Original Post
Hi, im trying to loading .x objects into a graphic motor SDK DX9 based, i''ve found a function in the SDK package: D3DXLoadMeshFromX() and it takes 8 parameter,
i use it in this way :
D3DXLoadMeshFromX( strPath, D3DXMESH_SYSTEMMEM, pd3dDevice,
NULL, &pMtrlBuffer, NULL,
&m_dwNumMaterials, &m_pSysMemMesh );
The first parameter is the filename of the .x object, then there is a flag, LPDIRECT3DDEVICE9 pd3dDevice, LPD3DXBUFFER pMtrlBuffer,a DWORD m_dwNumMaterials and.... the last parameter LPD3DXMESH m_pSysMemMesh (that i thought it was a structure, it isn''t'') is an interface and is so defined:
...
...
typedef struct ID3DXMesh *LPD3DXMESH;
...
...
...
#undef INTERFACE
#define INTERFACE ID3DXMesh
DECLARE_INTERFACE_(ID3DXMesh, ID3DXBaseMesh)
{
// IUnknown
STDMETHOD(QueryInterface)(THIS_ REFIID iid, LPVOID *ppv) PURE;
STDMETHOD_(ULONG, AddRef)(THIS) PURE;
STDMETHOD_(ULONG, Release)(THIS) PURE;
// ID3DXBaseMesh
STDMETHOD(DrawSubset)(THIS_ DWORD AttribId) PURE;
STDMETHOD_(DWORD, GetNumFaces)(THIS) PURE;
STDMETHOD_(DWORD, GetNumVertices)(THIS) PURE;
STDMETHOD_(DWORD, GetFVF)(THIS) PURE;
STDMETHOD(GetDeclaration)(THIS_ D3DVERTEXELEMENT9 Declaration[MAX_FVF_DECL_SIZE]) PURE;
STDMETHOD_(DWORD, GetNumBytesPerVertex)(THIS) PURE;
STDMETHOD_(DWORD, GetOptions)(THIS) PURE;
STDMETHOD(GetDevice)(THIS_ LPDIRECT3DDEVICE9* ppDevice) PURE;
STDMETHOD(CloneMeshFVF)(THIS_ DWORD Options,
DWORD FVF, LPDIRECT3DDEVICE9 pD3DDevice, LPD3DXMESH* ppCloneMesh) PURE;
STDMETHOD(CloneMesh)(THIS_ DWORD Options,
CONST D3DVERTEXELEMENT9 *pDeclaration, LPDIRECT3DDEVICE9 pD3DDevice, LPD3DXMESH* ppCloneMesh) PURE;
STDMETHOD(GetVertexBuffer)(THIS_ LPDIRECT3DVERTEXBUFFER9* ppVB) PURE;
STDMETHOD(GetIndexBuffer)(THIS_ LPDIRECT3DINDEXBUFFER9* ppIB) PURE;
STDMETHOD(LockVertexBuffer)(THIS_ DWORD Flags, void** ppData) PURE;
STDMETHOD(UnlockVertexBuffer)(THIS) PURE;
STDMETHOD(LockIndexBuffer)(THIS_ DWORD Flags, void** ppData) PURE;
STDMETHOD(UnlockIndexBuffer)(THIS) PURE;
STDMETHOD(GetAttributeTable)(
THIS_ D3DXATTRIBUTERANGE *pAttribTable, DWORD* pAttribTableSize) PURE;
STDMETHOD(ConvertPointRepsToAdjacency)(THIS_ CONST DWORD* pPRep, DWORD* pAdjacency) PURE;
STDMETHOD(ConvertAdjacencyToPointReps)(THIS_ CONST DWORD* pAdjacency, DWORD* pPRep) PURE;
STDMETHOD(GenerateAdjacency)(THIS_ FLOAT Epsilon, DWORD* pAdjacency) PURE;
STDMETHOD(UpdateSemantics)(THIS_ D3DVERTEXELEMENT9 Declaration[MAX_FVF_DECL_SIZE]) PURE;
// ID3DXMesh
STDMETHOD(LockAttributeBuffer)(THIS_ DWORD Flags, DWORD** ppData) PURE;
STDMETHOD(UnlockAttributeBuffer)(THIS) PURE;
STDMETHOD(Optimize)(THIS_ DWORD Flags, CONST DWORD* pAdjacencyIn, DWORD* pAdjacencyOut,
DWORD* pFaceRemap, LPD3DXBUFFER *ppVertexRemap,
LPD3DXMESH* ppOptMesh) PURE;
STDMETHOD(OptimizeInplace)(THIS_ DWORD Flags, CONST DWORD* pAdjacencyIn, DWORD* pAdjacencyOut,
DWORD* pFaceRemap, LPD3DXBUFFER *ppVertexRemap) PURE;
STDMETHOD(SetAttributeTable)(THIS_ CONST D3DXATTRIBUTERANGE *pAttribTable, DWORD cAttribTableSize) PURE;
};
I dont know what an interface is, but i think the .x object data are loaded into this interface, and at this point there is my problem....
i want to copy the .x object data from this interface to my data object structure:
typedef struct OBJECT4DV2_TYP
{
int id; // numeric id of this object
char name[64]; //
int state; // state of object
int attr; // attributes of object
int mati; // material index overide (-1) - no material (new)
float *avg_radius; // [OBJECT4DV2_MAX_FRAMES]; // average radius of object used for collision detection
float *max_radius; // [OBJECT4DV2_MAX_FRAMES]; // maximum radius of object
POINT4D world_pos; // position of object in world
VECTOR4D dir; // rotation angles of object
VECTOR4D ux,uy,uz; // local axes to track full orientation
int num_vertices; // number of vertices per frame of this object
int num_frames; // number of frames
int total_vertices;
int curr_frame; // current animation frame (0) if single frame
VERTEX4DTV1_PTR vlist_local;
VERTEX4DTV1_PTR vlist_trans;
VERTEX4DTV1_PTR head_vlist_local;
VERTEX4DTV1_PTR head_vlist_trans;
POINT2D_PTR tlist; // 3*num polys at max
BITMAP_IMAGE_PTR texture; // pointer to the texture information for simple texture mapping
int num_polys; // number of polygons in object mesh
POLY4DV2_PTR plist; // ptr to polygons
int ivar1, ivar2;
float fvar1, fvar2;
int Set_Frame(int frame);
} OBJECT4DV2, *OBJECT4DV2_PTR;
And the problem is that i dont know how to get data from the interface to my object structure.
Help me please, i''m going mad 
Thank you
Kev
Thank you
Kev
