XMUNIBBLE4::XMUNIBBLE4(float,float,float,float) function (directxpackedvector.h)

Initializes a new instance of XMUNIBBLE4 from four float arguments.

This constructor initializes a new instance of XMUNIBBLE4 from four float arguments.

Note  This constructor is only available under C++.

 

Syntax

void XMUNIBBLE4(
  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 XMUNIBBLE4 instance.

The magnitude of this argument will be clamped to a range of [0, 15.0].

_y

Value of the y-coordinate of the vector, the y member of the new XMUNIBBLE4 instance.

The magnitude of this argument will be clamped to a range of [0, 15.0].

_z

Value of the z-coordinate of the vector, the z member of the new XMUNIBBLE4 instance.

The magnitude of this argument will be clamped to a range of [0, 15.0].

_w

Value of the w-coordinate of the vector, the w member of the new XMUNIBBLE4 instance.

The magnitude of this argument will be clamped to a range of [0, 15.0].

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 XMUNIBBLE4 vector with an instance of uint16_t in the definition of the structure:

	XMUNIBBLE4 instance;
	_x1=min( max( _x, 0.0 ), 15.0f );
	_y1=min( max( _y, 0.0 ), 15.0f );
	_z1=min( max( _z, 0.0 ), 15.0f );
	_w1=min( max( _w, 0.0 ), 15.0f );

	instance.v =  ( (uint16_t)_w1 << 12) |
                      (((uint16_t)_z1 & 0xF) << 8) |
                      (((uint16_t)_y1 & 0xF) << 4) |
                      (((uint16_t)_x1 & 0xF));
      

Requirements

Requirement	Value
Target Platform	Windows
Header	directxpackedvector.h

See also

Reference

XMUNIBBLE4

XMUNIBBLE4 Constructors