*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU General Public Licence. See the COPYING file.
- *
+ *
**********************************************************************/
#include <stdio.h>
LWCOMPOUND *
lwcompound_deserialize(uchar *serialized)
{
- LWCOMPOUND *result;
- LWGEOM_INSPECTED *insp;
- int type = lwgeom_getType(serialized[0]);
- int i;
-
- if(type != COMPOUNDTYPE)
- {
- lwerror("lwcompound_deserialize called on non compound: %d", type);
- return NULL;
- }
-
- insp = lwgeom_inspect(serialized);
-
- result = lwalloc(sizeof(LWCOMPOUND));
- result->type = insp->type;
- result->SRID = insp->SRID;
- result->ngeoms = insp->ngeometries;
- result->geoms = lwalloc(sizeof(LWGEOM *)*insp->ngeometries);
-
- if(lwgeom_hasBBOX(serialized[0]))
- {
- result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
- memcpy(result->bbox, serialized + 1, sizeof(BOX2DFLOAT4));
- }
- else result->bbox = NULL;
-
- for(i = 0; i < insp->ngeometries; i++)
- {
- if(lwgeom_getType(insp->sub_geoms[i][0]) == LINETYPE)
- result->geoms[i] = (LWGEOM *)lwline_deserialize(insp->sub_geoms[i]);
- else
- result->geoms[i] = (LWGEOM *)lwcircstring_deserialize(insp->sub_geoms[i]);
- if(TYPE_NDIMS(result->geoms[i]->type) != TYPE_NDIMS(result->type))
- {
- lwerror("Mixed dimensions (compound: %d, line/circularstring %d:%d)",
- TYPE_NDIMS(result->type), i,
- TYPE_NDIMS(result->geoms[i]->type)
- );
- lwfree(result);
- return NULL;
- }
- }
- return result;
+ LWCOMPOUND *result;
+ LWGEOM_INSPECTED *insp;
+ int type = lwgeom_getType(serialized[0]);
+ int i;
+
+ if(type != COMPOUNDTYPE)
+ {
+ lwerror("lwcompound_deserialize called on non compound: %d", type);
+ return NULL;
+ }
+
+ insp = lwgeom_inspect(serialized);
+
+ result = lwalloc(sizeof(LWCOMPOUND));
+ result->type = insp->type;
+ result->SRID = insp->SRID;
+ result->ngeoms = insp->ngeometries;
+ result->geoms = lwalloc(sizeof(LWGEOM *)*insp->ngeometries);
+
+ if(lwgeom_hasBBOX(serialized[0]))
+ {
+ result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
+ memcpy(result->bbox, serialized + 1, sizeof(BOX2DFLOAT4));
+ }
+ else result->bbox = NULL;
+
+ for(i = 0; i < insp->ngeometries; i++)
+ {
+ if(lwgeom_getType(insp->sub_geoms[i][0]) == LINETYPE)
+ result->geoms[i] = (LWGEOM *)lwline_deserialize(insp->sub_geoms[i]);
+ else
+ result->geoms[i] = (LWGEOM *)lwcircstring_deserialize(insp->sub_geoms[i]);
+ if(TYPE_NDIMS(result->geoms[i]->type) != TYPE_NDIMS(result->type))
+ {
+ lwerror("Mixed dimensions (compound: %d, line/circularstring %d:%d)",
+ TYPE_NDIMS(result->type), i,
+ TYPE_NDIMS(result->geoms[i]->type)
+ );
+ lwfree(result);
+ return NULL;
+ }
+ }
+ return result;
}
-/*
+/**
* Add 'what' to this string at position 'where'
- * where=0 == prepend
- * where=-1 == append
- * Returns a COMPOUND or a GEOMETRYCOLLECTION
+ * @param where if = 0 then prepend, if -1 then append
+ * @param what an #LWGEOM object
+ * @return a {@link #LWCOMPOUND} or a {@link #GEOMETRYCOLLECTION}
*/
LWGEOM *
lwcompound_add(const LWCOMPOUND *to, uint32 where, const LWGEOM *what)
{
- LWCOLLECTION *col;
- LWGEOM **geoms;
- int newtype;
-
- LWDEBUG(2, "lwcompound_add called.");
-
- if(where != -1 && where != 0)
- {
- lwerror("lwcompound_add only supports 0 or -1 as a second argument, not %d", where);
- return NULL;
- }
-
- /* dimensions compatibility are checked by caller */
-
- /* Construct geoms array */
- geoms = lwalloc(sizeof(LWGEOM *)*2);
- if(where == -1) /* append */
- {
- geoms[0] = lwgeom_clone((LWGEOM *)to);
- geoms[1] = lwgeom_clone(what);
- }
- else /* prepend */
- {
- geoms[0] = lwgeom_clone(what);
- geoms[1] = lwgeom_clone((LWGEOM *)to);
- }
-
- /* reset SRID and wantbbox flag from component types */
- geoms[0]->SRID = geoms[1]->SRID = -1;
- TYPE_SETHASSRID(geoms[0]->type, 0);
- TYPE_SETHASSRID(geoms[1]->type, 0);
- TYPE_SETHASBBOX(geoms[0]->type, 0);
- TYPE_SETHASBBOX(geoms[1]->type, 0);
-
- /* Find appropriate geom type */
- if(TYPE_GETTYPE(what->type) == LINETYPE || TYPE_GETTYPE(what->type) == CIRCSTRINGTYPE) newtype = COMPOUNDTYPE;
- else newtype = COLLECTIONTYPE;
-
- col = lwcollection_construct(newtype,
- to->SRID, NULL, 2, geoms);
-
- return (LWGEOM *)col;
+ LWCOLLECTION *col;
+ LWGEOM **geoms;
+ int newtype;
+
+ LWDEBUG(2, "lwcompound_add called.");
+
+ if(where != -1 && where != 0)
+ {
+ lwerror("lwcompound_add only supports 0 or -1 as a second argument, not %d", where);
+ return NULL;
+ }
+
+ /* dimensions compatibility are checked by caller */
+
+ /* Construct geoms array */
+ geoms = lwalloc(sizeof(LWGEOM *)*2);
+ if(where == -1) /* append */
+ {
+ geoms[0] = lwgeom_clone((LWGEOM *)to);
+ geoms[1] = lwgeom_clone(what);
+ }
+ else /* prepend */
+ {
+ geoms[0] = lwgeom_clone(what);
+ geoms[1] = lwgeom_clone((LWGEOM *)to);
+ }
+
+ /* reset SRID and wantbbox flag from component types */
+ geoms[0]->SRID = geoms[1]->SRID = -1;
+ TYPE_SETHASSRID(geoms[0]->type, 0);
+ TYPE_SETHASSRID(geoms[1]->type, 0);
+ TYPE_SETHASBBOX(geoms[0]->type, 0);
+ TYPE_SETHASBBOX(geoms[1]->type, 0);
+
+ /* Find appropriate geom type */
+ if(TYPE_GETTYPE(what->type) == LINETYPE || TYPE_GETTYPE(what->type) == CIRCSTRINGTYPE) newtype = COMPOUNDTYPE;
+ else newtype = COLLECTIONTYPE;
+
+ col = lwcollection_construct(newtype,
+ to->SRID, NULL, 2, geoms);
+
+ return (LWGEOM *)col;
}