static void test_ptarray_signed_area()
{
LWLINE *line;
double area;
/* parallelogram */
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,1 1, 2 1, 1 0, 0 0)"));
area = ptarray_signed_area(line->points);
CU_ASSERT_DOUBLE_EQUAL(area, 1.0, 0.0000001);
lwline_free(line);
/* square */
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 2, 2 2, 2 0, 0 0)"));
area = ptarray_signed_area(line->points);
CU_ASSERT_DOUBLE_EQUAL(area, 4.0, 0.0000001);
lwline_free(line);
/* square backwares*/
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,2 0, 2 2, 0 2, 0 0)"));
area = ptarray_signed_area(line->points);
//printf("%g\n",area);
CU_ASSERT_DOUBLE_EQUAL(area, -4.0, 0.0000001);
lwline_free(line);
}
static void test_lwline_crossing_long_lines(void)
{
LWLINE *l51;
LWLINE *l52;
/*
** More complex test, longer lines and multiple crossings
*/
/* Vertical line with vertices at y integers */
l51 = (LWLINE*)lwgeom_from_wkt("LINESTRING(0 0, 0 1, 0 2, 0 3, 0 4)", LW_PARSER_CHECK_NONE);
/* Two crossings at segment midpoints */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, -1 1.5, 1 3, 1 4, 1 5)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_MULTICROSS_END_SAME_FIRST_LEFT );
lwline_free(l52);
/* One crossing at interior vertex */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 0 1, -1 1, -1 2, -1 3)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_CROSS_LEFT );
lwline_free(l52);
/* Two crossings at interior vertices */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 0 1, -1 1, 0 3, 1 3)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_MULTICROSS_END_SAME_FIRST_LEFT );
lwline_free(l52);
/* Two crossings, one at the first vertex on at interior vertex */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 0, 0 0, -1 1, 0 3, 1 3)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_MULTICROSS_END_SAME_FIRST_LEFT );
lwline_free(l52);
/* Two crossings, one at the first vertex on the next interior vertex */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 0, 0 0, -1 1, 0 1, 1 2)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_MULTICROSS_END_SAME_FIRST_LEFT );
lwline_free(l52);
/* Three crossings, two at midpoints, one at vertex */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(0.5 1, -1 0.5, 1 2, -1 2, -1 3)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_MULTICROSS_END_LEFT );
lwline_free(l52);
/* One mid-point co-linear crossing */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 0 1.5, 0 2.5, -1 3, -1 4)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_CROSS_LEFT );
lwline_free(l52);
/* One on-vertices co-linear crossing */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 0 1, 0 2, -1 4, -1 4)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_CROSS_LEFT );
lwline_free(l52);
/* No crossing, but end on a co-linearity. */
l52 = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 1 2, 1 3, 0 3, 0 4)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l51, l52) == LINE_NO_CROSS );
lwline_free(l52);
lwline_free(l51);
}
static void test_ptarray_locate_point(void)
{
LWLINE *line;
double loc, dist;
POINT4D p, l;
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 3,20 4)"));
p = getPoint4d(line->points, 0);
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 0);
CU_ASSERT_EQUAL(dist, 0.0);
p = getPoint4d(line->points, 1);
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 1);
CU_ASSERT_EQUAL(dist, 0.0);
p.x = 21; p.y = 4;
loc = ptarray_locate_point(line->points, &p, &dist, NULL);
CU_ASSERT_EQUAL(loc, 1);
CU_ASSERT_EQUAL(dist, 1.0);
p.x = 0; p.y = 2;
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 0);
CU_ASSERT_EQUAL(dist, 1.0);
lwline_free(line);
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,20 0,40 0)"));
p.x = 20; p.y = 0;
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 0.5);
CU_ASSERT_EQUAL(dist, 0.0);
lwline_free(line);
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-40 0,0 0,20 0,40 0)"));
p.x = 20; p.y = 0;
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 0.75);
CU_ASSERT_EQUAL(dist, 0.0);
lwline_free(line);
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING M (0 0 0, 10 0 20)"));
p.x = 5; p.y = 0;
loc = ptarray_locate_point(line->points, &p, &dist, &l);
CU_ASSERT_EQUAL(loc, 0.5);
CU_ASSERT_EQUAL(dist, 0.0);
CU_ASSERT_EQUAL(l.m, 10.0);
lwline_free(line);
}
static void test_lwline_crossing_bugs(void)
{
LWLINE *l1;
LWLINE *l2;
l1 = (LWLINE*)lwgeom_from_wkt("LINESTRING(2.99 90.16,71 74,20 140,171 154)", LW_PARSER_CHECK_NONE);
l2 = (LWLINE*)lwgeom_from_wkt("LINESTRING(25 169,89 114,40 70,86 43)", LW_PARSER_CHECK_NONE);
CU_ASSERT( lwline_crossing_direction(l1, l2) == LINE_MULTICROSS_END_RIGHT );
lwline_free(l1);
lwline_free(l2);
}
static void do_test_lwgeom_effectivearea_lines(void)
{
LWLINE *the_geom;
int avoid_collaps=2;
/*Line 1*/
the_geom = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1, 0 1, 0 2, -1 4, -1 4)", LW_PARSER_CHECK_NONE);
double the_areas1[]={FLT_MAX,0.5,0.5,0,FLT_MAX};
do_test_lwgeom_effectivearea(the_geom->points,the_areas1,avoid_collaps);
lwline_free(the_geom);
/*Line 2*/
the_geom = (LWLINE*)lwgeom_from_wkt("LINESTRING(10 10,12 8, 15 7, 18 7, 20 20, 15 21, 18 22, 10 30, 40 100)", LW_PARSER_CHECK_NONE);
double the_areas2[]={FLT_MAX,5,1.5,55,100,4,4,300,FLT_MAX};
do_test_lwgeom_effectivearea(the_geom->points,the_areas2,avoid_collaps);
lwline_free(the_geom);
}
static void test_lwline_clip_big(void)
{
POINTARRAY *pa = ptarray_construct(1, 0, 3);
LWLINE *line = lwline_construct(SRID_UNKNOWN, NULL, pa);
LWCOLLECTION *c;
char *ewkt;
POINT4D p;
p.x = 0.0;
p.y = 0.0;
p.z = 0.0;
ptarray_set_point4d(pa, 0, &p);
p.x = 1.0;
p.y = 1.0;
p.z = 1.0;
ptarray_set_point4d(pa, 1, &p);
p.x = 2.0;
p.y = 2.0;
p.z = 2.0;
ptarray_set_point4d(pa, 2, &p);
c = lwline_clip_to_ordinate_range(line, 'Z', 0.5, 1.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0.5 0.5 0.5,1 1 1,1.5 1.5 1.5))" );
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
}
/*
* @param icompound input curve polygon
* @param tol tolerance, semantic driven by tolerance_type
* @param tolerance_type see LW_LINEARIZE_TOLERANCE_TYPE
* @param flags see flags in lwarc_linearize
*
* @return a newly allocated LWPOLY
*/
static LWPOLY *
lwcurvepoly_linearize(const LWCURVEPOLY *curvepoly, double tol,
LW_LINEARIZE_TOLERANCE_TYPE tolerance_type,
int flags)
{
LWPOLY *ogeom;
LWGEOM *tmp;
LWLINE *line;
POINTARRAY **ptarray;
int i;
LWDEBUG(2, "lwcurvepoly_linearize called.");
ptarray = lwalloc(sizeof(POINTARRAY *)*curvepoly->nrings);
for (i = 0; i < curvepoly->nrings; i++)
{
tmp = curvepoly->rings[i];
if (tmp->type == CIRCSTRINGTYPE)
{
line = lwcircstring_linearize((LWCIRCSTRING *)tmp, tol, tolerance_type, flags);
ptarray[i] = ptarray_clone_deep(line->points);
lwline_free(line);
}
else if (tmp->type == LINETYPE)
{
line = (LWLINE *)tmp;
ptarray[i] = ptarray_clone_deep(line->points);
}
else if (tmp->type == COMPOUNDTYPE)
{
line = lwcompound_linearize((LWCOMPOUND *)tmp, tol, tolerance_type, flags);
ptarray[i] = ptarray_clone_deep(line->points);
lwline_free(line);
}
else
{
lwerror("Invalid ring type found in CurvePoly.");
return NULL;
}
}
ogeom = lwpoly_construct(curvepoly->srid, NULL, curvepoly->nrings, ptarray);
return ogeom;
}
static void test_geohash(void)
{
LWPOINT *lwpoint = NULL;
LWLINE *lwline = NULL;
LWMLINE *lwmline = NULL;
char *geohash = NULL;
lwpoint = (LWPOINT*)lwgeom_from_wkt("POINT(23.0 25.2)", LW_PARSER_CHECK_NONE);
geohash = lwgeom_geohash((LWGEOM*)lwpoint,0);
//printf("\ngeohash %s\n",geohash);
CU_ASSERT_STRING_EQUAL(geohash, "ss2r77s0du7p2ewb8hmx");
lwpoint_free(lwpoint);
lwfree(geohash);
lwpoint = (LWPOINT*)lwgeom_from_wkt("POINT(23.0 25.2 2.0)", LW_PARSER_CHECK_NONE);
geohash = lwgeom_geohash((LWGEOM*)lwpoint,0);
//printf("geohash %s\n",geohash);
CU_ASSERT_STRING_EQUAL(geohash, "ss2r77s0du7p2ewb8hmx");
lwpoint_free(lwpoint);
lwfree(geohash);
lwline = (LWLINE*)lwgeom_from_wkt("LINESTRING(23.0 23.0,23.1 23.1)", LW_PARSER_CHECK_NONE);
geohash = lwgeom_geohash((LWGEOM*)lwline,0);
//printf("geohash %s\n",geohash);
CU_ASSERT_STRING_EQUAL(geohash, "ss0");
lwline_free(lwline);
lwfree(geohash);
lwline = (LWLINE*)lwgeom_from_wkt("LINESTRING(23.0 23.0,23.001 23.001)", LW_PARSER_CHECK_NONE);
geohash = lwgeom_geohash((LWGEOM*)lwline,0);
//printf("geohash %s\n",geohash);
CU_ASSERT_STRING_EQUAL(geohash, "ss06g7");
lwline_free(lwline);
lwfree(geohash);
lwmline = (LWMLINE*)lwgeom_from_wkt("MULTILINESTRING((23.0 23.0,23.1 23.1),(23.0 23.0,23.1 23.1))", LW_PARSER_CHECK_NONE);
geohash = lwgeom_geohash((LWGEOM*)lwmline,0);
//printf("geohash %s\n",geohash);
CU_ASSERT_STRING_EQUAL(geohash, "ss0");
lwmline_free(lwmline);
lwfree(geohash);
}
static void test_ptarray_isccw(void)
{
LWLINE *line;
LWPOLY* poly;
int ccw;
/* clockwise rectangle */
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 10,10 10,10 0, 0 0)"));
ccw = ptarray_isccw(line->points);
CU_ASSERT_EQUAL(ccw, 0);
lwline_free(line);
/* clockwise triangle */
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 3,20 4,20 3, 0 3)"));
ccw = ptarray_isccw(line->points);
CU_ASSERT_EQUAL(ccw, 0);
lwline_free(line);
/* counterclockwise triangle */
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 3,20 3,20 4, 0 3)"));
ccw = ptarray_isccw(line->points);
CU_ASSERT_EQUAL(ccw, 1);
lwline_free(line);
/* counterclockwise narrow ring (see ticket #1302) */
line = lwgeom_as_lwline(lwgeom_from_hexwkb("01020000000500000000917E9BA468294100917E9B8AEA284137894120A4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA2841C976BE1FA4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
ccw = ptarray_isccw(line->points);
CU_ASSERT_EQUAL(ccw, 1);
lwline_free(line);
/* clockwise narrow ring (see ticket #1302) */
line = lwgeom_as_lwline(lwgeom_from_hexwkb("01020000000500000000917E9BA468294100917E9B8AEA2841C976BE1FA4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA284137894120A4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
ccw = ptarray_isccw(line->points);
CU_ASSERT_EQUAL(ccw, 0);
lwline_free(line);
/* Clockwise narrow ring (see ticket #1302) */
poly = lwgeom_as_lwpoly(lwgeom_from_hexwkb("0103000000010000000500000000917E9BA468294100917E9B8AEA2841C976BE1FA4682941C976BE9F8AEA2841B39ABE1FA46829415ACCC29F8AEA284137894120A4682941C976BE9F8AEA284100917E9BA468294100917E9B8AEA2841", LW_PARSER_CHECK_NONE));
ccw = ptarray_isccw(poly->rings[0]);
CU_ASSERT_EQUAL(ccw, 0);
lwpoly_free(poly);
}
double lwcompound_length_2d(const LWCOMPOUND *comp)
{
double length = 0.0;
LWLINE *line;
if ( lwgeom_is_empty((LWGEOM*)comp) )
return 0.0;
line = lwcompound_stroke(comp, 32);
length = lwline_length_2d(line);
lwline_free(line);
return length;
}
double lwcircstring_length_2d(const LWCIRCSTRING *circ)
{
double length = 0.0;
LWLINE *line;
if ( lwcircstring_is_empty(circ) )
return 0.0;
line = lwcircstring_segmentize(circ, 32);
length = lwline_length_2d(line);
lwline_free(line);
return length;
}
void lwgeom_free(LWGEOM *lwgeom)
{
/* There's nothing here to free... */
if( ! lwgeom ) return;
LWDEBUGF(5,"freeing a %s",lwtype_name(lwgeom->type));
switch (lwgeom->type)
{
case POINTTYPE:
lwpoint_free((LWPOINT *)lwgeom);
break;
case LINETYPE:
lwline_free((LWLINE *)lwgeom);
break;
case POLYGONTYPE:
lwpoly_free((LWPOLY *)lwgeom);
break;
case CIRCSTRINGTYPE:
lwcircstring_free((LWCIRCSTRING *)lwgeom);
break;
case TRIANGLETYPE:
lwtriangle_free((LWTRIANGLE *)lwgeom);
break;
case MULTIPOINTTYPE:
lwmpoint_free((LWMPOINT *)lwgeom);
break;
case MULTILINETYPE:
lwmline_free((LWMLINE *)lwgeom);
break;
case MULTIPOLYGONTYPE:
lwmpoly_free((LWMPOLY *)lwgeom);
break;
case POLYHEDRALSURFACETYPE:
lwpsurface_free((LWPSURFACE *)lwgeom);
break;
case TINTYPE:
lwtin_free((LWTIN *)lwgeom);
break;
case CURVEPOLYTYPE:
case COMPOUNDTYPE:
case MULTICURVETYPE:
case MULTISURFACETYPE:
case COLLECTIONTYPE:
lwcollection_free((LWCOLLECTION *)lwgeom);
break;
default:
lwerror("lwgeom_free called with unknown type (%d) %s", lwgeom->type, lwtype_name(lwgeom->type));
}
return;
}
void lwmline_free(LWMLINE *mline)
{
int i;
if ( mline->bbox )
lwfree(mline->bbox);
for ( i = 0; i < mline->ngeoms; i++ )
if ( mline->geoms && mline->geoms[i] )
lwline_free(mline->geoms[i]);
if ( mline->geoms )
lwfree(mline->geoms);
lwfree(mline);
}
/*
* @param icompound input compound curve
* @param tol tolerance, semantic driven by tolerance_type
* @param tolerance_type see LW_LINEARIZE_TOLERANCE_TYPE
* @param flags see flags in lwarc_linearize
*
* @return a newly allocated LWLINE
*/
static LWLINE *
lwcompound_linearize(const LWCOMPOUND *icompound, double tol,
LW_LINEARIZE_TOLERANCE_TYPE tolerance_type,
int flags)
{
LWGEOM *geom;
POINTARRAY *ptarray = NULL, *ptarray_out = NULL;
LWLINE *tmp = NULL;
uint32_t i, j;
POINT4D p;
LWDEBUG(2, "lwcompound_stroke called.");
ptarray = ptarray_construct_empty(FLAGS_GET_Z(icompound->flags), FLAGS_GET_M(icompound->flags), 64);
for (i = 0; i < icompound->ngeoms; i++)
{
geom = icompound->geoms[i];
if (geom->type == CIRCSTRINGTYPE)
{
tmp = lwcircstring_linearize((LWCIRCSTRING *)geom, tol, tolerance_type, flags);
for (j = 0; j < tmp->points->npoints; j++)
{
getPoint4d_p(tmp->points, j, &p);
ptarray_append_point(ptarray, &p, LW_TRUE);
}
lwline_free(tmp);
}
else if (geom->type == LINETYPE)
{
tmp = (LWLINE *)geom;
for (j = 0; j < tmp->points->npoints; j++)
{
getPoint4d_p(tmp->points, j, &p);
ptarray_append_point(ptarray, &p, LW_TRUE);
}
}
else
{
lwerror("Unsupported geometry type %d found.",
geom->type, lwtype_name(geom->type));
return NULL;
}
}
ptarray_out = ptarray_remove_repeated_points(ptarray, 0.0);
ptarray_free(ptarray);
return lwline_construct(icompound->srid, NULL, ptarray_out);
}
static void test_ptarray_insert_point(void)
{
LWLINE *line;
char *wkt;
POINT4D p;
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING EMPTY"));
p.x = 1;
p.y = 1;
ptarray_insert_point(line->points, &p, 0);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(1 1)");
lwfree(wkt);
p.x = 2;
p.y = 20;
ptarray_insert_point(line->points, &p, 0);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(2 20,1 1)");
lwfree(wkt);
p.x = 3;
p.y = 30;
ptarray_insert_point(line->points, &p, 1);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(2 20,3 30,1 1)");
lwfree(wkt);
p.x = 4;
p.y = 40;
ptarray_insert_point(line->points, &p, 0);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(4 40,2 20,3 30,1 1)");
lwfree(wkt);
p.x = 5;
p.y = 50;
ptarray_insert_point(line->points, &p, 4);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(4 40,2 20,3 30,1 1,5 50)");
lwfree(wkt);
lwline_free(line);
}
static void test_ptarray_append_point(void)
{
LWLINE *line;
char *wkt;
POINT4D p;
line = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,1 1)"));
p.x = 1;
p.y = 1;
ptarray_append_point(line->points, &p, LW_TRUE);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(0 0,1 1,1 1)");
lwfree(wkt);
ptarray_append_point(line->points, &p, LW_FALSE);
wkt = lwgeom_to_text(lwline_as_lwgeom(line));
CU_ASSERT_STRING_EQUAL(wkt,"LINESTRING(0 0,1 1,1 1)");
lwfree(wkt);
lwline_free(line);
}
static void test_tree_circ_create(void)
{
LWLINE *g;
CIRC_NODE *c;
/* Line with 4 edges */
g = lwgeom_as_lwline(lwgeom_from_wkt("LINESTRING(0 88,0 89,0 90,180 89,180 88)", LW_PARSER_CHECK_NONE));
c = circ_tree_new(g->points);
//circ_tree_print(c, 0);
if ( CIRC_NODE_SIZE > 4 )
{
CU_ASSERT(c->num_nodes == 4);
}
else
{
CU_ASSERT(c->num_nodes == ( 4 % CIRC_NODE_SIZE ? 1 : 0 ) + 4 / CIRC_NODE_SIZE);
}
circ_tree_free(c);
lwline_free(g);
}
static LWMPOINT*
lwline_locate_along(const LWLINE *lwline, double m, double offset)
{
POINTARRAY *opa = NULL;
LWMPOINT *mp = NULL;
LWGEOM *lwg = lwline_as_lwgeom(lwline);
int hasz, hasm, srid;
/* Return degenerates upwards */
if ( ! lwline ) return NULL;
/* Create empty return shell */
srid = lwgeom_get_srid(lwg);
hasz = lwgeom_has_z(lwg);
hasm = lwgeom_has_m(lwg);
if ( hasm )
{
/* Find points along */
opa = ptarray_locate_along(lwline->points, m, offset);
}
else
{
LWLINE *lwline_measured = lwline_measured_from_lwline(lwline, 0.0, 1.0);
opa = ptarray_locate_along(lwline_measured->points, m, offset);
lwline_free(lwline_measured);
}
/* Return NULL as EMPTY */
if ( ! opa )
return lwmpoint_construct_empty(srid, hasz, hasm);
/* Convert pointarray into a multipoint */
mp = lwmpoint_construct(srid, opa);
ptarray_free(opa);
return mp;
}
static LWGEOM*
lwline_split_by_mpoint(const LWLINE* lwline_in, const LWMPOINT* mp)
{
LWMLINE* out;
int i, j;
out = lwmline_construct_empty(lwline_in->srid,
FLAGS_GET_Z(lwline_in->flags),
FLAGS_GET_M(lwline_in->flags));
lwmline_add_lwline(out, lwline_clone_deep(lwline_in));
for (i=0; i<mp->ngeoms; ++i)
{
for (j=0; j<out->ngeoms; ++j)
{
lwline_in = out->geoms[j];
LWPOINT *blade_in = mp->geoms[i];
int ret = lwline_split_by_point_to(lwline_in, blade_in, out);
if ( 2 == ret )
{
/* the point splits this line,
* 2 splits were added to collection.
* We'll move the latest added into
* the slot of the current one.
*/
lwline_free(out->geoms[j]);
out->geoms[j] = out->geoms[--out->ngeoms];
}
}
}
/* Turn multiline into collection */
out->type = COLLECTIONTYPE;
return (LWGEOM*)out;
}
Datum BOX2D_to_LWGEOM(PG_FUNCTION_ARGS)
{
GBOX *box = (GBOX *)PG_GETARG_POINTER(0);
POINTARRAY *pa = ptarray_construct_empty(0, 0, 5);
POINT4D pt;
GSERIALIZED *result;
/*
* Alter BOX2D cast so that a valid geometry is always
* returned depending upon the size of the BOX2D. The
* code makes the following assumptions:
* - If the BOX2D is a single point then return a
* POINT geometry
* - If the BOX2D represents either a horizontal or
* vertical line, return a LINESTRING geometry
* - Otherwise return a POLYGON
*/
if ( (box->xmin == box->xmax) && (box->ymin == box->ymax) )
{
/* Construct and serialize point */
LWPOINT *point = lwpoint_make2d(SRID_UNKNOWN, box->xmin, box->ymin);
result = geometry_serialize(lwpoint_as_lwgeom(point));
lwpoint_free(point);
}
else if ( (box->xmin == box->xmax) || (box->ymin == box->ymax) )
{
LWLINE *line;
/* Assign coordinates to point array */
pt.x = box->xmin;
pt.y = box->ymin;
ptarray_append_point(pa, &pt, LW_TRUE);
pt.x = box->xmax;
pt.y = box->ymax;
ptarray_append_point(pa, &pt, LW_TRUE);
/* Construct and serialize linestring */
line = lwline_construct(SRID_UNKNOWN, NULL, pa);
result = geometry_serialize(lwline_as_lwgeom(line));
lwline_free(line);
}
else
{
LWPOLY *poly;
POINTARRAY **ppa = lwalloc(sizeof(POINTARRAY*));
/* Assign coordinates to point array */
pt.x = box->xmin;
pt.y = box->ymin;
ptarray_append_point(pa, &pt, LW_TRUE);
pt.x = box->xmin;
pt.y = box->ymax;
ptarray_append_point(pa, &pt, LW_TRUE);
pt.x = box->xmax;
pt.y = box->ymax;
ptarray_append_point(pa, &pt, LW_TRUE);
pt.x = box->xmax;
pt.y = box->ymin;
ptarray_append_point(pa, &pt, LW_TRUE);
pt.x = box->xmin;
pt.y = box->ymin;
ptarray_append_point(pa, &pt, LW_TRUE);
/* Construct polygon */
ppa[0] = pa;
poly = lwpoly_construct(SRID_UNKNOWN, NULL, 1, ppa);
result = geometry_serialize(lwpoly_as_lwgeom(poly));
lwpoly_free(poly);
}
PG_RETURN_POINTER(result);
}
static void test_ptarrayarc_contains_point()
{
/* int ptarrayarc_contains_point(const POINTARRAY *pa, const POINT2D *pt) */
LWLINE *lwline;
POINTARRAY *pa;
POINT2D pt;
int rv;
/*** Collection of semi-circles surrounding unit square ***/
lwline = 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)"));
pa = lwline->points;
/* Point in middle of square */
pt.x = 0;
pt.y = 0;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point in left lobe */
pt.x = -1.1;
pt.y = 0.1;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point on boundary of left lobe */
pt.x = -1;
pt.y = 0;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point on boundary vertex */
pt.x = -1;
pt.y = 1;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_BOUNDARY);
/* Point outside */
pt.x = -1.5;
pt.y = 1.5;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/*** Two-edge ring made up of semi-circles (really, a circle) ***/
lwline_free(lwline);
lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 0, 0 1, 1 0, 0 -1, -1 0)"));
pa = lwline->points;
/* Point outside */
pt.x = -1.5;
pt.y = 1.5;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/* Point more outside */
pt.x = 2.5;
pt.y = 1.5;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/* Point more outside */
pt.x = 2.5;
pt.y = 2.5;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/* Point inside at middle */
pt.x = 0;
pt.y = 0;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point inside offset from middle */
pt.x = 0.01;
pt.y = 0.01;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point on edge vertex */
pt.x = 0;
pt.y = 1;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_BOUNDARY);
/*** Two-edge ring, closed ***/
lwline_free(lwline);
lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(1 6, 6 1, 9 7, 6 10, 1 6)"));
pa = lwline->points;
/* Point to left of ring */
pt.x = 20;
pt.y = 4;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/*** One-edge ring, closed circle ***/
lwline_free(lwline);
lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 0, 1 0, -1 0)"));
pa = lwline->points;
/* Point inside */
pt.x = 0;
pt.y = 0;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_INSIDE);
/* Point outside */
pt.x = 0;
pt.y = 2;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_OUTSIDE);
/* Point on boundary */
pt.x = 0;
pt.y = 1;
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_EQUAL(rv, LW_BOUNDARY);
/*** Overshort ring ***/
lwline_free(lwline);
lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 0, 1 0)"));
pa = lwline->points;
cu_error_msg_reset();
rv = ptarrayarc_contains_point(pa, &pt);
//printf("%s\n", cu_error_msg);
CU_ASSERT_STRING_EQUAL("ptarrayarc_contains_point called with even number of points", cu_error_msg);
/*** Unclosed ring ***/
lwline_free(lwline);
lwline = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(-1 0, 1 0, 2 0)"));
pa = lwline->points;
cu_error_msg_reset();
rv = ptarrayarc_contains_point(pa, &pt);
CU_ASSERT_STRING_EQUAL("ptarrayarc_contains_point called on unclosed ring", cu_error_msg);
lwline_free(lwline);
}
static void test_ptarray_contains_point()
{
/* 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);
}
static void test_lwline_clip(void)
{
LWCOLLECTION *c;
LWLINE *line = NULL;
LWLINE *l51 = NULL;
char *ewkt;
/* Vertical line with vertices at y integers */
l51 = (LWLINE*)lwgeom_from_wkt("LINESTRING(0 0, 0 1, 0 2, 0 3, 0 4)", LW_PARSER_CHECK_NONE);
/* Clip in the middle, mid-range. */
c = lwline_clip_to_ordinate_range(l51, 'Y', 1.5, 2.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 1.5,0 2,0 2.5))");
lwfree(ewkt);
lwcollection_free(c);
/* Clip off the top. */
c = lwline_clip_to_ordinate_range(l51, 'Y', 3.5, 5.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 3.5,0 4))");
lwfree(ewkt);
lwcollection_free(c);
/* Clip off the bottom. */
c = lwline_clip_to_ordinate_range(l51, 'Y', -1.5, 2.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2,0 2.5))" );
lwfree(ewkt);
lwcollection_free(c);
/* Range holds entire object. */
c = lwline_clip_to_ordinate_range(l51, 'Y', -1.5, 5.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2,0 3,0 4))" );
lwfree(ewkt);
lwcollection_free(c);
/* Clip on vertices. */
c = lwline_clip_to_ordinate_range(l51, 'Y', 1.0, 2.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 1,0 2))" );
lwfree(ewkt);
lwcollection_free(c);
/* Clip on vertices off the bottom. */
c = lwline_clip_to_ordinate_range(l51, 'Y', -1.0, 2.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 0,0 1,0 2))" );
lwfree(ewkt);
lwcollection_free(c);
/* Clip on top. */
c = lwline_clip_to_ordinate_range(l51, 'Y', -1.0, 0.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(0 0))" );
lwfree(ewkt);
lwcollection_free(c);
/* ST_LocateBetweenElevations(ST_GeomFromEWKT('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)'), 1, 2)) */
line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 2.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2,1 1 1))" );
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
/* ST_LocateBetweenElevations('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)', 1, 2)) */
line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 2.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("a = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2,1 1 1))" );
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
/* ST_LocateBetweenElevations('LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)', 1, 1)) */
line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 2 3, 4 5 6, 6 6 6, 1 1 1)", LW_PARSER_CHECK_NONE);
c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 1.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("b = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(1 1 1))" );
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
/* ST_LocateBetweenElevations('LINESTRING(1 1 1, 1 2 2)', 1,1) */
line = (LWLINE*)lwgeom_from_wkt("LINESTRING(1 1 1, 1 2 2)", LW_PARSER_CHECK_NONE);
c = lwline_clip_to_ordinate_range(line, 'Z', 1.0, 1.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(1 1 1))" );
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
lwline_free(l51);
}
/*
** The suite cleanup function.
** Frees any global objects.
*/
static int clean_cg_suite(void)
{
if ( l21 ) lwline_free(l21);
if ( l22 ) lwline_free(l22);
return 0;
}
static void test_lwmline_clip(void)
{
LWCOLLECTION *c;
char *ewkt;
LWMLINE *mline = NULL;
LWLINE *line = NULL;
/*
** Set up the input line. Trivial one-member case.
*/
mline = (LWMLINE*)lwgeom_from_wkt("MULTILINESTRING((0 0,0 1,0 2,0 3,0 4))", LW_PARSER_CHECK_NONE);
/* Clip in the middle, mid-range. */
c = lwmline_clip_to_ordinate_range(mline, 'Y', 1.5, 2.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((0 1.5,0 2,0 2.5))");
lwfree(ewkt);
lwcollection_free(c);
lwmline_free(mline);
/*
** Set up the input line. Two-member case.
*/
mline = (LWMLINE*)lwgeom_from_wkt("MULTILINESTRING((1 0,1 1,1 2,1 3,1 4), (0 0,0 1,0 2,0 3,0 4))", LW_PARSER_CHECK_NONE);
/* Clip off the top. */
c = lwmline_clip_to_ordinate_range(mline, 'Y', 3.5, 5.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((1 3.5,1 4),(0 3.5,0 4))");
lwfree(ewkt);
lwcollection_free(c);
lwmline_free(mline);
/*
** Set up staggered input line to create multi-type output.
*/
mline = (LWMLINE*)lwgeom_from_wkt("MULTILINESTRING((1 0,1 -1,1 -2,1 -3,1 -4), (0 0,0 1,0 2,0 3,0 4))", LW_PARSER_CHECK_NONE);
/* Clip from 0 upwards.. */
c = lwmline_clip_to_ordinate_range(mline, 'Y', 0.0, 2.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "GEOMETRYCOLLECTION(POINT(1 0),LINESTRING(0 0,0 1,0 2,0 2.5))");
lwfree(ewkt);
lwcollection_free(c);
lwmline_free(mline);
/*
** Set up input line from MAC
*/
line = (LWLINE*)lwgeom_from_wkt("LINESTRING(0 0 0 0,1 1 1 1,2 2 2 2,3 3 3 3,4 4 4 4,3 3 3 5,2 2 2 6,1 1 1 7,0 0 0 8)", LW_PARSER_CHECK_NONE);
/* Clip from 3 to 3.5 */
c = lwline_clip_to_ordinate_range(line, 'Z', 3.0, 3.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((3 3 3 3,3.5 3.5 3.5 3.5),(3.5 3.5 3.5 4.5,3 3 3 5))");
lwfree(ewkt);
lwcollection_free(c);
/* Clip from 2 to 3.5 */
c = lwline_clip_to_ordinate_range(line, 'Z', 2.0, 3.5);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2 2,3 3 3 3,3.5 3.5 3.5 3.5),(3.5 3.5 3.5 4.5,3 3 3 5,2 2 2 6))");
lwfree(ewkt);
lwcollection_free(c);
/* Clip from 3 to 4 */
c = lwline_clip_to_ordinate_range(line, 'Z', 3.0, 4.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((3 3 3 3,4 4 4 4,3 3 3 5))");
lwfree(ewkt);
lwcollection_free(c);
/* Clip from 2 to 3 */
c = lwline_clip_to_ordinate_range(line, 'Z', 2.0, 3.0);
ewkt = lwgeom_to_ewkt((LWGEOM*)c);
//printf("c = %s\n", ewkt);
CU_ASSERT_STRING_EQUAL(ewkt, "MULTILINESTRING((2 2 2 2,3 3 3 3),(3 3 3 5,2 2 2 6))");
lwfree(ewkt);
lwcollection_free(c);
lwline_free(line);
}
static void test_ptarray_append_ptarray(void)
{
LWLINE *line1, *line2;
int ret;
char *wkt;
/* Empty first line */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING EMPTY"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 10,5 5)"));
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(0 0,0 10,5 5)");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Empty second line */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0, 5 5, 6 3)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING EMPTY"));
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(0 0,5 5,6 3)");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Both lines empty */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING EMPTY"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING EMPTY"));
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING EMPTY");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Sane sewing */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 4, 0 0,5 7)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(5 7,12 43, 42 15)"));
ret = ptarray_append_ptarray(line1->points, line2->points, 0);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(10 4,0 0,5 7,12 43,42 15)");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Untolerated sewing */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 4, 0 0,5 7)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(5.5 7,12 43, 42 15)"));
ret = ptarray_append_ptarray(line1->points, line2->points, 0);
CU_ASSERT(ret == LW_FAILURE);
lwline_free(line2);
lwline_free(line1);
/* Tolerated sewing */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 4, 0 0,5 7)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(5.5 7,12 43, 42 15)"));
ret = ptarray_append_ptarray(line1->points, line2->points, .7);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(10 4,0 0,5 7,5.5 7,12 43,42 15)");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Check user input trust (creates non-simple line */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 10)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 0,0 10)"));
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(0 0,0 10,0 0,0 10)");
lwfree(wkt);
lwline_free(line2);
lwline_free(line1);
/* Mixed dimensionality is not allowed */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 10 0, 10 0 0)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 0,11 0)"));
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_FAILURE);
lwline_free(line2);
lwline_free(line1);
/* Appending a read-only pointarray is allowed */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 10, 10 0)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 0,11 0)"));
FLAGS_SET_READONLY(line2->points->flags, 1);
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_SUCCESS);
wkt = lwgeom_to_text(lwline_as_lwgeom(line1));
CU_ASSERT_STRING_EQUAL(wkt, "LINESTRING(0 10,10 0,11 0)");
lwfree(wkt);
FLAGS_SET_READONLY(line2->points->flags, 0); /* for lwline_free */
lwline_free(line2);
lwline_free(line1);
/* Appending to a read-only pointarray is forbidden */
line1 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(0 10, 10 0)"));
line2 = lwgeom_as_lwline(lwgeom_from_text("LINESTRING(10 0,11 0)"));
FLAGS_SET_READONLY(line1->points->flags, 1);
ret = ptarray_append_ptarray(line1->points, line2->points, -1);
CU_ASSERT(ret == LW_FAILURE);
lwline_free(line2);
FLAGS_SET_READONLY(line1->points->flags, 0); /* for lwline_free */
lwline_free(line1);
}
int main()
{
/*
* An example to show how to call the WKT/WKB unparsers in liblwgeom
*/
LWGEOM_UNPARSER_RESULT lwg_unparser_result;
int result;
LWGEOM *lwgeom;
uchar *serialized_lwgeom;
DYNPTARRAY *dpa;
POINT4D point4d;
POINTARRAY **rings;
LWPOINT *testpoint;
LWLINE *testline;
LWPOLY *testpoly;
/*
* Construct a geometry equivalent to POINT(0 51)
*/
dpa = dynptarray_create(10, 2);
point4d.x = 0;
point4d.y = 51;
dynptarray_addPoint4d(dpa, &point4d, 0);
testpoint = lwpoint_construct(-1, NULL, dpa->pa);
/* Generate the LWGEOM from LWPOINT, then serialize it ready for the parser */
lwgeom = lwpoint_as_lwgeom(testpoint);
serialized_lwgeom = lwgeom_serialize(lwgeom);
/* Output the geometry in WKT and WKB */
result = serialized_lwgeom_to_ewkt(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_ALL);
printf("WKT format : %s\n", lwg_unparser_result.wkoutput);
result = serialized_lwgeom_to_hexwkb(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_ALL, NDR);
printf("HEXWKB format : %s\n\n", lwg_unparser_result.wkoutput);
/* Free all of the allocated items */
lwfree(lwg_unparser_result.wkoutput);
lwfree(serialized_lwgeom);
lwpoint_free(testpoint);
lwfree(dpa);
/*
* Construct a geometry equivalent to LINESTRING(0 0, 2 2, 4 1)
*/
dpa = dynptarray_create(10, 2);
point4d.x = 0;
point4d.y = 0;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 2;
point4d.y = 2;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 4;
point4d.y = 1;
dynptarray_addPoint4d(dpa, &point4d, 0);
testline = lwline_construct(-1, NULL, dpa->pa);
/* Generate the LWGEOM from LWLINE, then serialize it ready for the parser */
lwgeom = lwline_as_lwgeom(testline);
serialized_lwgeom = lwgeom_serialize(lwgeom);
/* Output the geometry in WKT and WKB */
result = serialized_lwgeom_to_ewkt(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_ALL);
printf("WKT format : %s\n", lwg_unparser_result.wkoutput);
result = serialized_lwgeom_to_hexwkb(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_ALL, NDR);
printf("HEXWKB format : %s\n\n", lwg_unparser_result.wkoutput);
/* Free all of the allocated items */
lwfree(lwg_unparser_result.wkoutput);
lwfree(serialized_lwgeom);
lwline_free(testline);
lwfree(dpa);
/*
* Construct a geometry equivalent to POLYGON((0 0, 0 10, 10 10, 10 0, 0 0)(3 3, 3 6, 6 6, 6 3, 3 3))
*/
/* Allocate memory for the rings */
rings = lwalloc(sizeof(POINTARRAY) * 2);
/* Construct the first ring */
dpa = dynptarray_create(10, 2);
point4d.x = 0;
point4d.y = 0;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 0;
point4d.y = 10;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 10;
point4d.y = 10;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 10;
point4d.y = 0;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 0;
point4d.y = 0;
dynptarray_addPoint4d(dpa, &point4d, 0);
rings[0] = dpa->pa;
lwfree(dpa);
/* Construct the second ring */
dpa = dynptarray_create(10, 2);
point4d.x = 3;
point4d.y = 3;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 3;
point4d.y = 6;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 6;
point4d.y = 6;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 6;
point4d.y = 3;
dynptarray_addPoint4d(dpa, &point4d, 0);
point4d.x = 3;
point4d.y = 3;
dynptarray_addPoint4d(dpa, &point4d, 0);
rings[1] = dpa->pa;
lwfree(dpa);
testpoly = lwpoly_construct(-1, NULL, 2, rings);
/* Generate the LWGEOM from LWPOLY, then serialize it ready for the parser */
lwgeom = lwpoly_as_lwgeom(testpoly);
serialized_lwgeom = lwgeom_serialize(lwgeom);
/* Output the geometry in WKT and WKB */
result = serialized_lwgeom_to_ewkt(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_NONE);
printf("WKT format : %s\n", lwg_unparser_result.wkoutput);
result = serialized_lwgeom_to_hexwkb(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_NONE, NDR);
printf("HEXWKB format : %s\n\n", lwg_unparser_result.wkoutput);
/* Free all of the allocated items */
lwfree(lwg_unparser_result.wkoutput);
lwfree(serialized_lwgeom);
lwpoly_free(testpoly);
}
static void test_lwline_split_by_point_to(void)
{
#if POSTGIS_GEOS_VERSION >= 33
LWLINE *line;
LWPOINT *point;
LWMLINE *coll;
int ret;
/* Because i don't trust that much prior tests... ;) */
cu_error_msg_reset();
coll = lwmline_construct_empty(SRID_UNKNOWN, 0, 0);
CU_ASSERT_EQUAL(coll->ngeoms, 0);
line = lwgeom_as_lwline(lwgeom_from_wkt("LINESTRING(0 0,5 5, 10 0)",
LW_PARSER_CHECK_NONE));
CU_ASSERT(line != NULL);
point = lwgeom_as_lwpoint(lwgeom_from_wkt(
"POINT(0 0)",
LW_PARSER_CHECK_NONE));
ret = lwline_split_by_point_to(line, point, coll);
CU_ASSERT_EQUAL(ret, 1);
CU_ASSERT_EQUAL(coll->ngeoms, 0);
lwpoint_free(point);
point = lwgeom_as_lwpoint(lwgeom_from_wkt(
"POINT(10 0)",
LW_PARSER_CHECK_NONE));
ret = lwline_split_by_point_to(line, point, coll);
CU_ASSERT_EQUAL(ret, 1);
CU_ASSERT_EQUAL(coll->ngeoms, 0);
lwpoint_free(point);
point = lwgeom_as_lwpoint(lwgeom_from_wkt(
"POINT(5 0)",
LW_PARSER_CHECK_NONE));
ret = lwline_split_by_point_to(line, point, coll);
CU_ASSERT_EQUAL(ret, 0);
CU_ASSERT_EQUAL(coll->ngeoms, 0);
lwpoint_free(point);
point = lwgeom_as_lwpoint(lwgeom_from_wkt(
"POINT(5 5)",
LW_PARSER_CHECK_NONE));
ret = lwline_split_by_point_to(line, point, coll);
CU_ASSERT_EQUAL(ret, 2);
CU_ASSERT_EQUAL(coll->ngeoms, 2);
lwpoint_free(point);
point = lwgeom_as_lwpoint(lwgeom_from_wkt(
"POINT(2 2)",
LW_PARSER_CHECK_NONE));
ret = lwline_split_by_point_to(line, point, coll);
CU_ASSERT_EQUAL(ret, 2);
CU_ASSERT_EQUAL(coll->ngeoms, 4);
lwpoint_free(point);
lwcollection_free((LWCOLLECTION*)coll);
lwline_free(line);
#endif /* POSTGIS_GEOS_VERSION >= 33 */
}
/**
* @brief Generate an allocated geometry string for shapefile object obj using the state parameters
*/
int
GenerateLineStringGeometry(SHPLOADERSTATE *state, SHPObject *obj, char **geometry)
{
LWCOLLECTION *lwcollection = NULL;
LWGEOM **lwmultilinestrings;
uchar *serialized_lwgeom;
LWGEOM_UNPARSER_RESULT lwg_unparser_result;
DYNPTARRAY **dpas;
POINT4D point4d;
int dims = 0, hasz = 0, hasm = 0;
int result;
int u, v, start_vertex, end_vertex;
char *mem;
/* Determine the correct dimensions: note that in hwgeom-compatible mode we cannot use
the M coordinate */
if (state->wkbtype & WKBZOFFSET)
hasz = 1;
if (!state->config->hwgeom)
if (state->wkbtype & WKBMOFFSET)
hasm = 1;
TYPE_SETZM(dims, hasz, hasm);
if (state->config->simple_geometries == 1 && obj->nParts > 1)
{
snprintf(state->message, SHPLOADERMSGLEN, "We have a Multilinestring with %d parts, can't use -S switch!", obj->nParts);
return SHPLOADERERR;
}
/* Allocate memory for our array of LWLINEs and our dynptarrays */
lwmultilinestrings = malloc(sizeof(LWPOINT *) * obj->nParts);
dpas = malloc(sizeof(DYNPTARRAY *) * obj->nParts);
/* We need an array of pointers to each of our sub-geometries */
for (u = 0; u < obj->nParts; u++)
{
/* Create a dynptarray containing the line points */
dpas[u] = dynptarray_create(obj->nParts, dims);
/* Set the start/end vertices depending upon whether this is
a MULTILINESTRING or not */
if ( u == obj->nParts-1 )
end_vertex = obj->nVertices;
else
end_vertex = obj->panPartStart[u + 1];
start_vertex = obj->panPartStart[u];
for (v = start_vertex; v < end_vertex; v++)
{
/* Generate the point */
point4d.x = obj->padfX[v];
point4d.y = obj->padfY[v];
if (state->wkbtype & WKBZOFFSET)
point4d.z = obj->padfZ[v];
if (state->wkbtype & WKBMOFFSET)
point4d.m = obj->padfM[v];
dynptarray_addPoint4d(dpas[u], &point4d, 0);
}
/* Generate the LWLINE */
lwmultilinestrings[u] = lwline_as_lwgeom(lwline_construct(state->config->sr_id, NULL, dpas[u]->pa));
}
/* If using MULTILINESTRINGs then generate the serialized collection, otherwise just a single LINESTRING */
if (state->config->simple_geometries == 0)
{
lwcollection = lwcollection_construct(MULTILINETYPE, state->config->sr_id, NULL, obj->nParts, lwmultilinestrings);
/* When outputting wkt rather than wkb, we need to remove the SRID from the inner geometries */
if (state->config->hwgeom)
{
for (u = 0; u < obj->nParts; u++)
lwmultilinestrings[u]->SRID = -1;
}
serialized_lwgeom = lwgeom_serialize(lwcollection_as_lwgeom(lwcollection));
}
else
{
serialized_lwgeom = lwgeom_serialize(lwmultilinestrings[0]);
}
if (!state->config->hwgeom)
result = serialized_lwgeom_to_hexwkb(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_NONE, -1);
else
result = serialized_lwgeom_to_ewkt(&lwg_unparser_result, serialized_lwgeom, PARSER_CHECK_NONE);
/* Return the error message if we failed */
if (result)
{
snprintf(state->message, SHPLOADERMSGLEN, "%s", lwg_unparser_result.message);
return SHPLOADERERR;
}
/* Allocate a string containing the resulting geometry */
mem = malloc(strlen(lwg_unparser_result.wkoutput) + 1);
strcpy(mem, lwg_unparser_result.wkoutput);
/* Free all of the allocated items */
lwfree(lwg_unparser_result.wkoutput);
lwfree(serialized_lwgeom);
for (u = 0; u < obj->nParts; u++)
{
lwfree(dpas[u]->pa->serialized_pointlist);
lwline_free(lwgeom_as_lwline(lwmultilinestrings[u]));
lwfree(dpas[u]);
}
lwfree(dpas);
lwfree(lwmultilinestrings);
if (lwcollection)
lwfree(lwcollection);
/* Return the string - everything ok */
*geometry = mem;
return SHPLOADEROK;
}
static void test_tree_circ_pip(void)
{
LWLINE *g;
CIRC_NODE *c;
POINT2D pt, pt_outside;
int rv, on_boundary;
pt.x = 0.0;
pt.y = 0.0;
pt_outside.x = -2.0;
pt_outside.y = 0.0;
/* Point in square */
g = lwgeom_as_lwline(lwgeom_from_wkt("LINESTRING(-1 -1,1 -1,1 1,-1 1,-1 -1)", LW_PARSER_CHECK_NONE));
c = circ_tree_new(g->points);
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv, 1);
/* Point on other side of square */
pt.x = 2.0;
pt.y = 0.0;
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv, 0);
/* Clean and do new shape */
circ_tree_free(c);
lwline_free(g);
/* Point in square, stab passing through vertex */
pt.x = 0.0;
pt.y = 0.0;
g = lwgeom_as_lwline(lwgeom_from_wkt("LINESTRING(-1 -1,0 -1,1 -1,1 0,1 1,0 1,-1 1,-1 0,-1 -1)", LW_PARSER_CHECK_NONE));
c = circ_tree_new(g->points);
//circ_tree_print(c, 0);
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv, 1);
/* Point on other side of square, stab passing through vertex */
pt.x = 2.0;
pt.y = 0.0;
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv, 0);
/* Clean and do new shape */
circ_tree_free(c);
lwline_free(g);
/* Point outside "w" thing, stab passing through vertexes and grazing pointy thing */
pt.x = 2.0;
pt.y = 0.0;
g = lwgeom_as_lwline(lwgeom_from_wkt("LINESTRING(-1 -1,0 -1,1 -1,1 0,1 1,0 0,-1 1,-1 0,-1 -1)", LW_PARSER_CHECK_NONE));
c = circ_tree_new(g->points);
//circ_tree_print(c, 0);
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
//printf("rv %d\n", rv);
CU_ASSERT_EQUAL(rv, 0);
/* Point inside "w" thing, stab passing through vertexes and grazing pointy thing */
pt.x = 0.8;
pt.y = 0.0;
rv = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
//printf("rv %d\n", rv);
CU_ASSERT_EQUAL(rv, 1);
/* Clean and do new shape */
circ_tree_free(c);
lwline_free(g);
}
