/*
* Given the LWPOINT serialized form (or a pointer into a muli* one)
* construct a proper LWPOINT.
* serialized_form should point to the 8bit type format (with type = 1)
* See serialized form doc
*/
LWPOINT *
lwpoint_deserialize(uchar *serialized_form)
{
uchar type;
int geom_type;
LWPOINT *result;
uchar *loc = NULL;
POINTARRAY *pa;
LWDEBUG(2, "lwpoint_deserialize called");
result = (LWPOINT*) lwalloc(sizeof(LWPOINT)) ;
type = serialized_form[0];
geom_type = lwgeom_getType(type);
if ( geom_type != POINTTYPE)
{
lwerror("lwpoint_deserialize: attempt to deserialize a point which is really a %s", lwgeom_typename(geom_type));
return NULL;
}
result->type = type;
loc = serialized_form+1;
if (lwgeom_hasBBOX(type))
{
LWDEBUG(3, "lwpoint_deserialize: input has bbox");
result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
memcpy(result->bbox, loc, sizeof(BOX2DFLOAT4));
loc += sizeof(BOX2DFLOAT4);
}
else
{
result->bbox = NULL;
}
if ( lwgeom_hasSRID(type))
{
LWDEBUG(3, "lwpoint_deserialize: input has SRID");
result->SRID = lw_get_int32(loc);
loc += 4; /* type + SRID */
}
else
{
result->SRID = -1;
}
/* we've read the type (1 byte) and SRID (4 bytes, if present) */
pa = pointArray_construct(loc, TYPE_HASZ(type), TYPE_HASM(type), 1);
result->point = pa;
return result;
}
/*
* given the LWGEOM serialized form (or a pointer into a muli* one)
* construct a proper LWLINE.
* serialized_form should point to the 8bit type format (with type = 2)
* See serialized form doc
*/
LWLINE *
lwline_deserialize(uchar *serialized_form)
{
uchar type;
LWLINE *result;
uchar *loc =NULL;
uint32 npoints;
POINTARRAY *pa;
type = (uchar) serialized_form[0];
if ( lwgeom_getType(type) != LINETYPE)
{
lwerror("lwline_deserialize: attempt to deserialize a line which is really a %s", lwgeom_typename(type));
return NULL;
}
result = (LWLINE*) lwalloc(sizeof(LWLINE)) ;
result->type = type;
loc = serialized_form+1;
if (lwgeom_hasBBOX(type))
{
LWDEBUG(3, "lwline_deserialize: input has bbox");
result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
memcpy(result->bbox, loc, sizeof(BOX2DFLOAT4));
loc += sizeof(BOX2DFLOAT4);
}
else
{
result->bbox = NULL;
/*lwnotice("line has NO bbox"); */
}
if ( lwgeom_hasSRID(type))
{
/*lwnotice("line has srid"); */
result->SRID = lw_get_int32(loc);
loc +=4; /* type + SRID */
}
else
{
/*lwnotice("line has NO srid"); */
result->SRID = -1;
}
/* we've read the type (1 byte) and SRID (4 bytes, if present) */
npoints = lw_get_uint32(loc);
/*lwnotice("line npoints = %d", npoints); */
loc +=4;
pa = pointArray_construct(loc, TYPE_HASZ(type), TYPE_HASM(type), npoints);
result->points = pa;
return result;
}
/*
* given the LWGEOM serialized form (or a point into a multi* one)
* construct a proper LWCIRCSTRING.
* serialized_form should point to the 8bit type format (with type = 8)
* See serialized form doc
*/
LWCIRCSTRING *
lwcircstring_deserialize(uchar *serialized_form)
{
uchar type;
LWCIRCSTRING *result;
uchar *loc=NULL;
uint32 npoints;
POINTARRAY *pa;
type = (uchar)serialized_form[0];
if (lwgeom_getType(type) != CIRCSTRINGTYPE)
{
lwerror("lwcircstring_deserialize: attempt to deserialize a circularstring which is really a %s", lwgeom_typename(type));
return NULL;
}
result = (LWCIRCSTRING*) lwalloc(sizeof(LWCIRCSTRING));
result->type = type;
loc = serialized_form + 1;
if (lwgeom_hasBBOX(type))
{
LWDEBUG(3, "lwcircstring_deserialize: input has bbox");
result->bbox = lwalloc(sizeof(BOX2DFLOAT4));
memcpy(result->bbox, loc, sizeof(BOX2DFLOAT4));
loc += sizeof(BOX2DFLOAT4);
}
else
{
LWDEBUG(3, "lwcircstring_deserialize: input lacks bbox");
result->bbox = NULL;
}
if (lwgeom_hasSRID(type))
{
LWDEBUG(3, "lwcircstring_deserialize: input has srid");
result->SRID = lw_get_int32(loc);
loc += 4; /* type + SRID */
}
else
{
LWDEBUG(3, "lwcircstring_deserialize: input lacks srid");
result->SRID = -1;
}
/* we've read the type (1 byte) and SRID (4 bytes, if present) */
npoints = lw_get_uint32(loc);
LWDEBUGF(3, "circstring npoints = %d", npoints);
loc += 4;
pa = pointArray_construct(loc, TYPE_HASZ(type), TYPE_HASM(type), npoints);
result->points = pa;
return result;
}
