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lib/mayasdk7/include/maya/MGeometryData.h

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+//
+//-
+// ==========================================================================
+// 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+// material (collectively the "Data") in these files contain unpublished 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:    MGeometryData
+//
+// *****************************************************************************
+//
+// CLASS DESCRIPTION (MGeometryData)
+//
+// MGeometryData is a class which allows storage of arbitrary data which
+// is formated to be specifically suitable for usage using a 3D display
+// interface such as OpenGL.
+//
+// Format options include:
+//		- Each element can current be of a 1, 2, 3, 4 tuple.
+//		- Element type can be IEEE single or double precision float,
+//		  signed or unsigned byte (character), 16 or 32 bit signed unsigned integers.
+//		- There are specific "type" identifiers to provide a semantic on
+//		  for the data. These include:
+//			- position : vertex position vector
+//			- normal : vertex normal vector
+//			- texCoord : vertex texture coordinate vector
+//			- color : vertex color vector
+//			- weight : vertex skin weight vector
+//			- tangent : vertex tangent vector
+//			- binormal : vertex binormal vector
+//			- velocity : vertex velocity vector
+//			- primitiveCenter : center a primitive (e.g. a triangle)
+//			- colorMask : colour existance mask. 1:1 correspondance with color
+//			- useData : some user defined data. A semantic that Maya
+//			  does not understand.
+// 
+//	Currently Maya only interprets a fixed format subset for data with recongnized semantics, 
+//  This does not mean that the user cannot create any arbitrary format for data storage.
+//  Support formats with semantics includes:
+//
+//		- 3 float position interpreted as (x,y,z).
+//		- 3 float normal interpreted as (x,y,z).
+//		- 2 float texture coordinate. Coorindate is interpreted as a (U,V) tuple.
+//		- 4 float color. Color is interpreted as (Red, Green, Blue, Alpha) tuple.
+//		- 3 float tangent interpreted as (x,y,z).
+//		- 3 flaot binormal interpreted as (x,y,z).
+//		- 3 float velocity interpreted as (x,y,z).
+//		- 3 float primitive center position interpreted as (x,y,z).
+//		- 1 float color mask interpreted as 1=mapped, and 0 = unmapped.
+//
+// Memory allocation of the correct size is left up to the user of this class.
+// Memory can marked to be "owned" by this class or the user of ths class. Ownership
+// by this class is the default behaviour specified in the constructor.
+// If the data is marked as being owned by the class, it is assumed that the data 
+// is created using a "new" operation, as the destructor of this class will use
+// a "delete" operation to free memory.
+//
+// Internal Maya data which is passed to the user via this class is always assumed to be
+// non-modifiable. If modified stability cannot be ensured.
+//
+// *****************************************************************************
+
+#if defined __cplusplus
+
+// *****************************************************************************
+
+// INCLUDED HEADER FILES
+
+#ifndef _MGeometryData
+#define _MGeometryData
+
+#include <maya/MTypes.h>
+
+class MHardwareRenderer;
+
+// *****************************************************************************
+
+// CLASS DECLARATION (MGeometryData)
+
+/// Geometric data container
+/**
+This class is a geometric data container
+*/
+#ifdef _WIN32
+#pragma warning(disable: 4522)
+#endif // _WIN32
+
+class OPENMAYARENDER_EXPORT MGeometryData
+{
+public:
+	/// Specifies the size or dimension of each data element of the storage.
+	///
+	enum ElementSize {
+		///
+		kInvalidElementSize = 0,
+		/// Single value
+		kOne = 1,
+		/// 2-tuple
+		kTwo,
+		/// 3-tuple
+		kThree,
+		/// 4-tuple
+		kFour
+	};
+
+	/// Specifies the data type of each data element of the storage.
+	///
+	enum ElementType {
+		/// Invalid element type (default value)
+		kInvalidElementType = -1,
+		/// IEEE single precision floating point
+		kFloat = 0,
+		/// IEEE double precision floating point
+		kDouble,
+		/// Signed char
+		kChar,
+		/// Unsigned char
+		kUnsignedChar,
+		/// Signed 16-bit integer
+		kInt16,
+		/// Unsigned 16-bit integer
+		kUnsignedInt16,
+		/// Signed 32-bit integer
+		kInt32,
+		/// Unsigned 32-bit integer
+		kUnsignedInt32
+	};
+	
+	/// Specifies the data type of the storage array.
+	///
+	enum DataType {
+		/// Invalid data type (default value)
+		kInvalidDataType = 0, 
+		/// Position vector
+		kPosition,		    
+		/// Normal vector
+		kNormal,    		
+		/// Texture coordinate tuple
+		kTexCoord,	    	
+		/// Color tuple
+		kColor,		    	
+		/// Vertex weighting data
+		kWeight,	    	
+		/// Separator to indicate native draw API supported types
+		kAPISupported,  	
+		/// Tangent vector
+		kTangent,       	
+		/// Bi-normal vector
+		kBiNormal,	    	
+		/// Velocity vector
+		kVelocity,			
+		/// Center of primitive 
+		kPrimitiveCenter,	
+		/// Mapped, unmapped color mask
+		kColorMask,			
+		/// Arbitrary "user data"
+		kUserData,	    	
+		/// Valid entries are < kMaxDataTypeIndex 
+		kMaxDataTypeIndex	
+	};
+
+	/// Constructor
+	///
+	MGeometryData(
+		const char *	dataName,
+        DataType		dataType,
+        ElementType		elementType,
+        ElementSize		elementSize,
+        unsigned int	elementCount,
+        void*			dataPtr = NULL,
+		bool			ownsData = true);
+
+	/// Destructor
+	///
+	~MGeometryData();
+
+	///
+	const char *	objectName() const;	
+	///
+	int				uniqueID() const;	
+	///
+    DataType 		dataType() const;	
+	///
+    ElementType		elementType() const;	
+	///
+	unsigned int	elementTypeSize() const;
+	///
+    ElementSize		elementSize() const;	
+	///
+    unsigned int	elementCount() const;
+	///
+    void *			data() const;
+	///
+    void			setCollectionNumber(int cn); 
+	///
+    int				collectionNumber() const;
+	///
+	void			setObjectOwnsData(bool val);
+	///
+	bool			objectOwnsData() const;
+
+protected:
+	// Default constructor is protected
+	MGeometryData();
+	// Data destructor is protected
+	void release();
+
+	friend class MHardwareRenderer;
+
+	void *_pGeometryData;
+
+private:
+// No private members
+
+};
+
+#endif
+#endif // _MGeometryData