-- Created on: 1992-11-17 -- Created by: Remi LEQUETTE -- Copyright (c) 1992-1999 Matra Datavision -- Copyright (c) 1999-2012 OPEN CASCADE SAS -- -- The content of this file is subject to the Open CASCADE Technology Public -- License Version 6.5 (the "License"). You may not use the content of this file -- except in compliance with the License. Please obtain a copy of the License -- at http://www.opencascade.org and read it completely before using this file. -- -- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its -- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France. -- -- The Original Code and all software distributed under the License is -- distributed on an "AS IS" basis, without warranty of any kind, and the -- Initial Developer hereby disclaims all such warranties, including without -- limitation, any warranties of merchantability, fitness for a particular -- purpose or non-infringement. Please see the License for the specific terms -- and conditions governing the rights and limitations under the License. deferred generic class FaceExplorer from TopClass (TheEdge as any) ---Purpose: Describe an exploration of a 2D face suitable for -- classification. uses Orientation from TopAbs, Pnt2d from gp, Lin2d from gp is Reject(me; P : Pnt2d from gp) returns Boolean ---Purpose: Should return True if the point is outside a -- bounding volume of the face. is deferred; Segment(me; P : Pnt2d from gp; L : out Lin2d from gp; Par : out Real) ---Purpose: Returns in , a segment having at least -- one intersection with the face boundary to -- compute intersections. is deferred; InitWires(me : in out) ---Purpose: Starts an exploration of the wires. is deferred; MoreWires(me) returns Boolean ---Purpose: Returns True if there is a current wire. ---C++: inline is deferred; NextWire(me : in out) ---Purpose: Sets the explorer to the next wire and returns -- False if there are no more wires. is deferred; RejectWire(me; L : Lin2d from gp; Par : Real) returns Boolean ---Purpose: Returns True if the wire bounding volume does not -- intersect the segment. is deferred; InitEdges(me : in out) ---Purpose: Starts an exploration of the edges of the current -- wire. is deferred; MoreEdges(me) returns Boolean ---Purpose: Returns True if there is a current edge. ---C++: inline is deferred; NextEdge(me : in out) ---Purpose: Sets the explorer to the next wire and returns -- False if there are no more wires. is deferred; RejectEdge(me; L : Lin2d from gp; Par : Real) returns Boolean ---Purpose: Returns True if the edge bounding volume does not -- intersect the segment. is deferred; CurrentEdge(me; E : out TheEdge; Or : out Orientation from TopAbs) ---Purpose: Curent edge in current wire and its orientation is deferred; end FaceExplorer;