# swf_perspective

(PHP 4)

swf_perspective — Define a perspective projection transformation

### Description

void swf_perspective ( float `$fovy` , float `$aspect` , float `$near` , float `$far` )

Defines a perspective projection transformation.

> Note: Various distortion artifacts may appear when performing a perspective projection, this is because Flash players only have a two dimensional matrix. Some are not to pretty.

### Parameters

`fovy`

  A field-of-view angle in the y direction.

`aspect`

  The aspect ratio of the viewport that is being drawn onto.

`near`

  The near clipping plane.

`far`

  The far clipping plane.

### Return Values

No value is returned.