Maya肌肉骨骼模拟插件教程 - Ziva Dynamics – Intro to Ziva VFX

Maya肌肉骨骼模拟插件教程（英文字幕） - Ziva Dynamics – Intro to Ziva VFX

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Maya肌肉骨骼模拟插件教程 - Ziva Dynamics – Intro to Ziva VFX
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Ziva VFX允许用户快速模拟软组织材料，并将真实世界的物理嵌入到每一个创作中。通过反映自然的基本财产，用户可以实现CG角色，这些角色可以按照观众的期望进行移动、调整和抖动。这种方法大大减少了对手工拍摄雕刻或纠正形状的任何需求，相反，它利用了工程和科学领域的主流模拟方法，即有限元方法，实现了开箱即用的高性能动力学。
Ziva VFX lets users rapidly simulate soft-tissue materials and embed real-world physics into every creation. By mirroring the fundamental properties of nature, users achieve CG characters that move, flex, and jiggle the way audiences expect. This approach significantly reduces any need for artisan shot sculpting or corrective shapes and, instead, leverages the prevailing simulation method from engineering and science, the Finite Element Method, to achieve high-performance dynamics, right out-of-the-box.

在Ziva VFX中，FEM是用于复制弹性物体（如肌肉、脂肪和皮肤）或非有机材料（如橡胶、明胶和海绵）的基本数值方法。它是最准确、最灵活、最容易理解的连续离散化策略，因此，它允许用户输入众所周知的、经过验证的参数设置，并立即创建移动和反应有机的对象。
In Ziva VFX, FEM is the underlying numerical approach used to replicate elastic objects such as muscles, fat and skin, or non-organic materials such as rubber, gelatine, and sponge. It is the most accurate, flexible, well-understood of the continuum discretization strategies and as such, it allows users to enter well known, proven parameter settings and instantly create objects that move and react organically.

专有技术作为Autodesk Maya插件出售，扩展了Maya的功能，包括专门为改进角色创建过程而开发的最全面的商业工具集。加载后，用户将在Maya中看到附加的Ziva菜单，这些菜单已填充了健壮逼真的角色模拟所需的功能。
The proprietary technology is sold as an Autodesk Maya plugin, extending Maya’s functionality to include the most comprehensive commercial toolset developed specifically to improve the character creation process. When loaded, the user is presented with additional Ziva menus in Maya that have been populated with the features needed for robust, lifelike character simulation.

在典型的工作流程中，用户首先对骨骼、肌肉、脂肪和皮肤的几何结构进行建模。然后，使用新的Ziva菜单工具，使用“材质”将物理财产应用于这些对象。材质指定模拟对象的属性，例如其灵活性、体积守恒和密度。对于活动的可变形物体，如肌肉，也可以定义纤维方向和收缩力。然后，这些模拟与Ziva“附件”相连，以便它们以真实的方式相互反应和碰撞。本质上，用户可以制作形状，给它们提供解剖学财产，然后让它们像在现实生活中一样协同工作。这个过程是直观的，并由真实的生物学和物理学提供信息。
In a typical workflow, the user begins by modelling the geometry of the bones, muscles, fat and skin. Then, using the new Ziva menu tools, physical properties are applied to these objects using “materials”. Materials specify the attributes of a simulation object such as its flexibility, volume conservation, and density. For active deformable objects like muscles, fiber directions and contractile forces can also be defined. These simulations are then connected with Ziva “attachments” so that they react and collide with each other in a realistic way. Essentially, users make shapes, give them anatomical properties, and then make them work together just as they would in real life. The process is intuitive and informed by true biology and physics.

同样，Ziva系统中的一切都是几何描述的。这使得可以以编程方式解构并重建模拟装备。建议艺术家熟悉zBuilder，这是Ziva的补充开源角色创作python模块，以程序化角色创建过程。一旦zBuilder捕捉到装备的特征，就可以使用它们生成各种附加角色，简化协作，使单个艺术家更容易支持大量资产。
Similarly, everything in the Ziva system is described geometrically. This makes it possible to deconstruct and then rebuild a simulation rig programmatically. It is recommended that artists familiarize themselves with zBuilder, Ziva's supplementary open source character authoring python module to proceduralize the process of character creation. Once a rig’s characteristics have been captured by zBuilder, they can then be used to generate a variety of additional characters, simplifying collaboration and making it easier for an individual artist to support a large number of assets.

Ziva角色可以部署到任意数量的快照中，并使用我们的创作或批处理许可证在本地或渲染场上进行模拟。
Ziva characters can be deployed into any number of shots, and simulated either locally or on a render farm using either our authoring or batch licenses.

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