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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0 WITH Qt-GPL-exception-1.0
import QtQuick 2.0
import QtQuick3D 1.15
Item {
id: root
property Node targetNode
property View3D targetView
property vector3d offset: Qt.vector3d(0, 0, 0)
property bool isBehindCamera
onTargetNodeChanged: updateOverlay()
Connections {
target: targetNode
function onSceneTransformChanged() { updateOverlay() }
}
Connections {
target: targetView.camera
function onSceneTransformChanged() { updateOverlay() }
}
Connections {
target: _generalHelper
function onOverlayUpdateNeeded() { updateOverlay() }
}
function updateOverlay()
{
var scenePos = targetNode ? targetNode.scenePosition : Qt.vector3d(0, 0, 0);
// Need separate variable as scenePos is reference to read-only property
var scenePosWithOffset = Qt.vector3d(scenePos.x + offset.x,
scenePos.y + offset.y,
scenePos.z + offset.z);
var viewPos = targetView ? targetView.mapFrom3DScene(scenePosWithOffset)
: Qt.vector3d(0, 0, 0);
root.x = viewPos.x;
root.y = viewPos.y;
isBehindCamera = viewPos.z <= 0;
}
}
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