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 re- sult 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) Allegro version 4.4.3 cross_product(3)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO
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