mbc_test()

static void mbc_test ( LWGEOM *  g )

static

Definition at line 16 of file cu_minimum_bounding_circle.c.

{
        LWBOUNDINGCIRCLE* result = lwgeom_calculate_mbc(g);
        CU_ASSERT_TRUE(result != NULL);
 
        LWPOINTITERATOR* it = lwpointiterator_create(g);
 
        POINT2D p;
        POINT4D p4;
        char *msg1 = "mbc_test failed (got %.12f should be less than radius %.12f) \n";
        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);
                if ( (d - result->radius) > 0.0000001  )
                {
                        printf(msg1, d, result->radius);
                        CU_FAIL();
                }
                else
                {
                        CU_PASS();
                }
        }
 
        lwboundingcircle_destroy(result);
        lwpointiterator_destroy(it);
}

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

Referenced by basic_test().

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