public static Matrix44F CreatePerspectiveOffCenter(
	float left,
	float right,
	float bottom,
	float top,
	float zNear,
	float zFar
)

Public Shared Function CreatePerspectiveOffCenter ( 
	left As Single,
	right As Single,
	bottom As Single,
	top As Single,
	zNear As Single,
	zFar As Single
) As Matrix44F

public:
static Matrix44F CreatePerspectiveOffCenter(
	float left, 
	float right, 
	float bottom, 
	float top, 
	float zNear, 
	float zFar
)

static member CreatePerspectiveOffCenter : 
        left : float32 * 
        right : float32 * 
        bottom : float32 * 
        top : float32 * 
        zNear : float32 * 
        zFar : float32 -> Matrix44F 

Parameters

left

Type: SystemSingle
The minimum x-value of the view volume at the near view plane.

right

Type: SystemSingle
The maximum x-value of the view volume at the near view plane.

bottom

Type: SystemSingle
The minimum y-value of the view volume at the near view plane.

top

Type: SystemSingle
The maximum y-value of the view volume at the near view plane.

zNear

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

zFar

Type: SystemSingle
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