The Gnomon Workshop – Liquid Simulation on Houdini

模拟牛奶倒入一碗麦片中，学习与刚体动态对象和 FLIP 流体粒子交互的艺术。 Stavros Sofianos 举办的这个 3.5 小时的研讨会将教您如何制作动态的、艺术指导的飞溅效果，将牛奶装满碗，让麦片片漂浮起来。本教程是为对 Houdini 有基本了解的中级艺术家创建的。

Stavros 首先创建不同的谷物层，并以简单而有效的方式放置它们，以便您稍后使用 FLIP 解算器创建令人愉悦的飞溅交互。您还将探索 Voronoi 断裂技术来正确创建可在 RBD 模拟中使用的代理，以生成碗中谷物的初始状态。

您将了解如何将代理重新连接回原始几何形状，如何为 FLIP 模拟创建发射器，如何掌握自定义粘场技术，以便控制牛奶在碗和麦片上的粘性，以及您将学习如何有效地设置 RBD 和 FLIP 求解器以相互交互。

本次研讨会还详细介绍了如何为 FLIP 模拟创建我们自己的自定义网格，展示了生成湿贴图的技术，并涵盖了 Stavros 使用 Arnold 渲染器的着色和渲染技术。

本次研讨会提供的项目文件包括两个碗几何文件（一个为 Alembic，一个为 FBX 格式）以及包含 Stavros 为本次研讨会创建的设置的 Houdini 文件。还提供了模型和所使用的免费资源的链接。

MKV | Video: H264 1920×1080 | Audio: AAC 48000Hz 2 Ch
Language: English | Duration: 2h 46m | Size: 2.9 GB

Simulate milk pouring into a bowl of cereal to learn the art of interacting with Rigid Body Dynamic objects and FLIP Fluid Particles. This 3.5-hour workshop by Stavros Sofianos will teach you how to craft a dynamic, art-directable splash effect, filling the bowl with milk and allowing your cereal pieces to float. This tutorial is created for intermediate-level artists with a basic understanding of Houdini.

Stavros begins by creating various layers of cereal and placing them in a simple yet effective way that will allow you to create a pleasing splash interaction later using the FLIP solver. You’ll also explore a Voronoi fracture technique to correctly create proxies that can be used in an RBD simulation to generate the initial state of the cereal in the bowl.

You will discover how to reconnect the proxies back to the original geometries, how to create the emitters for the FLIP simulation, how to master a custom stick field technique so you can control the stickiness of the milk on the bowl and on the cereal, and you’ll learn how to efficiently set up an RBD and FLIP solver together to interact with each other.

This workshop also details how to create our own custom mesh for the FLIP simulation, shows a technique for generating wet maps, and covers Stavros’s shading and rendering techniques using the Arnold renderer.

Project files provided with this workshop include two bowl geometry files (one in Alembic and one in FBX format) and the Houdini file with the setup that Stavros created for this workshop. Links to the models and free assets used are also provided.

CHAPTER LIST
00. Preview
01. Introduction
02. Import & Prepare the Geometries
03. Creating the Proxies for the RBD Simulation
04. RBD Simulation: Initial State of the Cereal
05. Create the Emitters for the FLIP Simulation
06. RBD & FLIP Interaction Simulation
07. Create the Mesh of the FLIP Simulation
08. Create Wet Maps
09. Prepare the Final Scene for Rendering
10. Shading & Rendering with Arnold