cross_product - Man Page

Calculates the cross product. Allegro game programming library.


#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);


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(3), polygon_z_normal(3), normalize_vector(3), exstars(3)

Referenced By

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

The man page cross_product_f(3) is an alias of cross_product(3).

version 4.4.3 Allegro manual