swf_lookat
(PHP 4)
swf_lookat — Define a viewing transformation
说明
void swf_lookat
( float $view_x
, float $view_y
, float $view_z
, float $reference_x
, float $reference_y
, float $reference_z
, float $twist
)
Defines a viewing transformation by giving the viewing position and the coordinates of a reference point in the scene.
参数
- view_x
-
x-coordinate for the viewing position
- view_y
-
y-coordinate for the viewing position
- view_z
-
z-coordinate for the viewing position
- reference_x
-
x-coordinate for the reference point
- reference_y
-
y-coordinate for the reference point
- reference_z
-
z-coordinate for the reference point
- twist
-
Controls the rotation along with viewer's z axis.
返回值
无返回值。
