KDAB教程:Qt 3D入门与基础功能详解

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Qt 3D 是一款由 Qt 公司提供的强大且灵活的3D图形库,它不仅仅局限于游戏开发,而是作为一个多用途的软实时模拟引擎。这份来自 KDAB 的 50 页基础教程——《Qt 3D 基础》——是初学者进入这个领域的绝佳资源。教程内容覆盖了广泛的领域,包括: 1. **FeatureSet**:教程首先介绍了 Qt3D 的特性集合,它强调了其作为一套全面的工具,能够处理多种任务,如实体组件系统(Entity Component System, ECS)的应用,HelloDonut 示例演示了如何在 Qt3D 中实现基本功能。 2. **ECS Explained**:讲解了 Entity Component System 的概念,这是一种游戏开发中的设计模式,通过将对象拆分为独立的组件和系统,提高了代码的可维护性和复用性。 3. **Input Handling** 和 **Drawing Basics**:展示了如何处理用户输入以及基础的3D图形绘制,这对于理解和操作场景中的对象至关重要。 4. **Beyond the Tip of the Iceberg**:这部分深入探讨了 Qt3D 的潜力和应用场景,不仅限于游戏,还涵盖了人工智能、逻辑处理、音频等多个领域,以及机械系统、物理模拟等复杂系统的仿真。 5. **Scalability and Backend Architecture**:强调了 Qt3D 的可扩展性和后台架构,前端轻量级并运行在主线程上,而后台通过线程池进行高效执行,确保非阻塞通信,最大化处理能力。 6. **The Future of Qt3D**:展望了该技术的未来发展,说明 Qt3D 将继续适应新的需求和技术趋势,保持其在复杂系统模拟中的核心地位。 这份教程为读者提供了一个全面的入门指南,从基础概念到实践应用,帮助新手快速理解和掌握 Qt3D,无论你是希望构建游戏、仿真软件还是需要在项目中引入3D元素,都将从中获益匪浅。
2017-08-25 上传
This directory contains the Qt3D project for Qt5: * Qt3D QML bindings and * Qt3D C++ APIs Building Qt3D ================== Qt5 is a rapidly changing bleeding edge environment. This branch is our initial support for it and thus is also rapidly changing and bleeding edge. This branch is experimental, and unsupported. This information is provided for advanced use only. No guarantees about API stability or even if this works at all are supplied, use at your own risk. First fetch the Qt5 source tree and Qt3D master branch: cd ~/depot git clone ssh://codereview.qt-project.org:29418/qt/qt5.git cd qt5 ./init-repository --codereview-username \ --module-subset=qtbase,qtsvg,qtdeclarative,qttools,qtxmlpatterns,qtdoc,qlalr,qtrepotools,qtqa,qtlocation,qt3d git submodule foreach "git fetch gerrit && git reset --hard gerrit/master" cd qt3d scp -p -P 29418 codereview.qt-project.org:hooks/commit-msg .git/hooks/ git fetch gerrit git checkout --track -b master gerrit/master If you are reading this file then somehow you probably already got this far anyway. Now build Qt5, which will also build Qt3D as a module: cd ~/build mkdir qt5 cd qt5 ~/depot/qt5/configure -developer-build -opensource -confirm-license -no-webkit -no-phonon -nomake tests \ -nomake examples -declarative -opengl -svg && make -j 4 What's in Qt3D ================== Directory structure: src/threed/ This is the main library of the Qt3D project, containing abstractions for cross-platform GL, shaders, lighting models, and so on. src/plugins/ Scene format loading plugins. src/imports/ QML import plugins. util/ Various utilities that are useful when working with Qt3D. examples/ Some examples of using Qt3D QML bindings and Qt3D C++ API. demos/ Some more complex demos of using Qt3D QML bindings and Qt3D C++ API. tests/auto/qml3d/ Unit tests for the QML bindings. tests/auto/threed/ Unit tests for the C++ API doc/ Documentation. devices/symbian/ Symbian deployment file Documentation ============= The documentation can be generated with "make docs". It will be placed into "doc/html" in the build directory. Packages ======== This section is only for those developing Qt3D. Read on to discover how the building of packages works. This section is also important if you want to change how the structure of the Qt3D pro files work. To build Qt3D, run: qmake && make The .pro files will cause the toolchain to place the libraries, QML files and meshes of Qt3D directly into place, as part of the compile process. The files go into the bin/ directory, and the executables can be run directly from there. If you are doing a developer build, plugins will be installed in such a way that Qt will find them. After building the tree the install step is invoked using the INSTALL_ROOT environment export to cause the installation rules to place all the files into a sandboxed install tree, ready for packaging: INSTALL_ROOT=tmp make install Examples ======== Some examples require assimp library to parse the content. Go to http://assimp.sourceforge.net/ and build and install the assimp library. Then configure Qt3D to include assimp and run qmake && make.