Make scrolling move faster in scrollRect?

Currently when you scroll something in a scrollRect, by using the mouse, touch etc., it's on a 1:1 basis.
Move the mouse 100 pixels, and the content is scrolled 100 pixels.

Is there a way to e.g. double this?
So when moving the mouse (or dragging when using touch) 100 pixels, the content is scrolled 200 pixels.
I guess I'm looking for a multiplier or something, but I don't know where to find it, or how to achieve it.
Hope someone can help me

 

Isn't there a sensitivity in the scrollview prefab? Have you tried playing with that?

 

There is, but it's got to do with sensitivity towards the start of scrolling, not scrolling speed itself.

 

Pretty sure scrolling speed is based on the User's Scroll wheel setup via the machine's system settings.

 

And on mobile? I want to be able to increase scroll speed on mobile, when touch-dragging to scroll.

 

Mobile is based on momentum, how quick the user flicks their finger.

 

I'm pretty sure it's not. It seems to be 1:1 when I make something with scrollRect. Both in editor and live on devices.

 

You could look into this.

 

Pretty sure it is.

 

As I said above, scrollSensitivity has to do with sensitivity towards the start of scrolling, not scrolling speed itself. The manual is poorly worded.

 

There is a deceleration. Try decreasing that?

 

Again it's scrolling speed when scrolling I'm after (when touching and scrolling) - not deceleration, which occurs after you've scrolled (released touch). There's no deceleration occuring when you're actively scrolling obviously.

 

So, normally when you scroll with your finger the user is "dragging" the window in the direction they're moving their finger. It gives the illusion that they're physically dragging the object. I implemented my own drag feature quite easily but my first iteration had the speed too high. Every pixel I moved my finger the object underneath moved 2. It was a really, really awkward feeling.

Basically, I don't think you want what you're asking for. Every app I've ever used, game or not, you just flicked the contents up really fast and let is scroll for a long time if you wanted to scroll quickly. Reduce the deceleration time so people can flick, call it good. No one will think, "Golly I wish this was faster" except you, most likely.

 

Sorry to necro-post this thread, but I made a quick patch to the Unity ScrollRect to get faster-than-finger scrolling. It is AWESOME on mobile.

It is EXTREMELY useful when you have large images of content, and yet you want to quickly go through them without having to whip them along "ballistically."

(This link updated 6:36 AM 3/13/2021, along with the line numbers below)

If you go to this file:

https://github.com/Unity-Technologies/uGUI/blob/2019.1/UnityEngine.UI/UI/Core/ScrollRect.cs

(This file is also available from the Unity Package Manager.)

Then you can download ScrollRect.cs and modify it to make your own that supports higher-than-finger scroll rates. Once you use it, every other scroll rate with 1:1 finger mapping (i.e., normal Apple / Android scroll rates) just feels glacially slow.

I recommend renaming the class and filename, such as "MyScrollRect.cs" and of course the internal MonoBehavior itself.

The first patch is about line 104 in the property declarations, add these two lines:

Code (csharp):

1. [SerializeField]
2. private float m_ScrollFactor = 1.0f;
3. public float scrollFactor { get { return m_ScrollFactor; } set { m_ScrollFactor = value; } }
4.  

The second patch is inside the OnDrag() method, approximately line 763 in the original file, AFTER the pointerDelta is calculated, but before it is used to calculate position:

Code (csharp):

1. var pointerDelta = localCursor - m_PointerStartLocalCursor;
2. pointerDelta *= m_ScrollFactor;    // this line is new!
3. Vector2 position = m_ContentStartPosition + pointerDelta;

Now you're done. Use this newly-named ScrollRect anywhere you would use the Unity one and you can have faster-than-finger (or faster-than-mouse drag) scrolling. It's awesome if I do say so myself!

 

@Kurt-Dekker Thank you very much! You saved my day, sir!

 

@Kurt-Dekker Thanks! It really works!

 

@Kurt-Dekker Your fix works like a charm. Thank you

 

@Kurt-Dekker Thank you. This is my change. Drop "ScrollRectFasterEditor.cs" in Editor folder and "ScrollRectFaster.cs" in Scripts folder

 

@Kurt-Dekker Thanks still works like a charm.

 

After I put in the modified script in my assets folder, How do I add the script to the gameobject, it says script not found?

 

Make sure it a) compiles without any errors, b) is named uniquely, and c) has the same exact filename as the class name, including capitalization.

 

I've created also some scripts which improve speed of scrolling but in a little bit different way. Previous ones was making faster entire dragging and inertia scrolling. I wanted only that inertia to be faster (moment when you stop dragging screen and it's scrolling by "force" after swipe).
It's simple to Use:
- Add ScrollRectFasterEditor.cs to "Assets/Editor". If you don't have this catalogue then create one.
- Add ScrollRectFaster.cs anywhere in your Asset folder.
- Create ScrollView GameObject
- Change ScrollRect script to ScrollRectFaster script (just delete old one and drag on GO to add new script)
- Finally drag all required things to ScrollRectFaster like Content, Viewport etc.
And that's all.

To increase speed of scrolling edit value Inertia Velocity Multiplier (Like on screenshot)

Important: As i wrote it's working with inertia so checkbox Inertia needs to be checked to display that option to increase scroll speed.

 

@Kurt-Dekker, thanks, your solution works straightforward.

 

Same here, thanks KaroLRG !

Suddenly we can have a really fast and smooth scrollview in Unity ! It is incredible Uity did not fixed/improved their solution till 2015 !

 

I set scroll sensitivity to 50 and it works great (my items are 50px high, so scrolls 1 item on each wheel click)

I looked at the current source, but it's pretty clear that this is exactly what you want to have: https://bitbucket.org/Unity-Technol...nityEngine.UI/UI/Core/ScrollRect.cs#lines-648

The only myster to me, is why Unity just doesn't set this to anything between 30 and 200 themselves by default, but hey, you can change it easily

 

I imagine the behavior of this constant is dependent on the Canvas' RenderMode as well as the CanvasScaler's UIScaleMode. Perhaps Unity chose a value that works for the default settings and you've since changed those?

 

Hello. Can you send me please these files for scrollbar, I have no access on BitBucket. And where I need to put them into the project?

 

Thank you. I did it. This is awesome

 

Thank you. This is really awesome.

 

thanks a lot @Kurt-Dekker

 

Thanks, Kurt

 

Hi everybody!
Thanks for scripts and here is my gem to our collection.
If you want to scroll feel more natural just comment lerp part in inertia block

 

I'm late to the party. But wanted to share what helped me here.
First off, thanks @KarolRG for the scripts! They're magic.
Seems like the scroll UI behavior is little more complex in nature - two different swipes getting registered (longer scroll, shorter scroll). More like a MagLev behavior and I think the longer scroll works with existing Unity's ScrollRect script while the shorter scroll seems to be tricky. Also, the Lerp was more jagged with 'Application.targetFrameRate' on mobile has a default other than '60'.

These configs worked for me along with scripts shared by KarolRG:
1. Define 'Application.targetFrameRate = 60;' in one of main scripts 'Start()'
2. Attached config after trial and error

 

Was looking for a way to improve ScrollRect, and I just found this topics and the script which is a gem. Working perfectly
Great job @Kurt-Dekker. Thx for the work!

 

Thanks works great on mobile