XMU555::XMU555(float,float,float,bool) function (directxpackedvector.h)

Initializes a new instance of XMU555 from three float and one bool arguments.

This constructor initializes a new instance of XMU555 from three float (specifying x-, y-, and z-components) and one bool (specifying the w-component) arguments.

Syntax

void XMU555(
  float _x,
  float _y,
  float _z,
  bool  _w
) noexcept;

Parameters

_x

Value of the x-coordinate of the vector, the x member of the new XMU555 instance.

The magnitude of this argument will be clamped to a range of [0, 31.0].

_y

Value of the y-coordinate of the vector, the y member of the new XMU555 instance.

The magnitude of this argument will be clamped to a range of [0, 31.0].

_z

Value of the z-coordinate of the vector, the z member of the new XMU555 instance.

The magnitude of this argument will be clamped to a range of [0, 31.0].

_w

Value of the w-coordinate of the vector, the w member of the new XMU555 instance.

The magnitude of this argument will be clamped to a range of [0, 1].

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 XMU555 vector with an instance of uint16_t in the definition of the structure:

	_x1=min( max( _x, 0.0 ), 31.0 );
	_y1=min( max( _y, 0.0 ), 31.0 );
	_z1=min( max( _z, 0.0 ), 31.0 );
	_w1=min( max( _w, 0 ), 1 );

	instance.v =  (((uint16_t)_w1 ? 0x8000 : 0) |
                      (((uint16_t)_z1 & 0x1F) << 10) |
                      (((uint16_t)_y1 & 0x1F) << 5) |  
		      (((uint16_t)_x1 & 0x1F)));
	

Requirements

See also

Reference

XMU555

XMU555 Constructors