DXBNDS structure
Describes either a continuous or a discrete boundary for a transform object.
Syntax
typedef struct DXBNDS {
DXBNDTYPE eType;
union {
DXDBND D[4];
DXDBND64 LD[4];
DXCBND C[4];
DXCBND64 LC[4];
} u;
} DXBNDS;
Members
eType
Member of the DXBNDTYPE enumeration, describing which member of the union to use.u
Union of the structures that can be used to describe a boundary. This can contain one of the following structures.D
Array of DXDBND discrete bounds, containing 32-bit long minimum and maximum values.LD
Array of DXDBND64 discrete bounds, containing 64-bit LONGLONG minimum and maximum values.C
Array of DXCBND continuous bounds, containing 32-bit float minimum and maximum values.LC
Array of DXCBND64 continuous bounds, containing 64-bit double minimum and maximum values.
Remarks
The value of eType member determines which member of the union is used. The following table shows the value of the eType and the corresponding member of the union.
| Value of eType | Union member |
|---|---|
| DXBT_DISCRETE | D |
| DXBT_DISCRETE64 | LD |
| DXBT_CONTINUOUS | C |
| DXBT_CONTINUOUS64 | LC |
You should never have to use this union directly. Instead, it is used by the CDXBnds template class (found in DXBounds.h) to create and manipulate image boundary objects. The most commonly used boundary object is the discrete CDXDBnds object.
The four members of this continuous or discrete array consist of an x-dimension, y-dimension, z-dimension, and t-dimension (time). Specify a minimum value of zero and a maximum value of one for any dimensions you use. For example, you can set the z-dimension and t-dimension this way for a 2-D image. If you use the CDXBnds template class, proper initialization is done for you.
The time dimension is intended for special data types, such as video or Graphics Interchange Format (GIF) animations.
Requirements
Minimum supported client |
Windows XP |
Minimum supported server |
Windows 2000 Server |
Header |
Dxtrans.h |
IDL |
Dxtrans.idl |
See also
Reference