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

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

All Implemented Interfaces:

Renderer.Edge<V,E>

Direct Known Subclasses:

ReshapingEdgeRenderer

public class BasicEdgeRenderer<V,E>
extends Object
implements Renderer.Edge<V,E>

Nested Class Summary

Nested classes/interfaces inherited from interface edu.uci.ics.jung.visualization.renderers.Renderer.Edge

Renderer.Edge.NOOP

Constructor Summary

BasicEdgeRenderer()

Method Summary

protected void	drawSimpleEdge(RenderContext<V,E> rc, Layout<V,E> layout, E e) Draws the edge e, whose endpoints are at (x1,y1) and (x2,y2), on the graphics context g.
AffineTransform	getArrowTransform(RenderContext<V,E> rc, GeneralPath 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	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
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
AffineTransform	getReverseArrowTransform(RenderContext<V,E> rc, GeneralPath 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, GeneralPath 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 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
void	paintEdge(RenderContext<V,E> rc, Layout<V,E> layout, E e)
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

BasicEdgeRenderer

public BasicEdgeRenderer()

Method Detail

paintEdge

public void paintEdge(RenderContext<V,E> rc,
                      Layout<V,E> layout,
                      E e)

Specified by:

paintEdge in interface Renderer.Edge<V,E>

drawSimpleEdge

protected void drawSimpleEdge(RenderContext<V,E> rc,
                              Layout<V,E> layout,
                              E e)

Draws the edge e, whose endpoints are at (x1,y1) and (x2,y2), on the graphics context g. The Shape provided by the EdgeShapeFunction instance is scaled in the x-direction so that its width is equal to the distance between (x1,y1) and (x2,y2).

getArrowTransform

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

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

getReverseArrowTransform

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

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

getReverseArrowTransform

public AffineTransform getReverseArrowTransform(RenderContext<V,E> rc,
                                                GeneralPath 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.

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

Parameters:

edgeShape -

vertexShape -

passedGo - - used only for Loop edges

getArrowTransform

public 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

Parameters:

edgeShape -

vertexShape -

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