static void test_tree_circ_pip2(void)
{
LWGEOM* g;
LWPOLY* p;
LWPOINT* lwpt;
int rv_classic, rv_tree, on_boundary;
POINT2D pt, pt_outside;
GBOX gbox;
CIRC_NODE *c;
g = lwgeom_from_wkt("POLYGON((0 0,0 1,1 1,1 0,0 0))", LW_PARSER_CHECK_NONE);
p = lwgeom_as_lwpoly(g);
pt.x = 0.2;
pt.y = 0.1;
lwgeom_calculate_gbox_geodetic(g, &gbox);
gbox_pt_outside(&gbox, &pt_outside);
c = circ_tree_new(p->rings[0]);
//circ_tree_print(c, 0);
rv_classic = lwpoly_covers_point2d(p, &pt);
rv_tree = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv_tree, rv_classic);
circ_tree_free(c);
lwgeom_free(g);
g = lwgeom_from_hexwkb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
p = lwgeom_as_lwpoly(g);
lwpt = (LWPOINT*)lwgeom_from_hexwkb("0101000020E610000057B89C28FEB320C09C8102CB3B2B4A40", LW_PARSER_CHECK_NONE);
lwpoint_getPoint2d_p(lwpt, &pt);
lwgeom_calculate_gbox_geodetic(g, &gbox);
gbox_pt_outside(&gbox, &pt_outside);
//printf("OUTSIDE POINT(%g %g)\n", pt_outside.x, pt_outside.y);
c = circ_tree_new(p->rings[0]);
rv_classic = lwpoly_covers_point2d(p, &pt);
rv_tree = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv_tree, rv_classic);
circ_tree_free(c);
lwpoint_free(lwpt);
lwgeom_free(g);
g = lwgeom_from_hexwkb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LW_PARSER_CHECK_NONE);
p = lwgeom_as_lwpoly(g);
lwpt = (LWPOINT*)lwgeom_from_hexwkb("0101000020E610000031B1F9B836A046C03C889D2974124E40", LW_PARSER_CHECK_NONE);
lwpoint_getPoint2d_p(lwpt, &pt);
lwgeom_calculate_gbox_geodetic(g, &gbox);
gbox_pt_outside(&gbox, &pt_outside);
//printf("OUTSIDE POINT(%g %g)\n", pt_outside.x, pt_outside.y);
c = circ_tree_new(p->rings[0]);
rv_classic = lwpoly_covers_point2d(p, &pt);
rv_tree = circ_tree_contains_point(c, &pt, &pt_outside, &on_boundary);
CU_ASSERT_EQUAL(rv_tree, rv_classic);
circ_tree_free(c);
lwpoint_free(lwpt);
lwgeom_free(g);
}
Datum LWGEOM_numinteriorrings_polygon(PG_FUNCTION_ARGS)
{
GSERIALIZED *geom = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
LWGEOM *lwgeom = lwgeom_from_gserialized(geom);
LWPOLY *poly = NULL;
LWCURVEPOLY *curvepoly = NULL;
int result = -1;
if ( lwgeom->type == POLYGONTYPE )
{
poly = lwgeom_as_lwpoly(lwgeom);
result = poly->nrings - 1;
}
else if ( lwgeom->type == CURVEPOLYTYPE )
{
curvepoly = lwgeom_as_lwcurvepoly(lwgeom);
result = curvepoly->nrings - 1;
}
lwgeom_free(lwgeom);
PG_FREE_IF_COPY(geom, 0);
if ( result < 0 )
PG_RETURN_NULL();
PG_RETURN_INT32(result);
}
LWGEOM* wkt_parser_polygon_add_ring(LWGEOM *poly, POINTARRAY *pa, char dimcheck)
{
LWDEBUG(4,"entered");
/* Bad inputs are a problem */
if( ! (pa && poly) )
{
SET_PARSER_ERROR(PARSER_ERROR_OTHER);
return NULL;
}
/* Rings must agree on dimensionality */
if( FLAGS_NDIMS(poly->flags) != FLAGS_NDIMS(pa->flags) )
{
ptarray_free(pa);
lwgeom_free(poly);
SET_PARSER_ERROR(PARSER_ERROR_MIXDIMS);
return NULL;
}
/* Apply check for minimum number of points, if requested. */
if( (global_parser_result.parser_check_flags & LW_PARSER_CHECK_MINPOINTS) && (pa->npoints < 4) )
{
ptarray_free(pa);
lwgeom_free(poly);
SET_PARSER_ERROR(PARSER_ERROR_MOREPOINTS);
return NULL;
}
/* Apply check for not closed rings, if requested. */
if( (global_parser_result.parser_check_flags & LW_PARSER_CHECK_CLOSURE) &&
! (dimcheck == 'Z' ? ptarray_isclosedz(pa) : ptarray_isclosed2d(pa)) )
{
ptarray_free(pa);
lwgeom_free(poly);
SET_PARSER_ERROR(PARSER_ERROR_UNCLOSED);
return NULL;
}
/* If something goes wrong adding a ring, error out. */
if ( LW_FAILURE == lwpoly_add_ring(lwgeom_as_lwpoly(poly), pa) )
{
ptarray_free(pa);
lwgeom_free(poly);
SET_PARSER_ERROR(PARSER_ERROR_OTHER);
return NULL;
}
return poly;
}
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);
}
Datum LWGEOM_dumppoints(PG_FUNCTION_ARGS) {
FuncCallContext *funcctx;
MemoryContext oldcontext, newcontext;
GSERIALIZED *pglwgeom;
LWCOLLECTION *lwcoll;
LWGEOM *lwgeom;
struct dumpstate *state;
struct dumpnode *node;
HeapTuple tuple;
Datum pathpt[2]; /* used to construct the composite return value */
bool isnull[2] = {0,0}; /* needed to say neither value is null */
Datum result; /* the actual composite return value */
if (SRF_IS_FIRSTCALL()) {
funcctx = SRF_FIRSTCALL_INIT();
newcontext = funcctx->multi_call_memory_ctx;
oldcontext = MemoryContextSwitchTo(newcontext);
/* get a local copy of what we're doing a dump points on */
pglwgeom = PG_GETARG_GSERIALIZED_P_COPY(0);
lwgeom = lwgeom_from_gserialized(pglwgeom);
/* return early if nothing to do */
if (!lwgeom || lwgeom_is_empty(lwgeom)) {
MemoryContextSwitchTo(oldcontext);
funcctx = SRF_PERCALL_SETUP();
SRF_RETURN_DONE(funcctx);
}
/* Create function state */
state = lwalloc(sizeof *state);
state->root = lwgeom;
state->stacklen = 0;
state->pathlen = 0;
state->pt = 0;
state->ring = 0;
funcctx->user_fctx = state;
/*
* Push a struct dumpnode on the state stack
*/
state->stack[0].idx = 0;
state->stack[0].geom = lwgeom;
state->stacklen++;
/*
* get tuple description for return type
*/
if (get_call_result_type(fcinfo, 0, &funcctx->tuple_desc) != TYPEFUNC_COMPOSITE) {
ereport(ERROR, (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("set-valued function called in context that cannot accept a set")));
}
BlessTupleDesc(funcctx->tuple_desc);
/* get and cache data for constructing int4 arrays */
get_typlenbyvalalign(INT4OID, &state->typlen, &state->byval, &state->align);
MemoryContextSwitchTo(oldcontext);
}
/* stuff done on every call of the function */
funcctx = SRF_PERCALL_SETUP();
newcontext = funcctx->multi_call_memory_ctx;
/* get state */
state = funcctx->user_fctx;
while (1) {
node = &state->stack[state->stacklen-1];
lwgeom = node->geom;
/* need to return a point from this geometry */
if (!lwgeom_is_collection(lwgeom)) {
/* either return a point, or pop the stack */
/* TODO use a union? would save a tiny amount of stack space.
* probably not worth the bother
*/
LWLINE *line;
LWCIRCSTRING *circ;
LWPOLY *poly;
LWTRIANGLE *tri;
LWPOINT *lwpoint = NULL;
POINT4D pt;
/*
* net result of switch should be to set lwpoint to the
* next point to return, or leave at NULL if there
* are no more points in the geometry
*/
switch(lwgeom->type) {
case TRIANGLETYPE:
tri = lwgeom_as_lwtriangle(lwgeom);
if (state->pt == 0) {
state->path[state->pathlen++] = Int32GetDatum(state->ring+1);
}
if (state->pt <= 3) {
getPoint4d_p(tri->points, state->pt, &pt);
lwpoint = lwpoint_make(tri->srid,
FLAGS_GET_Z(tri->points->flags),
FLAGS_GET_M(tri->points->flags),
&pt);
}
if (state->pt > 3) {
state->pathlen--;
}
break;
case POLYGONTYPE:
poly = lwgeom_as_lwpoly(lwgeom);
if (state->pt == poly->rings[state->ring]->npoints) {
state->pt = 0;
state->ring++;
state->pathlen--;
}
if (state->pt == 0 && state->ring < poly->nrings) {
/* handle new ring */
state->path[state->pathlen] = Int32GetDatum(state->ring+1);
state->pathlen++;
}
if (state->ring == poly->nrings) {
} else {
/* TODO should be able to directly get the point
* into the point array of a fixed lwpoint
*/
/* can't get the point directly from the ptarray because
* it might be aligned wrong, so at least one memcpy
* seems unavoidable
* It might be possible to pass it directly to gserialized
* depending how that works, it might effectively be gserialized
* though a brief look at the code indicates not
*/
getPoint4d_p(poly->rings[state->ring], state->pt, &pt);
lwpoint = lwpoint_make(poly->srid,
FLAGS_GET_Z(poly->rings[state->ring]->flags),
FLAGS_GET_M(poly->rings[state->ring]->flags),
&pt);
}
break;
case POINTTYPE:
if (state->pt == 0) lwpoint = lwgeom_as_lwpoint(lwgeom);
break;
case LINETYPE:
line = lwgeom_as_lwline(lwgeom);
if (line->points && state->pt <= line->points->npoints) {
lwpoint = lwline_get_lwpoint((LWLINE*)lwgeom, state->pt);
}
break;
case CIRCSTRINGTYPE:
circ = lwgeom_as_lwcircstring(lwgeom);
if (circ->points && state->pt <= circ->points->npoints) {
lwpoint = lwcircstring_get_lwpoint((LWCIRCSTRING*)lwgeom, state->pt);
}
break;
default:
ereport(ERROR, (errcode(ERRCODE_DATA_EXCEPTION),
errmsg("Invalid Geometry type %d passed to ST_DumpPoints()", lwgeom->type)));
}
/*
* At this point, lwpoint is either NULL, in which case
* we need to pop the geometry stack and get the next
* geometry, if amy, or lwpoint is set and we construct
* a record type with the integer array of geometry
* indexes and the point number, and the actual point
* geometry itself
*/
if (!lwpoint) {
/* no point, so pop the geom and look for more */
if (--state->stacklen == 0) SRF_RETURN_DONE(funcctx);
state->pathlen--;
continue;
} else {
/* write address of current geom/pt */
state->pt++;
state->path[state->pathlen] = Int32GetDatum(state->pt);
pathpt[0] = PointerGetDatum(construct_array(state->path, state->pathlen+1,
INT4OID, state->typlen, state->byval, state->align));
pathpt[1] = PointerGetDatum(gserialized_from_lwgeom((LWGEOM*)lwpoint,0,0));
tuple = heap_form_tuple(funcctx->tuple_desc, pathpt, isnull);
result = HeapTupleGetDatum(tuple);
SRF_RETURN_NEXT(funcctx, result);
}
}
lwcoll = (LWCOLLECTION*)node->geom;
/* if a collection and we have more geoms */
if (node->idx < lwcoll->ngeoms) {
/* push the next geom on the path and the stack */
lwgeom = lwcoll->geoms[node->idx++];
state->path[state->pathlen++] = Int32GetDatum(node->idx);
node = &state->stack[state->stacklen++];
node->idx = 0;
node->geom = lwgeom;
state->pt = 0;
state->ring = 0;
/* loop back to beginning, which will then check whatever node we just pushed */
continue;
}
/* no more geometries in the current collection */
if (--state->stacklen == 0) SRF_RETURN_DONE(funcctx);
state->pathlen--;
state->stack[state->stacklen-1].idx++;
}
}
Datum LWGEOM_interiorringn_polygon(PG_FUNCTION_ARGS)
{
GSERIALIZED *geom;
int32 wanted_index;
LWCURVEPOLY *curvepoly = NULL;
LWPOLY *poly = NULL;
POINTARRAY *ring;
LWLINE *line;
LWGEOM *lwgeom;
GSERIALIZED *result;
GBOX *bbox = NULL;
int type;
POSTGIS_DEBUG(2, "LWGEOM_interierringn_polygon called.");
wanted_index = PG_GETARG_INT32(1);
if ( wanted_index < 1 )
{
/* elog(ERROR, "InteriorRingN: ring number is 1-based"); */
PG_RETURN_NULL(); /* index out of range */
}
geom = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
type = gserialized_get_type(geom);
if ( (type != POLYGONTYPE) && (type != CURVEPOLYTYPE) )
{
elog(ERROR, "InteriorRingN: geom is not a polygon");
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_NULL();
}
lwgeom = lwgeom_from_gserialized(geom);
if( lwgeom_is_empty(lwgeom) )
{
lwpoly_free(poly);
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_NULL();
}
if ( type == POLYGONTYPE)
{
poly = lwgeom_as_lwpoly(lwgeom_from_gserialized(geom));
/* Ok, now we have a polygon. Let's see if it has enough holes */
if ( wanted_index >= poly->nrings )
{
lwpoly_free(poly);
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_NULL();
}
ring = poly->rings[wanted_index];
/* COMPUTE_BBOX==TAINTING */
if ( poly->bbox )
{
bbox = lwalloc(sizeof(GBOX));
ptarray_calculate_gbox_cartesian(ring, bbox);
}
/* This is a LWLINE constructed by interior ring POINTARRAY */
line = lwline_construct(poly->srid, bbox, ring);
result = geometry_serialize((LWGEOM *)line);
lwline_release(line);
lwpoly_free(poly);
}
else
{
curvepoly = lwgeom_as_lwcurvepoly(lwgeom_from_gserialized(geom));
if (wanted_index >= curvepoly->nrings)
{
PG_FREE_IF_COPY(geom, 0);
lwgeom_release((LWGEOM *)curvepoly);
PG_RETURN_NULL();
}
result = geometry_serialize(curvepoly->rings[wanted_index]);
lwgeom_free((LWGEOM*)curvepoly);
}
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_POINTER(result);
}
Datum LWGEOM_exteriorring_polygon(PG_FUNCTION_ARGS)
{
GSERIALIZED *geom = (GSERIALIZED *)PG_DETOAST_DATUM(PG_GETARG_DATUM(0));
GSERIALIZED *result;
POINTARRAY *extring;
LWGEOM *lwgeom;
LWLINE *line;
GBOX *bbox=NULL;
int type = gserialized_get_type(geom);
POSTGIS_DEBUG(2, "LWGEOM_exteriorring_polygon called.");
if ( (type != POLYGONTYPE) &&
(type != CURVEPOLYTYPE) &&
(type != TRIANGLETYPE))
{
elog(ERROR, "ExteriorRing: geom is not a polygon");
PG_RETURN_NULL();
}
lwgeom = lwgeom_from_gserialized(geom);
if( lwgeom_is_empty(lwgeom) )
{
line = lwline_construct_empty(lwgeom->srid,
lwgeom_has_z(lwgeom),
lwgeom_has_m(lwgeom));
result = geometry_serialize(lwline_as_lwgeom(line));
}
else if ( lwgeom->type == POLYGONTYPE )
{
LWPOLY *poly = lwgeom_as_lwpoly(lwgeom);
/* Ok, now we have a polygon. Here is its exterior ring. */
extring = poly->rings[0];
/*
* This is a LWLINE constructed by exterior ring POINTARRAY
* If the input geom has a bbox, use it for
* the output geom, as exterior ring makes it up !
*/
if ( poly->bbox )
bbox = gbox_copy(poly->bbox);
line = lwline_construct(poly->srid, bbox, extring);
result = geometry_serialize((LWGEOM *)line);
lwgeom_release((LWGEOM *)line);
}
else if ( lwgeom->type == TRIANGLETYPE )
{
LWTRIANGLE *triangle = lwgeom_as_lwtriangle(lwgeom);
/*
* This is a LWLINE constructed by exterior ring POINTARRAY
* If the input geom has a bbox, use it for
* the output geom, as exterior ring makes it up !
*/
if ( triangle->bbox )
bbox = gbox_copy(triangle->bbox);
line = lwline_construct(triangle->srid, bbox, triangle->points);
result = geometry_serialize((LWGEOM *)line);
lwgeom_release((LWGEOM *)line);
}
else
{
LWCURVEPOLY *curvepoly = lwgeom_as_lwcurvepoly(lwgeom);
result = geometry_serialize(curvepoly->rings[0]);
}
lwgeom_free(lwgeom);
PG_FREE_IF_COPY(geom, 0);
PG_RETURN_POINTER(result);
}
/**
* @brief Generate an allocated geometry string for shapefile object obj using the state parameters
*
* This function basically deals with the polygon case. It sorts the polys in order of outer,
* inner,inner, so that inners always come after outers they are within.
*
*/
int
GeneratePolygonGeometry(SHPLOADERSTATE *state, SHPObject *obj, char **geometry)
{
Ring **Outer;
int polygon_total, ring_total;
int pi, vi; /* part index and vertex index */
int u;
LWCOLLECTION *lwcollection = NULL;
LWGEOM **lwpolygons;
uchar *serialized_lwgeom;
LWGEOM_UNPARSER_RESULT lwg_unparser_result;
LWPOLY *lwpoly;
DYNPTARRAY *dpas;
POINTARRAY ***pas;
POINT4D point4d;
int dims = 0, hasz = 0, hasm = 0;
int result;
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);
polygon_total = FindPolygons(obj, &Outer);
if (state->config->simple_geometries == 1 && polygon_total != 1) /* We write Non-MULTI geometries, but have several parts: */
{
snprintf(state->message, SHPLOADERMSGLEN, "We have a Multipolygon with %d parts, can't use -S switch!", polygon_total);
return SHPLOADERERR;
}
/* Allocate memory for our array of LWPOLYs */
lwpolygons = malloc(sizeof(LWPOLY *) * polygon_total);
/* Allocate memory for our POINTARRAY pointers for each polygon */
pas = malloc(sizeof(POINTARRAY **) * polygon_total);
/* Cycle through each individual polygon */
for (pi = 0; pi < polygon_total; pi++)
{
Ring *polyring;
int ring_index = 0;
/* Firstly count through the total number of rings in this polygon */
ring_total = 0;
polyring = Outer[pi];
while (polyring)
{
ring_total++;
polyring = polyring->next;
}
/* Reserve memory for the POINTARRAYs representing each ring */
pas[pi] = malloc(sizeof(POINTARRAY *) * ring_total);
/* Cycle through each ring within the polygon, starting with the outer */
polyring = Outer[pi];
while (polyring)
{
/* Create a DYNPTARRAY containing the points making up the ring */
dpas = dynptarray_create(polyring->n, dims);
for (vi = 0; vi < polyring->n; vi++)
{
/* Build up a point array of all the points in this ring */
point4d.x = polyring->list[vi].x;
point4d.y = polyring->list[vi].y;
if (state->wkbtype & WKBZOFFSET)
point4d.z = polyring->list[vi].z;
if (state->wkbtype & WKBMOFFSET)
point4d.m = polyring->list[vi].m;
dynptarray_addPoint4d(dpas, &point4d, 0);
}
/* Copy the POINTARRAY pointer from the DYNPTARRAY structure so we can
use the LWPOLY constructor */
pas[pi][ring_index] = dpas->pa;
/* Free the DYNPTARRAY structure (we don't need this part anymore as we
have the reference to the internal POINTARRAY) */
lwfree(dpas);
polyring = polyring->next;
ring_index++;
}
/* Generate the LWGEOM */
lwpoly = lwpoly_construct(state->config->sr_id, NULL, ring_total, pas[pi]);
lwpolygons[pi] = lwpoly_as_lwgeom(lwpoly);
}
/* If using MULTIPOLYGONS then generate the serialized collection, otherwise just a single POLYGON */
if (state->config->simple_geometries == 0)
{
lwcollection = lwcollection_construct(MULTIPOLYGONTYPE, state->config->sr_id, NULL, polygon_total, lwpolygons);
/* When outputting wkt rather than wkb, we need to remove the SRID from the inner geometries */
if (state->config->hwgeom)
{
for (u = 0; u < pi; u++)
lwpolygons[u]->SRID = -1;
}
serialized_lwgeom = lwgeom_serialize(lwcollection_as_lwgeom(lwcollection));
}
else
{
serialized_lwgeom = lwgeom_serialize(lwpolygons[0]);
}
/* Note: lwpoly_free() currently doesn't free its serialized pointlist, so do it manually */
for (pi = 0; pi < polygon_total; pi++)
{
Ring *polyring = Outer[pi];
int ring_index = 0;
while (polyring)
{
if (pas[pi][ring_index]->serialized_pointlist)
lwfree(pas[pi][ring_index]->serialized_pointlist);
polyring = polyring->next;
ring_index++;
}
}
ReleasePolygons(Outer, polygon_total);
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);
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);
/* Cycle through each polygon, freeing everything we need... */
for (u = 0; u < polygon_total; u++)
lwpoly_free(lwgeom_as_lwpoly(lwpolygons[u]));
/* Free the pointer arrays */
lwfree(pas);
lwfree(lwpolygons);
if (lwcollection)
lwfree(lwcollection);
/* Return the string - everything ok */
*geometry = mem;
return SHPLOADEROK;
}
