swf_perspective
(PHP 4)
swf_perspective — Define a perspective projection transformation
说明
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.
参数
- 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.
返回值
无返回值。
