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上传时间: 2012-04-24
详细说明： As a testament to the success of Flash-based 3D, Adobe enhanced the 3D potential of Flash in their 2008 release of Flash Player 10 by including some 3D-specific features, with many of these intended for use by 3D engines. This move retained the accessible nature of 3D in Flash for web professionals, while moving Flash in a direction more suited to 3D production and more familiar to traditional 3D designers and developers. The approach Away3D offers to the creation of web content should be fami liar to anyone working from within the Flash realm. The entire library is constructed using the object-oriented approach enabled by ActionScript 3.0, with the arrangement of 3D objects, containers, and scenes matching the arrangement of Flash’s native 2D objects in the display list. Classes are defined as sections of code with specific form and function, and these, in turn, are grouped into packages that hold different varieties of class type. As an example, the code used to construct a 3D cube is held within its own Cube class, and this is stored with other geometric shape definitions inside a package called primitives. The same is true for classes that define different types of camera, material, importer, animation, and so on. This organization helps simplify the learning process for anyone new to the engine, and it offers flexibility when extending the engine’s capabilities by clarifying the points at which additions can be made. Extensibility is an extremely useful asset to any open source project, helping to drive contributions and ultimately accelerating the development of new features. These days, a basic approach to 3D using perspective-projected display objects (which are known as 2.5D objects) is offered with the standard tools available in Flash Professional. This technique is great for creating simple “postcards in space” interfaces, but it has limited potential for any other type of 3D content. A 3D engine provides the necessary tools and interfaces to create a truly 3D experience, and Away3D offers one of the most powerful and easy-to-use frameworks around. As well as being free, open source software, Away3D has an active community providing free technical help to individuals via the official website, www.away3d.com, where you will also find regularly published tutorials, demos and showcases. This book has been created as an Away3D primer for everyone wishing to expand their Flash knowledge into the third dimension, or for that matter, everyone wishing to expand their 3D knowledge into the Flash dimension. We hope you enjoy the ride! ...展开收缩
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