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.

Note  This constructor is only available under C++.

 

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

XMXDEC4

XMXDEC4 Constructors