- Qt 5.5
- Qt3D Module
- Qt3D: Planets QML Example
- Light.qml Example File
- Qt 5.5.1 Reference Documentation

# Light.qml Example File

planets-qml/Light.qml

    /****************************************************************************
    **
    ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the Qt3D module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL3$
    ** Commercial License Usage
    ** Licensees holding valid commercial Qt licenses may use this file in
    ** accordance with the commercial license agreement provided with the
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    ** information use the contact form at http://www.qt.io/contact-us.
    **
    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 3 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.LGPLv3 included in the
    ** packaging of this file. Please review the following information to
    ** ensure the GNU Lesser General Public License version 3 requirements
    ** will be met: https://www.gnu.org/licenses/lgpl.html.
    **
    ** GNU General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU
    ** General Public License version 2.0 or later as published by the Free
    ** Software Foundation and appearing in the file LICENSE.GPL included in
    ** the packaging of this file. Please review the following information to
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    ****************************************************************************/

    import Qt3D 2.0
    import Qt3D.Renderer 2.0

    Entity {
        id: root

        property alias near: lightCamera.nearPlane
        property alias ratio: lightCamera.aspectRatio

        property vector3d lightPosition: Qt.vector3d(0.0, 0.0, 0.0)
        property vector3d lightIntensity: Qt.vector3d(1.0, 1.0, 1.0)

        readonly property Camera lightCamera: lightCamera
        readonly property matrix4x4 lightViewProjection:
            lightCamera.projectionMatrix.times(lightCamera.matrix)

        Camera {
            id: lightCamera
            objectName: "lightCameraLens"
            projectionType: CameraLens.PerspectiveProjection
            fieldOfView: 30
            nearPlane: 2500000.0
            farPlane: 10000000.0
            position: root.lightPosition
            viewCenter: Qt.vector3d(0.0, 0.0, 0.0)
            upVector: Qt.vector3d(0.0, 1.0, 0.0)
        }
    }