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.