[FXGEAR] PBD Cloth Tearing in Houdini

PBD Cloth Tearing in Houdini

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[FXGEAR] PBD Cloth Tearing in Houdini introduce

Course Description

In this online course, the viewer will learn how to use Houdini to build a solver that can be used to simulate soft bodies based on the default grains solver; In this case we will use the solver to tear up a piece of cloth.

Who is this tutorial for?

This course has been designed for artists with intermediate knowledge of Houdini and somewhat comfortable with VEX scripting.

What will I learn in this tutorial?

After viewing this course, people can expect to be able to create and control attributes to manipulate the behavior of soft bodies, produce a detailed and realistic cloth tearing simulations, be familiar with PBD techniques that are used right now in most mainstream movies and TV shows.

00 Introduction

01 Setting up Attributes

02 Noise Up the Strength

03 Inside the Solver

04 Art Directing the Cloth

05 Meshing the Cloth

06 Retaining the Fibers

Cloth simulation has many applications areas like computer animation, computer games or virtual reality. The simulation of cloth tearing is often a non-trivial process because it requires the capacity of dynamically updating different cloth representations and data structures.

For interactive animations, this must be performed as fast as possible. We present a comprehensive description of a technique that can be used to simulate cloth being torn or cut. Despite simplistic and not physically accurate, it is fast and can provide visually pleasing results.

Also, it can be easily adapted to work with nearly any cloth model. As an original contribution, we introduce an optimization of this technique by using an especially adapted half-edge data structure. We have implemented the techniques described in this paper in a physics simulator that was specially developed for a garment CAD system. Our tests have shown fast and attractive results.

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