public static Matrix44D CreatePerspective(
	double width,
	double height,
	double zNear,
	double zFar
)

Public Shared Function CreatePerspective ( 
	width As Double,
	height As Double,
	zNear As Double,
	zFar As Double
) As Matrix44D

public:
static Matrix44D CreatePerspective(
	double width, 
	double height, 
	double zNear, 
	double zFar
)

static member CreatePerspective : 
        width : float * 
        height : float * 
        zNear : float * 
        zFar : float -> Matrix44D 

Parameters

width

Type: SystemDouble
The width of the view volume at the near view-plane.

height

Type: SystemDouble
The height of the view volume at the near view-plane.

zNear

Type: SystemDouble
The minimum z-value of the view volume. (Distance of the near view plane.)

zFar

Type: SystemDouble
The maximum z-value of the view volume. (Distance of the far view plane.)

Return Value

This method is available only in the XNA-compatible build of the DigitalRune.Mathematics.dll.

In contrast to all preceding coordinate spaces (model space, world space, view space) the projection space is left-handed! This is necessary because DirectX uses a left-handed clip space.

In the projection space the x and y-coordinates range from −1 to 1, and the z-coordinates range from 0 (near) to 1 (far).

Infinite Projections:
zFar can be set to PositiveInfinity to create an infinite projection where the far clip plane is at infinity.

Reference