y.view
Class SplineEdgeRealizer

java.lang.Object
  y.view.EdgeRealizer
      y.view.SplineEdgeRealizer

All Implemented Interfaces:

EdgeLayout

public class SplineEdgeRealizer
extends EdgeRealizer

This realizer draws an edge as a natural cubic spline curve. The bends are interpreted as control points for the curve. This curve type has the property that all control points actually lie on the curve itself.

Field Summary

Fields inherited from class y.view.EdgeRealizer

bends, path, PATH_CLIPPED_AT_SOURCE, PATH_CLIPPED_AT_SOURCE_AND_TARGET, PATH_CLIPPED_AT_TARGET, PATH_INVISBLE, PATH_UNCLIPPED

Constructor Summary

SplineEdgeRealizer()
Default Constructor.

SplineEdgeRealizer(EdgeRealizer r)
Constructs a new SplineEdgeRealizer as a copy of the given realizer.

Method Summary

protected byte	calculatePath(Point2D sourceIntersectionOut, Point2D targetIntersectionOut) Recalculates the spline path after this realizer has been marked as dirty.
int	containsSeg(double dx, double dy) like contains(), but returns number of the hit segment, 0 otherwise.
Bend	createBend(double x, double y, Bend refBend, int dir) Add a new Bend to the edge
EdgeRealizer	createCopy(EdgeRealizer er) Creates a copy of this realizer type that is initialized with the attributes of the given realizer.
Bend	insertBend(double x, double y) Adds a new bend to this realizer and returns it.
void	read(ObjectInputStream in) Deprecated. Use the GraphML format instead.
void	reInsertBend(Bend bend, Bend refBend, int dir) Reinserts a bend to the edge which had been removed before.
Bend	removeBend(Bend b) Removes a Bend of this realizer
void	write(ObjectOutputStream out) Deprecated. Use the GraphML format instead.

Methods inherited from class y.view.EdgeRealizer

addLabel, addPoint, appendBend, bendChanged, bendCount, bendPos, bends, bindEdge, calculateClippingAndIntersection, calcUnionRect, clearBends, clearPoints, contains, createCopy, createEdgeLabel, firstBend, getArrow, getArrowScaleFactor, getBend, getEdge, getHighlightedBendColor, getLabel, getLabel, getLabelText, getLayer, getLineColor, getLineType, getMinBendCount, getMouseInputEditorProvider, getPath, getPoint, getSelectionColor, getSelectionStroke, getSourceArrow, getSourceIntersection, getSourcePoint, getSourcePort, getSourceRealizer, getTargetArrow, getTargetIntersection, getTargetPoint, getTargetPort, getTargetRealizer, hasVisiblePath, intersects, isDirty, isPathClippedAtSource, isPathClippedAtTarget, isReversedPathRenderingEnabled, isSelected, isVisible, labelBoundsChanged, labelCount, lastBend, paint, paintArrows, paintBends, paintHighlightedBends, paintLabels, paintPorts, paintSloppy, pathIntersects, pointCount, recalculateFeatures, registerObstacles, removeLabel, removeLabel, repaint, setArrow, setDirty, setHighlightedBendColor, setLabelText, setLayer, setLineColor, setLineType, setPoint, setPorts, setReversedPathRenderingEnabled, setSelected, setSelectionColor, setSelectionStroke, setSourceArrow, setSourcePoint, setSourcePort, setTargetArrow, setTargetPoint, setTargetPort, setVisible

Methods inherited from class java.lang.Object

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

Constructor Detail

SplineEdgeRealizer

public SplineEdgeRealizer()

Default Constructor.

SplineEdgeRealizer

public SplineEdgeRealizer(EdgeRealizer r)

Constructs a new SplineEdgeRealizer as a copy of the given realizer. If the given realizer is not of the same type as this class only the known values will be copied.

Method Detail

createCopy

public EdgeRealizer createCopy(EdgeRealizer er)

Creates a copy of this realizer type that is initialized with the attributes of the given realizer.

Specified by:

createCopy in class EdgeRealizer

createBend

public Bend createBend(double x,
                       double y,
                       Bend refBend,
                       int dir)

Add a new Bend to the edge

Specified by:

createBend in class EdgeRealizer

Parameters:

x - X-coordinate of the Bend

y - Y-coordinate of the Bend

refBend - Bend which should be neighbor

dir - indicates if the new Bend should be added before (Graph.BEFORE) or after (Graph.AFTER) the refBend in the bend sequence of the edge

reInsertBend

public void reInsertBend(Bend bend,
                         Bend refBend,
                         int dir)

Description copied from class: EdgeRealizer

Reinserts a bend to the edge which had been removed before.

Specified by:

reInsertBend in class EdgeRealizer

Parameters:

bend - the bend to be reinserted

refBend - reference bend already contained in this realizer

dir - indicates whether the bend should be inserted before or after the reference bend.Allowed values are Graph.AFTER and Graph.BEFORE.

insertBend

public Bend insertBend(double x,
                       double y)

Adds a new bend to this realizer and returns it. If the given coordinate lies on an visible segment of the path, then the bend will be inserted in such a way that the segment splits in two parts. Otherwise the bend will be appended to the list of bends.

Specified by:

insertBend in class EdgeRealizer

Parameters:

x - X-coordinates of the bend

y - Y-coordinates of the bend

removeBend

public Bend removeBend(Bend b)

Removes a Bend of this realizer

Specified by:

removeBend in class EdgeRealizer

Parameters:

b - Bend to be removed

calculatePath

protected byte calculatePath(Point2D sourceIntersectionOut,
                             Point2D targetIntersectionOut)

Recalculates the spline path after this realizer has been marked as dirty.

Specified by:

calculatePath in class EdgeRealizer

Parameters:

sourceIntersectionOut - a Point2D instance that must be set by the implementation to point to the source intersection point unless the path is empty.

targetIntersectionOut - a Point2D instance that must be set by the implementation to point to the target intersection point unless the path is empty.

Returns:

either EdgeRealizer.PATH_UNCLIPPED, EdgeRealizer.PATH_CLIPPED_AT_SOURCE, EdgeRealizer.PATH_CLIPPED_AT_TARGET, or EdgeRealizer.PATH_CLIPPED_AT_SOURCE_AND_TARGET

See Also:

EdgeRealizer.path, EdgeRealizer.isPathClippedAtSource(), EdgeRealizer.isPathClippedAtTarget()

containsSeg

public int containsSeg(double dx,
                       double dy)

like contains(), but returns number of the hit segment, 0 otherwise.

Overrides:

containsSeg in class EdgeRealizer

write

public void write(ObjectOutputStream out)
           throws IOException

Deprecated. Use the GraphML format instead.

Writes out this realizer in a serialized form.

Overrides:

write in class EdgeRealizer

Throws:

IOException

read

public void read(ObjectInputStream in)
          throws IOException,
                 ClassNotFoundException

Deprecated. Use the GraphML format instead.

Reads in the serialized form of this realizer. The realizer must have been written out before by it's write(ObjectOutputStream) method.

Overrides:

read in class EdgeRealizer

Throws:

IOException

ClassNotFoundException