Qt Quick 3D - Dynamic Model Creation Example (original) (raw)

/**************************************************************************** ** ** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** QTBEGINLICENSE:BSDQT_BEGIN_LICENSE:BSDQTB​EGINL​ICENSE:BSD ** 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 ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** QTENDLICENSEQT_END_LICENSEQTE​NDL​ICENSE ** ****************************************************************************/

import QtQuick 2.15 import QtQuick.Window 2.14 import QtQuick.Controls 2.14 import QtQuick3D 1.15

Window { id: window width: 1280 height: 720 visible: true title: "Dynamic Model Creation example"

[Button](qml-qtquick-controls2-button.html) {
    id: addButton
    anchors.left: parent.left
    anchors.top: parent.top
    anchors.margins: 20
    text: "Add Model"
    implicitWidth: 150

    background: Rectangle {
        implicitWidth: 150
        implicitHeight: 40
        opacity: enabled ? 1 : 0.3
        color: parent.down ? "#6b7080" : "#848895"
        border.color: "#222840"
        border.width: 1
        radius: 5
    }

    onClicked: {
        if (shapeSpawner.instances.length < shapeSpawner.maxInstances)
            shapeSpawner.addOrRemove(true);
    }
}

[Label](qml-qtquick-controls2-label.html) {
    id: countLabel
    anchors.top: parent.top
    anchors.horizontalCenter: parent.horizontalCenter
    anchors.margins: 20
    font.pointSize: 20
    font.bold: true
    color: "#848895"
}

[Button](qml-qtquick-controls2-button.html) {
    id: removeButton
    anchors.right: parent.right
    anchors.top: parent.top
    anchors.margins: 20
    text: "Remove Model"
    implicitWidth: 150

    background: Rectangle {
        implicitWidth: 150
        implicitHeight: 40
        opacity: enabled ? 1 : 0.3
        color: parent.down ? "#6b7080" : "#848895"
        border.color: "#222840"
        border.width: 1
        radius: 5
    }

    onClicked: {
        if (shapeSpawner.instances.length > 0)
            shapeSpawner.addOrRemove(false);
    }
}

[View3D](qml-qtquick3d-view3d.html) {
    anchors.fill: parent
    camera: camera
    renderMode: View3D.Underlay

    environment: SceneEnvironment {
        clearColor: "black"
        backgroundMode: SceneEnvironment.Color
        antialiasingMode: SceneEnvironment.MSAA
        antialiasingQuality: SceneEnvironment.High
    }

    [PointLight](qml-qtquick3d-pointlight.html) {
        position: Qt.vector3d(0, 0, 0);
        brightness: 1500
    }

    [Node](qml-qtquick3d-node.html) {
        position: Qt.vector3d(0, 0, 0);

        [PerspectiveCamera](qml-qtquick3d-perspectivecamera.html) {
            position: Qt.vector3d(0, 0, 600)
        }

        eulerRotation.y: -90

        SequentialAnimation on eulerRotation.y {
            loops: Animation.Infinite
            [PropertyAnimation](qml-qtquick-propertyanimation.html) {
                duration: 5000
                to: 360
                from: 0
            }
        }
    }

    [Node](qml-qtquick3d-node.html) {
        id: shapeSpawner
        property [real](qml-real.html) range: 300
        property [var](qml-var.html) instances: []
        readonly property [int](qml-int.html) maxInstances: 100

        function addOrRemove(add) {
            if (add) {
                // Create a new weirdShape at random postion
                var xPos = (2 * Math.random() * range) - range;
                var yPos = (2 * Math.random() * range) - range;
                var zPos = (2 * Math.random() * range) - range;
                var weirdShapeComponent = Qt.createComponent("WeirdShape.qml");
                let instance = weirdShapeComponent.createObject(
                        shapeSpawner, { "x": xPos, "y": yPos, "z": zPos,
                            "scale": Qt.vector3d(0.25, 0.25, 0.25)});
                instances.push(instance);
                if (instances.length === maxInstances)
                    addButton.enabled = false;
                else if (instances.length > 0)
                    removeButton.enabled = true;
            } else {
                // Remove last item in instances list
                let instance = instances.pop();
                instance.destroy();
                if (instances.length === 0)
                    removeButton.enabled = false;
                else if (instances.length < maxInstances)
                    addButton.enabled = true;
            }
            countLabel.text = "Models in Scene: " + instances.length;
        }
    }

    Component.onCompleted: {
        // Create 10 instances to get started
        for (var i = 0; i < 10; ++i)
            shapeSpawner.addOrRemove(true);
    }
}

}