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phoebe.util
Class PEdgeEndIcon

java.lang.ObjectPPath
phoebe.util.PEdgeEndIcon
- Direct Known Subclasses:
- PArrowIcon, PCircleIcon, PDiamondIcon, PTIcon
- public class PEdgeEndIcon
- extends PPath
Base class that encapsulates some of the basic functionality needed to draw an icon. This class should be extended by any new icon. If this class is instantiated directly, it will not draw anything and will not appear in any way on the screen.
| Field Summary | |
protected double |
lineLen
The length of the edge. |
protected double |
newX
The new X position for the end of the edge. |
protected double |
newY
The new X position for the end of the edge. |
protected java.awt.geom.Point2D |
source
The source node point. |
protected java.awt.geom.Point2D |
target
The target node point. |
| Constructor Summary | |
PEdgeEndIcon(java.awt.geom.Point2D s,
java.awt.geom.Point2D t)
Constructor. |
|
| Method Summary | |
protected void |
calcLineLen()
Calculates the length of the edge using the pythagorean theorem. |
void |
drawIcon(java.awt.geom.Point2D s,
java.awt.geom.Point2D t)
Draws the icon. |
double |
getNewX()
Returns the new X position of the updated end point of the edge. |
double |
getNewY()
Returns the new Y position of the updated end point of the edge. |
protected void |
paint(PPaintContext paintContext)
|
java.lang.String |
toString()
Convert this Object to a human-readable String. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
source
protected java.awt.geom.Point2D source
- The source node point.
target
protected java.awt.geom.Point2D target
- The target node point. The icon is always drawn at the this point. To
draw the icon at the opposite node, instantiate the child class with
the nodes swapped.
newX
protected double newX
- The new X position for the end of the edge. Since we don't (usually)
want the edge as it is currently drawn to be drawn through the icon,
we have to adjust the endpoint of the edge to accomodate the icon.
This point must be updated (usually by drawIcon) when the icon gets
drawn.
newY
protected double newY
- The new X position for the end of the edge. Since we don't (usually)
want the edge as it is currently drawn to be drawn through the icon,
we have to adjust the endpoint of the edge to accomodate the icon.
This point must be updated (usually by drawIcon) when the icon gets
drawn.
lineLen
protected double lineLen
- The length of the edge.
| Constructor Detail |
PEdgeEndIcon
public PEdgeEndIcon(java.awt.geom.Point2D s, java.awt.geom.Point2D t)
- Constructor.
| Method Detail |
drawIcon
public void drawIcon(java.awt.geom.Point2D s, java.awt.geom.Point2D t)
- Draws the icon. This method should be overridden by any child class to
actually draw the icon.
calcLineLen
protected void calcLineLen()
- Calculates the length of the edge using the pythagorean theorem.
getNewX
public double getNewX()
- Returns the new X position of the updated end point of the edge. Since
we don't (usually) want the edge as it is currently drawn to be drawn
through the icon, we have to adjust the endpoint of the edge to
accomodate the icon.
getNewY
public double getNewY()
- Returns the new Y position of the updated end point of the edge. Since
we don't (usually) want the edge as it is currently drawn to be drawn
through the icon, we have to adjust the endpoint of the edge to
accomodate the icon.
paint
protected void paint(PPaintContext paintContext)
toString
public java.lang.String toString()
- Description copied from class:
java.lang.Object - Convert this Object to a human-readable String.
There are no limits placed on how long this String
should be or what it should contain. We suggest you
make it as intuitive as possible to be able to place
it into System.out.println() 55
and such.
It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.
This method will be called when performing string concatenation with this object. If the result is
null, string concatenation will instead use"null".The default implementation returns
getClass().getName() + "@" + Integer.toHexString(hashCode()).
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