• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by ralozkolya · Aug 01, 2012 at 12:40 PM · rotationtransformrotate

Rotation Angle not precise

Hello! So I want to rotate an object by fixed angle on a key press. I'm using this code:

 function Update () {
 
 if (Input.GetKeyDown("right"))
 {
 transform.RotateAround (transform.position, transform.forward, -15);
 }
 
 if (Input.GetKeyDown("left"))
 {
 transform.RotateAround (transform.position, transform.forward, 15);
 }
 }

So after several keypresses I get this Angle:

alt text

Any suggestions, why I get this "almost" 75 degrees?

P. S. Rotation direction doesn't change anything

untitled.png (5.6 kB)
Comment
Add comment · Show 1
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image whydoidoit · Aug 01, 2012 at 12:44 PM 1
Share

Unity uses floating points - floating points are not accurate and do things like that all the time.

1 Reply

· Add your reply
  • Sort: 
avatar image
1
Best Answer

Answer by Paulius-Liekis · Aug 01, 2012 at 01:45 PM

Floating point precision

Comment
Add comment · Show 2 · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users
avatar image ralozkolya · Aug 01, 2012 at 06:00 PM 0
Share

Paulius Liekis, whydoidoit, thanks! So it can't be fixed anyhow?

avatar image whydoidoit · Aug 01, 2012 at 06:01 PM 0
Share

Not really, you could $$anonymous$$athf.RoundToInt() but no guarantees even then.

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

8 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

How to prevent Z axis rotation ? 1 Answer

Find left joystick Vector2 away from sprite's up direction. 1 Answer

I could not be more lost (rotation script) 0 Answers

How to make a bone rotate facing towards a given Transform? 0 Answers

Quick Shortcuts for Rotation 0 Answers


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges