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--
-- File: Aspect_Edge.cdl
-- Created: Lundi 4 Novembre 1991
-- Author: NW,JPB,CAL
--
---Copyright: MatraDatavision 1991,1992,1993
--
class Edge from Aspect
---Version:
---Purpose: This class allows the definition of an edge.
---Keywords: Edge, Visible, Invisible, Border, Line, Face
---Warning:
---References:
uses
TypeOfEdge from Aspect
raises
EdgeDefinitionError from Aspect
is
Create
returns Edge from Aspect;
---Level: Public
---Purpose: Creates an edge.
Create ( AIndex1, AIndex2 : Integer from Standard;
AType : TypeOfEdge from Aspect )
returns Edge from Aspect
---Level: Public
---Purpose: Creates an edge from an index of vertices
-- in a table of vertices.
-- <AType> indicates if this edge is seen or not.
-- Warning: Raises EdgeDefinitionError if AIndex1 == AIndex2.
raises EdgeDefinitionError from Aspect;
---------------------------------------------------
-- Category: Methods to modify the class definition
---------------------------------------------------
SetValues ( me : in out;
AIndex1, AIndex2 : Integer from Standard;
AType : TypeOfEdge from Aspect )
---Level: Public
---Purpose: Updates the values of an edge <me>.
-- Warning: Raises EdgeDefinitionError if AIndex1 == AIndex2.
raises EdgeDefinitionError from Aspect;
----------------------------
-- Category: Inquire methods
----------------------------
Values ( me;
AIndex1, AIndex2 : out Integer from Standard;
AType : out TypeOfEdge from Aspect );
---Level: Public
---Purpose: Returns the index of the vertices and the
-- type of edge <me>.
---Category: Inquire methods
FirstIndex ( me )
returns Integer from Standard;
---Level: Public
---Purpose: Returns the index of the begin of the edge <me>.
---Category: Inquire methods
LastIndex ( me )
returns Integer from Standard;
---Level: Public
---Purpose: Returns the index of the end of the edge <me>.
---Category: Inquire methods
Type ( me)
returns TypeOfEdge from Aspect;
---Level: Public
---Purpose: Returns the type of the edge <me>.
---Category: Inquire methods
--
fields
--
-- Class : Aspect_Edge
--
-- Purpose : Declaration of variables specific to edges
--
-- Reminder : An edge is defined by :
-- - two vertices referenced by indices
-- - its visibility
--
-- indices of the vertices
MyBegin : Integer from Standard;
MyEnd : Integer from Standard;
-- the visibility
MyVisibility : TypeOfEdge from Aspect;
end Edge;
|
