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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:FDL$
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**
** GNU Free Documentation License Usage
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** Documentation License version 1.3 as published by the Free Software
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/*!
\example layersinquick
\title Qt 3D Studio Runtime: Layers in Qt Quick Example
\ingroup qt3dstudioruntime2-examples-qml
\brief Demonstrates using the View3D element in a Qt Quick application
\image layersinquick.png
\e {This example demonstrates basic usage of the View3D element in Qt Quick applications}
\include examples-run.qdocinc
\section1 Description
This example consists of a simple C++ main() function that sets up a
QQuickView and a QML scene demonstrating the usage of the \l Studio3D and
\l View3D QML types. This combination is important because once a \l View3D
element is added to the Qt Quick scene, the behavior of \l Studio3D changes
significantly: instead of displaying the composited image of all layers
from the Qt 3D Studio presentation loaded from the \c{.uip} file(s), it
rather delegates the rendering of the individual layers to the \l View3D
items.
This offers a lightweight and efficient way to create user interfaces that
have 3D content present in a number of different areas in the window. In
contrast, the traditional approach treats the 3D view as a "box", a
rectangular area defined by the bounds of the \l Studio3D element. With \l
View3D this limitation can be lifted since each layer from the 3D scene can
be managed (positioned, transformed, blended) individually via a \l View3D
instance dedicated to that layer.
In the example the source \c{.uip} file has two layers. Both have
transparent backgrounds, one contains a single cube, while the other a
sphere and some text nodes. When it comes to the \l Studio3D item, the QML
code is no different from other examples. What makes it special is the
inclusion of two \l View3D items, each referencing a layer from the
\c{.uip} presentation by name.
*/
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