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occt/src/StlAPI/StlAPI_Writer.cdl
akz b9c1e44004 0025357: STL writer does not check the given shape for existing triangulation and remeshes shape using BRepMesh in force mode.
StlTransfer.cxx, function StlTransfer::BuildIncrementalMesh(...) fills the StlMesh_Mesh. Before this fix the StlTransfer always force meshing of the passed shape.

Now meshing is completely removed from the StlTransfer. StlWriter can return error status now, for example, if a mesh of the passed shape is empty. In this case file will be not created.

Added test case bugs/xde/bug25357

Avoid the warning on gcc compiler.
Test scripts were modified according to the fix.
     1) bug23192, bug22670, bug23193: removed "isParallel" flag from the command
         arguments. Manually meshing of the shape (as far as meshing was removed
         from STL writer).
     2) bug22898: before the fix writestl always remeshes the shape with a
         deflection, related to the boundery box of the shape. For "hammer" shape
         there is a 38.9076 deflection for mesh. Differences between before writing
         and after reading are dedicated to fact that stl writes triangulation as
         an elements of the spahe (like faces, edges etc.)
2015-02-05 14:40:24 +03:00

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-- Created on: 2000-06-23
-- Created by: Sergey MOZOKHIN
-- Copyright (c) 2000-2014 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.
class Writer from StlAPI
---Purpose: This class creates and writes
-- STL files from Open CASCADE shapes. An STL file can be
-- written to an existing STL file or to a new one..
uses
Shape from TopoDS,
Mesh from StlMesh,
ErrorStatus from StlAPI
is
Create;
---Purpose: Creates a writer object with
-- default parameters: ASCIIMode.
ASCIIMode(me: in out) returns Boolean;
---C++: return &
---Purpose: Returns the address to the
-- flag defining the mode for writing the file. This address
-- may be used to either read or change the flag.
-- If the mode returns True (default value) the generated
-- file is an ASCII file. If the mode returns False, the
-- generated file is a binary file.
Write(me : in out;
aShape : Shape from TopoDS;
aFileName : CString from Standard) returns ErrorStatus from StlAPI;
---Purpose: Converts a given shape to STL format and writes it to file with a given filename.
--- \return the error state.
fields
theASCIIMode : Boolean from Standard;
theStlMesh : Mesh from StlMesh;
end Writer;