//建立并设置世界矩阵

D3DXMATRIX matWorld

　　D3DXMatrixIdentity( &matWorld )

g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld )



　　//建立并设置观察矩阵

D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-5.0f )

D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f )

D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f )

D3DXMATRIX matView

D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec )

g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView )



//建立并设置投影矩阵

D3DXMATRIX matProj

D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f )

g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj ) -//Create and set the world matrix D3DXMATRIX matWorld D3DXMatrixIdentity (