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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:FDL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Free Documentation License Usage
-** Alternatively, this file may be used under the terms of the GNU Free
-** Documentation License version 1.3 as published by the Free Software
-** Foundation and appearing in the file included in the packaging of
-** this file. Please review the following information to ensure
-** the GNU Free Documentation License version 1.3 requirements
-** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-/*!
-    \example rotations
-    \title Rotations Example
-    \ingroup qtdatavisualization_examples
-    \brief Using rotated scatter items.
-
-    This example shows how to do the following:
-
-    \list
-        \li Use item rotations
-        \li Use custom item meshes
-        \li Use range gradient to color the series
-    \endlist
-
-    For more basic example about using Qt Data Visualization graphs, see \l{Bars Example}.
-
-    \image rotations-example.png
-
-    \include examples-run.qdocinc
-
-    \section1 Using Rotations
-
-    In this example we want to orient the arrow items tangentially to the origin. This requires
-    rotating them, which can be achieved by specifying rotation quaternion to each item:
-
-    \snippet rotations/scatterdatamodifier.cpp 0
-    \snippet rotations/scatterdatamodifier.cpp 1
-    \snippet rotations/scatterdatamodifier.cpp 2
-
-    Since the items need to be rotated along two axes, we define two rotation quaternions, one
-    for Y-axis and one for Z-axis, and then multiply these together to get the total rotation,
-    which we set to the data item.
-
-    \section1 Using Custom Item Meshes
-
-    The narrow arrow mesh we use for magnetic field arrow items is not a standard mesh. Instead
-    we supply our own \c{narrowarrow.obj} file which contains the object definition for the mesh
-    in \c Wavefront obj format:
-
-    \snippet rotations/scatterdatamodifier.cpp 3
-
-    \section1 Using Range Gradient
-
-    Setting the color style to range gradient in a series means that the item is colored according
-    to its relative Y-value on the visible Y-coordinate range. We want the arrows on the bottom
-    part of the graph to be darker and gradually get lighter higher they are, so we define a
-    range gradient with black color at the position 0.0 and white color at the position 1.0:
-
-    \snippet rotations/scatterdatamodifier.cpp 4
-
-    \section1 Example Contents
-*/