GEOS: geos::operation::sharedpaths::SharedPathsOp Class Reference

Public Types | Public Member Functions | Static Public Member Functions

# geos::operation::sharedpaths::SharedPathsOp Class Reference

Find shared paths among two linear Geometry objects. More...

`#include <SharedPathsOp.h>`

List of all members.

## Public Types
typedef std::vector < geom::LineString * > | PathList
| LineString vector (list of edges)
## Public Member Functions
| SharedPathsOp (const geom::Geometry &g1, const geom::Geometry &g2)
| Constructor.
void | getSharedPaths (PathList &sameDirection, PathList &oppositeDirection)
| Get shared paths.
## Static Public Member Functions
static void | sharedPathsOp (const geom::Geometry &g1, const geom::Geometry &g2, PathList &sameDirection, PathList &oppositeDirection)
| Find paths shared between two linear geometries.
static void | clearEdges (PathList &from)
| Delete all edges in the list.

## Detailed Description

Find shared paths among two linear Geometry objects.

For each shared path report if it direction is the same or opposite.

Paths reported as shared are given in the direction they appear in the first geometry.

Developed by Sandro Santilli (strk@keybit.net) for Faunalia (http://www.faunalia.it) with funding from Regione Toscana - Settore SISTEMA INFORMATIVO TERRITORIALE ED AMBIENTALE - for the project: "Sviluppo strumenti software per il trattamento di dati geografici basati su QuantumGIS e Postgis (CIG 0494241492)"

## Constructor & Destructor Documentation

geos::operation::sharedpaths::SharedPathsOp::SharedPathsOp | ( | const geom::Geometry & | g1,
|  | const geom::Geometry & | g2
| ) |  |

Constructor.

Parameters:

  g1 | First geometry. Must be linear.
  g2 | Second geometry. Must be linear.

## Member Function Documentation

void geos::operation::sharedpaths::SharedPathsOp::getSharedPaths | ( | PathList & | sameDirection,
|  | PathList & | oppositeDirection
| ) |  |

Get shared paths.

Parameters:

  sameDir | Shared edges having the same direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is tranferred.
  oppositeDir | Shared edges having the opposite direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is tranferred.

static void geos::operation::sharedpaths::SharedPathsOp::sharedPathsOp | ( | const geom::Geometry & | g1,
|  | const geom::Geometry & | g2,
|  | PathList & | sameDirection,
|  | PathList & | oppositeDirection
| ) |  | `[static]`

Find paths shared between two linear geometries.

Parameters:

  g1 | First geometry. Must be linear.
  g2 | Second geometry. Must be linear.
  sameDir | Shared edges having the same direction are pushed onto this vector. They'll be of type LineString. Ownership of the edges is tranferred.
  oppositeDir | Shared edges having the opposite direction are pushed onto this vector. They'll be of type geom::LineString. Ownership of the edges is tranferred.

The documentation for this class was generated from the following file:

- SharedPathsOp.h