Resolved Poissible Bug, UI Slider radial option missing

I don't know if this is a bug or not, but I had a 2019 project with radial sliders working using the legacy UI slider, and there was an enum field to set it to radial CW or CCW.

When imported to Unity 2020 LTS, the slider still functions as a radial slider, all perfectly, however, I cannot change it back to a horizontal/vertical bar slider. Only the enum field for direction is available.

You can see in this screenshot that the slider is in fact a radial slider, however, there is no enum field in inspector to change it from bar to circular.

 

I don't think the

Slider

ever had a radial function.

Are you just thinking of the

Image

Component? It supports radial fill.

Otherwise if you're sure you had a radial Slider, perhaps it was part of the unofficial Unity UI Extensions project?

You can get the extensions here:

https://github.com/Unity-UI-Extensions/com.unity.uiextensions

 

Nope, you are correct, the radial fill is on the image and not the slider component. Thanks!
I feel really dumb right now, it's been so long since I touched a radial slider I just completely forgot.

 

You could probably look at the source for Slider and Image and roll your own pretty easily.

https://github.com/Unity-Technologies/uGUI

ACTUALLY... come to think about it, maybe it even exists here:

https://github.com/Unity-UI-Extensions/com.unity.uiextensions

If it isn't in there maybe you could use it as reference when making it yourself.

I'll attach my "rotate Z via drag" package... GO!

Code (csharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. // by @kurtdekker
6. // simple example of rotating something like a dial on a safe
7.  
8. public class RotateZViaDrag : MonoBehaviour
9. {
10.     public bool RotateAroundAxis;
11.  
12.     Vector3 lastPosition;
13.  
14.     void OnMouseDown()
15.     {
16.         lastPosition = Input.mousePosition;
17.     }
18.  
19.     void PerformLinearRotation()
20.     {
21.         Vector3 currPosition = Input.mousePosition;
22.  
23.         Vector3 difference = currPosition - lastPosition;
24.  
25.         lastPosition = currPosition;
26.  
27.         // now choose what axis to care about... this adds X and Y
28.         float change = difference.x + difference.y;
29.  
30.         // and it rotates it around the Z (forward)
31.         transform.Rotate(new Vector3(0, 0, change));
32.     }
33.  
34.     void PerformCircularRotation()
35.     {
36.         // where is our center on screen?
37.         Vector3 center = Camera.main.WorldToScreenPoint(transform.position);
38.  
39.         // angle to previous finger
40.         float anglePrevious = Mathf.Atan2(center.x - lastPosition.x, lastPosition.y - center.y);
41.  
42.         Vector3 currPosition = Input.mousePosition;
43.  
44.         // angle to current finger
45.         float angleNow = Mathf.Atan2(center.x - currPosition.x, currPosition.y - center.y);
46.  
47.         lastPosition = currPosition;
48.  
49.         // how different are those angles?
50.         float angleDelta = angleNow - anglePrevious;
51.  
52.         // rotate by that much
53.         transform.Rotate(new Vector3(0, 0, angleDelta * Mathf.Rad2Deg));
54.     }
55.  
56.     void OnMouseDrag()
57.     {
58.         if (RotateAroundAxis)
59.         {
60.             PerformCircularRotation();
61.         }
62.         else
63.         {
64.             PerformLinearRotation();
65.         }
66.     }
67. }

 

I didn't need that. I just change the image slice option on fill bar to horizontal. But thanks.