org.ginsim.core.graph.view

Class ViewHelper

java.lang.Object

org.ginsim.core.graph.view.ViewHelper

public class ViewHelper
extends Object

Common logics to manage bounding boxes, anchor points and related tricks for edge routing. This should be used by the view renderer and the SVG export, which should provide more flexibility and consistency.

Author:

Aurelien Naldi

Field Summary

Fields

Modifier and Type	Field and Description
static Font	GRAPHFONT

Constructor Summary

Constructors

Constructor and Description
ViewHelper()

Method Summary

Modifier and Type	Method and Description
static Point2D	getIntersection(Rectangle bounds, Point target)
static Point	getIntersection(Rectangle box, Point point, boolean intersect, float width) Get the bounding box point to connect a box with an external point.
static org.ginsim.core.graph.view.PointList	getModifiedPoints(NodeAttributesReader nodeReader, EdgeAttributesReader edgeReader, Edge<?> edge, List<Point> modifiedPoints)
static List<Point>	getMovingPoints(MovingEdgeType type, int movex, int movey, NodeAttributesReader nreader, EdgeAttributesReader ereader, Edge<?> edge) Get the routing points for an edge which is affected by a move preview.
static List<Point>	getPoints(NodeAttributesReader nodeReader, EdgeAttributesReader edgeReader, Edge<?> edge) Route an edge: add automated intermediate points if needed, compute the points on the nodes bounding boxes.
static org.ginsim.core.graph.view.PointList	getPoints(Rectangle srcBounds, Rectangle targetBounds, List<Point> middlePoints, int w)
static Rectangle	getRectangle(int x1, int y1, int x2, int y2) Get a rectangle given its two angle points.
static Rectangle	getRectangle(Point lastPoint, Point draggedPoint) Get a rectangle given its two angle points.
static double	getRotationAngle(int dx, int dy) Get the rotation angle between a vector and the horizontal axis.
static void	trimPoints(Edge edge, List<Point> points, NodeAttributesReader nreader, EdgeAttributesReader ereader) Remove the first and last points if they are inside the source and target bounding box

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GRAPHFONT

public static final Font GRAPHFONT

Constructor Detail

ViewHelper

public ViewHelper()

Method Detail

getPoints

public static org.ginsim.core.graph.view.PointList getPoints(Rectangle srcBounds,
                                                             Rectangle targetBounds,
                                                             List<Point> middlePoints,
                                                             int w)

getIntersection

public static Point getIntersection(Rectangle box,
                                    Point point,
                                    boolean intersect,
                                    float width)

Get the bounding box point to connect a box with an external point.

Parameters:

box -

point -

intersect -

width -

Returns:

getIntersection

public static Point2D getIntersection(Rectangle bounds,
                                      Point target)

getPoints

public static List<Point> getPoints(NodeAttributesReader nodeReader,
                                    EdgeAttributesReader edgeReader,
                                    Edge<?> edge)

Route an edge: add automated intermediate points if needed, compute the points on the nodes bounding boxes.

Parameters:

nodeReader -

edgeReader -

edge -

Returns:

the list of points forming the edge

getMovingPoints

public static List<Point> getMovingPoints(MovingEdgeType type,
                                          int movex,
                                          int movey,
                                          NodeAttributesReader nreader,
                                          EdgeAttributesReader ereader,
                                          Edge<?> edge)

Get the routing points for an edge which is affected by a move preview. It is similar to the normal getPoint method, but some parts of the edge (the start or the end or the points) can be shifted independently.

Parameters:

type -

movex -

movey -

nreader -

ereader -

edge -

Returns:

getModifiedPoints

public static org.ginsim.core.graph.view.PointList getModifiedPoints(NodeAttributesReader nodeReader,
                                                                     EdgeAttributesReader edgeReader,
                                                                     Edge<?> edge,
                                                                     List<Point> modifiedPoints)

trimPoints

public static void trimPoints(Edge edge,
                              List<Point> points,
                              NodeAttributesReader nreader,
                              EdgeAttributesReader ereader)

Remove the first and last points if they are inside the source and target bounding box

Parameters:

nreader -

ereader -

edge -

getRotationAngle

public static double getRotationAngle(int dx,
                                      int dy)

Get the rotation angle between a vector and the horizontal axis.

Parameters:

dx -

dy -

Returns:

getRectangle

public static Rectangle getRectangle(Point lastPoint,
                                     Point draggedPoint)

Get a rectangle given its two angle points.

Parameters:

lastPoint -

draggedPoint -

Returns:

getRectangle

public static Rectangle getRectangle(int x1,
                                     int y1,
                                     int x2,
                                     int y2)

Get a rectangle given its two angle points.

Parameters:

x1 -

y1 -

x2 -

y2 -

Returns: