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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。


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