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-- File: Cumulate.cdl
-- Created: Wed Sep 23 10:36:04 1992
-- Author: Christian CAILLET
-- <cky@phobox>
---Copyright: Matra Datavision 1992
class Cumulate from IFGraph inherits GraphContent
---Purpose : this class evaluates effect of cumulated sub-parts :
-- overlapping, forgotten entities
-- Results are kept in a Graph, several question can be set
-- Basic Iteration gives entities which are part of Cumulation
uses Transient, EntityIterator, Graph
is
Create (agraph : Graph) returns Cumulate;
---Purpose : creates empty Cumulate, ready to work
GetFromEntity (me : in out; ent : any Transient);
---Purpose : adds an entity and its shared ones to the list
GetFromIter (me : in out; iter : EntityIterator);
---Purpose : adds a list of entities (as an iterator) as such, that is,
-- without their shared entities (use AllShared to have them)
ResetData (me : in out);
---Purpose : Allows to restart on a new data set
-- -- Results -- --
-- More-Next-Value-Entity give all entities taken into the Cumulation
-- other informations are provided, as EntityIterator : hence they
-- are available for other evaluations
Evaluate (me : in out) is redefined;
---Purpose : Evaluates the result of cumulation
Overlapped (me) returns EntityIterator;
---Purpose : returns entities which are taken several times
Forgotten (me) returns EntityIterator;
---Purpose : returns entities which are not taken
PerCount (me; count : Integer = 1) returns EntityIterator;
---Purpose : Returns entities taken a given count of times
-- (0 : same as Forgotten, 1 : same as no Overlap : default)
NbTimes (me; ent : Transient) returns Integer;
---Purpose : returns number of times an Entity has been counted
-- (0 means forgotten, more than 1 means overlap, 1 is normal)
HighestNbTimes (me) returns Integer;
---Purpose : Returns the highest number of times recorded for every Entity
-- (0 means empty, 1 means no overlap)
fields
thegraph : Graph;
end Cumulate;
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