f2543c997b
Enable allocation testing for other fuzzers. Closes #4387 Closes https://github.com/postgis/postgis/pull/462 git-svn-id: http://svn.osgeo.org/postgis/trunk@17726 b70326c6-7e19-0410-871a-916f4a2858ee
130 lines
3.3 KiB
C
130 lines
3.3 KiB
C
/**********************************************************************
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*
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* PostGIS - Spatial Types for PostgreSQL
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* http://postgis.net
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*
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* PostGIS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* PostGIS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
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*
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**********************************************************************
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*
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* Copyright 2001-2006 Refractions Research Inc.
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*
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**********************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "liblwgeom_internal.h"
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void
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lwmline_release(LWMLINE *lwmline)
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{
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lwgeom_release(lwmline_as_lwgeom(lwmline));
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}
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LWMLINE *
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lwmline_construct_empty(int32_t srid, char hasz, char hasm)
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{
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LWMLINE *ret = (LWMLINE*)lwcollection_construct_empty(MULTILINETYPE, srid, hasz, hasm);
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return ret;
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}
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LWMLINE* lwmline_add_lwline(LWMLINE *mobj, const LWLINE *obj)
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{
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return (LWMLINE*)lwcollection_add_lwgeom((LWCOLLECTION*)mobj, (LWGEOM*)obj);
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}
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/**
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* Re-write the measure ordinate (or add one, if it isn't already there) interpolating
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* the measure between the supplied start and end values.
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*/
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LWMLINE*
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lwmline_measured_from_lwmline(const LWMLINE *lwmline, double m_start, double m_end)
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{
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uint32_t i = 0;
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int hasm = 0, hasz = 0;
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double length = 0.0, length_so_far = 0.0;
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double m_range = m_end - m_start;
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LWGEOM **geoms = NULL;
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if ( lwmline->type != MULTILINETYPE )
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{
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lwerror("lwmline_measured_from_lmwline: only multiline types supported");
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return NULL;
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}
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hasz = FLAGS_GET_Z(lwmline->flags);
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hasm = 1;
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/* Calculate the total length of the mline */
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for ( i = 0; i < lwmline->ngeoms; i++ )
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{
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LWLINE *lwline = (LWLINE*)lwmline->geoms[i];
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if ( lwline->points && lwline->points->npoints > 1 )
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{
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length += ptarray_length_2d(lwline->points);
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}
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}
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if ( lwgeom_is_empty((LWGEOM*)lwmline) )
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{
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return (LWMLINE*)lwcollection_construct_empty(MULTILINETYPE, lwmline->srid, hasz, hasm);
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}
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geoms = lwalloc(sizeof(LWGEOM*) * lwmline->ngeoms);
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for ( i = 0; i < lwmline->ngeoms; i++ )
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{
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double sub_m_start, sub_m_end;
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double sub_length = 0.0;
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LWLINE *lwline = (LWLINE*)lwmline->geoms[i];
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if ( lwline->points && lwline->points->npoints > 1 )
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{
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sub_length = ptarray_length_2d(lwline->points);
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}
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sub_m_start = (m_start + m_range * length_so_far / length);
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sub_m_end = (m_start + m_range * (length_so_far + sub_length) / length);
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geoms[i] = (LWGEOM*)lwline_measured_from_lwline(lwline, sub_m_start, sub_m_end);
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length_so_far += sub_length;
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}
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return (LWMLINE*)lwcollection_construct(lwmline->type, lwmline->srid, NULL, lwmline->ngeoms, geoms);
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}
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void lwmline_free(LWMLINE *mline)
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{
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if (!mline)
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return;
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if (mline->bbox)
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lwfree(mline->bbox);
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if (mline->geoms)
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{
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for (uint32_t i = 0; i < mline->ngeoms; i++)
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if (mline->geoms[i])
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lwline_free(mline->geoms[i]);
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lwfree(mline->geoms);
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}
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lwfree(mline);
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}
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