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Problem with blending when using Confiner 2D

Discussion in 'Cinemachine' started by Yuriy_Sevastyanov, Feb 17, 2020.

  1. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    I use an orthographic main camera and Cinemachine with two virtual cameras. I want to change views smoothly by switching between two virtual cameras with a default blend mode. And it works perfectly as expected until I add Confiner with 2D mode. After that, the cameraFrom jumps under the bounding shape on start blending.
    I tried to overcome this problem but I found nothing. It really breaks my game logic.
    Any suggestions?

    2020-02-18 02-48-13.gif
     
    Yuriy_Sevastyanov, Feb 17, 2020
    #1

  2. gaborkb

    gaborkb

    Unity Technologies

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    It's not clear for me what the problem is from the gif. Could you put together a project where I can reproduce it, then I will gladly have a look at it ;)
     
    Last edited: Feb 17, 2020
    gaborkb, Feb 17, 2020
    #2

  3. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    I prepared a sample project. There are two scenes "What I want" and "What it does". The difference is only Confiner 2D (turned on and turned off).
    Just play the scenes and switch cameras by "w" and "s"
     

    Attached Files:

    Yuriy_Sevastyanov, Feb 18, 2020
    #3

  4. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    Hello!
    Do you have any suggestions?
     
    Yuriy_Sevastyanov, Feb 20, 2020
    #4

  5. gaborkb

    gaborkb

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    Sorry for the slow reply @Yuriy_Sevastyanov
    The jump happens due to a regression (same issue as https://forum.unity.com/threads/cin...-hitch-in-the-transition.828669/#post-5498653), and will be fixed in the next release.

    However, in the meantime, you can avoid having this problem by changing the vcam priorities instead of enabling/disabling your vcams.

    For example:
    In your example scene, you have two vcams. View 1, and View 2. Both have priority 10.
    Instead of enable/disable, do the following:
    • When you want to CinemachineBrain to show View 1, then set priority of View 1 to 11, and priority of View 2 to 10.
    • When you want to CinemachineBrain to show View 2, then set priority of View 1 to 10, and priority of View 2 to 11.
    This way you will have the expected behaviour.
     
    Last edited: Feb 24, 2020
    gaborkb, Feb 24, 2020
    #5
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  6. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    Hello, @gaborkb
    I'm glad to hear from you. Thank you for the suggestion. If I'm able to get done the rest parts of my game before the release I will follow for your instruction or rollback Cinemachine version.
    Anyway, thank you for your reply. Now, I know that it is unwanted behavior and will be fixed.
     
    Yuriy_Sevastyanov, Feb 24, 2020
    #6
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  7. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    I rebuilt the project with Cinemachine 2.6.0-preview.2. Unfortunately, the jumps are still there. Maybe I do it in the wrong way? I attached the updated project, so, you can reproduce the problem:
    1. Open CameraTestProject2.6.0-preview.2
    2. Open "What it does" scene
    3. Run
    4. Press Space
     

    Attached Files:

    Yuriy_Sevastyanov, Mar 11, 2020
    #7
    gaborkb likes this.

  8. gaborkb

    gaborkb

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    We had a look at the project. The problem is that you are disabling the confiner bounding shape along with the vcam.
    This causes one our functions to never return true.

    In the meantime, a workaround is to not disable the confining shapes until the associated vcam is no longer live.
     
    Last edited: Mar 11, 2020
    gaborkb, Mar 11, 2020
    #8

  9. Gregoryl

    Gregoryl

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    To explain a little further: in Unity, Colliders that are disabled effectively don't exist, and it is impossible to test them for collisions and intersections, so the confiner stops working. You need to keep the confining shapes enabled until the vcam blend is finished.
     
    Gregoryl, Mar 12, 2020
    #9
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  10. Yuriy_Sevastyanov

    Yuriy_Sevastyanov

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    But if I disable the vcam it still exists for blending, doesn't it?
     
    Yuriy_Sevastyanov, Mar 13, 2020
    #10

  11. Gregoryl

    Gregoryl

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    yes, its life is artificially prolonged for the duration of the blend. Unfortunately this can't be done for the confining shape.
     
    Gregoryl, Mar 13, 2020
    #11
    Yuriy_Sevastyanov likes this.