swf_lookat

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.