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++ // Copyright (C) 2024 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
++
++ /*!
++ \example xr_anchors
++ \ingroup quick3d-examples
++ \ingroup qt3dxr-examples
++ \title Qt Quick 3D - XR Spatial Anchors Example
++ \examplecategory {3D}
++ \brief Demonstrates how to use spatial anchors in Qt Quick 3D XR.
++ \image xranchors-example.jpg
++ {Colored boxes with label showing anchor information}
++
++ This example shows how to use XrSpatialAnchorListModel to display and interact with real
++ physical objects in the environment. It supports both passthrough mode and fully
++ immersive mode. The basic structure follows the \l{Qt Quick 3D - XR Simple Example}{xr_simple}
++ example.
++
++ The most relevant part of the example is a Repeater3D on an XrSpatialAnchorListModel.
++ For each anchor, we create a box that fills the volume of the anchor with a color. The choice
++ of color depends on the classification of the anchor. This box is invisible in passthrough mode.
++ In addition, we visualize the position and orientation of the anchor with small boxes:
++
++ \snippet xr_anchors/main.qml repeater
++
++ The box for the anchor is pickable and has a string property \c anchorInfo that contains
++ the \l {XrSpatialAnchor::classificationString}{classificationString} of the anchor. We then
++ perform picking based on the controller's position. (See the \l{Qt Quick 3D - XR Simple Input Example}
++ {xr_input example} for details.) If we hit one of the anchor boxes, we show a label with the
++ anchor information:
++
++ \snippet xr_anchors/main.qml label
++
++ */