test_ptarray_contains_point()

static void test_ptarray_contains_point ( )

static

Definition at line 463 of file cu_ptarray.c.

References LW_BOUNDARY, LW_INSIDE, LW_OUTSIDE, lwgeom_as_lwline(), lwgeom_from_text(), lwline_free(), LWLINE::points, ptarray_contains_point(), POINT2D::x, and POINT2D::y.

Referenced by ptarray_suite_setup().

{
/* int ptarray_contains_point(const POINTARRAY *pa, const POINT2D *pt, int *winding_number) */

        LWLINE *lwline;
        POINTARRAY *pa;
        POINT2D pt;
        int rv;

        lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0, 0 1, 1 1, 1 0, 0 0)"));
        pa = lwline->points;

        /* Point in middle of square */
        pt.x = 0.5;
        pt.y = 0.5;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_INSIDE);

        /* Point on left edge of square */
        pt.x = 0;
        pt.y = 0.5;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_BOUNDARY);

        /* Point on top edge of square */
        pt.x = 0.5;
        pt.y = 1;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_BOUNDARY);

        /* Point on bottom left corner of square */
        pt.x = 0;
        pt.y = 0;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_BOUNDARY);

        /* Point on top left corner of square */
        pt.x = 0;
        pt.y = 1;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_BOUNDARY);

        /* Point outside top left corner of square */
        pt.x = -0.1;
        pt.y = 1;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_OUTSIDE);

        /* Point outside top left corner of square */
        pt.x = 0;
        pt.y = 1.1;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_OUTSIDE);

        /* Point outside left side of square */
        pt.x = -0.2;
        pt.y = 0.5;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_OUTSIDE);

        lwline_free(lwline);
        lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0, 1 1, 2 0, 0 0)"));
        pa = lwline->points;

        /* Point outside grazing top of triangle */
        pt.x = 0;
        pt.y = 1;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_OUTSIDE);

        lwline_free(lwline);
        lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0, 0 4, 1 4, 2 2, 3 4, 4 4, 4 0, 0 0)"));
        pa = lwline->points;

        /* Point outside grazing top of triangle */
        pt.x = 1;
        pt.y = 2;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_INSIDE);

        /* Point outside grazing top of triangle */
        pt.x = 3;
        pt.y = 2;
        rv = ptarray_contains_point(pa, &pt);
        CU_ASSERT_EQUAL(rv, LW_INSIDE);

        lwline_free(lwline);
}

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