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diff --git a/chart2/source/view/axes/VPolarGrid.hxx b/chart2/source/view/axes/VPolarGrid.hxx
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+++ b/chart2/source/view/axes/VPolarGrid.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_CHART2_SOURCE_VIEW_AXES_VPOLARGRID_HXX
+#define INCLUDED_CHART2_SOURCE_VIEW_AXES_VPOLARGRID_HXX
+
+#include "VAxisOrGridBase.hxx"
+#include "Tickmarks.hxx"
+#include <com/sun/star/drawing/PointSequenceSequence.hpp>
+#include <memory>
+
+namespace chart { struct VLineProperties; }
+
+namespace chart
+{
+
+class PolarPlottingPositionHelper;
+
+class VPolarGrid : public VAxisOrGridBase
+{
+// public methods
+public:
+    VPolarGrid( sal_Int32 nDimensionIndex, sal_Int32 nDimensionCount
+        , const css::uno::Sequence<
+            css::uno::Reference< css::beans::XPropertySet > > & rGridPropertiesList //main grid, subgrid, subsubgrid etc
+        );
+    virtual ~VPolarGrid() override;
+
+    virtual void createShapes() override;
+
+    void setIncrements( const std::vector< ExplicitIncrementData >& rIncrements );
+
+    static void createLinePointSequence_ForAngleAxis(
+                    css::drawing::PointSequenceSequence& rPoints
+                    , TickInfoArraysType& rAllTickInfos
+                    , const ExplicitIncrementData& rIncrement
+                    , const ExplicitScaleData& rScale
+                    , PolarPlottingPositionHelper const * pPosHelper
+                    , double fLogicRadius, double fLogicZ );
+
+private: //member
+    css::uno::Sequence<
+        css::uno::Reference< css::beans::XPropertySet > > m_aGridPropertiesList;//main grid, subgrid, subsubgrid etc
+    std::unique_ptr<PolarPlottingPositionHelper> m_pPosHelper;
+    std::vector< ExplicitIncrementData >   m_aIncrements;
+
+    void getAllTickInfos( sal_Int32 nDimensionIndex, TickInfoArraysType& rAllTickInfos ) const;
+
+    void create2DRadiusGrid( const css::uno::Reference<css::drawing::XShapes>& xLogicTarget
+                    , TickInfoArraysType& rRadiusTickInfos
+                    , TickInfoArraysType& rAngleTickInfos
+                    , const std::vector<VLineProperties>& rLinePropertiesList );
+};
+
+} //namespace chart
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */