moondeer

i would love to see any example hip files on this topic anyone might have.

appreciation in advance to anyone willing to share.

this looks interesting.

cmiVFX Releases New Houdini Frictional Viscosities In Motion
High Definition Training Videos for the Visual Effects Industry

Princeton, NJ (May 24th, 2013)‚ cmiVFX has released Visco-Elastic Fluids in Houdini. This video is based around the theme of Learn, Test & Create. Firstly we'll be covering basic ways of producing a Jiggly / Squishy effect without heavy techniques. We'll also be learning about adding Microsolvers into Houdini's solvers and using a ready made group of microsolvers wrapped in a digital asset. Next we'll cover a workflow for Testing the different parameters of a simulation. As sometimes there are many different values you'd want to try, we'll set up a simulation and run it many times with certain values changed - then bring them all side-by-side for comparison. Finally we will Create an exploding egg with elasticity, setting up egg white and egg yolk in a cool slow motion scene. As a bonus chapter, we will create an “Exploder” digital asset and import forces for use in Fluids / Pyro / RBD. This video also looks at some brand new Houdini 12.5 features such as Open VDB tools and the Point Wrangle node.

VIMEO TEASER
https://vimeo.com/66951165 [vimeo.com]

Short Description
This video covers going deeper into Houdini's Solvers and DOP context. Using microsolvers and digital assets we'll add Visco-Elastic functionality that isn't in the FLIP solver by default. We'll follow a path of Learn, Test and Create which could be applied to any new techniques and effects you might try in Houdini.


NOTICE TO VIEWERS:
(A basic understanding of SideFX Houdini functionality and use is recommended before viewing this lesson.)

Here at cmiVFX we maintain a current training library for the latest versions of popular software titles. When it comes to high end CG and VFX training, there is only once choice… cmiVFX!

|||||||||||||||||||||| Houdini Frictional Viscosities In Motion ||||||||||||||||||||||
http://cmivfx.com/store/546-Houdini+Frictional+Viscosities [cmivfx.com]

Chapter Descriptions

Jiggle And Squish
To start off we'll be looking at some methods of achieving some jiggle and squishy motion without using flip fluids. The aim is to see if we can get a good result with lower level tools instead of diving straight into a higher technique. This could save a lot of valuable time developing a shot.

Microsolvers Intro
This chapter is about getting a better understanding of how microsolvers work within a solver. We'll perform some R&D to recreate how non-newtonian fluids act in real life, adding extra functionality to the base FLIP solver.

Elasticity Intro
We will be using an asset that uses some microsolvers to add Visco-Elastic properties to the FLIP solver. Much like if handed the asset in a production environment, we will learn how its created and cover the basics of how to use it.

Tests Create
Now we know how microsolvers and the elasticity asset work, lets create some tests to see the effect different parameters have. To start with we will set up a zombie head to melt into gloop.

Tests Wedge
In this chapter we will look into how we can efficiently run a simulation any number of times, changing values in each version. We'll set up 5 variations of the same simulation using Takes and the Wedge Rop, and cover how to use either random or precise values for each.

Tests Mesh
With our simulation variations cached to disk, we can use the wedge ROP again to mesh each one. We will also look at some new features in Houdini 12.5 such as Open VDB and Point Wrangle.

Tests Display
As a small final chapter for this section, we will lay out our different tests side by side so we can directly compare the differences in each one. This will really emphasize differences and allow for direct comparisons.

Egg Setup
So finally lets create! This chapter we'll get our simulation up and running. We'll create an egg that has different color, viscosity and refraction for the egg white and yolk.

Egg Elastic
In this chapter we will create a flexible system that will give us impulse / explosion velocities. Alongside this we can add on the elasticity asset and get our egg looking cool!

Egg Finish
Finally we'll cover some finishing touches. I'll look at the final simulation and mesh settings i used, as well as looking into notes points for rendering. We'll use the new Open VDB tools to create the egg yolk interior and add our custom refraction parameter into a shader.

BONUS! Exploder Asset
As a bonus chapter, we'll look into turning the system we made in chapter 09 into a digital asset. We'll then use this asset to affect Pyro / Fluid simulations and RBD's!

About the Instructor
Craig Tonks is a young VFX Artist out to create beautiful and exciting images. With an MA in Digital Effects and a growing number of VFX jobs under his belt the future is bright and fun! His passion for playing in Houdini whilst combining both artistic and technical methods makes for fun and explorative videos. Always on the lookout for work, friends and feedback you can contact him at: craig@mrtonks.co.uk

Additional Credit
Special Thanks to John Lynch for his research and hard work that resulted in this excellent visco-elastic flip OTL asset. (included in project files)

Project Contents
All cmiVFX videos come with all the training materials you can need right from our website. No matter what time of day, your location, or how your feeling, cmiVFX will be there waiting for you!

This video is available today at the cmiVFX Store: http://store.cmivfx.com/ [store.cmivfx.com]

About cmiVFX
cmiVFX is the leader in High Definition Video Training for the Visual Effects Community. Register for FREE and receive hours of FREE content at the cmiVFX Video-on-Demand Player.For additional information about cmiVFX, visit http://www.cmivfx.com [cmivfx.com] or email eric@cmivfx.com © 2013 cmiVFX | cmiStudios | cmiUniverse. All rights reserved.

cmiVFX Releases New Houdini Destructive Cracking Techniques
High Definition Training Videos for the Visual Effects Industry

Princeton, NJ (May 1st, 2013) cmiVFX has released their newest lesson Creating Cracks Digital-Asset in Houdini. Voronoi fracture is powerful but also has some limitations. How we can have full control over the shape of the pieces? How we can make animation for crack propagation? How we can break only certain parts of an object while other areas remain intact? In this lesson Mehdi Salehi reveals a new VFX technique in Houdini. In this lesson we will create a new digital asset to answer these questions. This new tool can use patterns for creating cracks. You will learn that almost anything can be used as the pattern. For example, You can use lines, L-system or image files as the pattern. You will learn our new digital asset has even more power. It can be used to create precise tear patterns for cloth simulation even for low poly objects. This lesson offers new exclusive effect technique which is recommended to all Houdini users.

VIMEO TEASER HERE:
https://vimeo.com/65339465 [vimeo.com]

Short Description
The aim is to create a tool to use a predefined crack pattern such as image files, wires or L-systems for cracking an object. No previous knowledge or experience is required to easily follow along. Mehdi Salehi tackles several examples to cover Rigid body and cloth simulations using this new tool.

NOTICE TO VIEWERS:
(No previous Houdini knowledge is required to follow this lesson. Crack Digital asset is included.)

|||||||||||||||||||||| New Houdini Destructive Cracking Techniques ||||||||||||||||||||||
—> http://cmivfx.com/tutorial/544-Houdini+Cracking+Techniques [cmivfx.com]

Chapter Descriptions

Introduction
A quick view on all chapters. It Shows where we start and where we go; A map for our great adventure!!!

Basic Knowledge
This chapter gives important clues about images and Houdini. It shows you how Houdini can give life to still images. It is our starting position.

Creating The Asset
In this chapter we evoke the power of COPs (channel operators)! This chapter shows you the main idea for creating the crack digital asset. It teaches you how to use the crack pattern for creating precise cracks on an object. Anything such as L-systems or curves can be used as a crack pattern. The power is that precise cuts are possible even for low poly objects.

Crack Asset And Rigid Body Objects
This chapter talks about simulating the pieces created by the crack asset. It shows the problems of using fracture rigid body dynamic and how we can deal with them. Also, you can see how cracks can be animated to create a crack propagation effect. There are two examples here. In the first example, the chapter discusses about how to use the crack asset for breaking a car window. You will learn how to create crack propagation and also how to simulate the pieces. In the second example the chapter talks about using the crack asset to break a bottle. The cool thing is that only specific area of the objects affected by crack asset and the other areas remain intact. A powerful feature for rendering broken glass!!!

Crack Asset And Cloth Objects
The other possible use of the crack asset. A journey to cloth simulation! This chapter shows you how this new crack asset can be used for cloth simulation. Now it is possible to create precise tear patterns and then simulate them. You can even animate tearing of a cloth object. The cool thing is that the cloth object can be a fairly low poly object. Also this chapter shows you some important notes and tricks about simulating cloth objects.

About the Instructor
My name is Mehdi Salehi. I started my journey to the mysterious world of 3D and VFX about 10 years ago and have worked as CG artist and VFX supervisor for many companies. Now, it is my honor to be a member of the cmiVFX family. My hobbies are music and football, of course playing, not hearing or watching! My Email is msalehi.164@gmail.com. If you have any questions please feel free to contact me.

Project Contents
All cmiVFX videos come with all the training materials you can need right from our website. No matter what time of day, your location, or how your feeling, cmiVFX will be there waiting for you!

This video is available today at the cmiVFX Store: http://store.cmivfx.com/ [store.cmivfx.com]

About cmiVFX
cmiVFX is the leader in High Definition Video Training for the Visual Effects Community. Register for FREE and receive hours of FREE content at the cmiVFX Video-on-Demand Player. ( http://store.cmivfx.com/login [store.cmivfx.com] ) For additional information about cmiVFX, visit http://www.cmivfx.com [cmivfx.com] or email eric@cmivfx.com © 2012 cmiVFX | cmiStudios. All rights reserved.