get_3dcross_product()

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

inlinestatic

Definition at line 44 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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