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/*************************************************************************
 *
 *  $RCSfile: b2dpolypolygontools.cxx,v $
 *
 *  $Revision: 1.5 $
 *
 *  last change: $Author: aw $ $Date: 2003-11-28 11:18:06 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  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.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (the "License"); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://www.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#ifndef _BGFX_POLYPOLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#endif

#ifndef _BGFX_POLYGON_B2DPOLYPOLYGON_HXX
#include <basegfx/polygon/b2dpolypolygon.hxx>
#endif

#ifndef _BGFX_POLYGON_B2DPOLYGON_HXX
#include <basegfx/polygon/b2dpolygon.hxx>
#endif

#ifndef _BGFX_POLYGON_B2DPOLYGONTOOLS_HXX
#include <basegfx/polygon/b2dpolygontools.hxx>
#endif

#ifndef _BGFX_NUMERIC_FTOOLS_HXX
#include <basegfx/numeric/ftools.hxx>
#endif

#ifndef _BGFX_POLYGON_B2DPOLYPOLYGONCUTTER_HXX
#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
#endif

//////////////////////////////////////////////////////////////////////////////

namespace basegfx
{
    namespace tools
    {
        // B2DPolyPolygon tools

        void correctOrientations(::basegfx::B2DPolyPolygon& rCandidate)
        {
            const sal_uInt32 nPolygonCount(rCandidate.count());
            sal_uInt32 nIndexOfOutmostPolygon(0L);
            sal_Bool bIndexOfOutmostPolygonSet(sal_False);

            for(sal_uInt32 a(0L); a < nPolygonCount; a++)
            {
                ::basegfx::B2DPolygon aCandidate = rCandidate.getB2DPolygon(a);

                if(aCandidate.count() > 2L)
                {
                    ::basegfx::B2DVectorOrientation aOrientation =
                        ::basegfx::tools::getOrientation(aCandidate);
                    sal_Bool bDoFlip(::basegfx::ORIENTATION_POSITIVE != aOrientation);

                    // init values for depth and compare point for
                    // inside test. Since the ordering makes only sense when assuming
                    // that there are no intersections, the inside test is done with
                    // any point of the candidate, so teke the first one.
                    sal_uInt32 nDepth(0L);
                    const ::basegfx::B2DPoint aTestPoint(aCandidate.getB2DPoint(0L));

                    // loop over other polygons and calculate depth
                    for(sal_uInt32 b(0L); b < nPolygonCount; b++)
                    {
                        if(b != a)
                        {
                            ::basegfx::B2DPolygon aComparePolygon = rCandidate.getB2DPolygon(b);

                            if(::basegfx::tools::isInside(aComparePolygon, aTestPoint))
                            {
                                nDepth++;
                            }
                        }
                    }

                    // if nDepth is odd it is a hole
                    sal_Bool bIsHole(1L == (nDepth & 0x00000001));

                    // does polygon need to be flipped?
                    if((bDoFlip && !bIsHole) || (!bDoFlip && bIsHole))
                    {
                        aCandidate.flip();

                        // write back changed polygon
                        rCandidate.setB2DPolygon(a, aCandidate);
                    }

                    // remember the index if it's the outmost polygon
                    if(!bIndexOfOutmostPolygonSet && 0L == nDepth)
                    {
                        bIndexOfOutmostPolygonSet = sal_True;
                        nIndexOfOutmostPolygon = a;
                    }
                }
            }

            // if the outmost polygon is not the first, move it in front
            if(bIndexOfOutmostPolygonSet && nIndexOfOutmostPolygon > 0L)
            {
                ::basegfx::B2DPolygon aOutmostPolygon = rCandidate.getB2DPolygon(nIndexOfOutmostPolygon);
                rCandidate.remove(nIndexOfOutmostPolygon);
                rCandidate.insert(0L, aOutmostPolygon);
            }
        }

        void removeIntersections(::basegfx::B2DPolyPolygon& rCandidate,
            sal_Bool bForceOrientation, sal_Bool bInvertRemove)
        {
            ::basegfx::B2DPolyPolygonCutter aCutter;

            aCutter.addPolyPolygon(rCandidate, bForceOrientation);
            aCutter.removeSelfIntersections();
            aCutter.removeDoubleIntersections();
            aCutter.removeIncludedPolygons(!bInvertRemove);
            rCandidate.clear();
            aCutter.getPolyPolygon(rCandidate);
        }

        ::basegfx::B2DPolyPolygon adaptiveSubdivideByDistance(const ::basegfx::B2DPolyPolygon& rCandidate, double fDistanceBound)
        {
            ::basegfx::B2DPolyPolygon aRetval(rCandidate);

            if(aRetval.areControlPointsUsed())
            {
                const sal_uInt32 nPolygonCount(aRetval.count());

                for(sal_uInt32 a(0L); aRetval.areControlPointsUsed() && a < nPolygonCount; a++)
                {
                    ::basegfx::B2DPolygon aCandidate = aRetval.getB2DPolygon(a);

                    if(aCandidate.areControlPointsUsed())
                    {
                        aCandidate = ::basegfx::tools::adaptiveSubdivideByDistance(aCandidate, fDistanceBound);
                        aRetval.setB2DPolygon(a, aCandidate);
                    }
                }
            }

            return aRetval;
        }

        ::basegfx::B2DPolyPolygon adaptiveSubdivideByAngle(const ::basegfx::B2DPolyPolygon& rCandidate, double fAngleBound)
        {
            ::basegfx::B2DPolyPolygon aRetval(rCandidate);

            if(aRetval.areControlPointsUsed())
            {
                const sal_uInt32 nPolygonCount(aRetval.count());

                for(sal_uInt32 a(0L); aRetval.areControlPointsUsed() && a < nPolygonCount; a++)
                {
                    ::basegfx::B2DPolygon aCandidate = aRetval.getB2DPolygon(a);

                    if(aCandidate.areControlPointsUsed())
                    {
                        aCandidate = ::basegfx::tools::adaptiveSubdivideByAngle(aCandidate, fAngleBound);
                        aRetval.setB2DPolygon(a, aCandidate);
                    }
                }
            }

            return aRetval;
        }

        ::basegfx::B2DRange getRange(const ::basegfx::B2DPolyPolygon& rCandidate)
        {
            ::basegfx::B2DRange aRetval;
            const sal_uInt32 nPolygonCount(rCandidate.count());

            for(sal_uInt32 a(0L); a < nPolygonCount; a++)
            {
                ::basegfx::B2DPolygon aCandidate = rCandidate.getB2DPolygon(a);
                aRetval.expand(::basegfx::tools::getRange(aCandidate));
            }

            return aRetval;
        }

        ::basegfx::B2DPolyPolygon applyLineDashing(const ::basegfx::B2DPolyPolygon& rCandidate, const ::std::vector<double>& raDashDotArray, double fFullDashDotLen)
        {
            ::basegfx::B2DPolyPolygon aRetval;
            const sal_uInt32 nPolygonCount(rCandidate.count());

            for(sal_uInt32 a(0L); a < nPolygonCount; a++)
            {
                ::basegfx::B2DPolygon aCandidate = rCandidate.getB2DPolygon(a);
                aRetval.append(applyLineDashing(aCandidate, raDashDotArray, fFullDashDotLen));
            }

            return aRetval;
        }
    } // end of namespace tools
} // end of namespace basegfx

//////////////////////////////////////////////////////////////////////////////

// eof