Wayback Machinekoobas.hobune.stream
May JUN Jul
Previous capture 13 Next capture
2021 2022 2023
1 capture
13 Jun 22 - 13 Jun 22
sparklines
Close Help
  • 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 8100 · Dec 09, 2013 at 03:36 AM · javascriptuiguialpha

Setting GUI color alpha math issue.

I'm pretty sure my math is just broken but Im basically trying to set the alpha of something relative to the player's Y position.

Im using this math to set the alpha:

 if (PlayerConditions.playerY < 290){
       GUI.color.a = 1 - ((PlayerConditions.playerY - 170) / 120);
       Debug.Log(1 - ((PlayerConditions.playerY - 170) / 120));
       }
       else{
       GUI.color.a = 0;
       }

The debug log is returning 1 which means the object has 100% opacity which is obviously not what I want.

What's wrong with my math here?

In case you're wondering 170 is the height of my death floor which kills the player. 290 is where I want the object to start becoming visible.

Comment
Add comment
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

2 Replies

· Add your reply
  • Sort: 
avatar image
0

Answer by Bunny83 · Dec 09, 2013 at 04:31 AM

     GUI.color.a = 1.0 - ((PlayerConditions.playerY - 170.0) / 120.0);

You used integer values. When you divide by 120 the value becomes 0 due to integer division (1 - 0 == 1)

Comment
Add comment · Show 1 · 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 8100 · Dec 09, 2013 at 04:34 AM 0
Share

Oh wow that was easy, thanks for the help!

avatar image
0

Answer by paulygons · Dec 09, 2013 at 04:32 AM

I spent the past 10 minutes working through this and your math is right (my math is weak and feeble). I think the problem is that you are working with integers and not floats. Try changing the 1 to 1.0 or putting an "f" after it.

AH, bunny beat me.

Comment
Add comment · Show 1 · 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 8100 · Dec 09, 2013 at 04:34 AM 0
Share

haha well thanks for the effort anyway!

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.

Follow this Question

Answers Answers and Comments

17 People are following this question.

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

Related Questions

What is the right choice for UI Performance? 0 Answers

Setting Scroll View Width GUILayout 1 Answer

Is this a problem of unity 3 or i am doing something wrong. 1 Answer

What's wrong with my function? It keeps telling me 'loseText' is not a member of 'UnityEngine.GUIText'. Please help, please and thank you! 0 Answers

Create big city for car game? 2 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