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-- File: SelectMgr_Selection.cdl
-- Created: Mon Feb 6 17:43:28 1995
-- Author: Mister rmi
-- <rmi@photon>
---Copyright: Matra Datavision 1995
class Selection from SelectMgr inherits TShared from MMgt
---Purpose: Represents the state of a given selection mode for a
-- Selectable Object. Contains all the sensitive entities available for this mode.
-- An interactive object can have an indefinite number of
-- modes of selection, each representing a
-- "decomposition" into sensitive primitives; each
-- primitive has an Owner (SelectMgr_EntityOwner)
-- which allows us to identify the exact entity which has
-- been detected. Each Selection mode is identified by
-- an index. The set of sensitive primitives which
-- correspond to a given mode is stocked in a
-- SelectMgr_Selection object. By Convention, the
-- default selection mode which allows us to grasp the
-- Interactive object in its entirety will be mode 0.
-- AIS_Trihedron : 4 selection modes
-- - mode 0 : selection of a trihedron
-- - mode 1 : selection of the origin of the trihedron
-- - mode 2 : selection of the axes
-- - mode 3 : selection of the planes XOY, YOZ, XOZ
-- when you activate one of modes 1 2 3 4 , you pick AIS objects of type:
-- - AIS_Point
-- - AIS_Axis (and information on the type of axis)
-- - AIS_Plane (and information on the type of plane).
-- AIS_PlaneTrihedron offers 3 selection modes:
-- - mode 0 : selection of the whole trihedron
-- - mode 1 : selection of the origin of the trihedron
-- - mode 2 : selection of the axes - same remarks as for the Trihedron.
-- AIS_Shape : 7 maximum selection modes, depending
-- on the complexity of the shape :
-- - mode 0 : selection of the AIS_Shape
-- - mode 1 : selection of the vertices
-- - mode 2 : selection of the edges
-- - mode 3 : selection of the wires
-- - mode 4 : selection of the faces
-- - mode 5 : selection of the shells
-- - mode 6 : selection of the constituent solids.
uses
SensitiveEntity from SelectBasics,
ListOfSensitive from SelectBasics,
ListIteratorOfListOfSensitive from SelectBasics,
TypeOfUpdate from SelectMgr
raises
NullObject
is
Create (IdMode : Integer = 0) returns mutable Selection;
--- Purpose: Constructs a selection object defined by the selection mode IdMode.
-- The default setting 0 is the selection mode for a shape in its entirety.
Add (me : mutable;
aprimitive : SensitiveEntity from SelectBasics)
---Purpose: Adds the sensitive primitive aprimitive to the list of
-- stored entities in this object.
-- Raises NullObject if the primitive is a null handle.
raises NullObject
is static;
Clear(me :mutable) is static;
---Purpose: empties the selection from all the stored entities
IsEmpty(me) returns Boolean is static;
---Purpose: returns true if no sensitive entity is stored.
Mode (me) returns Integer;
---Purpose: returns the selection mode represented by this selection
---C++: inline
---Category: get the sensitive entities inside the Selection
Init(me:mutable) is static;
---Purpose: Begins an iteration scanning for sensitive primitives.
---C++: inline
More(me) returns Boolean is static;
---Purpose: Continues the iteration scanning for sensitive
-- primitives with the mode defined in this framework.
---C++: inline
Next(me:mutable) is static;
---Purpose: Returns the next sensitive primitive found in the
-- iteration. This is a scan for entities with the mode
-- defined in this framework.
---C++: inline
Sensitive (me) returns any SensitiveEntity from SelectBasics is static;
---Purpose: Returns any sensitive primitive in this framework.
---C++: return const&
---C++: inline
---Category: Internal Methods for Management
--
-- sets and gets the update status of a selection
UpdateStatus(me) returns TypeOfUpdate from SelectMgr;
---C++: inline
---Purpose: Returns the flag UpdateFlag.
-- This flage gives the update status of this framework
-- in a ViewerSelector object:
-- - full
-- - partial, or
-- - none.
UpdateStatus(me:mutable;UpdateFlag : TypeOfUpdate from SelectMgr);
---C++: inline
fields
myentities : ListOfSensitive from SelectBasics;
myit : ListIteratorOfListOfSensitive from SelectBasics;
myMode : Integer from Standard;
myUpdateStatus : TypeOfUpdate from SelectMgr;
end Selection;
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