mbc_test()

static void mbc_test ( LWGEOM *  g )

static

Definition at line 16 of file cu_minimum_bounding_circle.c.

References LWBOUNDINGCIRCLE::center, distance2d_pt_pt(), lwboundingcircle_destroy(), lwgeom_calculate_mbc(), lwpointiterator_create(), lwpointiterator_destroy(), lwpointiterator_next(), POINT2D::x, POINT4D::x, POINT2D::y, and POINT4D::y.

Referenced by basic_test().

{
        LWBOUNDINGCIRCLE* result = lwgeom_calculate_mbc(g);
        CU_ASSERT_TRUE(result != NULL);

        LWPOINTITERATOR* it = lwpointiterator_create(g);

        POINT2D p;
        POINT4D p4;
        while (lwpointiterator_next(it, &p4))
        {
                p.x = p4.x;
                p.y = p4.y;

                /* We need to store the distance in a variable before the assert so that
                 * it is rounded from its 80-bit representation (on x86) down to 64 bits.
                 * */
                volatile double d = distance2d_pt_pt(result->center, &p);

                CU_ASSERT_TRUE(d <= result->radius);
        }

        lwboundingcircle_destroy(result);
        lwpointiterator_destroy(it);
}

Here is the call graph for this function:

Here is the caller graph for this function: