Qt Quick 3D - Dynamic Model Creation Example
// Copyright (C) 2019 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause import QtQuick import QtQuick.Controls import QtQuick3D Window { id: window width: 1280 height: 720 visible: true color: "black" title: "Dynamic Model Creation example" Button { 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: shapeSpawner.addShape() } Label { id: countLabel anchors.top: parent.top anchors.horizontalCenter: parent.horizontalCenter anchors.margins: 20 font.pointSize: 20 font.bold: true color: "#848895" text: "Models in Scene: " + shapeSpawner.count } Button { id: removeButton anchors.right: parent.right anchors.top: parent.top anchors.margins: 20 text: "Remove Model" implicitWidth: 150 enabled: shapeSpawner.count > 0 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: shapeSpawner.removeShape() } View3D { anchors.fill: parent camera: camera renderMode: View3D.Underlay environment: SceneEnvironment { clearColor: "black" backgroundMode: SceneEnvironment.Color antialiasingMode: SceneEnvironment.MSAA antialiasingQuality: SceneEnvironment.High } PointLight { position: Qt.vector3d(0, 0, 0); brightness: 2.5 } Node { position: Qt.vector3d(0, 0, 0); PerspectiveCamera { position: Qt.vector3d(0, 0, 600) } eulerRotation.y: -90 SequentialAnimation on eulerRotation.y { loops: Animation.Infinite PropertyAnimation { duration: 5000 to: 360 from: 0 } } } Node { id: shapeSpawner property real range: 300 property var instances: [] property int count function addShape() { var xPos = (2 * Math.random() * range) - range; var yPos = (2 * Math.random() * range) - range; var zPos = (2 * Math.random() * range) - range; var shapeComponent = Qt.createComponent("WeirdShape.qml"); let instance = shapeComponent.createObject(shapeSpawner, { "x": xPos, "y": yPos, "z": zPos, "scale": Qt.vector3d(0.25, 0.25, 0.25)}); instances.push(instance); count = instances.length } function removeShape() { if (instances.length > 0) { let instance = instances.pop(); instance.destroy(); count = instances.length } } } Component.onCompleted: { for (var i = 0; i < 10; ++i) shapeSpawner.addShape() } } }