D3DGeometryItem.h

#ifndef D3DGeometryItem_h_
#define D3DGeometryItem_h_

#if defined(D3D9_SUPPORTED)

#include <maya/MDagPath.h>
#include <maya/MObjectHandle.h>
#include <maya/MMessage.h> // For monitoring geometry list nodes
#include <list>

        #define WIN32_LEAN_AND_MEAN
        #include <d3d9.h>
        #include <d3dx9.h>

//
// A class to manage populate and render D3D buffers representing Maya geometry
//
class D3DGeometry
{
public:
        D3DGeometry()
                : VertexBuffer( NULL), IndexBuffer( NULL), FVF( 0), Stride( 0), NumVertices( 0), NumIndices( 0)
        {
        }
        ~D3DGeometry() 
        { 
                Release(); 
        }
        bool Populate( const MDagPath& dagPath, LPDIRECT3DDEVICE9 D3D);
        bool Render( LPDIRECT3DDEVICE9 D3D)
        {
            D3D->SetStreamSource( 0, VertexBuffer, 0, Stride );
            D3D->SetFVF( FVF);
                D3D->SetIndices( IndexBuffer); 
                D3D->DrawIndexedPrimitive( D3DPT_TRIANGLELIST, 0, 0, NumVertices, 0, NumIndices / 3);
                return true;
        }
        void Release()
        {
                if( VertexBuffer) 
                        VertexBuffer->Release(); 
                if( IndexBuffer) 
                        IndexBuffer->Release(); 
                VertexBuffer = NULL;
                IndexBuffer = NULL;
        }

private:
        LPDIRECT3DVERTEXBUFFER9 VertexBuffer;
        LPDIRECT3DINDEXBUFFER9  IndexBuffer;
        unsigned int                    NumVertices;
        unsigned int                    NumIndices;
        DWORD                                   FVF;
        int                                             Stride;
};

// Geometry item use to associate a D3DGeometry with Maya geometry
//
struct GeometryItem {
        MDagPath                                m_objectPath;
        D3DGeometry*                    m_objectGeometry;
        MCallbackId                             m_objectDeleteMonitor;
        MCallbackId                             m_objectDirtyMonitor;
        MCallbackId                             m_objectChangeMonitor;
};
typedef std::list<GeometryItem*> GeometryItemList;

#endif

#endif /* D3DGeometryItem_h_ */

//-
// ==========================================================================
// Copyright 1995,2006,2008 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+