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lib/mayasdk7/include/maya/MSwatchRenderBase.h

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+#ifndef _MSwatchRenderBase
+#define _MSwatchRenderBase
+
+//
+//-
+// ==========================================================================
+// Copyright (C) Alias Systems Corp., and/or its licensors ("Alias").  
+// All rights reserved.  These coded instructions, statements, computer  
+// programs, and/or related material (collectively, the "Material")
+// contain unpublished information proprietary to Alias, which is
+// protected by Canadian and US federal copyright law and by international
+// treaties. This Material may not be disclosed to third parties, or be copied
+// or duplicated, in whole or in part, without the prior written consent of
+// Alias.  ALIAS HEREBY DISCLAIMS ALL WARRANTIES RELATING TO THE MATERIAL,
+// 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 OR RELATED TO THE
+// ACCESS TO, USE OF, OR RELIANCE UPON THE MATERIAL.
+// ==========================================================================
+//+
+//
+// CLASS:    MSwatchRenderBase
+//
+// ****************************************************************************
+//
+// CLASS DESCRIPTION (MSwatchRenderBase)
+//
+// ****************************************************************************
+
+#if defined __cplusplus
+
+#ifdef _WIN32
+#pragma warning(disable: 4522)
+#endif // _WIN32
+
+// INCLUDED HEADER FILES
+
+
+#include <maya/MImage.h>
+
+// DECLARATIONS
+
+class MObject ;
+
+/// Swatch Render Base class 
+/**
+A class providing an interface through which a plugin can implement a
+class to provide custom rendered images for swatches which are
+displayed in hypershade and the Attribute Editor.
+
+By deriving from this class and implementing the doIteration function,
+swatches for nodes (having the required classification) can be custom
+rendered by the plugin.
+
+The derived class needs to be registered with Maya using the interface
+provided by MSwatchRenderRegister.  Please refer to documentation of
+MSwatchRenderRegister for more details.
+
+To indicate that swatch for a certain node type will be generated by
+the plugin the classfication string of the node needs to contain the
+following string : "swatch/<swatch generator name>" The swatch
+generator name string should match the name used to register the
+swatch generator class.
+*/
+class OPENMAYARENDER_EXPORT MSwatchRenderBase {
+public:
+	/// constructor 
+	MSwatchRenderBase(MObject obj, MObject renderObj, int res);
+	
+	/// destructor 
+	virtual	~MSwatchRenderBase();
+
+	/// Method called to do swatch image generation, derived classes
+	/// needs to implement this.
+	virtual bool doIteration()  ;
+
+	/// returns the node for which the swatch is required to be generated
+	MObject swatchNode() const ;
+	/// returns the node used to compute the swatch
+	MObject node() const ;
+
+	/// returns the expected resolution of the swatch image 
+	int		resolution() const ;
+	
+	/// returns the swatch image
+	MImage&  image() ;
+	// this has to be a reference otherwise the internal image gets deleted !
+
+protected :
+	// node for which the swatch is required
+	MObject fObjToSwatch ;
+	MObject fObjToRender ;
+
+	// object in which the swatch image should be stored
+	MImage fImage ;
+
+	// resolution at which the swatch image is to be generated
+	int fRes ;
+	
+private:
+	// No private members
+};
+
+inline 
+MObject MSwatchRenderBase::swatchNode() const
+{
+	return fObjToSwatch ;
+}
+
+inline 
+MObject MSwatchRenderBase::node() const
+{
+	return fObjToRender ;
+}
+
+inline int		
+MSwatchRenderBase::resolution() const
+{
+	return fRes ;
+}
+
+inline MImage&
+MSwatchRenderBase::image() 
+{
+	return fImage ;
+}
+
+#ifdef _WIN32
+#pragma warning(default: 4522)
+#endif // _WIN32
+
+// ****************************************************************************
+
+#endif /* __cplusplus */
+#endif /* _MSwatchRenderBase */