Sometimes it is necessary to place the
connection points on a rectangle smaller or larger than the
bounding box, possibly in a nonsymmetric way. For instance, it can
happen when labels are displayed below or above nodes.
You can modify the position of the connection points of the links
by providing a class that implements the IlvLinkConnectionBoxInterface. An example
for the implementation of a link connection box interface is in Link connection box. To set a link
connection box interface in Java™
, call:
void setLinkConnectionBoxInterface(IlvLinkConnectionBoxInterface interface)
The link connection box interface provides
each node with a link connection box and a tangential shift offset
that defines how much the connection points are “shifted”
tangentially depending on which side the links connect.
The following figure illustrates the effects
of customizing the connection box when the connector style is
evenly spaced.
Effect of connection box interface
On the left is the result without any
connection box interface. The middle picture shows the effect if
the connection box interface returns the dashed rectangle for the
blue node but the tangential offset at all sides of the node is 0.
Notice that the outgoing links are spaced according to the dashed
rectangle, which appears too wide for the blue node in this
situation. The picture on the right shows the effect of the
connection box interface if, in addition, a positive tangential
offset was specified for the bottom side and a negative offset was
specified for the left side of the blue node.