+++ /dev/null
--- Created on: 1995-01-24
--- Created by: Rob
--- Copyright (c) 1995-1999 Matra Datavision
--- Copyright (c) 1999-2014 OPEN CASCADE SAS
---
--- This file is part of Open CASCADE Technology software library.
---
--- This library is free software; you can redistribute it and/or modify it under
--- the terms of the GNU Lesser General Public License version 2.1 as published
--- by the Free Software Foundation, with special exception defined in the file
--- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
--- distribution for complete text of the license and disclaimer of any warranty.
---
--- Alternatively, this file may be used under the terms of Open CASCADE
--- commercial license or contractual agreement.
-
--- modified by rob jul/ 21/ 97 : inserting locations ...
--- modified by rob jan/ 29/ 98 : Sort by deph-> add a field to be able
--- to compute a depth
--- -> Virtual methods rather than
--- Deferred for Project
--- WARNING : Must be redefined for
--- each kind of sensitive entity
-
-
-deferred class SensitiveEntity from Select3D inherits
- SensitiveEntity from SelectBasics
-
- ---Purpose: Abstract framework to define 3D sensitive entities.
- -- As the selection process uses the principle of a
- -- projection of 3D shapes onto a 2D view where
- -- nearness to a rectangle determines whether a shape
- -- is picked or not, all 3D shapes need to be converted
- -- into 2D ones in order to be selected.
-
-
-uses
-
- Projector from Select3D,
- EntityOwner from SelectBasics,
- Location from TopLoc,
- Lin from gp,
- Box2d from Bnd,
- Array1OfPnt2d from TColgp
-
-is
-
- Initialize(OwnerId : EntityOwner from SelectBasics);
-
- NeedsConversion(me) returns Boolean is redefined static;
- ---Level: Public
- ---Purpose: Returns true if this framework needs conversion.
- ---C++: inline
-
- Is3D(me) returns Boolean from Standard is redefined static;
- ---Purpose: Returns true if this framework provides 3D information.
-
- Project (me:mutable;aProjector : Projector from Select3D) is deferred;
- ---Level: Public
- ---Purpose: In classes inheriting this framework, you must
- -- redefine this function in order to get a sensitive 2D
- -- rectangle from a 3D entity. This rectangle is the
- -- sensitive zone which makes the 3D entity selectable.
-
- MaxBoxes(me) returns Integer is redefined virtual;
- ---Level: Public
- ---Purpose: Returns the max number of sensitive areas returned
- -- by this class is 1 by default.
- -- Else on must redefine this method.
-
-
- GetConnected(me:mutable;aLocation: Location from TopLoc)
- returns SensitiveEntity from Select3D is virtual;
- ---Purpose: Originally this method intended to return sensitive
- -- entity with new location aLocation, but currently sensitive
- -- entities do not hold a location, instead HasLocation() and
- -- Location() methods call corresponding entity owner's methods.
- -- Thus all entities returned by GetConnected() share the same
- -- location propagated from corresponding selectable object.
- -- You must redefine this function for any type of
- -- sensitive entity which can accept another connected
- -- sensitive entity.//can be connected to another sensitive entity.
-
- Matches (me :mutable;
- XMin,YMin,XMax,YMax : Real from Standard;
- aTol: Real from Standard)
- returns Boolean from Standard is redefined virtual;
- ---Purpose: Matches the box defined by the coordinates Xmin,
- -- Ymin, Xmax, Ymax with the entity found at that point
- -- within the tolerance aTol.
- -- Xmin, YMin define the minimum point in the lower left
- -- hand corner of the box, and XMax, YMax define the
- -- maximum point in the upper right hand corner of the box.
- -- You must redefine this function for every inheriting entity.
- -- You will have to call this framework inside the redefined function.
-
- Matches (me :mutable;
- Polyline:Array1OfPnt2d from TColgp;
- aBox:Box2d from Bnd;
- aTol: Real from Standard)
- returns Boolean from Standard is redefined virtual;
- ---Purpose: prevents from hiding virtual methods...
-
- ---Category: Location of sensitive entities...
- -- Default implementations of HasLocation() and Location() rely on
- -- location obtained from the entity owner, to minimize memory usage.
- -- SetLocation() and ResetLocation() do nothing by default.
-
- HasLocation(me) returns Boolean from Standard is virtual;
- ---Purpose: Returns true if this framework has a location defined.
-
- Location(me) returns Location from TopLoc is virtual;
- ---C++: return const
-
- ResetLocation(me:mutable) is virtual;
- ---Purpose: sets the location to Identity
-
- SetLocation(me:mutable;aLoc :Location from TopLoc) is virtual;
-
- Dump(me; S: in out OStream;FullDump : Boolean from Standard = Standard_True) is virtual;
- ---Purpose: 2 options :
- -- <FullDump> = False -> general information
- -- <FullDump> = True -> whole informtion 3D +2d ...
-
- DumpBox(myclass; S: in out OStream;abox:Box2d from Bnd) ;
-
- UpdateLocation(me:mutable;aLoc:Location from TopLoc);
-
-end SensitiveEntity;
-
-
-
-
-
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projects / occt.git / blobdiff