The
GrapherPin
renderer defines the exact positions where links will be connected
to the nodes of the graph.
For example, the following code example shows a rule which declares
that a node of tag
split
has three connection points: one at the top of the node’s bounding
rectangle, one on the left, and another one on the right.
Specifying link connection points in the
style sheet
node.split {
GrapherPin[0] : "Top";
GrapherPin[1] : "Left";
GrapherPin[2] : "Right";
}
Other rules can then make use of the connection points defined to
specify where different types of links are to be connected. For
example, the following code example shows a rule that connects all
links of tag
transition
whose
condition
property is
true
from the right of the source node to the top of the destination
node.
Specifying how the ends of a transition
link are connected
link.transition[condition="true"] {
FromPin : "2"; // pin #2 = Right (see node.split rule)
ToPin : "0"; // pin #0 = Top (see node.split rule)
}
The grapher pins are taken into account during editing when you
create a new link or when you reconnect an existing link.
They are displayed as small circles during the interaction.
The
GrapherPin
renderer does not have any global properties.
The following table lists the per-object rendering properties of
the
GrapherPin
renderer.
Per-object properties of the GrapherPin
renderer
|
Property
|
Type
|
Default
|
Description
|
|---|---|---|---|
|
FromPin
|
int
|
The grapher pin to which the link will be connected on the
source node. The value of the property is the index n of the
GrapherPin[
n
]
property of the node, and the
GrapherPin[
n
]
entry specifies the connection point.
|
|
|
GrapherPin[n]
|
position, or x,y
|
The grapher pin of index n for
this node. The value of the property can be either a position
relative to the node’s bounding box (for example:
Top
,
BottomLeft
) or an x, y couple, indicating
the relative X and Y offsets of the grapher pin (0 = left or
top, 1 = bottom or right, 0.5 = center).
|
|
|
ToPin
|
int
|
The grapher pin to which the link will be connected on the
destination node. The value of the property is the index n of the
GrapherPin[
n
]
property of the node.
|
For more details, see the class IlvGrapherPinRenderer.