FeaturePartBoolean.cpp

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00001 /***************************************************************************
00002  *   Copyright (c) 2007 Werner Mayer <wmayer[at]users.sourceforge.net>     *
00003  *                                                                         *
00004  *   This file is part of the FreeCAD CAx development system.              *
00005  *                                                                         *
00006  *   This library is free software; you can redistribute it and/or         *
00007  *   modify it under the terms of the GNU Library General Public           *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2 of the License, or (at your option) any later version.      *
00010  *                                                                         *
00011  *   This library  is distributed in the hope that it will be useful,      *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00014  *   GNU Library General Public License for more details.                  *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Library General Public     *
00017  *   License along with this library; see the file COPYING.LIB. If not,    *
00018  *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
00019  *   Suite 330, Boston, MA  02111-1307, USA                                *
00020  *                                                                         *
00021  ***************************************************************************/
00022 
00023 
00024 #include "PreCompiled.h"
00025 #ifndef _PreComp_
00026 #endif
00027 
00028 #include "FeaturePartBoolean.h"
00029 
00030 
00031 using namespace Part;
00032 
00033 PROPERTY_SOURCE_ABSTRACT(Part::Boolean, Part::Feature)
00034 
00035 
00036 Boolean::Boolean(void)
00037 {
00038     ADD_PROPERTY(Base,(0));
00039     ADD_PROPERTY(Tool,(0));
00040 }
00041 
00042 short Boolean::mustExecute() const
00043 {
00044     if (Base.getValue() && Tool.getValue()) {
00045         if (Base.isTouched())
00046             return 1;
00047         if (Tool.isTouched())
00048             return 1;
00049     }
00050     return 0;
00051 }
00052 
00053 App::DocumentObjectExecReturn *Boolean::execute(void)
00054 {
00055     try {
00056 #if defined(__GNUC__) && defined (FC_OS_LINUX)
00057         Base::SignalException se;
00058 #endif
00059         Part::Feature *base = dynamic_cast<Part::Feature*>(Base.getValue());
00060         Part::Feature *tool = dynamic_cast<Part::Feature*>(Tool.getValue());
00061 
00062         if (!base || !tool)
00063             return new App::DocumentObjectExecReturn("Linked object is not a Part object");
00064 
00065         // Now, let's get the TopoDS_Shape
00066         TopoDS_Shape BaseShape = base->Shape.getValue();
00067         TopoDS_Shape ToolShape = tool->Shape.getValue();
00068 
00069         TopoDS_Shape resShape = runOperation(BaseShape, ToolShape);
00070         if (resShape.IsNull())
00071             return new App::DocumentObjectExecReturn("Resulting shape is invalid");
00072         this->Shape.setValue(resShape);
00073         return App::DocumentObject::StdReturn;
00074     }
00075     catch (...) {
00076         return new App::DocumentObjectExecReturn("A fatal error occurred when running boolean operation");
00077     }
00078 }