Representation of a graph's grid layout. More...

#include <ogdf/basic/GridLayout.h>

Inheritance diagram for ogdf::GridLayout:

Public Member Functions
	GridLayout ()
	Creates an instance of a grid layout (associated with no graph).

	GridLayout (const Graph &G)
	Creates an instance of a grid layout associated with `G`.

virtual	~GridLayout ()
	Destruction.

EdgeArray< IPolyline > &	bends ()
	Returns a reference to the array storing the bend points of edges.

const EdgeArray< IPolyline > &	bends () const
	Returns a reference to the array storing the bend points of edges.

IPolyline &	bends (edge e)
	Returns a reference to the bend point list of edge `e`.

const IPolyline &	bends (edge e) const
	Returns a reference to the bend point list of edge `e`.

bool	checkLayout ()
	Checks if the grid layout is reasonable.

void	compactAllBends ()
	Removes all unnecessary bends.

void	computeBoundingBox (int &xmin, int &xmax, int &ymin, int &ymax)
	Computes the bounding box of the grid layout.

IPolyline	getCompactBends (edge e) const
	Returns the bend point list of edge `e` without unnecessary bends.

void	init ()
	Initializes the grid layout for no graph (frees memory).

void	init (const Graph &G)
	Initializes the grid layout for graph `G`.

int	manhattanEdgeLength (edge e) const

int	maxManhattanEdgeLength () const

int	numberOfBends () const
	Computes the total number of bends in the grid layout.

IPolyline	polyline (edge e) const
	Returns the polyline of edge `e` (including start and end point!).

virtual void	remap (Layout &drawing)
	Transforms the grid layout to a layout.

double	totalEdgeLength () const
	Computes the total (euclidean) edge length of the grid layout.

int	totalManhattanEdgeLength () const
	Computes the total manhattan edge length of the grid layout.

NodeArray< int > &	x ()
	Returns a reference to the array storing the x-coordinates of nodes.

const NodeArray< int > &	x () const
	Returns a reference to the array storing the x-coordinates of nodes.

int &	x (node v)
	Returns a reference to the x-coordinate of node `v`.

const int &	x (node v) const
	Returns a reference to the x-coordinate of node `v`.

NodeArray< int > &	y ()
	Returns a reference to the array storing the y-coordinates of nodes.

const NodeArray< int > &	y () const
	Returns a reference to the array storing the y-coordinates of nodes.

int &	y (node v)
	Returns a reference to the y-coordinate of node `v`.

const int &	y (node v) const
	Returns a reference to the y-coordinate of node `v`.

Static Public Member Functions
static double	euclideanDistance (const IPoint &ip1, const IPoint &ip2)

static int	manhattanDistance (const IPoint &ip1, const IPoint &ip2)

Protected Attributes
EdgeArray< IPolyline >	m_bends
	The bend points of edges.

NodeArray< int >	m_x
	The x-coordinates of nodes.

NodeArray< int >	m_y
	The y-coordinates of nodes.

Static Private Member Functions
static void	compact (IPolyline &ip)

static bool	isRedundant (IPoint &p1, IPoint &p2, IPoint &p3)

Detailed Description

Representation of a graph's grid layout.

Definition at line 47 of file GridLayout.h.

Constructor & Destructor Documentation

◆ GridLayout() [1/2]

ogdf::GridLayout::GridLayout ( )

inline

Creates an instance of a grid layout (associated with no graph).

Definition at line 50 of file GridLayout.h.

◆ GridLayout() [2/2]

ogdf::GridLayout::GridLayout ( const Graph & G )

inlineexplicit

Creates an instance of a grid layout associated with G.

Definition at line 53 of file GridLayout.h.

◆ ~GridLayout()

virtual ogdf::GridLayout::~GridLayout ( )

inlinevirtual

Destruction.

Definition at line 56 of file GridLayout.h.

Member Function Documentation

◆ bends() [1/4]

EdgeArray< IPolyline > & ogdf::GridLayout::bends ( )

inline

Returns a reference to the array storing the bend points of edges.

Definition at line 74 of file GridLayout.h.

◆ bends() [2/4]

const EdgeArray< IPolyline > & ogdf::GridLayout::bends ( ) const

inline

Returns a reference to the array storing the bend points of edges.

Definition at line 71 of file GridLayout.h.

◆ bends() [3/4]

IPolyline & ogdf::GridLayout::bends ( edge e )

inline

Returns a reference to the bend point list of edge e.

Definition at line 92 of file GridLayout.h.

◆ bends() [4/4]

const IPolyline & ogdf::GridLayout::bends ( edge e ) const

inline

Returns a reference to the bend point list of edge e.

Definition at line 89 of file GridLayout.h.

◆ checkLayout()

bool ogdf::GridLayout::checkLayout ( )

Checks if the grid layout is reasonable.

In particular, the following checks are performed:

All nodes have to be assigned to distinct grid points.
All bend points have to be assigned to distinct points.
No bend point coincides with the position of a node.

◆ compact()

static void ogdf::GridLayout::compact ( IPolyline & ip )

staticprivate

◆ compactAllBends()

void ogdf::GridLayout::compactAllBends ( )

Removes all unnecessary bends.

◆ computeBoundingBox()

void ogdf::GridLayout::computeBoundingBox	(	int &	xmin,
		int &	xmax,
		int &	ymin,
		int &	ymax
	)

Computes the bounding box of the grid layout.

The returned bounding box is (0,0,0,0) if the associated graph is empty or no graph is associated with the grid layout.

Parameters

xmin	is assigned the minimum x-coordinate in the grid layout.
xmax	is assigned the maximum x-coordinate in the grid layout.
ymin	is assigned the minimum y-coordinate in the grid layout.
ymax	is assigned the maximum y-coordinate in the grid layout.

◆ euclideanDistance()

static double ogdf::GridLayout::euclideanDistance	(	const IPoint &	ip1,
		const IPoint &	ip2
	)

static

◆ getCompactBends()

IPolyline ogdf::GridLayout::getCompactBends ( edge e ) const

Returns the bend point list of edge e without unnecessary bends.

◆ init() [1/2]

void ogdf::GridLayout::init ( )

inline

Initializes the grid layout for no graph (frees memory).

Definition at line 105 of file GridLayout.h.

◆ init() [2/2]

void ogdf::GridLayout::init ( const Graph & G )

inline

Initializes the grid layout for graph G.

Definition at line 98 of file GridLayout.h.

◆ isRedundant()

static bool ogdf::GridLayout::isRedundant	(	IPoint &	p1,
		IPoint &	p2,
		IPoint &	p3
	)

staticprivate

◆ manhattanDistance()

static int ogdf::GridLayout::manhattanDistance	(	const IPoint &	ip1,
		const IPoint &	ip2
	)

static

◆ manhattanEdgeLength()

int ogdf::GridLayout::manhattanEdgeLength ( edge e ) const

◆ maxManhattanEdgeLength()

int ogdf::GridLayout::maxManhattanEdgeLength ( ) const

◆ numberOfBends()

int ogdf::GridLayout::numberOfBends ( ) const

Computes the total number of bends in the grid layout.

◆ polyline()

IPolyline ogdf::GridLayout::polyline ( edge e ) const

Returns the polyline of edge e (including start and end point!).

◆ remap()

virtual void ogdf::GridLayout::remap ( Layout & drawing )

virtual

Transforms the grid layout to a layout.

This implementation only copies the grid coordinates to drawing; the derived class GridLayoutMapped performs the actual transformation of coordinates.

Reimplemented in ogdf::GridLayoutMapped.

◆ totalEdgeLength()

double ogdf::GridLayout::totalEdgeLength ( ) const

Computes the total (euclidean) edge length of the grid layout.

◆ totalManhattanEdgeLength()

int ogdf::GridLayout::totalManhattanEdgeLength ( ) const

Computes the total manhattan edge length of the grid layout.

◆ x() [1/4]

NodeArray< int > & ogdf::GridLayout::x ( )

inline

Returns a reference to the array storing the x-coordinates of nodes.

Definition at line 62 of file GridLayout.h.

◆ x() [2/4]

const NodeArray< int > & ogdf::GridLayout::x ( ) const

inline

Returns a reference to the array storing the x-coordinates of nodes.

Definition at line 59 of file GridLayout.h.

◆ x() [3/4]

int & ogdf::GridLayout::x ( node v )

inline

Returns a reference to the x-coordinate of node v.

Definition at line 80 of file GridLayout.h.

◆ x() [4/4]

const int & ogdf::GridLayout::x ( node v ) const

inline

Returns a reference to the x-coordinate of node v.

Definition at line 77 of file GridLayout.h.

◆ y() [1/4]

NodeArray< int > & ogdf::GridLayout::y ( )

inline

Returns a reference to the array storing the y-coordinates of nodes.

Definition at line 68 of file GridLayout.h.

◆ y() [2/4]

const NodeArray< int > & ogdf::GridLayout::y ( ) const

inline

Returns a reference to the array storing the y-coordinates of nodes.

Definition at line 65 of file GridLayout.h.

◆ y() [3/4]

int & ogdf::GridLayout::y ( node v )

inline

Returns a reference to the y-coordinate of node v.

Definition at line 86 of file GridLayout.h.

◆ y() [4/4]

const int & ogdf::GridLayout::y ( node v ) const

inline

Returns a reference to the y-coordinate of node v.

Definition at line 83 of file GridLayout.h.

Member Data Documentation

◆ m_bends

EdgeArray<IPolyline> ogdf::GridLayout::m_bends

protected

The bend points of edges.

Definition at line 165 of file GridLayout.h.

◆ m_x

NodeArray<int> ogdf::GridLayout::m_x

protected

The x-coordinates of nodes.

Definition at line 163 of file GridLayout.h.

◆ m_y

NodeArray<int> ogdf::GridLayout::m_y

protected

The y-coordinates of nodes.

Definition at line 164 of file GridLayout.h.

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

include/ogdf/basic/GridLayout.h

OpenGraph DrawingFramework

Public Member Functions

Static Public Member Functions

Protected Attributes

Static Private Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ GridLayout() [1/2]

◆ GridLayout() [2/2]

◆ ~GridLayout()

Member Function Documentation

◆ bends() [1/4]

◆ bends() [2/4]

◆ bends() [3/4]

◆ bends() [4/4]

◆ checkLayout()

◆ compact()

◆ compactAllBends()

◆ computeBoundingBox()

◆ euclideanDistance()

◆ getCompactBends()

◆ init() [1/2]

◆ init() [2/2]

◆ isRedundant()

◆ manhattanDistance()

◆ manhattanEdgeLength()

◆ maxManhattanEdgeLength()

◆ numberOfBends()

◆ polyline()

◆ remap()

◆ totalEdgeLength()

◆ totalManhattanEdgeLength()

◆ x() [1/4]

◆ x() [2/4]

◆ x() [3/4]

◆ x() [4/4]

◆ y() [1/4]

◆ y() [2/4]

◆ y() [3/4]

◆ y() [4/4]

Member Data Documentation

◆ m_bends

◆ m_x

◆ m_y

Open
Graph Drawing
Framework