Class GraphDrawingPack.DirEdgeStraight 
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Class GraphDrawingPack.DirEdgeStraight 

java.lang.Object
   |
   +----GraphDrawingPack.DirEdgeStraight
public class DirEdgeStraight
extends Object
implements EdgeDrawingInterface
DirEdgeStraight: implements all methods for drawing directed edges on canvas. Directed edges straight lines between two vertices with an arrow in the middle. The midpoint of the arc is the active area of the edge and is indicated by the EdgeShape. If there are two edges between a pair of vertices, two EdgeShapes are drawn.

Highlighted edges are red, and plain edges are black.

midx
midy
xs
ys

DirEdgeStraight(Edge)

EdgeinRect(double, double, double, double)
return true if active portion of this edge is in rectangle
drawEdge(GraphCanvas)
draw this edge on GraphCanvas
getShape()
return string name of edge shape
midx()
return x-value of midpoint
midy()
return y-value of midpoint
ptInEdge(GraphCanvas, double, double)
return true if pt(x,y) is in active portion of this edge
setShape(String)
set EdgeShape to Arrow
update()
recalculate drawing information for the edge

midx 
  public int midx
midy 
  public int midy
xs 
  public int xs[]
ys 
  public int ys[]

DirEdgeStraight 
  public DirEdgeStraight(Edge _e)

drawEdge 
  public void drawEdge(GraphCanvas gc)
draw this edge on GraphCanvas

ptInEdge 

  public boolean ptInEdge(GraphCanvas gc,
                          double x,
                          double y)
return true if pt(x,y) is in active portion of this edge

EdgeinRect 

  public boolean EdgeinRect(double x,
                            double y,
                            double x2,
                            double y2)
return true if active portion of this edge is in rectangle

setShape 

  public void setShape(String t)
set EdgeShape to Arrow

getShape 

  public String getShape()
return string name of edge shape

update 

  public void update()
recalculate drawing information for the edge

midx 

  public int midx()
return x-value of midpoint

midy 

  public int midy()
return y-value of midpoint 

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