Block

Full name Microsoft.VisualBasic.Data.visualize.Network.Layouts.Cola.Block Assembly Microsoft.VisualBasic.Data.visualize.Network.Layouts Members 11

01 Syntax

Microsoft.VisualBasic.Data.visualize.Network.Layouts.Cola.Block

02 Methods

Name	Overloads	Summary
updateWeightedPosition	1	move the block where it needs to be to minimize cost
traverse	1	traverse the active constraint tree applying visit to each active constraint
findMinLM	1	Calculate lagrangian multipliers on constraints And find the active constraint in this block with the smallest lagrangian.
isActiveDirectedPathBetween	1	Search active constraint tree from u to see if there Is a directed path to v.
split	1	split the block into two by deactivating the specified constraint
splitBetween	1	find a split point somewhere between the specified variables

03 Properties

Name	Overloads	Summary
cost	1

04 Fields

Name	Overloads	Summary
ps	1
posn	1
vars	1
blockInd	1

05 Members

method updateWeightedPosition #

updateWeightedPosition

move the block where it needs to be to minimize cost

method traverse #

traverse(Func(Of Constraint, Object), List(Of Object), Variable, Variable)

traverse the active constraint tree applying visit to each active constraint

Parameters

Name	Type	Description
`visit`	`Func(Of Constraint, Object)`	-
`acc`	`List(Of Object)`	-
`v`	`Variable`	-
`prev`	`Variable`	-

method findMinLM #

findMinLM

Calculate lagrangian multipliers on constraints And find the active constraint in this block with the smallest lagrangian. if the lagrangian Is negative, then the constraint Is a split candidate.

method isActiveDirectedPathBetween #

isActiveDirectedPathBetween(Variable, Variable)

Search active constraint tree from u to see if there Is a directed path to v. Returns true if path Is found.

Parameters

Name	Type	Description
`u`	`Variable`	-
`v`	`Variable`	-

method split #

split(Constraint)

split the block into two by deactivating the specified constraint

Parameters

Name	Type	Description
`C`	`Constraint`	-

method splitBetween #

splitBetween(Variable, Variable)

find a split point somewhere between the specified variables

Parameters

Name	Type	Description
`vl`	`Variable`	-
`vr`	`Variable`	-

field ps #

field posn #

posn

field vars #

vars

field blockInd #

blockInd

property cost #

cost