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Connector Algorithm

Office 2007

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The connector (conn) algorithm lays out and routes connecting lines, arrows, and shapes between layout nodes.

Parameter

Values

Description

srcNode

The name of the preceding or parent node.

Specifies the name of the layout node from which to start the connection. This value is optional.

dstNode

The name of the following or parent’s child node.

Specifies the name of the layout node from which to end the connection. This value is optional.

bgPts

A comma-delimited list that can include the following values:

  • bCtr (bottom center, default)

  • bL (bottom left)

  • bR (bottom right)

  • ctr (center)

  • midL (middle left, default)

  • midR (middle right, default)

  • tCtr (top center, default)

  • tL (top left)

  • tR (top right)

  • radial (radial)

Specifies all points on the shape at which the connector may begin. The default is bCtr, midL, midR, tCtr.

endPts

  • auto (automatic)

  • bCtr (bottom center, default)

  • bL (bottom left)

  • bR (bottom right)

  • ctr (center)

  • midL (middle left, default)

  • midR (middle right, default)

  • tCtr (top center, default)

  • tL (top left)

  • tR (top right)

  • radial (radial)

Specifies all points on the shape at which the connector may end. The default is bCtr, midL, midR, tCtr.

bendPt

  • beg (beginning)

  • def (default)

  • end (end)

Specifies the bend point.

connRout

  • straight (default)

  • bend

  • curve

Specifies whether the connector is drawn as a single straight line, orthogonal lines with a single bend, or a curve that uses the diam constraint.

begSty

  • arr (arrowhead)

  • noArr (no arrowhead, default)

Specifies whether the beginning of the connector has an arrowhead.

endSty

  • arr (arrowhead, default)

  • noArr (no arrowhead)

Specifies whether the end of the connector has an arrowhead.

dim

  • 1D

  • 2D (default)

  • custom

Indicates that the connector should use a 1-D line or a 2-D object that has width.

alignTx

  • true (default)

  • false

Specifies whether the text is aligned.

horzAlign

  • l (left)

  • ctr (center, default)

  • r (right)

Aligns all the child nodes in the space reserved for the parent node and adjusts child positions along the x-axis.

vertAlign

  • t (top)

  • mid (middle, default)

  • b (bottom)

Aligns all the child nodes in the space reserved for the parent node and adjusts child positions along the y-axis.

Constraint

Default value

Description

w

100

Specifies the width of the bounding box for a node.

h

100

Specifies the height of the bounding box for a node.

connDist

Specifies the distance between connectors. This constraint is intended for use with operator constraints, and it overrides values specified in the layout definition part.

stemThick

h * .6

Specifies the thickness of the arrow shaft.

begMarg

3.175

As a constraint, specifies the initial beginning margin value; as a rule, specifies when the algorithm decreases the padding. It also decreases the padding when the connector bends.

endMarg

3.175

As a constraint, specifies the initial ending margin value; as a rule, specifies when the algorithm decreases the padding. It also decreases the padding when the connector bends.

begPad

connDist * .22

Specifies the distance between the edge of the destination node and the connector shape.

endPad

connDist * .25

Specifies the distance between the edge of the destination node and the connector shape.

bendDist

connDist * .5

Specifies the distance from the start of the connector to a bend in the connector.

hArH

h * 1

Specifies the height of the arrowhead portion of the connector.

wArH

h * .5

Specifies the width of the arrowhead portion of the connector.

diam

connDist * 1

Specifies the curvature of a curved connector.

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