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C-/C++-Quelltext

HRESULT simplifyMesh(const float fSimplifyMeshFactor)
{
    HRESULT                 hr;

    LPD3DXMESH              pTmpMesh;
// D3DFVF_MESHVERTEX == xyz | normal


    hr = this->m_pMesh->CloneMeshFVF(D3DXMESH_SYSTEMMEM, D3DFVF_MESHVERTEX, 
        this->m_pDevice, 
        &pTmpMesh);


//  memcpy(&pTmpMesh, &this->m_pMesh, sizeof(this->m_pMesh));



    D3DXATTRIBUTEWEIGHTS    d3daw;
    ZeroMemory(&d3daw, sizeof(D3DXATTRIBUTEWEIGHTS));
    d3daw.Position          = 1.0f;
    //d3daw.Boundary            = 10000.0f;

    d3daw.Normal            = 1.0f;

    DWORD* pdwAdjaceny      = NULL;
    
    pdwAdjaceny             = new DWORD[3* pTmpMesh->GetNumFaces()];
    if (pdwAdjaceny == NULL)
    {
        return E_OUTOFMEMORY;
    }
    hr                      = pTmpMesh->GenerateAdjacency(0.01f, pdwAdjaceny);
    if (FAILED(hr))
        return hr;

    DWORD* pdwAdjacenyOut   = NULL;
    
    pdwAdjacenyOut          = new DWORD[3* pTmpMesh->GetNumFaces()];
    if (pdwAdjaceny == NULL)
    {
        return E_OUTOFMEMORY;
    }

    DWORD dwFlags           = D3DXMESHOPT_VERTEXCACHE | D3DXMESHOPT_COMPACT;
    hr                      = pTmpMesh->OptimizeInplace(dwFlags, pdwAdjaceny, pdwAdjacenyOut, NULL, NULL);
    if (FAILED(hr))
    {
        return hr;
    }

    SAFE_DELETE_ARRAY(pdwAdjaceny);
    pdwAdjaceny             = pdwAdjacenyOut;

    hr                      = D3DXSimplifyMesh(pTmpMesh, pdwAdjaceny, &d3daw, NULL,
        (DWORD)(pTmpMesh->GetNumFaces() * fSimplifyMeshFactor), D3DXMESHSIMP_FACE, &this->m_pSimplifiedMesh);

    if (hr == E_OUTOFMEMORY)
        return E_OUTOFMEMORY;
    else if (hr == D3DXERR_INVALIDDATA)
        return D3DXERR_INVALIDDATA;
    else if (hr == D3DERR_INVALIDCALL)
        return D3DERR_INVALIDCALL;
    else if (hr == D3DXERR_INVALIDMESH)
        return D3DXERR_INVALIDMESH;

    SAFE_DELETE_ARRAY(pdwAdjaceny);

    assert(pTmpMesh != NULL);
    assert(this->m_pSimplifiedMesh != NULL);

    return hr;

C-/C++-Quelltext

LPD3DXMESH tmptmpMesh = NULL; 
    hr = D3DXCleanMesh(D3DXCLEAN_SIMPLIFICATION, this->m_pMesh, pdwAdjacenyOut, &tmptmpMesh, pdwAdjacenyOut, NULL );
    if (FAILED(hr))
        return hr;

    SAFE_DELETE_ARRAY(pdwAdjaceny);
    pdwAdjaceny             = pdwAdjacenyOut;

    hr                      = D3DXSimplifyMesh(this->m_pMesh, 
        pdwAdjaceny, 
        &d3daw, 
        NULL,
        (DWORD)(this->m_pMesh->GetNumFaces() * fSimplifyMeshFactor), 
        D3DXMESHSIMP_FACE, 
        &this->m_pSimplifiedMesh);