cross_product_f man page on DragonFly

cross_product_f man page on DragonFly

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cross_product(3)		Allegro manual		      cross_product(3)

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 nor‐
       mals.

SEE ALSO
       dot_product(3), polygon_z_normal(3), normalize_vector(3), exstars(3)

Allegro				 version 4.4.2		      cross_product(3)

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