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Question How to create button with irregular sprite shape?

Discussion in 'UI Toolkit' started by ununion, May 16, 2022.

  1. ununion

    ununion

    Joined:
    Dec 2, 2018
    Posts:
    268
    Now i can change sprite for button background,but how do i change mouse event shape also?
     
    ununion, May 16, 2022
    #1

  2. ununion

    ununion

    Joined:
    Dec 2, 2018
    Posts:
    268
    In ugui i can use alphaHitTestMinimumThreshold to achieve.
     
    ununion, May 16, 2022
    #2

  3. antoine-unity

    antoine-unity

    Unity Technologies

    Joined:
    Sep 10, 2015
    Posts:
    733
    Hi, this is not supported at the moment.
     
    antoine-unity, May 17, 2022
    #3
    ununion likes this.

  4. antoine-unity

    antoine-unity

    Unity Technologies

    Joined:
    Sep 10, 2015
    Posts:
    733
    Thinking about it some more, it's probably feasible if you create (derive) a custom Button and override the ContainsPoint method. You could check the texture's alpha channel based on the specified point given to this method.
     
    antoine-unity, Jul 25, 2022
    #4

  5. Halquigo

    Halquigo

    Joined:
    Mar 29, 2017
    Posts:
    6
    Oh!
    Would you please confirm this?
    'Coz I found that this feature is not working correctly on a recent build with Unity 2022.1.21f1.
    But I cannot find any official notice about this at the release notes or documents.
    Thank you in advance.
     
    Halquigo, Nov 7, 2022
    #5

  6. antoine-unity

    antoine-unity

    Unity Technologies

    Joined:
    Sep 10, 2015
    Posts:
    733
    This feature is not supported. Do you mean that we should explicitly document it "as not supported" in the documentation?
     
    Last edited: Nov 7, 2022
    antoine-unity, Nov 7, 2022
    #6

  7. Halquigo

    Halquigo

    Joined:
    Mar 29, 2017
    Posts:
    6
    Oh, maybe there's a mis-understanding between us.

    The alphaHitTestMinimumThreshold worked fine on my app built with Unity 2021.1.28f1.
    But it's not working correctly with Unity 2022.1.21f1.

    I thought you meant that alphaHitTestMinimumThreshold is no longer used.

    What am I missing?
     
    Halquigo, Nov 7, 2022
    #7

  8. antoine-unity

    antoine-unity

    Unity Technologies

    Joined:
    Sep 10, 2015
    Posts:
    733
    I think the misunderstanding is that I am talking about UI Toolkit (where it's not supported). If you are already using featur successfully in 2021, it means you're using UGUI / Canvas (where it is supported).

    So it doesn't work for you in 2022 it is a bug and I'd recommend you report it as such (in Unity, Help > Report a Bug).
     
    antoine-unity, Nov 7, 2022
    #8
    Halquigo likes this.