Maya Python实战：游戏与电影行业的全面指南

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"Maya Python For Games and Film" 是一本由Adam Mechtley和Ryan Trowbridge合著的书籍，专注于介绍如何使用Python语言在Maya中进行游戏和电影行业的开发工作。这本书是Maya Python和Maya Python API的完整参考指南。在游戏和电影行业中，Maya是一款广泛应用的3D建模、动画和视觉效果软件，而Python作为其内置脚本语言，提供了强大而灵活的工具集，使得开发者能够自动化和定制化工作流程。这本书的目标读者群体可能是游戏开发者、动画师、特效艺术家或者是希望提升自己在Maya中使用Python能力的技术人员。书中内容可能涵盖以下几个关键知识点： 1. **Python基础知识**：介绍Python语言的基础语法和概念，包括数据类型、控制结构、函数、类和对象等，帮助初学者快速上手。 2. **Maya API**：详细解析Maya的Python API，这是与Maya的内部结构交互的关键，包括节点操作、数据类型转换、场景管理等。 3. **脚本和插件开发**：讲解如何使用Python编写Maya脚本，实现自定义工具和工作流程。同时，可能还会涉及创建和使用Python插件来扩展Maya的功能。 4. **3D图形编程**：介绍如何使用Python进行3D图形处理，如几何形状的生成和修改，光照和材质的设置，以及动画的制作。 5. **游戏和电影行业应用**：提供实际案例，展示如何将Python应用于游戏开发中的资产管理和流程自动化，以及电影特效中的复杂计算和动画序列的生成。 6. **最佳实践和调试**：分享编写高效、可维护的Maya Python代码的最佳实践，并教导读者如何调试和优化脚本。 7. **集成开发环境（IDE）和工具**：推荐和解释如何使用适合Maya Python开发的IDE，如PyCharm，以及其他的辅助工具和库，如PyMel，以提高开发效率。 8. **社区和资源**：介绍Python和Maya社区，包括论坛、文档和开源项目，以帮助读者持续学习和解决问题。 "Maya Python For Games and Film" 是一本全面的指南，旨在帮助读者利用Python在Maya中实现高效的游戏和电影制作。通过阅读本书，读者不仅可以提升自己的Python编程技能，还能深入理解如何在3D行业中利用Python提升工作效率和创新潜力。

Quotation Marks

It is also worth mentioning that some of our code examples throughout the book

make use of double quotation marks ("), some make use of single quotation marks

(’), and some make use of triple sequences of either type (""" or ’’’). While it

should be clear which marks we are using when reading a print copy, double

quotation marks may not copy and paste correctly. In short, make sure you double

check any code you try to copy and paste from the book.

Python Hands On

In our introduction to Python, we have told you how useful it will be to you in Maya.

We’ll now run through a brief example project to get a taste of things to come. Don’t

worry if you do not understand anything in the example scripts yet, as this project is

for demonstration purposes only.

In this example, you are going to execute two versions of the same script, one

written in MEL using only Maya commands, and the other written using the Maya

Python API. These scripts highlight one example of the dramatically different results

you can achieve when using Python in place of MEL.

The scripts each create a basic polygon sphere with 200 by 200 subdivisions (or

39,802 vertices) and apply noise deformation to the mesh. In essence, they iterate

through all of the sphere’s vertices and offset each one by a random value. This value

is scaled by an amount that we provide to the script to adjust the amount of noise.

Please also note that the Python script in the following example makes use of

functions that were added to the API in Maya 2009. As such, if you’re using an

earlier version of Maya, you can certainly examine the source code, but the Python

script will not work for you.

1. Open the Maya application on your computer.

2. In Maya’s main menu, open the Script Editor by navigating to Window → General Editors →

Script Editor.

3. You should now see the Script Editor window appear, which is divided into two halves (Figure

0.1). Above the lower half you should see two tabs. Click on the Python tab to make Python the

currently active language.

4. Download the polyNoise.py script from the companion web site and make note of its location.

5. Open the script you just downloaded by navigating to the menu option File → Load Script in the

Script Editor window (rather than the main application window). After you browse to the script and

load it, you will see the contents of the script appear in the lower half of the Script Editor window,

where they may be highlighted.

6. Click anywhere in the bottom half of the Script Editor to place your cursor in it, and execute the

script by pressing Ctrl + Enter.

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