(PHP 4 >= 4.0.0)
swf_lookat -- Define a viewing transformation
Description
void swf_lookat (float view_x, float view_y, float view_z, float
reference_x, float reference_y, float reference_z, float 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.
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