NAME

       cross_product, cross_product_f - Calculates the cross product. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       void cross_product(fixed x1, y1, z1, x2, y2, z2, *xout, *yout, *zout);

       void cross_product_f(float x1, y1, z1, x2, y2, z2, *xout, *yout, *zout);

DESCRIPTION

       Calculates  the  cross  product (x1, y1, z1) x (x2, y2, z2), storing the result in (*xout, *yout, *zout).
       The cross product is perpendicular to both of the input vectors, so it can be used  to  generate  polygon
       normals.

SEE ALSO

       dot_product(3alleg4), polygon_z_normal(3alleg4), normalize_vector(3alleg4), exstars(3alleg4)