Public Member Functions
Null Class Reference

## Detailed Description

The Null object is a specialized X3DObject object and represents a point in space with no dimensions. Nulls can be used to set constraints, organize objects into hierarchies, and so on.

See also:
  Light

Example:

            using namespace XSI;
            Application app;
            Model root = app.GetActiveSceneRoot();

            Null myNull;
            root.AddNull( L"MyNull", myNull );

            app.LogMessage( myNull.GetFullName() );

`#include <xsi_null.h>`

Inheritance diagram for Null:
[legend]

List of all members.

## Public Member Functions
| Null ()
| ~Null ()
| Null (const CRef &in_ref)
| Null (const Null &in_obj)
bool | IsA (siClassID in_ClassID) const
siClassID | GetClassID () const
Null & | operator= (const Null &in_obj)
Null & | operator= (const CRef &in_ref)

## Constructor & Destructor Documentation

Null | ( |  | ) |

Default constructor.

~Null | ( |  | ) |

Default destructor.

Null | ( | const CRef & | in_ref | ) |

Constructor.

Parameters:

  in_ref | constant reference object.

Null | ( | const Null & | in_obj | ) |

Copy constructor.

Parameters:

  in_obj | constant class object.

## Member Function Documentation

bool IsA | ( | siClassID | in_ClassID | ) | const `[virtual]`

Returns true if a given class type is compatible with this API class.

Parameters:

  in_ClassID | class type.

Returns:
  true if the class is compatible, false otherwise.

Reimplemented from X3DObject.

Reimplemented in CameraRig, LightRig, and Rig.

siClassID GetClassID | ( |  | ) | const `[virtual]`

Returns the type of the API class.

Returns:
  The class type.

Reimplemented from X3DObject.

Reimplemented in CameraRig, LightRig, and Rig.

Null& operator= | ( | const Null & | in_obj | ) |

Creates an object from another object. The newly created object is set to empty if the input object is not compatible.

Parameters:

  in_obj | constant class object.

Returns:
  The new Null object.

Null& operator= | ( | const CRef & | in_ref | ) |

Creates an object from a reference object. The newly created object is set to empty if the input reference object is not compatible.

Parameters:

  in_ref | constant class object.

Returns:
  The new Null object.

Reimplemented from X3DObject.

Reimplemented in CameraRig, LightRig, and Rig.

The documentation for this class was generated from the following file:

- xsi_null.h