Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Adding a fracture helper to improve realism

From: Getting Started with Reactor in 3ds Max

Video: Adding a fracture helper to improve realism

When creating rigid body simulations where objects will come into contact with other objects and as a result change position, you'll find situations where maybe a little extra binding agent needs to be added in the mix in order to make those breaking-apart sequences more realistic. If that occurs, a special Reactor helper object called a fracture can assist in holding things together. Let's see how adding a fracture or to our shards of glass changes the way that things break apart. We'll do that using the Breaking Glass05 file, which we brought with us from the last video.

Adding a fracture helper to improve realism

When creating rigid body simulations where objects will come into contact with other objects and as a result change position, you'll find situations where maybe a little extra binding agent needs to be added in the mix in order to make those breaking-apart sequences more realistic. If that occurs, a special Reactor helper object called a fracture can assist in holding things together. Let's see how adding a fracture or to our shards of glass changes the way that things break apart. We'll do that using the Breaking Glass05 file, which we brought with us from the last video.

We are going to want our fracture helper to include all of our glass objects, so let's first make that selection. We can easily do that using the select by name list by typing H. From the dialog starting at the top, we'll select all the objects named Glass Shards. Let's now head to the Reactor toolbar on the left-hand side of our screen. The Fracture Helper, an icon named fracture, can be found about three quarters the way down the list. It's the button that looks like a cube with a zigzag line running through it.

Once you find that command, go ahead and click. With the fracture now having been added to our broken shard objects, let's head to the Modify column. The fracture provides an additional set of controls as to how objects in the fracture break apart. The Energy Loss value is probably the most influential fracture setting. What it controls is the amount of extra kinetic energy that is lost during a collision due to the breaking apart of the fracture bonds. Put another way, energy loss kind of dampens a collision with higher Energy Loss values causing things to hold together that much longer.

So, brittle objects would have a lower Energy Loss, while something like maybe rupturing concrete would appear more realistic in the way it breaks apart by using a higher Energy Loss value. Let's see what changes the fracture might have made to the way our glass breaks apart. To run a preview, let's this time use our Quad menu. That's Shift+Alt+Right-click. Then we can simply press P for Playback. With the addition of the Fracture Helper being now included in the calculation, you'll notice the way that things have slowed down dramatically within that Preview window.

To temporarily change that, we'll adjust our Substeps value. In the Performance pulldown menu, in that little column, we'll take our Substeps to 4. Let's now play through again. You can see how the glass shards appear to be holding on to each other just a little bit longer. Let's experiment with a different Energy Loss value and we'll see how that looks. Back on the right-hand side, let's change the Energy Loss to let's say 0.1. Once you've done that, let's Preview again.

With the lower setting, you can see that the additional glue laid on by the fracture doesn't have quite as much impact this go-round. Let's see what an Energy Loss value of 0.5 would look like. You can see that with each change in the Energy Loss value we're getting a little bit of a different result.

How does that compare to not using the Fracture Helper? Let's do this. After closing the Preview window on back on the right-hand side, we've got a check mark we can activate called Disable. Let's do that. You'll find that control way down at the bottom. I've got to be honest: because of the extremely lightweight of our glass pane, we really don't need that extra level of fracture binding.

So in this case, why don't we simply leave the fracture being disabled? Now, if you wanted, as an alternative you can always go in the scene, select it, and delete it from the sim. Either way, removed or disabled, it will have no impact on our results. So that will give you a little background on using Fracture Helpers with a Rigid Body Simulation. If things seem to be exploding apart too quick or with what seems to be not enough resistance, make sure that you consider using a fracture to help alleviate that problem. Let's go ahead and save our scene up as Breaking Glass06, and we'll take it with us into our next video where we'll start adding a few materials to our scene.

Show transcript

This video is part of

Image for Getting Started with Reactor in 3ds Max
Getting Started with Reactor in 3ds Max

39 video lessons · 4149 viewers

Steve Nelle
Author

 
Expand all | Collapse all
  1. 4m 57s
    1. Welcome
      1m 24s
    2. How to use this course
      1m 7s
    3. Using the exercise files
      2m 26s
  2. 56m 21s
    1. Understanding how Reactor works
      7m 33s
    2. Accessing the Reactor commands and controls
      4m 1s
    3. Working with Reactor's collection types
      7m 51s
    4. Working with Soft Body Modifier types
      5m 56s
    5. Using constraints to limit object movement
      7m 46s
    6. Assigning physical properties using the Property Editor
      7m 45s
    7. Previewing a simulation
      3m 56s
    8. Creating keyframes for a simulation
      4m 58s
    9. Controlling the accuracy of your simulations
      4m 30s
    10. Choosing a physics engine to run your simulations
      2m 5s
  3. 51m 46s
    1. Project overview
      56s
    2. Modeling the broken glass
      13m 17s
    3. Adding the simulation's physical properties
      1m 53s
    4. Animating the breaking object
      5m 4s
    5. Creating the Rigid Body Collection
      1m 32s
    6. Previewing the simulation
      5m 20s
    7. Adding a fracture helper to improve realism
      4m 38s
    8. Building the scene's materials
      5m 36s
    9. Creating the keyframed animation
      4m 41s
    10. Setting up the visibility track for the glass
      8m 49s
  4. 26m 53s
    1. Project overview
      1m 21s
    2. Setting up the scene's rigid bodies
      4m 3s
    3. Adding the soft bodies into the simulation
      9m 18s
    4. Working with the Soft Body Modifier settings
      8m 3s
    5. Making the final adjustments and creating the keyframes
      4m 8s
  5. 27m 39s
    1. Project overview
      1m 17s
    2. Setting up the Reactor cloth elements
      12m 34s
    3. Animating the rigid body curtain clips
      5m 41s
    4. Making adjustments to the curtain cloth modifiers
      6m 5s
    5. Creating keyframes in preparation for rendering
      2m 2s
  6. 20m 18s
    1. Adding the physical properties and collection
      3m 7s
    2. Creating the water helper
      3m 19s
    3. Adjusting the water parameters and creating the keys
      7m 43s
    4. Building a believable water material
      4m 15s
    5. Wrapping things up
      1m 54s
  7. 41s
    1. Goodbye
      41s

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now "Already a member? Log in

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Getting Started with Reactor in 3ds Max.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.