The Gnomon Workshop – Houdini Randomization and Scattering with Robby Branham

在本书中，资深视觉效果艺术家Robby Branham概括介绍了Side FX的Houdini 17中的随机化和散射。Houdini有几种生成随机化的方法，Robby通过点SOP节点和参数表达式讨论了HScript和VEX脚本的基础知识。由Robby创建的表达式备忘单有助于减少启动和运行表达式所需的时间，以及如何在创建复杂世界的开始阶段切断大量不必要的变量和函数。逐步演示包括散射的基础知识，包括沿曲面散射和使用随机化技术调整位置、比例和旋转，以及沿曲面散射多个对象的不稳定技术。在多个制作示例中教授并使用了复制冲压表达式，包括创建草地补丁和岩石生成，如封面艺术中所示。本书涵盖了如何利用标题中的所有技术在封面艺术中创造沼泽的基本知识，以及使用视觉效果制作集解决问题的全面视角。最后，Robby对封面艺术进行了广泛的细分，涵盖了从概念化和预视觉化、资产开发、布景装饰和布局、照明和渲染到最终合成的工作流程和项目文件。Houdini随机化和分散设计的目的是让艺术家能够快速跟上创建复杂服装技术的速度，这将使他们能够以生产效率创建大型和复杂的世界。

Duration 3h 46m Project Files Included MP4

Title: The Gnomon Workshop – Houdini Randomization and Scattering with Robby Branham

Info:
In this title, Senior Visual Effects Artist Robby Branham provides a broad overview of randomization and scattering in Side FX’s Houdini 17. Houdini has several ways to generate randomization and Robby discusses the basics of HScript and VEX script through the Point SOP node and parameter expressions. An expression cheat sheet created by Robby is provided to help reduce the time needed to get up and running with expressions, as well as how to cut through the vast amount of variables and functions which are unnecessary at the start of creating complex worlds. Step-by-step demonstrations cover the basics of scattering, including scattering along a surface and using randomization techniques to adjust location, scale, and rotation, along with instacing techniques to scatter multiple objects along a surface. Copy Stamping expressions are taught and used in several production examples, including creating grass patches and rock generation as seen in the cover art. The basics of how to create the swamp in the cover art utilizing all the techniques in the title are covered, along with a comprehensive look on problem solving with a visual effects production set. Lastly, Robby gives a broad breakdown of the cover art, covering the workflow and project files from concepting and previsualization, asset development, set dressing and layout, lighting and rendering, through final compositing. Houdini Randomization and Scattering is designed to enable artists to quickly get up to speed with creating complex set dressing techniques that will enable them to create large and complicated worlds with production efficiency.