程序運行截圖如下：

還是動的。

官方出這篇博文的目的是如何教我們使用Qt Quick 3D去渲染簡單的場景。

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首先是設置其場景。

在main.qml文件中設置整個場景，導入QtQuick3D組建，用于使用各種3D數據類型：

import QtQuick3D 1.14Window {id: windowwidth: 1280height: 720visible: trueView3D {id: viewanchors.fill: parent//! [environment]environment: SceneEnvironment {clearColor: "skyblue"backgroundMode: SceneEnvironment.Color}//! [environment]//! [camera]PerspectiveCamera {position: Qt.vector3d(0, 200, -300)rotation: Qt.vector3d(30, 0, 0)}//! [camera]//! [light]DirectionalLight {rotation: Qt.vector3d(30, 70, 0)}//! [light]//! [objects]Model {position: Qt.vector3d(0, -200, 0)source: "#Cylinder"scale: Qt.vector3d(2, 0.2, 1)materials: [ DefaultMaterial {diffuseColor: "red"}]}Model {position: Qt.vector3d(0, 150, 0)source: "#Sphere"materials: [ DefaultMaterial {diffuseColor: "blue"}]SequentialAnimation on y {loops: Animation.InfiniteNumberAnimation {duration: 3000to: -150from: 150easing.type:Easing.InQuad}NumberAnimation {duration: 3000to: 150from: -150easing.type:Easing.OutQuad}}}//! [objects]}}

定義了場景所處的環境。在這個例子中將background的顏色改成了‘skyblue’。

environment: SceneEnvironment {clearColor: "skyblue"backgroundMode: SceneEnvironment.Color}

隨后定義了場景中的相機。在此官方實例中使用了PerspectiveCamera充當相機，將相機向后移，這個后是指人倒退向后這個，并且給一個看的角度

PerspectiveCamera {position: Qt.vector3d(0, 200, -300)rotation: Qt.vector3d(30, 0, 0)}

在畫物體前，還需要一個光源去照，在物理里面，只有光照到物體上，反射的光進入眼睛才會有顏色，沒有光就是一坨黑。

DirectionalLight {rotation: Qt.vector3d(30, 70, 0)}

其次是畫簡單的物體。

畫一個用紅色圓柱弄的圓盤，并且畫一個球，這個球有一些動態效果

Model {position: Qt.vector3d(0, -200, 0)source: "#Cylinder"scale: Qt.vector3d(2, 0.2, 1)materials: [ DefaultMaterial {diffuseColor: "red"}]}Model {position: Qt.vector3d(0, 150, 0)source: "#Sphere"materials: [ DefaultMaterial {diffuseColor: "blue"}]SequentialAnimation on y {loops: Animation.InfiniteNumberAnimation {duration: 3000to: -150from: 150easing.type:Easing.InQuad}NumberAnimation {duration: 3000to: 150from: -150easing.type:Easing.OutQuad}}}

源碼如下：

simple.pro

QT += quick quick3d-privatetarget.path = $$[QT_INSTALL_EXAMPLES]/quick3d/simple INSTALLS += targetSOURCES += \main.cppRESOURCES += \qml.qrcOTHER_FILES += \doc/src/*.*

main.cpp

#include <QGuiApplication> #include <QQmlApplicationEngine>#include <QtGui> #include <QtQuick3D/private/qquick3dviewport_p.h>int main(int argc, char *argv[]) {QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);QGuiApplication app(argc, argv);QSurfaceFormat::setDefaultFormat(QQuick3DViewport::idealSurfaceFormat(4));QQmlApplicationEngine engine;engine.load(QUrl(QStringLiteral("qrc:/main.qml")));if (engine.rootObjects().isEmpty())return -1;return app.exec(); }

main.qml

import QtQuick 2.14 import QtQuick.Window 2.14 import QtQuick3D 1.14Window {id: windowwidth: 1280height: 720visible: trueView3D {id: viewanchors.fill: parent//! [environment]environment: SceneEnvironment {clearColor: "skyblue"backgroundMode: SceneEnvironment.Color}//! [environment]//! [camera]PerspectiveCamera {position: Qt.vector3d(0, 200, -300)rotation: Qt.vector3d(30, 0, 0)}//! [camera]//! [light]DirectionalLight {rotation: Qt.vector3d(30, 70, 0)}//! [light]//! [objects]Model {position: Qt.vector3d(0, -200, 0)source: "#Cylinder"scale: Qt.vector3d(2, 0.2, 1)materials: [ DefaultMaterial {diffuseColor: "red"}]}Model {position: Qt.vector3d(0, 150, 0)source: "#Sphere"materials: [ DefaultMaterial {diffuseColor: "blue"}]SequentialAnimation on y {loops: Animation.InfiniteNumberAnimation {duration: 3000to: -150from: 150easing.type:Easing.InQuad}NumberAnimation {duration: 3000to: 150from: -150easing.type:Easing.OutQuad}}}//! [objects]} }

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