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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /chart2/source/view/inc/Clipping.hxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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 .
+ */
+
+#pragma once
+
+#include <basegfx/range/b2drectangle.hxx>
+
+namespace com::sun::star::drawing { struct PolyPolygonShape3D; }
+namespace com::sun::star::drawing { struct Position3D; }
+
+namespace chart
+{
+
+class Clipping
+{
+ /** This class uses the Liang-Biarsky parametric line-clipping algorithm as described in:
+ Computer Graphics: principles and practice, 2nd ed.,
+ James D. Foley et al.,
+ Section 3.12.4 on page 117.
+ */
+
+public:
+ /** @descr The intersection between an open polygon and a rectangle is
+ calculated and the resulting lines are placed into the poly-polygon aResult.
+ @param rPolygon The polygon is required to be open, ie. its start and end point
+ have different coordinates and that it is continuous, ie. has no holes.
+ @param rRectangle The clipping area.
+ @param aResult The resulting lines that are the parts of the given polygon lying inside
+ the clipping area are stored into aResult whose prior content is deleted first.
+ */
+ static void clipPolygonAtRectangle(
+ const css::drawing::PolyPolygonShape3D& rPolygon
+ , const ::basegfx::B2DRectangle& rRectangle
+ , css::drawing::PolyPolygonShape3D& aResult
+ , bool bSplitPiecesToDifferentPolygons = true );
+ static void clipPolygonAtRectangle(
+ const std::vector<std::vector<css::drawing::Position3D>>& rPolygon
+ , const ::basegfx::B2DRectangle& rRectangle
+ , std::vector<std::vector<css::drawing::Position3D>>& aResult
+ , bool bSplitPiecesToDifferentPolygons = true );
+};
+
+} //namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */