edu.uci.ics.jung.visualization.renderers
Class BasicEdgeArrowRenderingSupport<V,E>

java.lang.Object
  edu.uci.ics.jung.visualization.renderers.BasicEdgeArrowRenderingSupport<V,E>

All Implemented Interfaces:

EdgeArrowRenderingSupport<V,E>

public class BasicEdgeArrowRenderingSupport<V,E>
extends Object
implements EdgeArrowRenderingSupport<V,E>

Constructor Summary

BasicEdgeArrowRenderingSupport()

Method Summary

AffineTransform	getArrowTransform(RenderContext<V,E> rc, Line2D edgeShape, Shape vertexShape) This is used for the arrow of a directed and for one of the arrows for non-directed edges Get a transform to place the arrow shape on the passed edge at the point where it intersects the passed shape
AffineTransform	getArrowTransform(RenderContext<V,E> rc, Shape edgeShape, Shape vertexShape) Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.
protected Line2D	getFirstOutsideSegment(Line2D line, Shape shape) Passed Line's point1 must be inside the passed shape or an IllegalArgumentException is thrown
protected Line2D	getLastOutsideSegment(Line2D line, Shape shape) Passed Line's point2 must be inside the passed shape or an IllegalArgumentException is thrown
protected AffineTransform	getReverseArrowTransform(RenderContext<V,E> rc, Line2D edgeShape, Shape vertexShape) This is used for the reverse-arrow of a non-directed edge get a transform to place the arrow shape on the passed edge at the point where it intersects the passed shape
AffineTransform	getReverseArrowTransform(RenderContext<V,E> rc, Shape edgeShape, Shape vertexShape) Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.
AffineTransform	getReverseArrowTransform(RenderContext<V,E> rc, Shape edgeShape, Shape vertexShape, boolean passedGo) Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.
protected void	subdivide(Line2D src, Line2D left, Line2D right) divide a Line2D into 2 new Line2Ds that are returned in the passed left and right instances, if non-null

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicEdgeArrowRenderingSupport

public BasicEdgeArrowRenderingSupport()

Method Detail

getArrowTransform

public AffineTransform getArrowTransform(RenderContext<V,E> rc,
                                         Shape edgeShape,
                                         Shape vertexShape)

Description copied from interface: EdgeArrowRenderingSupport

Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.

Specified by:

getArrowTransform in interface EdgeArrowRenderingSupport<V,E>

getReverseArrowTransform

public AffineTransform getReverseArrowTransform(RenderContext<V,E> rc,
                                                Shape edgeShape,
                                                Shape vertexShape)

Description copied from interface: EdgeArrowRenderingSupport

Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.

Specified by:

getReverseArrowTransform in interface EdgeArrowRenderingSupport<V,E>

getReverseArrowTransform

public AffineTransform getReverseArrowTransform(RenderContext<V,E> rc,
                                                Shape edgeShape,
                                                Shape vertexShape,
                                                boolean passedGo)

Description copied from interface: EdgeArrowRenderingSupport

Returns a transform to position the arrowhead on this edge shape at the point where it intersects the passed vertex shape.

The Loop edge is a special case because its staring point is not inside the vertex. The passedGo flag handles this case.

Specified by:

getReverseArrowTransform in interface EdgeArrowRenderingSupport<V,E>

passedGo - - used only for Loop edges

getArrowTransform

public AffineTransform getArrowTransform(RenderContext<V,E> rc,
                                         Line2D edgeShape,
                                         Shape vertexShape)

Description copied from interface: EdgeArrowRenderingSupport

This is used for the arrow of a directed and for one of the arrows for non-directed edges Get a transform to place the arrow shape on the passed edge at the point where it intersects the passed shape

Specified by:

getArrowTransform in interface EdgeArrowRenderingSupport<V,E>

Returns:

getReverseArrowTransform

protected AffineTransform getReverseArrowTransform(RenderContext<V,E> rc,
                                                   Line2D edgeShape,
                                                   Shape vertexShape)

This is used for the reverse-arrow of a non-directed edge get a transform to place the arrow shape on the passed edge at the point where it intersects the passed shape

Parameters:

edgeShape -

vertexShape -

Returns:

getLastOutsideSegment

protected Line2D getLastOutsideSegment(Line2D line,
                                       Shape shape)

Passed Line's point2 must be inside the passed shape or an IllegalArgumentException is thrown

Parameters:

line - line to subdivide

shape - shape to compare with line

Returns:

a line that intersects the shape boundary

Throws:

IllegalArgumentException - if the passed line's point1 is not inside the shape

getFirstOutsideSegment

protected Line2D getFirstOutsideSegment(Line2D line,
                                        Shape shape)

Passed Line's point1 must be inside the passed shape or an IllegalArgumentException is thrown

Parameters:

line - line to subdivide

shape - shape to compare with line

Returns:

a line that intersects the shape boundary

Throws:

IllegalArgumentException - if the passed line's point1 is not inside the shape

subdivide

protected void subdivide(Line2D src,
                         Line2D left,
                         Line2D right)

divide a Line2D into 2 new Line2Ds that are returned in the passed left and right instances, if non-null

Parameters:

src - the line to divide

left - the left side, or null

right - the right side, or null