e6064484fa
Conflicts: chart2/source/controller/main/UndoManager.cxx chart2/source/tools/RegressionCurveHelper.cxx sc/inc/address.hxx sc/inc/attrib.hxx sc/inc/bigrange.hxx sc/inc/callform.hxx sc/inc/cell.hxx sc/inc/chartarr.hxx sc/inc/chartlis.hxx sc/inc/chgtrack.hxx sc/inc/collect.hxx sc/inc/compiler.hxx sc/inc/detdata.hxx sc/inc/document.hxx sc/inc/fillinfo.hxx sc/inc/olinetab.hxx sc/inc/prnsave.hxx sc/inc/queryparam.hxx sc/inc/sc.hrc sc/inc/scabstdlg.hxx sc/inc/table.hxx sc/inc/validat.hxx sc/inc/zforauto.hxx sc/source/core/data/documen2.cxx sc/source/core/data/document.cxx sc/source/core/data/table1.cxx sc/source/core/tool/address.cxx sc/source/core/tool/token.cxx sc/source/filter/excel/frmbase.cxx sc/source/filter/excel/impop.cxx sc/source/filter/excel/xename.cxx sc/source/filter/inc/formel.hxx sc/source/filter/inc/xename.hxx sc/source/filter/xml/xmlexprt.cxx sc/source/filter/xml/xmlnexpi.cxx sc/source/filter/xml/xmlnexpi.hxx sc/source/ui/dbgui/filtdlg.cxx sc/source/ui/inc/docfunc.hxx sc/source/ui/inc/namedlg.hxx sc/source/ui/namedlg/namedlg.cxx sc/source/ui/src/namedlg.src
307 lines
12 KiB
C++
307 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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// MARKER(update_precomp.py): autogen include statement, do not remove
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#include "precompiled_chart2.hxx"
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#include "Clipping.hxx"
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#include "CommonConverters.hxx"
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#include "BaseGFXHelper.hxx"
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#include <com/sun/star/drawing/Position3D.hpp>
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#include <com/sun/star/drawing/DoubleSequence.hpp>
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//.............................................................................
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namespace chart
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{
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//.............................................................................
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using namespace ::com::sun::star;
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using ::basegfx::B2DRectangle;
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using ::basegfx::B2DTuple;
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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namespace{
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/** @descr This is a supporting function for lcl_clip2d. It computes a new parametric
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value for an entering (dTE) or leaving (dTL) intersection point with one
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of the edges bounding the clipping area.
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For explanation of the parameters please refer to :
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Liang-Biarsky parametric line-clipping algorithm as described in:
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Computer Graphics: principles and practice, 2nd ed.,
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James D. Foley et al.,
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Section 3.12.4 on page 117.
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*/
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bool lcl_CLIPt(double fDenom,double fNum, double & fTE, double & fTL)
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{
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double fT;
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if (fDenom > 0) // Intersection enters: PE
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{
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fT = fNum / fDenom; // Parametric value at the intersection.
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if (fT > fTL) // fTE and fTL crossover
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return false; // therefore reject the line.
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else if (fT > fTE) // A new fTE has been found.
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fTE = fT;
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}
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else if (fDenom < 0) // Intersection leaves: PL
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{
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fT = fNum / fDenom; // Parametric Value at the intersection.
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if (fT < fTE) // fTE and fTL crossover
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return false; // therefore reject the line.
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else if (fT < fTL) // A new fTL has been found.
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fTL = fT;
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}
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else if (fNum > 0)
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return false; // Line lies on the outside of the edge.
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return true;
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}
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/** @descr The line given by it's two endpoints rP0 and rP1 is clipped at the rectangle
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rRectangle. If there is at least a part of it visible then sal_True is returned and
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the endpoints of that part are stored in rP0 and rP1. The points rP0 and rP1
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may have the same coordinates.
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@param rP0 Start point of the line to clip. Modified to contain a start point inside
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the clipping area if possible.
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@param rP1 End point of the line to clip. Modified to contain an end point inside
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the clipping area if possible.
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@param rRectangle Clipping area.
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@return If the line lies completely or partly inside the clipping area then TRUE
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is returned. If the line lies completely outside then sal_False is returned and rP0 and
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rP1 are left unmodified.
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*/
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bool lcl_clip2d(B2DTuple& rPoint0, B2DTuple& rPoint1, const B2DRectangle& rRectangle)
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{
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//Direction vector of the line.
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B2DTuple aDirection = rPoint1 - rPoint0;
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if( aDirection.getX()==0 && aDirection.getY()==0 && rRectangle.isInside(rPoint0) )
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{
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// Degenerate case of a zero length line.
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return true;
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}
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else
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{
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// Values of the line parameter where the line enters resp. leaves the rectangle.
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double fTE = 0,
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fTL = 1;
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// Test wether at least a part lies in the four half-planes with respect to
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// the rectangles four edges.
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if( lcl_CLIPt(aDirection.getX(), rRectangle.getMinX() - rPoint0.getX(), fTE, fTL) )
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if( lcl_CLIPt(-aDirection.getX(), rPoint0.getX() - rRectangle.getMaxX(), fTE, fTL) )
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if( lcl_CLIPt(aDirection.getY(), rRectangle.getMinY() - rPoint0.getY(), fTE, fTL) )
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if( lcl_CLIPt(-aDirection.getY(), rPoint0.getY() - rRectangle.getMaxY(), fTE, fTL) )
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{
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// At least a part is visible.
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if (fTL < 1)
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{
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// Compute the new end point.
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rPoint1.setX( rPoint0.getX() + fTL * aDirection.getX() );
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rPoint1.setY( rPoint0.getY() + fTL * aDirection.getY() );
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}
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if (fTE > 0)
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{
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// Compute the new starting point.
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rPoint0.setX( rPoint0.getX() + fTE * aDirection.getX() );
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rPoint0.setY( rPoint0.getY() + fTE * aDirection.getY() );
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}
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return true;
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}
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// Line is not visible.
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return false;
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}
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}
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bool lcl_clip2d_(drawing::Position3D& rPoint0, drawing::Position3D& rPoint1, const B2DRectangle& rRectangle)
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{
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B2DTuple aP0(rPoint0.PositionX,rPoint0.PositionY);
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B2DTuple aP1(rPoint1.PositionX,rPoint1.PositionY);
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bool bRet = lcl_clip2d( aP0, aP1, rRectangle );
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rPoint0.PositionX = aP0.getX();
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rPoint0.PositionY = aP0.getY();
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rPoint1.PositionX = aP1.getX();
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rPoint1.PositionY = aP1.getY();
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return bRet;
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}
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void lcl_addPointToPoly( drawing::PolyPolygonShape3D& rPoly
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, const drawing::Position3D& rPos
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, sal_Int32 nPolygonIndex
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, std::vector< sal_Int32 >& rResultPointCount
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, sal_Int32 nReservePointCount )
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{
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if(nPolygonIndex<0)
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{
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OSL_FAIL( "The polygon index needs to be > 0");
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nPolygonIndex=0;
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}
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//make sure that we have enough polygons
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if(nPolygonIndex >= rPoly.SequenceX.getLength() )
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{
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rPoly.SequenceX.realloc(nPolygonIndex+1);
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rPoly.SequenceY.realloc(nPolygonIndex+1);
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rPoly.SequenceZ.realloc(nPolygonIndex+1);
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rResultPointCount.resize(nPolygonIndex+1,0);
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}
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drawing::DoubleSequence* pOuterSequenceX = &rPoly.SequenceX.getArray()[nPolygonIndex];
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drawing::DoubleSequence* pOuterSequenceY = &rPoly.SequenceY.getArray()[nPolygonIndex];
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drawing::DoubleSequence* pOuterSequenceZ = &rPoly.SequenceZ.getArray()[nPolygonIndex];
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sal_Int32 nNewResultPointCount = rResultPointCount[nPolygonIndex]+1;
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sal_Int32 nSeqLength = pOuterSequenceX->getLength();
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if( nSeqLength <= nNewResultPointCount )
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{
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sal_Int32 nReallocLength = nReservePointCount;
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if( nNewResultPointCount > nReallocLength )
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{
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nReallocLength = nNewResultPointCount;
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OSL_FAIL("this should not be the case to avoid performance problems");
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}
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pOuterSequenceX->realloc(nReallocLength);
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pOuterSequenceY->realloc(nReallocLength);
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pOuterSequenceZ->realloc(nReallocLength);
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}
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double* pInnerSequenceX = pOuterSequenceX->getArray();
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double* pInnerSequenceY = pOuterSequenceY->getArray();
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double* pInnerSequenceZ = pOuterSequenceZ->getArray();
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pInnerSequenceX[nNewResultPointCount-1] = rPos.PositionX;
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pInnerSequenceY[nNewResultPointCount-1] = rPos.PositionY;
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pInnerSequenceZ[nNewResultPointCount-1] = rPos.PositionZ;
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rResultPointCount[nPolygonIndex]=nNewResultPointCount;
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}
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}//end anonymous namespace
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void Clipping::clipPolygonAtRectangle( const drawing::PolyPolygonShape3D& rPolygon
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, const B2DRectangle& rRectangle
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, drawing::PolyPolygonShape3D& aResult
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, bool bSplitPiecesToDifferentPolygons )
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{
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aResult.SequenceX.realloc(0);
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aResult.SequenceY.realloc(0);
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aResult.SequenceZ.realloc(0);
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if(!rPolygon.SequenceX.getLength())
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return;
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//need clipping?:
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{
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::basegfx::B3DRange a3DRange( BaseGFXHelper::getBoundVolume( rPolygon ) );
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::basegfx::B2DRange a2DRange( a3DRange.getMinX(), a3DRange.getMinY(), a3DRange.getMaxX(), a3DRange.getMaxY() );
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if( rRectangle.isInside( a2DRange ) )
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{
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aResult = rPolygon;
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return;
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}
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else
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{
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a2DRange.intersect( rRectangle );
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if( a2DRange.isEmpty() )
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return;
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}
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}
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//
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std::vector< sal_Int32 > aResultPointCount;//per polygon index
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//apply clipping:
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drawing::Position3D aFrom;
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drawing::Position3D aTo;
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sal_Int32 nNewPolyIndex = 0;
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sal_Int32 nOldPolyCount = rPolygon.SequenceX.getLength();
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for(sal_Int32 nOldPolyIndex=0; nOldPolyIndex<nOldPolyCount; nOldPolyIndex++, nNewPolyIndex++ )
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{
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sal_Int32 nOldPointCount = rPolygon.SequenceX[nOldPolyIndex].getLength();
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// set last point to a position outside the rectangle, such that the first
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// time lcl_clip2d returns true, the comparison to last will always yield false
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drawing::Position3D aLast(rRectangle.getMinX()-1.0,rRectangle.getMinY()-1.0, 0.0 );
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for(sal_Int32 nOldPoint=1; nOldPoint<nOldPointCount; nOldPoint++)
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{
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aFrom = getPointFromPoly(rPolygon,nOldPoint-1,nOldPolyIndex);
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aTo = getPointFromPoly(rPolygon,nOldPoint,nOldPolyIndex);
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if( lcl_clip2d_(aFrom, aTo, rRectangle) )
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{
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// compose an Polygon of as many consecutive points as possible
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if(aFrom == aLast)
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{
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if( !(aTo==aFrom) )
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{
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lcl_addPointToPoly( aResult, aTo, nNewPolyIndex, aResultPointCount, nOldPointCount );
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}
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}
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else
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{
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if( bSplitPiecesToDifferentPolygons && nOldPoint!=1 )
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{
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if( nNewPolyIndex < aResult.SequenceX.getLength()
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&& aResultPointCount[nNewPolyIndex]>0 )
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nNewPolyIndex++;
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}
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lcl_addPointToPoly( aResult, aFrom, nNewPolyIndex, aResultPointCount, nOldPointCount );
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if( !(aTo==aFrom) )
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lcl_addPointToPoly( aResult, aTo, nNewPolyIndex, aResultPointCount, nOldPointCount );
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}
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aLast = aTo;
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}
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}
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}
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//free unused space
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for( sal_Int32 nPolygonIndex = aResultPointCount.size(); nPolygonIndex--; )
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{
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drawing::DoubleSequence* pOuterSequenceX = &aResult.SequenceX.getArray()[nPolygonIndex];
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drawing::DoubleSequence* pOuterSequenceY = &aResult.SequenceY.getArray()[nPolygonIndex];
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drawing::DoubleSequence* pOuterSequenceZ = &aResult.SequenceZ.getArray()[nPolygonIndex];
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sal_Int32 nUsedPointCount = aResultPointCount[nPolygonIndex];
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pOuterSequenceX->realloc(nUsedPointCount);
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pOuterSequenceY->realloc(nUsedPointCount);
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pOuterSequenceZ->realloc(nUsedPointCount);
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}
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}
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//.............................................................................
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} //namespace chart
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//.............................................................................
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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