D3DMXMATRIXFXD

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This structure describes a matrix and its operators for fixed point numbers.

Syntax

typedef struct D3DMXMATRIXFXD {
#ifdef __cplusplus
  public:
    D3DMXMATRIXFXD() {};
    D3DMXMATRIXFXD( CONST FIXED * );
    D3DMXMATRIXFXD( CONST D3DMMATRIX& );
    D3DMXMATRIXFXD( FIXED _11, FIXED _12, FIXED _13, FIXED _14,
                    FIXED _21, FIXED _22, FIXED _23, FIXED _24,
                    FIXED _31, FIXED _32, FIXED _33, FIXED _34,
                    FIXED _41, FIXED _42, FIXED _43, FIXED _44 );
    // access grants
    FIXED& operator () ( UINT Row, UINT Col );
    FIXED  operator () ( UINT Row, UINT Col ) const;
    // casting operators
    operator FIXED* ();
    operator CONST FIXED* () const;
    // assignment operators
    D3DMXMATRIXFXD& operator *= ( CONST D3DMXMATRIXFXD& );
    D3DMXMATRIXFXD& operator += ( CONST D3DMXMATRIXFXD& );
    D3DMXMATRIXFXD& operator -= ( CONST D3DMXMATRIXFXD& );
    D3DMXMATRIXFXD& operator *= ( FIXED );
    D3DMXMATRIXFXD& operator /= ( FIXED );
    // unary operators
    D3DMXMATRIXFXD operator + () const;
    D3DMXMATRIXFXD operator - () const;
    // binary operators
    D3DMXMATRIXFXD operator * ( CONST D3DMXMATRIXFXD& ) const;
    D3DMXMATRIXFXD operator + ( CONST D3DMXMATRIXFXD& ) const;
    D3DMXMATRIXFXD operator - ( CONST D3DMXMATRIXFXD& ) const;
    D3DMXMATRIXFXD operator * ( FIXED ) const;
    D3DMXMATRIXFXD operator / ( FIXED ) const;
    friend D3DMXMATRIXFXD operator * ( FIXED, CONST D3DMXMATRIXFXD& );
    BOOL operator == ( CONST D3DMXMATRIXFXD& ) const;
    BOOL operator != ( CONST D3DMXMATRIXFXD& ) const;
#endif //__cplusplus
  union {
      struct {
          FIXED   _11, _12, _13, _14;
          FIXED   _21, _22, _23, _24;
          FIXED   _31, _32, _33, _34;
          FIXED   _41, _42, _43, _44;
      };
      FIXED m[4][4];
  };
} D3DMXMATRIXFXD, *LPD3DMXMATRIXFXD;

Members

• _11, _12, ... , _44and m[ i][ j]
  The members of the structure are the fixed point values that make up the elements of a 4x4 matrix.

Remarks

In Direct3D Mobile extensions (D3DMX), the _34 element of a projection matrix cannot be a negative number. If your application needs to use a negative value in this location, it should scale the entire projection matrix by -1, instead.

C++ programmers can take advantage of operator overloading and type casting.

Requirements

See Also

Reference

D3DMX Structures
D3DMXMATRIX