Article
11/17/2011

Matrix.CreateOrthographic Method (Single, Single, Single, Single)

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Builds an orthogonal projection matrix.

Namespace: Microsoft.Xna.Framework
Assembly: Microsoft.Xna.Framework.Math (in Microsoft.Xna.Framework.Math.dll)

Syntax

'Declaration
Public Shared Function CreateOrthographic ( _
    width As Single, _
    height As Single, _
    zNearPlane As Single, _
    zFarPlane As Single _
) As Matrix

public static Matrix CreateOrthographic(
    float width,
    float height,
    float zNearPlane,
    float zFarPlane
)

Parameters

width
Type: System.Single
Width of the view volume.

height
Type: System.Single
Height of the view volume.

zNearPlane
Type: System.Single
Minimum z-value of the view volume.

zFarPlane
Type: System.Single
Maximum z-value of the view volume.

Return Value

Type: Microsoft.Xna.Framework.Matrix
The projection matrix.

Remarks

Projection space refers to the space after applying projection transformation from view space. After the projection transformation, visible content has x and y coordinates ranging from -1 to 1, and z coordinates ranging from 0 to 1.

Unlike perspective projection, in orthographic projection there is no perspective foreshortening.

The viewable area of this orthographic projection is centered on 0,0,0. The x-axis of the area ranges from -width/2 to width/2. The y-axis of the area ranges from -height/2 to height/2. The z-axis of the area ranges from zNearPlane to zFarPlane. These values are relative to the position and x, y, and z-axes of the view.

To obtain the viewable area (in world space) of a scene, create a BoundingFrustum and pass the combined view and projection matrix to the constructor.

Version Information

Silverlight

Supported in: 5

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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