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lib/mayasdk7/include/maya/MPxGeometryIterator.h

@@ -0,0 +1,169 @@
+
+#ifndef _MPxGeometryIterator
+#define _MPxGeometryIterator
+//
+//-
+// ==========================================================================
+// Copyright (C) 1995 - 2005 Alias Systems Corp. and/or its licensors.  All 
+// rights reserved.
+// 
+// The coded instructions, statements, computer programs, and/or related 
+// material (collectively the "Data") in these files contain unpublished 
+// information proprietary to Alias Systems Corp. ("Alias") and/or its 
+// licensors, which is protected by Canadian and US federal copyright law and 
+// by international treaties.
+// 
+// The Data may not be disclosed or distributed to third parties or be copied 
+// or duplicated, in whole or in part, without the prior written consent of 
+// Alias.
+// 
+// THE DATA IS PROVIDED "AS IS". ALIAS HEREBY DISCLAIMS ALL WARRANTIES RELATING 
+// TO THE DATA, INCLUDING, WITHOUT LIMITATION, ANY AND ALL EXPRESS OR IMPLIED 
+// WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND/OR FITNESS FOR A 
+// PARTICULAR PURPOSE. IN NO EVENT SHALL ALIAS BE LIABLE FOR ANY DAMAGES 
+// WHATSOEVER, WHETHER DIRECT, INDIRECT, SPECIAL, OR PUNITIVE, WHETHER IN AN 
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, OR IN EQUITY, 
+// ARISING OUT OF ACCESS TO, USE OF, OR RELIANCE UPON THE DATA.
+// ==========================================================================
+//+
+//
+// CLASS:    MPxGeometryIterator
+//
+// *****************************************************************************
+//
+// CLASS DESCRIPTION (MPxGeometryIterator)
+//
+//  This is the base class for user defined geometry iterators.
+//  Geometry iterator allow iterating over components in geometry
+//  in a geometry independent manner. This base class defines
+//  the interface to be used maya when a generic component iteration
+//  is required.
+//
+//  This class is used in conjunction with MPxSurfaceShape to provide
+//  an iterator for components in a user defined shape.
+//  The main methods to override in this class are point and set point.
+//  The reset, isDone, and next methods have a default implementation
+//  and should only be overridden if the component being iterator on
+//  is not a single indexed component type.
+//
+// *****************************************************************************
+
+#if defined __cplusplus
+
+// *****************************************************************************
+
+// INCLUDED HEADER FILES
+
+
+
+#include <maya/MStatus.h>
+#include <maya/MTypes.h>
+#include <maya/MObject.h>
+
+// *****************************************************************************
+
+// DECLARATIONS
+ 
+class MPxSurfaceShape;
+class MPoint;
+class MObjectArray;
+class TcomponentList;
+
+// *****************************************************************************
+
+// CLASS DECLARATION (MPxGeometryIterator)
+
+/// the base class for user defined geometry iterators
+/**
+*/
+#ifdef _WIN32
+#pragma warning(disable: 4522)
+#endif // _WIN32
+
+class OPENMAYA_EXPORT MPxGeometryIterator
+{
+public:
+    ///
+	MPxGeometryIterator( void * userGeometry, MObjectArray & components );
+	///
+	MPxGeometryIterator( void * userGeometry, MObject & components );
+    ///
+	virtual ~MPxGeometryIterator();
+
+	/////////////////////////////////////////////////////////////////////////
+	// Methods to overload
+
+	// Item by item traversal methods
+	//
+	///
+	virtual bool			isDone() const;
+	///
+	virtual void			next();
+	///
+	virtual void			reset();
+
+	// component for Item 
+	///
+	virtual void			component( MObject &component );
+
+	// Item's point info access methods
+	//
+	///
+	virtual bool			hasPoints() const;
+	///
+	virtual int				iteratorCount() const;
+	///
+	virtual MPoint			point() const;
+	///
+	virtual void			setPoint( const MPoint & ) const;
+	///
+	virtual int				setPointGetNext( MPoint & );
+	///
+	virtual int				index() const;
+
+
+	///
+	virtual bool			hasNormals() const;
+
+	///
+	virtual int				indexUnsimplified() const;
+
+	////////////////////////////////////////////////////////////////////////
+
+	// Methods to access the iterator values.
+	// These values are used when iterating over all components
+	// of a shape when there are no components specified.
+	///
+	int						currentPoint() const;
+	///
+	void					setCurrentPoint( int );
+	///
+	int						maxPoints() const;
+	///
+	void					setMaxPoints( int );
+
+		
+
+	//	Method to (optionally) set object (to allow tweaking of history)
+	//
+	///
+	void					setObject( MPxSurfaceShape & );
+
+	///
+	void*					geometry() const;
+	
+protected:
+	  
+private:
+	static const char*	    className();
+	void * instance;
+	TcomponentList			*compList;
+};
+
+#ifdef _WIN32
+#pragma warning(default: 4522)
+#endif // _WIN32
+
+// *****************************************************************************
+#endif /* __cplusplus */
+#endif /* _MPxGeometryIterator */