y.view
Class BezierEdgeRealizer

java.lang.Object
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  +--y.view.EdgeRealizer
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        +--y.view.BezierEdgeRealizer

All Implemented Interfaces:

EdgeLayout

public class BezierEdgeRealizer

extends EdgeRealizer

This realizer draws an edge as a bezier spline curve. The bends are interpreted as controlpoints for the curve. The controlpoints of this curve type do not lie on the curve itself. Very 2nd segment (starting with the 3rd) formed by the control points is tangential to the curve at the point lying in the middle of that segment.

Field Summary

Fields inherited from class y.view.EdgeRealizer

bends, path

Constructor Summary

BezierEdgeRealizer()
Default Constructor.

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

Method Summary

protected void	calculatePath() Recalculates the bezier curve path after this realizer has been marked as dirty.
void	calcUnionRect(Rectangle2D r) Calculate the union of rectangle enclosed by this realizer and r.
boolean	contains(double x, double y) Tests whether or not the given coordinate hits the path of this realizer.
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.
protected void	paintHighlightedBends(Graphics2D gfx) Specialized paint method.
void	read(ObjectInputStream in) Reads in the serialized form of this realizer.
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) Writes out this realizer in a serialized form.

Methods inherited from class y.view.EdgeRealizer

addLabel, addPoint, appendBend, bendChanged, bendCount, bendPos, bends, bindEdge, clearBends, clearPoints, containsSeg, createCopy, createEdgeLabel, firstBend, getArrow, getBend, getEdge, getHighlightedBendColor, getLabel, getLabel, getLabelText, getLayer, getLineColor, getLineType, getMinBendCount, getPath, getPoint, getSelectionColor, getSelectionStroke, getSourceArrow, getSourceIntersection, getSourcePoint, getSourcePort, getSourceRealizer, getTargetArrow, getTargetIntersection, getTargetPoint, getTargetPort, getTargetRealizer, intersects, isDirty, isSelected, isVisible, labelCount, lastBend, paint, paintArrows, paintLabels, paintPorts, paintSloppy, pathIntersects, pointCount, recalculateFeatures, removeLabel, setArrow, setDirty, setHighlightedBendColor, setLabelText, setLayer, setLineColor, setLineType, setPoint, setPorts, 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

BezierEdgeRealizer

public BezierEdgeRealizer()

Default Constructor.

BezierEdgeRealizer

public BezierEdgeRealizer(EdgeRealizer r)

Constrcts 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 neighbour

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 the underlying bezier-polygon 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

contains

public boolean contains(double x,
                        double y)

Tests whether or not the given coordinate hits the path of this realizer. The behaviour of this method depends on the selection state of this realizer. If unselected this hit-test will be performed on the bezier curve path. If selected the hit-test will be performed on the underlying bezier polyline.

Overrides:

contains in class EdgeRealizer

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 void calculatePath()

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

Specified by:

calculatePath in class EdgeRealizer

See Also:

EdgeRealizer.path

calcUnionRect

public void calcUnionRect(Rectangle2D r)

Calculate the union of rectangle enclosed by this realizer and r. For efficency reasons the result is returned by modifying r.

Overrides:

calcUnionRect in class EdgeRealizer

paintHighlightedBends

protected void paintHighlightedBends(Graphics2D gfx)

Specialized paint method. Highlights the controlpoints and underlying bezier-polypath if edge is selected

Overrides:

paintHighlightedBends in class EdgeRealizer

write

public void write(ObjectOutputStream out)
           throws IOException

Writes out this realizer in a serialized form.

Overrides:

write in class EdgeRealizer

IOException

read

public void read(ObjectInputStream in)
          throws IOException,
                 ClassNotFoundException

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

Overrides:

read in class EdgeRealizer

IOException

ClassNotFoundException