test_vector_angle()

static void test_vector_angle ( void  )

static

Definition at line 1465 of file cu_geodetic.c.

References normalize(), vector_angle(), POINT3D::x, POINT3D::y, and POINT3D::z.

Referenced by geodetic_suite_setup().

{
        POINT3D p1, p2;
        double angle;

        memset(&p1, 0, sizeof(POINT3D));
        memset(&p2, 0, sizeof(POINT3D));

        p1.x = 1.0;
        p2.y = 1.0;
        angle = vector_angle(&p1, &p2);
        CU_ASSERT_DOUBLE_EQUAL(angle, M_PI_2, 0.00001);

        p1.x = p2.y = 0.0;
        p1.y = 1.0;
        p2.x = 1.0;
        angle = vector_angle(&p1, &p2);
        CU_ASSERT_DOUBLE_EQUAL(angle, M_PI_2, 0.00001);

        p2.y = p2.x = 1.0;
        normalize(&p2);
        angle = vector_angle(&p1, &p2);
        CU_ASSERT_DOUBLE_EQUAL(angle, M_PI_4, 0.00001);

        p2.x = p2.y = p2.z = 1.0;
        normalize(&p2);
        angle = vector_angle(&p1, &p2);
        CU_ASSERT_DOUBLE_EQUAL(angle, 0.955317, 0.00001);
        //printf ("angle = %g\n\n", angle);
}

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