#include <EdgeNodingBuilder.h>

Public Member Functions
	EdgeNodingBuilder (const PrecisionModel p_pm, noding::Noder p_customNoder)
void	setClipEnvelope (const Envelope *clipEnv)
bool	hasEdgesFor (uint8_t geomIndex) const
std::vector< Edge * >	build (const Geometry geom0, const Geometry geom1)

Detailed Description

Builds a set of noded, unique, labelled Edges from the edges of the two input geometries.

It performs the following steps:

Extracts input edges, and attaches topological information
if clipping is enabled, handles clipping or limiting input geometry
chooses a noding::Noder based on provided precision model, unless a custom one is supplied
calls the chosen noding::Noder, with precision model
removes any fully collapsed noded edges
builds Edges and merges them

Author: mdavis

Constructor & Destructor Documentation

◆ EdgeNodingBuilder()

geos::operation::overlayng::EdgeNodingBuilder::EdgeNodingBuilder	(	const PrecisionModel *	p_pm,
		noding::Noder *	p_customNoder )

inline

Creates a new builder, with an optional custom noder. If the noder is not provided, a suitable one will be used based on the supplied precision model.

Member Function Documentation

◆ build()

std::vector< Edge * > geos::operation::overlayng::EdgeNodingBuilder::build	(	const Geometry *	geom0,
		const Geometry *	geom1 )

Creates a set of labelled {Edge}s. representing the fully noded edges of the input geometries. Coincident edges (from the same or both geometries) are merged along with their labels into a single unique, fully labelled edge.

Parameters

geom0	the first geometry
geom1	the second geometry

Returns: the noded, merged, labelled edges

◆ hasEdgesFor()

bool geos::operation::overlayng::EdgeNodingBuilder::hasEdgesFor ( uint8_t geomIndex ) const

Reports whether there are noded edges for the given input geometry. If there are none, this indicates that either the geometry was empty, or has completely collapsed (because it is smaller than the noding precision).