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Modifications: 1. To provide the checking tool for single or couple of shapes in the context of issue "0021762:Integration of new Boolean Operation Algorithm into OCCT" has been implemented new class BRepAlgoAPI_Check. This class provides possibility to check single shape or couple of shapes on topological validity, small edges and self-interference. Also, the couple of shapes can be checked on validity for boolean operation of given type. 2. According to the issue "0023613:Add diagnostic tool for BOP" by GKA has been implemented new static public function BRepAlgoAPI::BoolDump(). This function is used for saving the initial shapes and the result shape of boolean operation in case if the arguments or the result are not valid shapes in terms of BRepAlgoAPI_Check.
134 lines
6.3 KiB
Plaintext
Executable File
134 lines
6.3 KiB
Plaintext
Executable File
-- Created on: 1993-07-06
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-- Created by: Remi LEQUETTE
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-- Copyright (c) 1993-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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-- modified by Peter KURNEV Tue Mar 5 14:01:51 2002
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package BRepAlgoAPI
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---Purpose: The BRepAlgoAPI package provides a full range of
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-- services to perform Boolean Operations on arguments (shapes
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-- that are defined in the BRep data structures). The
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-- implemented new algorithm is intended to replace the Old
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-- Boolean Operations algorithm in the BRepAlgoAPI package.
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-- The New algorithm is free of a large number of weak spots
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-- and limitations characteristics of the Old algorithm.
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-- It is more powerful and flexible.
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-- It can process arguments the Old algorithm was not adapted for.
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-- The new algorithm is based on a new approach to operations
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-- with interfered shapes. The advantages of the new algorithm
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-- include an ability to treat arguments that have shared
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-- entities. It can properly process two solids with shared
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-- faces (in terms of TopoDS_Shape::IsSame()), two
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-- faces that have shared edges and so on. Now the New Boolean
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-- Operation algorithm can treat a wide range of shapes while the
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-- Old one fails on them.
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-- A generalization of treatment of same-domain faces
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-- was included into the New algorithm. Two faces that share
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-- the same domain are processed according to the common rule
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-- even if the underlying surfaces are of different types. This
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-- allows to execute Boolean Operations properly for the same
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-- domain faces. It also concerns solids and shells that have the
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-- same domain faces. It is quite frequent when two faces share
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-- the same domain. And the New algorithm successfully copes
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-- with it in contrast to the Old one.
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-- Generalization oftreatment of degenerated edges
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-- gives a possibility to process them properly. Although there
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-- are still some difficulties with processing faces in areas close
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-- to degenerated edges.
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-- Now the processing of arguments having internal sub-shapes gives
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-- a correct result. Internal sub-shape means a sub-shape of a
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-- shape with the orientation TopAbs_INTERNAL and is located
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-- inside the shape boundaries. The New algorithm processes faces
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-- with internal edges properly. The new API of the Boolean
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-- Operations (in addition to the old API) allows to reuse the
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-- already computed interference between arguments in different
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-- types of Boolean Operations. It is possible to use once computed
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-- interference in FUSE, CUT and COMMON operations on given
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-- arguments. So there is no need to re-compute the interference
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-- between the arguments. It allows to reduce time for more than one
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-- operation on given arguments.
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-- The shape type of a Boolean Operation result and types of the arguments:
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-- - For arguments with the same shape type (e.g. SOLID /
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-- SOLID) the type of the resulting shape will be a
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-- COMPOUND, containing shapes of this type;
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-- - For arguments with different shape types (e.g.
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-- SHELL / SOLID) the type of the resulting shape will be a
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-- COMPOUND, containing shapes of the type that is the same as
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-- that of the low type of the argument. Example: For
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-- SHELL/SOLID the result is a COMPOUND of SHELLs.
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-- - For arguments with different shape types some of
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-- Boolean Operations can not be done using the default
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-- implementation, because of a non-manifold type of the
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-- result. Example: the FUSE operation for SHELL and SOLID
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-- can not be done, but the CUT operation can be done, where
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-- SHELL is the object and SOLID is the tool.
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-- It is possible to perform Boolean Operations on arguments
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-- of the COMPOUND shape type. In this case each compound must not
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-- be heterogeneous, i.e. it must contain equidimensional shapes
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-- (EDGEs or/and WIREs, FACEs or/and SHELLs, SOLIDs). SOLIDs
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-- inside the COMPOUND must not contact (intersect or touch)
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-- each other. The same condition is true for SHELLs or FACEs,
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-- WIREs or EDGEs.
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-- It does not support Boolean Operations for COMPSOLID type of shape.
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uses
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TopTools,
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TopoDS,
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gp,
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Geom,
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Geom2d,
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BOPAlgo,
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BOPDS,
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BRepBuilderAPI
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is
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deferred class BooleanOperation;
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---Purpose: Root class for boolean operations.
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class Fuse;
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---Purpose: Perform the boolean operation FUSE.
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---
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class Common;
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---Purpose: Perform the boolean operation COMMON.
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---
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class Cut;
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---Purpose: Perform the boolean operation CUT.
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---
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class Section;
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---Purpose: Perform the operation SECTION.
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---
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class Check;
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---Purpose: Check shapes on validity for boolean
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--- operation.
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DumpOper( theFilePath : CString from Standard;
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theShape1 : Shape from TopoDS;
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theShape2 : Shape from TopoDS;
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theResult : Shape from TopoDS;
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theOperation : Operation from BOPAlgo;
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isNonValidArgs : Boolean from Standard );
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---Purpose: Dump arguments and result of boolean operation in the file specified by path.
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---Level: Public
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end BRepAlgoAPI;
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