test_lw_dist2d_ptarray_ptarrayarc()

static void test_lw_dist2d_ptarray_ptarrayarc ( void  )

static

Definition at line 995 of file cu_measures.c.

References cu_error_msg, cu_error_msg_reset(), DIST_MIN, DISTPTS::distance, lw_dist2d_distpts_init(), lw_dist2d_ptarray_ptarrayarc(), LW_FAILURE, LW_SUCCESS, lwgeom_as_lwline(), lwgeom_from_text(), lwline_free(), and LWLINE::points.

Referenced by measures_suite_setup().

{
        /* int lw_dist2d_ptarray_ptarrayarc(const POINTARRAY *pa, const POINTARRAY *pb, DISTPTS *dl) */
        DISTPTS dl;
        int rv;
        LWLINE *lwline1;
        LWLINE *lwline2;

        /* Unit semi-circle above X axis */
        lwline1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 0, 0 1, 1 0)"));

        /* Line above top of semi-circle */
        lwline2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-2 2, -1 2, 1 2, 2 2)"));
        lw_dist2d_distpts_init(&dl, DIST_MIN);
        rv = lw_dist2d_ptarray_ptarrayarc(lwline2->points, lwline1->points, &dl);
        CU_ASSERT_EQUAL( rv, LW_SUCCESS );
        CU_ASSERT_DOUBLE_EQUAL(dl.distance, 1, 0.000001);

        /* Reversed arguments, should fail */
        lw_dist2d_distpts_init(&dl, DIST_MIN);
        cu_error_msg_reset();
        rv = lw_dist2d_ptarray_ptarrayarc(lwline1->points, lwline2->points, &dl);
        //printf("%s\n", cu_error_msg);
        CU_ASSERT_EQUAL( rv, LW_FAILURE );
        CU_ASSERT_STRING_EQUAL("lw_dist2d_ptarray_ptarrayarc called with non-arc input", cu_error_msg);

        lwline_free(lwline2);

        /* Line along side of semi-circle */
        lwline2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-2 -3, -2 -2, -2 2, -2 3)"));
        lw_dist2d_distpts_init(&dl, DIST_MIN);
        rv = lw_dist2d_ptarray_ptarrayarc(lwline2->points, lwline1->points, &dl);
        CU_ASSERT_EQUAL( rv, LW_SUCCESS );
        CU_ASSERT_DOUBLE_EQUAL(dl.distance, 1, 0.000001);

        /* Four unit semi-circles surrounding the 2x2 box around origin */
        lwline_free(lwline1);
        lwline_free(lwline2);
        lwline1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 -1, -2 0, -1 1, 0 2, 1 1, 2 0, 1 -1, 0 -2, -1 -1)"));
        lwline2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-2.5 -3, -2.5 -2, -2.5 2, -2.5 3)"));
        rv = lw_dist2d_ptarray_ptarrayarc(lwline2->points, lwline1->points, &dl);
        CU_ASSERT_EQUAL( rv, LW_SUCCESS );
        CU_ASSERT_DOUBLE_EQUAL(dl.distance, 0.5, 0.000001);

        lwline_free(lwline2);
        lwline_free(lwline1);
}

Here is the call graph for this function:

Here is the caller graph for this function: