MAYA协同设计系统中冲突控制策略的研究

发布时间：2019-01-12 09:05

【摘要】：动漫产业有着广阔的发展前景，被称为21世纪创意经济中最有希望的朝阳产业和21世纪的“无烟工业”。对于大规模场景和角色设计而言，，传统意义上的单机操作会产生大量的人力、物力消耗，协同设计的提出为其提供了较好的解决方法，能在多个客户端同时进行场景和角色设计，提高动画创作效率。工业CAD系统中的协同设计研究成果较多，但基于Maya平台的协同设计研究相对较少。因此，借鉴工业CAD系统的一些成功经验，可为Maya协同设计提供较好的思路。本文针对Maya系统的特殊性，通过基于角色以及造型指令类型的优先级来调整Mel造型指令序列的并发控制机制，克服传统令牌环机制的弊病，解决Maya多用户协同的冲突问题。同时，使用Maya C++API以及WinSocket技术，通过插件的方式扩展Maya协同设计功能，并通过局域网基础上的Maya协同实例进行实验，验证其有效性。 Maya软件内置的Mel脚本语言方便扩展，Maya的所有菜单及命令都由Mel脚本语言执行，用户的所有操作也会转化为Mel指令执行，这使得在Maya平台上实现协同设计系统时，在各个客户端传递的数据有明确简易的语义，从而大大减少了协同设计的工作量。本文在Maya内置脚本Mel语言的基础上，借鉴工业CAD协同系统的设计方法，对Maya实时协同设计系统中的并发控制机制进行研究，提出一种基于角色控制和调整Mel造型指令序列的并发控制机制，用来减少因消极冲突避免所带来的执行效率问题，并通过协同实例验证了本文所提出方法的有效性。概括来说，本文的主要工作和创新点有以下三点：（1）分析了传统协同设计系统的发展，当前并发控制方式进行了研究，提出了适用于Maya协同设计的系统结构。（2）提出一种能够适用于Maya平台间协同设计的冲突控制策略——基于协同服务器的非加锁策略，来解决多用户协同设计的冲突问题。（3）在局域网基础上，使用C/S模式，借助网络传输Mel指令语义，使用协同服务器控制冲突，通过Maya C++API以及WinSocket技术，实现Maya的协同设计功能。之所以将协同工作环境设置在局域网中，是因为局域网网络环境比较理想，基本上不存在延迟，各个客户端都能及时地接收并响应消息，对于问题的研究能有所简化。程序从Maya操作指令中获取Mel指令序列，通过网络发送到服务器上，服务器对指令序列做并发处理后，分发到协同的其他机器上，进而在其他协同机器上执行Mel指令，达到同步的效果。
[Abstract]:Animation industry has a broad development prospects, known as the 21st century creative economy the most promising sunrise industry and the 21st century "smokeless industry." For large-scale scene and character design, traditional single-machine operation will produce a large amount of manpower and material resources, and collaborative design provides a better solution for it. It can design scene and character simultaneously in multiple clients, and improve the efficiency of animation creation. There are many researches on collaborative design in industrial CAD system, but there are few researches on collaborative design based on Maya platform. Therefore, reference to some successful experiences of industrial CAD system can provide a good idea for Maya collaborative design. Aiming at the particularity of Maya system, this paper adjusts the concurrency control mechanism of Mel modeling instruction sequence based on the priority of role and modeling instruction type, overcomes the shortcoming of traditional token ring mechanism and solves the conflict problem of Maya multi-user cooperation. At the same time, the Maya C API and WinSocket technology are used to extend the function of Maya collaborative design by plug-in, and the experimental results of Maya collaboration based on LAN are carried out to verify its validity. The Mel script language built into Maya software is convenient to extend. All menus and commands of Maya are executed by Mel script language, and all user operations are translated into Mel instruction execution, which makes it possible to implement collaborative design system on Maya platform. The data transmitted in each client has a clear and simple semantics, which greatly reduces the workload of collaborative design. Based on the built-in script Mel language of Maya and the design method of industrial CAD collaborative system, the concurrency control mechanism in Maya real-time collaborative design system is studied in this paper. A concurrency control mechanism based on role control and adjusting Mel modeling instruction sequence is proposed to reduce the problem of execution efficiency caused by the avoidance of negative conflicts. The effectiveness of the proposed method is verified by a collaborative example. In summary, the main work and innovations of this paper are as follows: (1) the development of traditional collaborative design system is analyzed, and the current concurrency control method is studied, and the system structure suitable for Maya collaborative design is proposed. (2) A conflict control strategy based on collaborative server is proposed to solve the conflict problem of multi-user collaborative design. (3) on the basis of LAN, using C / S mode, using network to transmit Mel instruction semantics, using cooperative server to control conflict, realizing the function of Maya collaborative design through Maya C API and WinSocket technology. The reason why the cooperative working environment is set in LAN is that the LAN network environment is ideal, there is basically no delay, each client can receive and respond to the message in time, and the research on the problem can be simplified. The program acquires the Mel instruction sequence from the Maya operation instruction, sends to the server through the network, after the server carries on the concurrent processing to the instruction sequence, distributes to the cooperation other machine, and then executes the Mel instruction on the other cooperative machine. Achieve the effect of synchronization.
【学位授予单位】：山东师范大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP391.72

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