Directx 向量

D3DXVECTOR  u(1.0f , 0.0f , 1.0f);
D3DXVECTOR  v(0.0f , 1.0f , 0.0f);
if(u==v) return true;
///
D3DXVECTOR3  u(2.0f,0.0f,1.0f);
D3DXVECTOR3  v(0.0f,-1.0f,5.0f);
D3DXVECTOR3 sum=u+v;
D3DXVECTOR3 difference=u-v;
D3DXVECTOR3 scaledVec=u*10.0f;
float dot=D3DXVec3Dot(&u,&v);            //点积
 
//叉积
D3DXVECTOR3 *D3DXVec3Cross( 
    D3DXVECTOR3 *pOut,
    CONST D3DXVECTOR3  *pV1, 
    CONST D3DXVECTOR3  *pV2);