XMXDEC4::XMXDEC4(float,float,float,float) function (directxpackedvector.h)
Initializes a new instance of XMXDEC4 from four float arguments.
This constructor initializes a new instance of XMXDEC4 from four
float arguments.
Syntax
void XMXDEC4(
float _x,
float _y,
float _z,
float _w
) noexcept;
Parameters
_x
Value of the x-coordinate of the vector, the x member of the new
XMXDEC4 instance.
The magnitude of this argument will be clamped to a range of [-511.0, 511.0].
_y
Value of the y-coordinate of the vector, the y member of the new
XMXDEC4 instance.
The magnitude of this argument will be clamped to a range of [-511.0, 511.0].
_z
Value of the z-coordinate of the vector, the z member of the new
XMXDEC4 instance.
The magnitude of this argument will be clamped to a range of [-511.0, 511.0].
_w
Value of the w-coordinate of the vector, the w member of the new
XMXDEC4 instance.
The magnitude of this argument will be clamped to a range of [0.0, 3.0].
Return value
None
Remarks
The following pseudocode demonstrates the operation of this constructor, which takes
advantage of the union of the four components of the XMXDEC4 vector with an instance of uint32_t in the definition of the structure:
XMXDEC4 instance;
_x1=min( max( _x, -511.0 ), 511.0 );
_y1=min( max( _y, -511.0 ), 511.0 );
_z1=min( max( _z, -511.0 ), 511.0 );
_w1=min( max( _w, 0.0 ), 3.0 );
instance.v = ( (int32_t)_w1 << 30) |
(((int32_t)_z1 & 0x3FF) << 20) |
(((int32_t)_y1 & 0x3FF) << 10) |
(((uint32_t)_x1 & 0x3FF));;
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | directxpackedvector.h |
See also
Reference