# Matrix.OrthoOffCenterLH(Single,Single,Single,Single,Single,Single) Method (Microsoft.DirectX)

Builds a customized, left-handed orthogonal projection matrix.

Definition

Visual Basic Public Shared Function OrthoOffCenterLH( _    ByVal left As Single, _    ByVal right As Single, _    ByVal bottom As Single, _    ByVal top As Single, _    ByVal znearPlane As Single, _    ByVal zfarPlane As Single _) As Matrix public static Matrix OrthoOffCenterLH(    float left,    float right,    float bottom,    float top,    float znearPlane,    float zfarPlane); public: static Matrix OrthoOffCenterLH(    float left,    float right,    float bottom,    float top,    float znearPlane,    float zfarPlane); public static function OrthoOffCenterLH(    left : float,    right : float,    bottom : float,    top : float,    znearPlane : float,    zfarPlane : float) : Matrix;

Parameters

 left System.Single Minimum x-value of the view volume. right System.Single Maximum x-value of the view volume. bottom System.Single Minimum y-value of the view volume. top System.Single Maximum y-value of the view volume. znearPlane System.Single Minimum z-value of the view volume. zfarPlane System.Single Maximum z-value of the view volume.

Return Value

Microsoft.DirectX.Matrix
A Matrix structure that is a customized, left-handed orthogonal projection matrix.

Remarks

An orthogonal matrix is an invertible matrix for which the inverse is equal to the transpose.

The OrthoLH method is a special case of the OrthoOffCenterLH method. To create the same projection using OrthoOffCenterLH, use the following values: left = -width/2, right = width/2, bottom = -height/2, and top = height/2.

All of the parameters of the OrthoOffCenterLH method are distances in camera space. The parameters describe the dimensions of the view volume.

This method uses the following formula to compute the returned matrix.


2/(right-l)           0                         0                                  0
0                     2/(top-bottom)            0                                  0
0                     0                         1/(zfarPlane-znearPlane)           0
(l+right)/(l-right)  (top+bottom)/(bottom-top)  znearPlane/(znearPlane-zfarPlane)  1