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/**********************************************************************
*
* PostGIS - Spatial Types for PostgreSQL
* http://postgis.net
*
* PostGIS is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* PostGIS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************
*
* Copyright (C) 2024 Sandro Santilli <strk@kbt.io>
*
**********************************************************************/
#ifndef _LWT_EDGEEND_H
#define _LWT_EDGEEND_H 1
#include "liblwgeom.h"
#include "liblwgeom_topo.h"
/* Single edge end */
typedef struct LWT_EDGEEND_t {
const LWT_ISO_EDGE *edge; /* Edge this edgeend comes from (parent edge) */
POINT2D p0; /* point incident to the node */
POINT2D p1; /* point away from the node */
int outgoing; /* 1 if p0 is the start_node of the parent edge, 0 if it is the end_node of it */
double azimuth; /* azimuth of the edge end (p0 to p1) */
} LWT_EDGEEND;
/*
* @param edge an edge, needs have a geometry
* @param outgoing 1 if p0 is the start_node of the parent edge, 0 if it is the end_node of it
*/
LWT_EDGEEND *lwt_edgeEnd_fromEdge( const LWT_ISO_EDGE *edge, int outgoing );
/*
* Release memory owned by an edgeend
*/
void lwt_edgeEnd_release( LWT_EDGEEND *end );
#endif /* !defined _LWT_EDGEEND_H */
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