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/****************************************************************************
**
** Copyright (C) 1993-2009 NVIDIA Corporation.
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:FDL$
** 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
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** 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
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****************************************************************************/
/*!
\title Tilt Shift
\page tilt-shift-effect.html
\ingroup qt3dstudio-best-practices
\section1 Using Tilt Shift
\image Effects-TiltShift.png
The \"Tilt Shift\" effect simulates depth of field in a much simpler
(and more performant) manner. Instead of blurring based on the depth
buffer, it simply blurs everything except for horizontal stripe on the
layer. The effect is controlled by the properties:
\list
\li
\c{Focus Position} - the vertical placement of the center of
effect (the 'focused region') on the screen, from top to bottom.
\li
\c{Focus Width} - the vertical size of the in-focus region.
\li
\c{Blur Amount} - how much the not-in-focus regions are blurred.
\endlist
As with the Depth of Field effect, this effect has a
\c{Debug Rendering} option that you can enable to see where the
blur will be applied to the Layer. (See above for further description.)
\image Effects-TiltShift-Debug.png
*/
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