Class XMMath

Constants and functions provided by XMMath.

Inheritance

object

XMMath

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: JeremyAnsel.DirectX.DXMath

Assembly: JeremyAnsel.DirectX.DXMath.dll

Syntax

public static class XMMath

Fields

OneDivPI

An optimal representation of 1/π.

Declaration

public const float OneDivPI = 0.31830987

Field Value

Type	Description
float

OneDivTwoPI

An optimal representation of 2/π.

Declaration

public const float OneDivTwoPI = 0.15915494

Field Value

Type	Description
float

PI

An optimal representation of π.

Declaration

public const float PI = 3.1415927

Field Value

Type	Description
float

PIDivFour

An optimal representation of π/4.

Declaration

public const float PIDivFour = 0.7853982

Field Value

Type	Description
float

PIDivTwo

An optimal representation of π/2.

Declaration

public const float PIDivTwo = 1.5707964

Field Value

Type	Description
float

TwoPI

An optimal representation of 2*π.

Declaration

public const float TwoPI = 6.2831855

Field Value

Type	Description
float

Methods

ConvertToDegrees(float)

Converts an angle measured in radians into one measured in degrees.

Declaration

public static float ConvertToDegrees(float radians)

Parameters

Type	Name	Description
float	radians	Size of an angle in radians.

Returns

Type	Description
float	Size of the angle in degrees.

ConvertToRadians(float)

Converts an angle measured in degrees into one measured in radians.

Declaration

public static float ConvertToRadians(float degrees)

Parameters

Type	Name	Description
float	degrees	Size of an angle in degrees.

Returns

Type	Description
float	Size of the angle in radians.

FresnelTerm(XMVector, XMVector)

Calculates the Fresnel term for unpolarized light.

Declaration

public static XMVector FresnelTerm(XMVector cosIncidentAngle, XMVector refractionIndex)

Parameters

Type	Name	Description
XMVector	cosIncidentAngle	Vector consisting of the cosines of the incident angles.
XMVector	refractionIndex	Vector consisting of the refraction indices of the materials corresponding to the incident angles.

Returns

Type	Description
XMVector	Returns a vector containing the Fresnel term of each component.