mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-24 09:02:37 +00:00
62203821fa
serialized_lwgeom_size lwgeom_size_subgeom lwgeom_size_point lwgeom_size_line lwgeom_size_circstring lwgeom_size_poly lwgeom_size_triangle lwgeom_deserialize lwpoint_deserialize lwline_deserialize lwpoly_deserialize lwtriangle_deserialize lwcircstring_deserialize lwmpoint_deserialize lwmline_deserialize lwmpoly_deserialize lwcollection_deserialize lwcompound_deserialize lwcurvepoly_deserialize lwmcurve_deserialize lwmsurface_deserialize lwpsurface_deserialize lwtin_deserialize printMULTI lwgeom_inspect lwgeom_getpoint_inspected lwgeom_getpoint lwgeom_getline_inspected lwgeom_getline lwgeom_getpoly lwgeom_getpoly_inspected lwgeom_gettriangle lwgeom_gettriangle_inspected lwgeom_getcircstring_inspected lwgeom_getgeom_inspected lwgeom_getsubgeometry lwgeom_getsubgeometry_inspected lwgeom_getsubtype lwgeom_getsubtype_inspected lwgeom_getnumgeometries lwgeom_getnumgeometries_inspected git-svn-id: http://svn.osgeo.org/postgis/trunk@8018 b70326c6-7e19-0410-871a-916f4a2858ee
101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/**********************************************************************
|
|
*
|
|
* PostGIS - Spatial Types for PostgreSQL
|
|
* http://postgis.refractions.net
|
|
*
|
|
* Copyright (C) 2001-2006 Refractions Research Inc.
|
|
*
|
|
* 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>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "liblwgeom_internal.h"
|
|
#include "lwgeom_log.h"
|
|
|
|
|
|
|
|
int
|
|
lwcompound_is_closed(const LWCOMPOUND *compound)
|
|
{
|
|
size_t size;
|
|
int npoints=0;
|
|
|
|
if (!FLAGS_GET_Z(compound->flags))
|
|
size = sizeof(POINT2D);
|
|
else size = sizeof(POINT3D);
|
|
|
|
if (compound->geoms[compound->ngeoms - 1]->type == CIRCSTRINGTYPE)
|
|
npoints = ((LWCIRCSTRING *)compound->geoms[compound->ngeoms - 1])->points->npoints;
|
|
else if (compound->geoms[compound->ngeoms - 1]->type == LINETYPE)
|
|
npoints = ((LWLINE *)compound->geoms[compound->ngeoms - 1])->points->npoints;
|
|
|
|
if ( memcmp(getPoint_internal( (POINTARRAY *)compound->geoms[0]->data, 0),
|
|
getPoint_internal( (POINTARRAY *)compound->geoms[compound->ngeoms - 1]->data,
|
|
npoints - 1),
|
|
size) ) return LW_FALSE;
|
|
|
|
return LW_TRUE;
|
|
}
|
|
|
|
double lwcompound_length(const LWCOMPOUND *comp)
|
|
{
|
|
double length = 0.0;
|
|
LWLINE *line;
|
|
if ( lwgeom_is_empty((LWGEOM*)comp) )
|
|
return 0.0;
|
|
line = lwcompound_segmentize(comp, 32);
|
|
length = lwline_length(line);
|
|
lwline_free(line);
|
|
return length;
|
|
}
|
|
|
|
double lwcompound_length_2d(const LWCOMPOUND *comp)
|
|
{
|
|
double length = 0.0;
|
|
LWLINE *line;
|
|
if ( lwgeom_is_empty((LWGEOM*)comp) )
|
|
return 0.0;
|
|
line = lwcompound_segmentize(comp, 32);
|
|
length = lwline_length_2d(line);
|
|
lwline_free(line);
|
|
return length;
|
|
}
|
|
|
|
int lwcompound_add_lwgeom(LWCOMPOUND *comp, LWGEOM *geom)
|
|
{
|
|
LWCOLLECTION *col = (LWCOLLECTION*)comp;
|
|
|
|
/* Empty things can't continuously join up with other things */
|
|
if ( lwgeom_is_empty(geom) )
|
|
{
|
|
LWDEBUG(4, "Got an empty component for a compound curve!");
|
|
return LW_FAILURE;
|
|
}
|
|
|
|
if( col->ngeoms > 0 )
|
|
{
|
|
POINT4D last, first;
|
|
/* First point of the component we are adding */
|
|
LWLINE *newline = (LWLINE*)geom;
|
|
/* Last point of the previous component */
|
|
LWLINE *prevline = (LWLINE*)(col->geoms[col->ngeoms-1]);
|
|
|
|
getPoint4d_p(newline->points, 0, &first);
|
|
getPoint4d_p(prevline->points, prevline->points->npoints-1, &last);
|
|
|
|
if ( !(FP_EQUALS(first.x,last.x) && FP_EQUALS(first.y,last.y)) )
|
|
{
|
|
LWDEBUG(4, "Components don't join up end-to-end!");
|
|
LWDEBUGF(4, "first pt (%g %g %g %g) last pt (%g %g %g %g)", first.x, first.y, first.z, first.m, last.x, last.y, last.z, last.m);
|
|
return LW_FAILURE;
|
|
}
|
|
}
|
|
|
|
col = lwcollection_add_lwgeom(col, geom);
|
|
return LW_SUCCESS;
|
|
}
|