D3DMXMATRIX
A version of this page is also available for
4/8/2010
This structure describes a matrix and its operators for floating point numbers.
Syntax
typedef struct D3DMXMATRIX {
#ifdef __cplusplus
public:
D3DMXMATRIX() {};
D3DMXMATRIX( CONST FLOAT * );
D3DMXMATRIX( CONST D3DMMATRIX& );
D3DMXMATRIX( FLOAT _11, FLOAT _12, FLOAT _13, FLOAT _14,
FLOAT _21, FLOAT _22, FLOAT _23, FLOAT _24,
FLOAT _31, FLOAT _32, FLOAT _33, FLOAT _34,
FLOAT _41, FLOAT _42, FLOAT _43, FLOAT _44 );
// access grants
FLOAT& operator () ( UINT Row, UINT Col );
FLOAT operator () ( UINT Row, UINT Col ) const;
// casting operators
operator FLOAT* ();
operator CONST FLOAT* () const;
// assignment operators
D3DMXMATRIX& operator *= ( CONST D3DMXMATRIX& );
D3DMXMATRIX& operator += ( CONST D3DMXMATRIX& );
D3DMXMATRIX& operator -= ( CONST D3DMXMATRIX& );
D3DMXMATRIX& operator *= ( FLOAT );
D3DMXMATRIX& operator /= ( FLOAT );
// unary operators
D3DMXMATRIX operator + () const;
D3DMXMATRIX operator - () const;
// binary operators
D3DMXMATRIX operator * ( CONST D3DMXMATRIX& ) const;
D3DMXMATRIX operator + ( CONST D3DMXMATRIX& ) const;
D3DMXMATRIX operator - ( CONST D3DMXMATRIX& ) const;
D3DMXMATRIX operator * ( FLOAT ) const;
D3DMXMATRIX operator / ( FLOAT ) const;
friend D3DMXMATRIX operator * ( FLOAT, CONST D3DMXMATRIX& );
BOOL operator == ( CONST D3DMXMATRIX& ) const;
BOOL operator != ( CONST D3DMXMATRIX& ) const;
#endif //__cplusplus
union {
struct {
FLOAT _11, _12, _13, _14;
FLOAT _21, _22, _23, _24;
FLOAT _31, _32, _33, _34;
FLOAT _41, _42, _43, _44;
};
FLOAT m[4][4];
};
} D3DMXMATRIX, *LPD3DMXMATRIX;
Members
- _11, _12, ... , _44and m[ i][ j]
The members of the structure are the floating 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 |