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/**********************************************************************
* $Id: TopologyLocation.cpp,v 1.2 2004/07/02 13:28:26 strk Exp $
*
* GEOS - Geometry Engine Open Source
* http://geos.refractions.net
*
* Copyright (C) 2001-2002 Vivid Solutions Inc.
*
* This is free software; you can redistribute and/or modify it under
* the terms of the GNU Lesser General Public Licence as published
* by the Free Software Foundation.
* See the COPYING file for more information.
*
**********************************************************************
* $Log: TopologyLocation.cpp,v $
* Revision 1.2 2004/07/02 13:28:26 strk
* Fixed all #include lines to reflect headers layout change.
* Added client application build tips in README.
*
* Revision 1.1 2004/03/19 09:48:45 ybychkov
* "geomgraph" and "geomgraph/indexl" upgraded to JTS 1.4
*
* Revision 1.8 2003/11/07 01:23:42 pramsey
* Add standard CVS headers licence notices and copyrights to all cpp and h
* files.
*
*
**********************************************************************/
#include <geos/geomgraph.h>
namespace geos {
TopologyLocation::TopologyLocation(const vector<int>* newLocation){
location=new vector<int>();
init((int)newLocation->size());
}
TopologyLocation::TopologyLocation(){
location=NULL;
}
TopologyLocation::~TopologyLocation(){
if ( location )
{
location->clear();
delete location;
}
}
/**
* Constructs a TopologyLocation specifying how points on, to the left of, and to the
* right of some GraphComponent relate to some Geometry. Possible values for the
* parameters are Location.NULL, Location.EXTERIOR, Location.BOUNDARY,
* and Location.INTERIOR.
* @see Location
*/
TopologyLocation::TopologyLocation(int on, int left, int right) {
location=new vector<int>();
init(3);
(*location)[Position::ON]=on;
(*location)[Position::LEFT]=left;
(*location)[Position::RIGHT]=right;
}
TopologyLocation::TopologyLocation(int on) {
location=new vector<int>();
init(1);
(*location)[Position::ON]=on;
}
TopologyLocation::TopologyLocation(const TopologyLocation *gl) {
location=new vector<int>(gl->location->begin(),gl->location->end());
}
void TopologyLocation::init(int size){
location->resize(size);
setAllLocations(Location::UNDEF);
}
int TopologyLocation::get(int posIndex) const {
if (posIndex< (int)location->size()) return (*location)[posIndex];
return Location::UNDEF;
}
/**
* @return true if all locations are NULL
*/
bool TopologyLocation::isNull() const {
for (unsigned int i=0; i<location->size(); i++) {
if ((*location)[i]!=Location::UNDEF) return false;
}
return true;
}
/**
* @return true if any locations are NULL
*/
bool TopologyLocation::isAnyNull() const {
for (unsigned int i=0; i<location->size(); i++) {
if ((*location)[i]==Location::UNDEF) return true;
}
return false;
}
bool TopologyLocation::isEqualOnSide(const TopologyLocation &le, int locIndex) const {
return (*location)[locIndex]==(*(le.location))[locIndex];
}
bool TopologyLocation::isArea() const {
return location->size()>1;
}
bool TopologyLocation::isLine() const {
return location->size()==1;
}
void TopologyLocation::flip() {
if (location->size()<=1) return;
int temp=(*location)[Position::LEFT];
(*location)[Position::LEFT]=(*location)[Position::RIGHT];
(*location)[Position::RIGHT] = temp;
}
void TopologyLocation::setAllLocations(int locValue){
for (unsigned int i=0; i<location->size(); i++) {
(*location)[i]=locValue;
}
}
void TopologyLocation::setAllLocationsIfNull(int locValue){
for (unsigned int i=0; i<location->size(); i++) {
if ((*location)[i]==Location::UNDEF) (*location)[i]=locValue;
}
}
void TopologyLocation::setLocation(int locIndex, int locValue){
(*location)[locIndex]=locValue;
}
void TopologyLocation::setLocation(int locValue){
setLocation(Position::ON, locValue);
}
const vector<int>* TopologyLocation::getLocations() const {
return location;
}
void TopologyLocation::setLocations(int on, int left, int right) {
(*location)[Position::ON]=on;
(*location)[Position::LEFT]=left;
(*location)[Position::RIGHT]=right;
}
void TopologyLocation::setLocations(const TopologyLocation& gl){
for (unsigned int i=0; i<gl.location->size(); i++) {
(*location)[i]=(*(gl.location))[i];
}
}
bool TopologyLocation::allPositionsEqual(int loc) const {
for (unsigned int i=0; i<location->size(); i++) {
if ((*location)[i]!=loc) return false;
}
return true;
}
/**
* merge updates only the NULL attributes of this object
* with the attributes of another.
*/
void TopologyLocation::merge(const TopologyLocation* gl){
// if the src is an Area label & and the dest is not, increase the dest to be an Area
if (gl->location->size()>location->size()) {
vector<int> newLoc(3);
newLoc[Position::ON]=(*location)[Position::ON];
newLoc[Position::LEFT]=Location::UNDEF;
newLoc[Position::RIGHT]=Location::UNDEF;
location->swap(newLoc);
}
for (unsigned int i=0; i<location->size(); i++) {
if ((*location)[i]==Location::UNDEF && i<gl->location->size())
(*location)[i]=(*(gl->location))[i];
}
}
string TopologyLocation::toString() const {
string buf="";
if (location->size()>1) buf+=Location::toLocationSymbol((*location)[Position::LEFT]);
buf+=Location::toLocationSymbol((*location)[Position::ON]);
if (location->size()>1) buf+=Location::toLocationSymbol((*location)[Position::RIGHT]);
return buf;
}
}
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