get_3dcross_product()

static int get_3dcross_product ( VECTOR3D *  v1, VECTOR3D *  v2, VECTOR3D *  v  )

inlinestatic

Definition at line 55 of file measures3d.c.

{
        v->x=(v1->y*v2->z)-(v1->z*v2->y);
        v->y=(v1->z*v2->x)-(v1->x*v2->z);
        v->z=(v1->x*v2->y)-(v1->y*v2->x);
 
        return (!FP_IS_ZERO(v->x) || !FP_IS_ZERO(v->y) || !FP_IS_ZERO(v->z));
}

References FP_IS_ZERO, VECTOR3D::x, VECTOR3D::y, and VECTOR3D::z.

Referenced by define_plane().

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