test_ptarray_closest_segment_2d()

static void test_ptarray_closest_segment_2d ( )

static

Definition at line 688 of file cu_ptarray.c.

{
        LWLINE *line;
        POINTARRAY *pa;
        double dist;
        POINT2D qp;
        const char *wkt;
        int rv;
 
        wkt = "LINESTRING (0 0 0, 1 0 0, 2 0 0, 3 0 10)";
        line = lwgeom_as_lwline(lwgeom_from_text(wkt));
        pa = line->points;
 
        qp.x = qp.y = 0;
        rv = ptarray_closest_segment_2d(pa, &qp, &dist);
        ASSERT_INT_EQUAL(rv, 0);
        ASSERT_DOUBLE_EQUAL(dist, 0);
 
        qp.x = 1;
        rv = ptarray_closest_segment_2d(pa, &qp, &dist);
        ASSERT_INT_EQUAL(rv, 0);
        ASSERT_DOUBLE_EQUAL(dist, 0);
 
        qp.y = 1;
        rv = ptarray_closest_segment_2d(pa, &qp, &dist);
        ASSERT_INT_EQUAL(rv, 0);
        ASSERT_DOUBLE_EQUAL(dist, 1);
 
        qp.x = 5; qp.y = 0;
        rv = ptarray_closest_segment_2d(pa, &qp, &dist);
        ASSERT_INT_EQUAL(rv, 2);
        ASSERT_DOUBLE_EQUAL(dist, 2);
 
 
        lwline_free(line);
 
        /* See https://trac.osgeo.org/postgis/ticket/4990 */
        /* Test modified to give more stable results */
        wkt = "LINESTRING(4 31,7 31,7 34,4 34,4 31)";
        line = lwgeom_as_lwline(lwgeom_from_text(wkt));
        pa = line->points;
        qp.x = 7.1; qp.y = 31.1;
        rv = ptarray_closest_segment_2d(pa, &qp, &dist);
        ASSERT_INT_EQUAL(rv, 1);
        lwline_free(line);
}

References ASSERT_DOUBLE_EQUAL, ASSERT_INT_EQUAL, lwgeom_as_lwline(), lwgeom_from_text(), lwline_free(), LWLINE::points, ptarray_closest_segment_2d(), POINT2D::x, and POINT2D::y.

Referenced by ptarray_suite_setup().

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