189 lines
6.7 KiB
C++
Executable File
189 lines
6.7 KiB
C++
Executable File
#ifndef LINUX
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#pragma once
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#endif
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#ifndef _MFnBase
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#define _MFnBase
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//
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// *****************************************************************************
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//
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// Copyright (C) 1997-2001 Alias|Wavefront Inc.
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//
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// These coded instructions, statements and computer programs contain
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// unpublished information proprietary to Alias|Wavefront Inc. and are
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// protected by Canadian and US federal copyright laws. They may not be
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// disclosed to third parties or copied or duplicated, in whole or in part,
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// without prior written consent of Alias|Wavefront Inc.
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//
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// Unpublished-rights reserved under the Copyright Laws of the United States.
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//
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// *****************************************************************************
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//
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// CLASS: MFnBase
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//
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// *****************************************************************************
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//
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// CLASS DESCRIPTION (MFnBase)
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//
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// The API provides access to Maya Objects as generic MObjects. Under the
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// C++ class scheme MObjects simply have type MObject with no base or
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// derived hierarchy. However, MObjects may be many different types of
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// model or scene objects, from Attributes to Xforms, within Maya. This
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// allows many different types of objects to be moved across or accessed
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// through the API without undue concern on the part of plug-in developers
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// for the type of object being manipulated.
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//
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// Since it is impractical to provide every applicable method on MObjects,
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// the methods applicable to Maya Objects are encapsulated in Function
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// Sets. Function Sets can be attached to compatible MObjects to provide
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// an external interface to methods appropriate to that MObject.
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//
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// The link between an MObject and the role it performs as a Maya scene or
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// model object, as well as the compatibility between MObjects and
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// Function Sets is managed by the API Run-Time Type Identification (RTTI)
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// system. The two key concepts of this system are the Maya Object type
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// and the Function Set type (both are MFn::Type). All MObjects have
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// one and only one Maya Object type. All Function Sets have one and only
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// one Function Set type. MObjects may, however, be compatible with many
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// types of Function Sets. This compatibility follows the class hierarchy
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// of the Function Sets. Thus an MObject with Maya Object type
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// MFn::kNurbsSurface would be compatible with MFnNurbsSurface,
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// MFnDagNode, MFnDependencyNode, MFnNamedObject and MFnBase.
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//
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// Any MObject can be queried with the MObject::hasFn() method to
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// determine if it is comaptible with a given Function Set.
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//
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// The purpose of the Base Function Set (MFnBase) is to provide methods
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// for determining whether or not a Function Set is compatible with a
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// given Maya Object (MObject) type (MFn::Type) or a specific MObject. See:
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// MFnBase::hasObj(MFn::Type)
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// and
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// MFnBase::hasObj(const MObject &)
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//
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// As well, this Function Set provides virtual methods for determining the
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// type of a Function Set under the API RTTI system.
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//
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// *****************************************************************************
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#if defined __cplusplus
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// *****************************************************************************
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// INCLUDED HEADER FILES
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#include <maya/MFn.h>
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#include <maya/MStatus.h>
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#include <maya/MTypes.h>
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// *****************************************************************************
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// DECLARATIONS
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class MObject;
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class MPtrBase;
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// *****************************************************************************
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// CLASS DECLARATION (MFnBase)
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/// Function Set Base Class
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/**
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Defines the interface for the API RTTI and Maya Object attachment methods
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common to all Function Set Classes.
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Implements the Function Set compatibility test methods for all Function Sets.
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*/
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#ifdef _WIN32
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#pragma warning(disable: 4522)
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#endif // _WIN32
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class OPENMAYA_EXPORT MFnBase
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{
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public:
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///
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virtual ~MFnBase();
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///
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virtual MFn::Type type() const;
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///
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bool hasObj( MFn::Type ) const;
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///
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bool hasObj( const MObject & ) const;
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///
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MObject object( MStatus* ReturnStatus = NULL ) const;
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///
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virtual MStatus setObject( MObject & object );
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///
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virtual MStatus setObject( const MObject & object );
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protected:
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MFnBase();
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virtual const char* className() const;
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void setPtr( MPtrBase* );
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void setPtr( const MPtrBase* );
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void setPtrNull();
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virtual bool objectChanged( MFn::Type, MStatus * );
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MPtrBase* f_ptr; // initialized/set with volatile
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const MPtrBase* f_constptr; // initialized/set with volatile/const
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// Specific for function sets which use internally reference counted objects!
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// Only those function sets which use these objects need to set this to true.
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// By default it is set to false.
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//
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// Classes which do not use internally reference counted objects must not
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// tamper with this boolean value. Doing so can cause crashes when dealing with
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// manually deleted objects.
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//
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bool fIsReferenceCounted;
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private:
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#ifndef _WIN32
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MFnBase & operator=( const MFnBase & ) const;
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#endif
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MFnBase & operator=( const MFnBase & );
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MFnBase * operator& () const;
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MFnBase * operator& ();
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};
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#ifdef _WIN32
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#pragma warning(default: 4522)
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#endif // _WIN32
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// *****************************************************************************
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#define declareMinimalMFn( MFnClass ) \
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public: \
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virtual MFn::Type type() const; \
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virtual ~MFnClass(); \
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\
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protected: \
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virtual const char* className() const; \
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\
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private: \
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MFnClass & operator=( const MFnClass & ) const; \
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MFnClass & operator=( const MFnClass & ); \
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MFnClass * operator& () const; \
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MFnClass * operator& ()
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#define declareMFn( MFnClass, MFnParentClass ) \
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declareMinimalMFn( MFnClass ); \
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public: \
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MFnClass() {}; \
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MFnClass( MObject & object, MStatus * ReturnStatus = NULL );\
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MFnClass( const MObject & object, MStatus * ReturnStatus = NULL )
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// Standard MFn class interface *without* the class constructor. This
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// is to allow derived MFn classes to optionally specify their own
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// custom constructor. For example if they wanted to declare that they
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// use internally reference counted objects, they could set fIsReferenceCounted
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// to true inside their own custom constructor.
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//
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#define declareMFnNoConstructor( MFnClass, MFnParentClass ) \
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declareMinimalMFn( MFnClass ); \
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public: \
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MFnClass( MObject & object, MStatus * ReturnStatus = NULL );\
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MFnClass( const MObject & object, MStatus * ReturnStatus = NULL )
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#endif /* __cplusplus */
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#endif /* _MFnBase */
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