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

Header	d3dmx.h
Windows Embedded CE	Windows Embedded CE 6.0 and later
Windows Mobile	Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later

See Also

Reference

D3DMX Structures
D3DMXMATRIX