• 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 Solruk · Nov 16, 2014 at 10:38 PM · c#camera2dtopdownzoom

2D camera zoom smoothing and limitations?

I have a working zoom function for my top down 2D game:

 using UnityEngine;
 using System.Collections;
 
 public class ZoomFunction : MonoBehaviour {
     
     public float zoomSpeed = 20;
     
     void Update () {
         
         float scroll = Input.GetAxis ("Mouse ScrollWheel");
         if (scroll != 0.0f) 
         {
             Camera.main.orthographicSize -= scroll * zoomSpeed;
         }
         
     }
     
 }


It works but it jumps in and out rather than being a smooth transition and I would like to set limitations to how far in or out the player can zoom. Any help/advice would be appreciated.

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

1 Reply

· Add your reply
  • Sort: 
avatar image
1

Answer by robertbu · Nov 16, 2014 at 10:50 PM

Use Mathf.Lerp() or Mathf.MoveTowards():

 using UnityEngine;
 using System.Collections;
 
 public class ZoomFunction : MonoBehaviour {
     
     public float zoomSpeed = 1;
     public float targetOrtho;
     public float smoothSpeed = 2.0f;
     public float minOrtho = 1.0f;
     public float maxOrtho = 20.0f;
 
     void Start() {
         targetOrtho = Camera.main.orthographicSize;
     }
     
     void Update () {
         
         float scroll = Input.GetAxis ("Mouse ScrollWheel");
         if (scroll != 0.0f) {
             targetOrtho -= scroll * zoomSpeed;
             targetOrtho = Mathf.Clamp (targetOrtho, minOrtho, maxOrtho);
         }
 
         Camera.main.orthographicSize = Mathf.MoveTowards (Camera.main.orthographicSize, targetOrtho, smoothSpeed * Time.deltaTime);
     }
 }
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 Solruk · Nov 20, 2014 at 12:13 AM 0
Share

Oh thx this worked perfectly!

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

2 People are following this question.

avatar image avatar image

Related Questions

Zoom in on object and make other objects disappear on zoom?,Zoom in on object and make other objects disappear 0 Answers

Enemy Knockback when hit player 2D Topdown 1 Answer

Camera Smooth Follow 2D from JS to C# 2 Answers

Choppy camera follow. 1 Answer

How do I make my enemy have animations for directions during movemvent 1 Answer


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