swf_lookat

(PHP 4)

swf_lookat — Define a viewing transformation

Description

void swf_lookat ( double $view_x , double $view_y , double $view_z , double $reference_x , double $reference_y , double $reference_z , double $twist )

The swf_lookat() function defines a viewing transformation by giving the viewing position (the parameters view_x , view_y , and view_z ) and the coordinates of a reference point in the scene, the reference point is defined by the reference_x , reference_y , and reference_z parameters. The twist controls the rotation along with viewer's z axis.