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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Design 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
** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
** $QT_END_LICENSE$
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****************************************************************************/
/*!
\page studio-3d-repeater-3d.html
\previouspage studio-3d-morph-target.html
\nextpage studio-3d-loader-3d.html
\title Repeater3D
\note The \uicontrol Repeater3D component is released as a tech preview
feature in \QDS 2.2, and its functionality will be improved in future
releases.
The \uicontrol Repeater3D component is used to create a large number of
similar items. Like other view types, \uicontrol Repeater3D needs a model
and a delegate. For each entry in the model, the delegate is instantiated in
a context seeded with data from the model.
The model can be any of the supported \l{Lists and Other Data Models}
{data models}. Additionally, like delegates for other views, a delegate for
the \uicontrol Repeater3D can access its index within the repeater, as well
as the model data relevant to the delegate.
Add a \uicontrol Repeater3D component to your scene by drag-and-dropping it
from \uicontrol Components > \uicontrol {Qt Quick 3D} >
\uicontrol {Qt Quick 3D} to \uicontrol Scene in \uicontrol Navigator.
\note \uicontrol Repeater3D owns all items it instantiates. Removing or
dynamically destroying an item created by \uicontrol Repeater3D results in
unpredictable behavior.
\note \uicontrol Repeater3D can only repeat objects derived from
\uicontrol Nodes.
For more information, see \l{https://doc.qt.io/qt/qml-qtquick3d-repeater3d.html}
{Repeater3D} in the \uicontrol {Qt Quick 3D} documentation.
\section1 Repeater3D Properties
To define a model providing data for the repeater, select it in \l Navigator,
and then in \uicontrol Properties > \uicontrol Repeater, specify the
\uicontrol Model property. Currently, you can only use the \uicontrol Model
property in the \uicontrol Properties view to set a numeric model or to bind
to QML based models. You can use the \l {Working in Edit Mode}{Edit} mode or
\l {Text Editor} to define any of the supported data models as the value of
the \uicontrol Model property:
\list
\li A number that indicates the number of delegates to be created by
the repeater.
\li A model, such as a \uicontrol ListModel component, or a
QAbstractItemModel subclass.
\li A string list.
\li An object list.
\endlist
The type of model affects the properties that are exposed to the delegate.
The \uicontrol Delegate property specifies a template defining each object
instantiated by the repeater. Currently, the \uicontrol Delegate property
needs to be defined in code using the \uicontrol Edit mode or
\uicontrol {Text Editor}. Delegates are exposed to a read-only index
property that indicates the index of the delegate within the repeater. For
more information, see \l{https://doc.qt.io/qt/qml-qtquick3d-repeater3d.html#delegate-prop}
{Delegate} in the \uicontrol {Qt Quick 3D} documentation.
If the model is a model object, such as a ListModel, the delegate can access
all model roles as named properties, in the same way that delegates do for
view classes like \uicontrol ListView.
*/
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