To download the code, you must agree to the following license:

Copyright 2010, GreenSock, Inc.

"NO CHARGE" NON-EXCLUSIVE SOFTWARE LICENSE AGREEMENT
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PLAIN ENGLISH SUMMARY:

  1. You may use the code at no charge in commercial or non-commercial web sites, games, components, applications, and other software as long as end users are not charged a fee of any kind to use your product or gain access to any part of it. If your client pays you a one-time fee to create the site/product, that's perfectly fine and qualifies under the "no charge" license. If end users are charged a usage/access/license fee, please sign up for a corporate Club GreenSock membership which comes with a special commercial license granting you permission to do so. See http://www.greensock.com/club/ for details.
  2. Use at your own risk. No warranties are offered.
  3. Please respect the copyright.

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LEGALESE:

This is a legal agreement between you (either an individual or a single entity) and GreenSock, Inc. ("GREENSOCK") for the proprietary GreenSock ActionScript code known as TweenLite, TweenMax, TweenNano, TimelineLite, TimelineMax, and other code that is available for download at http://www.greensock.com (this code and documentation, as well as any updates which may at GREENSOCK's sole discretion be provided to you from time to time, are referred to in this Agreement as "PROGRAM") By downloading, copying, or otherwise using the PROGRAM, you agree to the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, please do not download or use the PROGRAM.

I. LICENSE
A. Subject to the terms and conditions of this Agreement, GREENSOCK hereby grants you a non-exclusive, worldwide, non-transferable right to use the PROGRAM in web sites, games, components and other software applications for which the end user is NOT charged any fees. If you would like to use the code in a commercially licensed software product for which end users are charged a fee (either for usage or access), simply sign up for a corporate Club GreenSock membership at http://www.greensock.com/club/.

II. LIMITATION OF LICENSE AND RESTRICTIONS
A. You agree that you will not disclose, sell, rent, or license the PROGRAM's source code or any derivative works thereof to any third party without the prior written consent of GREENSOCK. Derivative works are defined as modifications that add substantive functionality to the PROGRAM and do not include bug fixes or other minor modifications required to operate the PROGRAM as originally intended. Distribution of the source code as part of your Work Product is acceptable so long as the recipients agree to the terms of this Agreement. You agree not to modify or delete GREENSOCK'S existing copyright notice located in the source code.

B. You may use, duplicate, and distribute the compiled object code as embedded in a Work Product created by you, either for your own use or for distribution to a third party so long as end users of the Work Product are not charged a fee for usage of or access to any portion of the Work Product. Please see http://www.greensock.com/licensing/ for descriptions of Work Products that qualify for the "No Charge" license.

III. CONSIDERATION
A. The license rights granted to you under this Agreement are at no charge, but only in the following circumstances: If on your own behalf or on behalf of a third party you incorporate the PROGRAM into a web site, game, software application, program or any component thereof (collectively, "Work Product"), which in the case of a web site, must be accessible to internet users without payment of a fee of any kind, and in the case of a software application, game, program or component, neither you nor anyone to whom you distribute the Work Product charges a user a fee of any kind to use such Work Product or application, game, program or component into which such Work Product is embedded. The foregoing shall apply regardless of whether you are paid to create such Work Product.

B. In the event your intended use of the PROGRAM does not meet the criteria for the "no charge" license rights set forth in the immediately preceding paragraph, then you are not licensed to use the PROGRAM under this Agreement and must license the PROGRAM under GREENSOCK'S separate fee-based Software License Agreement which is granted to corporate Club GreenSock members (see http://www.greensock.com/club/ for details).

IV. TITLE AND OWNERSHIP
A. The PROGRAM is licensed, not sold, and is protected by copyright laws and international treaty provisions. You acknowledge that no title to the intellectual property in the PROGRAM is transferred to you. You further acknowledge that title and full ownership rights to the PROGRAM, including all intellectual property rights therein, will remain the exclusive property of GREENSOCK and you will not acquire any rights to the PROGRAM except as expressly set forth in this Agreement. You agree that any copies of the PROGRAM you make will contain the same proprietary notices which appear on and in the PROGRAM. You agree that GREENSOCK may identify you as a licensee unless you make a written request otherwise. GREENSOCK hereby grants to you the right to disclose that your product, game, software application, component, or other Work Product makes use of GREENSOCK code (for example, "Powered by TweenLite").

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B. GREENSOCK may, at its sole discretion, provide support services related to the PROGRAM, but has no obligation to do so.

VI. TERMINATION
If you at any time fail to abide by the terms of this Agreement, GREENSOCK shall have the right to immediately terminate the license granted herein, require the return or destruction of all copies of the PROGRAM from you and certification in writing as to such return or destruction, and pursue any other legal or equitable remedies available.

VII. MISCELLANEOUS
A. This Agreement shall be construed in accordance with the laws of the State of Illinois. In the event of any dispute between you and GREENSOCK with respect to this Agreement, we both agree that if we cannot resolve the dispute in good faith discussion, either of us may submit the dispute for resolution to arbitration with the American Arbitration Association before a single arbitrator using the AAA Rules for Commercial Arbitration. The arbitrator's decision is final and can be enforced in any court with jurisdiction over such matters.

B. This agreement represents the complete and exclusive statement of the agreement between GREENSOCK and you and supersedes all prior agreements, proposals, representations and other communications, verbal or written, between them with respect to use of the program. This agreement may be modified only with the mutual written approval of authorized representatives of the parties.

C. The terms and conditions of this Agreement shall prevail notwithstanding any different, conflicting, or additional terms or conditions which may appear in any purchase order or other document submitted by you. You agree that such additional or inconsistent terms are deemed rejected by GREENSOCK.

D. GREENSOCK and you agree that any xerographically or electronically reproduced copy of this Agreement shall have the same legal force and effect as any copy bearing original signatures of the parties.

I'd like to learn how to get bonus plugins, update notifications, SVN access, and more.
To join Club GreenSock, you must agree to the following license:

Custom Ease Builder – Easing Made Easy

DESCRIPTION

Sometimes the standard easing equations (Elastic, Strong, etc.) don't give you quite what you want. This tool allows you to interactively draw a curve for your own custom easing equation and it even writes the code for you. Just copy and paste it into your AS3 or AS2 application. The code it writes requires the com.greensock.easing.CustomEase class which is a membership benefit of Club GreenSock.

USAGE

Once you create your custom ease there are a few ways you can refer to your custom easing equation. Here are a few options:

Actionscript:
  1. import com.greensock.easing.CustomEase;
  2. import com.greensock.TweenLite;
  3.  
  4. CustomEase.create("myCustomEase", [{s:0,cp:0.394,e:0.644},{s:0.644,cp:0.894,e:1}]); //do this only once for each custom ease you want to create.
  5.  
  6. //then later...
  7. TweenLite.to(mc, 2, {x:"250", ease:CustomEase.byName("myCustomEase"), delay:1});

Or to speed things up slightly, you could store a reference to the easing function instead of calling the CustomEase.byName() function each time:

Actionscript:
  1. import com.greensock.easing.CustomEase;
  2. import com.greensock.TweenLite;
  3.  
  4. var myEase:Function = CustomEase.create("myCustomEase", [{s:0,cp:0.394,e:0.644},{s:0.644,cp:0.894,e:1}]); //do this only once for each custom ease you want to create.
  5.  
  6. //then later...
  7. TweenLite.to(mc, 2, {x:"250", ease:myEase, delay:1});

Or if you prefer to keep track of the CustomEase instance instead, you can reference its easing function with the "ease" property, like:

Actionscript:
  1. import com.greensock.easing.CustomEase;
  2. import com.greensock.TweenLite;
  3.  
  4. var myEase:CustomEase = new CustomEase("myCustomEase", [{s:0,cp:0.394,e:0.644},{s:0.644,cp:0.894,e:1}]); //do this only once for each custom ease you want to create.
  5.  
  6. //then later...
  7. TweenLite.to(mc, 2, {x:"250", ease:myEase.ease, delay:1});

FAQ

  1. I don't see a download link? Where do I get the CustomEase class?
    The com.greensock.easing.CustomEase class comes with your memebership to Club GreenSock. When you join, you'll get a confirmation e-mail with a link to download the bonus classes.
  2. Does this tool write code that's compatible with other tweening engines?
    It sure does. It follows the standard format for easing equations, accepting 4 parameters: time, start value, change in value, duration. You should be able to use it with virtually any tweening engine.
  3. Is there an AS2 version of CustomEase available or is it only built in AS3?
    Just like my tweening classes, there are AS2- and AS3-compatible versions of CustomEase. They work EXACTLY the same. The interactive tool is built in AS3, but the code it generates is compatible with both.

Need help?

Feel free to post your question on the forums. You'll increase your chances of getting a prompt answer if you provide a brief explanation and include a simplified FLA file (and any class files) that clearly demonstrates the problem.

Donate
Author: Jack Doyle
Copyright 2010, GreenSock (This work is subject to the terms here.)

Comments (14) RSS

Posted by Clemente G on August 16, 2008

Now this is a class I can get into thanks alot for this Jack. I’ll help spread the word

http://blog.kreativeking.com/2008/08/new-class-from-jack-aka-mr-greensock/

Posted by John Webber on August 16, 2008

Jack,

What’s wrong with you? Are you human? This is genius.

THANK YOU!

John

Posted by Platfuse on August 17, 2008

Jack.. this is damn Cool..! too Good

Posted by Torben on August 17, 2008

Fantastic Jack – just fantastic.

Great idea and great use of the Greensock Member program. I really feel I’m getting my moneys worth.

Posted by Sakana on August 17, 2008

great tool, it’s amazing

Thank you !

S.

Posted by Jakob on August 17, 2008

Super cool Jack, thanks for tweaking this great framework, again again! :)

Posted by Bastian on August 17, 2008

with this great tool you have one more club member and I’m really looking forward using your transform classes ;)

Posted by Neo on August 18, 2008

Totally amazing work!
It really helps me a lot!

Posted by Cliff on August 19, 2008

You’re the man, Jack. Thanks for continuing to add excellent tools to our member’s collection–it is sooo worth it to join the club.

Posted by Denver on August 25, 2008

This is one of the slickest apps I have seen – very sharp and very helpful. Thank you so much for sharing!

Posted by Tom Van den Eynde on September 3, 2008

Fantastic!!! Great job!

Posted by Aleksandar Andreev on September 16, 2008

Nice job!
I was looking for something like this for quite a while.

Posted by Rob McCardle on April 29, 2009

This is great code and well worth the money,

Cheers Jack

Posted by James Stone on September 9, 2009

Someone should start publishing some custom tweens they’ve built… Great work Jack!