format that is not directly supported by Open Inventor.

    Input readers should be loaded and managed as plugins. Open Inventor automtically attempts to load all files that may be plugin libraries (files with the extension .dll or .so depending on the platform). Plugin libraries may also be explicitly loaded using SoDB.addPlugin(). See more details on that page. The file name convention (not required) for readers is "Iv*Reader.dll (or .so)".

    A plugin library must implement the initPlugin() and exitPlugin() C-formatted entry-points. The initPlugin() function is responsible for registering the new class (or classes) in the Open Inventor database through the standard SoType type creation mechanism. The exitPlugin() function is used to disable the use of the custom class(s) by removing the corresponding type(s) from the Open Inventor database.

    When SoDB.readAll() (for example) is called to create a scene graph from a file or buffer, Open Inventor first attempts to handle the data as .iv format. If that fails, Open Inventor will call the canConvert() method for each loaded plugin class, that is derived from SoInputReader, in the order they were loaded. The first reader plugin that returns true from this method will be used to handle the data.

    SoInput, SoDB.addPlugin()SoDB.removePlugin() SoDB.getPlugins() SoDB.addPluginsDirectory()SoDB.removePluginsDirectory()SoDB.getPluginsDirectories()

    • Method Detail

      • dispose

        public boolean dispose()
        Description copied from class: Inventor
        Explicitly call this method to force object to dispose its unmanaged resources. The object may not be reused in the application code after this call.
        Specified by:
        dispose in interface SafeDisposable
        Overrides:
        dispose in class Inventor
        Returns:
        true if this object native resources were successfully disposed; false if it was already disposed or no native resources has been registered for this object.
      • convert

        public SoSeparator convert​(SoInput name_13923)
        Returns the specified input source in the form of an Open Inventor scene graph. Note that the input source (SoInput object) may be a file or a buffer (memory). This method should return NULL if the input source is a buffer and the reader does not support reading from a buffer. SoInput.getCurFile() returns NULL if the input source is a buffer.
      • canConvert

        public boolean canConvert​(SoInput in)
        Returns true if the specified input source can be converted by this plugin. Note that the input source (SoInput object) may be a file or a buffer (memory). This method should return false if the input source is a buffer and the reader does not support reading from a buffer. SoInput.getCurFile() returns NULL if the input source is a buffer.