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what is position as uv1 (please Video Learning Or Image)

Discussion in 'UGUI & TextMesh Pro' started by MyUnitydream, Sep 8, 2015.

  1. MyUnitydream

    MyUnitydream

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    Hi To All.

    My Question Is:

    what is position as uv1?

    this component is in component>UI>Effect>Position As UV1

    By Thanks
    Myunitydream
     
    MyUnitydream, Sep 8, 2015
    #1

  2. MyUnitydream

    MyUnitydream

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    only one answer please...
     
    MyUnitydream, Sep 8, 2015
    #2

  3. MyUnitydream

    MyUnitydream

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    hi....
    hi....
     
    MyUnitydream, Sep 16, 2015
    #3

  4. Tim-C

    Tim-C

    Unity Technologies

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    It passes the canvas position through to the first UV channel. This can be used for things like refraction or UV offset sampling in a custom shader.
     
    Tim-C, Sep 17, 2015
    #4

  5. MyUnitydream

    MyUnitydream

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    Please give me an answer with image or video.

    I am not understanding

    What is UV Channel?

    By Thanks
     
    MyUnitydream, Oct 8, 2015
    #5

  6. phil-Unity

    phil-Unity

    Unity UI Lead Developer

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    Google UV channel, its a graphics thing. You could also download the UI example project from the asset store and look as some of the example scenes as some use the UV channel
     
    phil-Unity, Oct 8, 2015
    #6

  7. ceebeee

    ceebeee

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    Hopefully some day someone gives a real answer, because these answers are terrible. Please give *an example* and not technical jargon.
     
    ceebeee, Aug 20, 2017
    #7
    edmund_aloetius likes this.

  8. baohmab

    baohmab

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    Hi
    I hope exactly any things for this question.
    Thanks.
     
    baohmab, Mar 30, 2018
    #8

  9. AcidArrow

    AcidArrow

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    What is the question? What are UVs?
     
    AcidArrow, Mar 30, 2018
    #9

  10. baohmab

    baohmab

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    I can't understand about the component.
    What's this component [Position as UV1] ?
    https://docs.unity3d.com/Manual/script-PositionAsUV1.html

    "
    Position as UV1

    This adds a simple Position as UV1 effect to text and image graphics.
    "

    What 's "simple Position", How can I use this component?
    Thanks.
     

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    baohmab, Mar 30, 2018
    #10

  11. AcidArrow

    AcidArrow

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    AcidArrow, Mar 30, 2018
    #11

  12. baohmab

    baohmab

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    I feel it to be the component what don't be usually use without custom component.
    Thanks for your help.
     
    baohmab, Mar 30, 2018
    #12

  13. ceebeee

    ceebeee

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    Ok, god. Only now with seeing the code does it make any sense whatsoever.

    It saves the vertex Position in Worldspace as the UV data! So as an element moves, the UV data would shift.

    Why couldn't someone just say that.
     
    ceebeee, Mar 31, 2018
    #13
    edmund_aloetius, SlimeProphet, 5argon and 5 others like this.

  14. ewanmellor

    ewanmellor

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    Further to ceebeee's answer, I presume that since it is taking input from UIVertex instances, that it is actually the position in screen space, not world space.
     
    ewanmellor, Jun 26, 2019
    #14
    AlejMC and ceebeee like this.

  15. SAP

    SAP

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    Maybe this part of this book is useful:

    https://www.oreilly.com/library/vie...20/4755b80b-f032-4759-874c-3b60b8bf6822.xhtml

    They have said just these lines:

    From The Book: "The Position as UV1 component allows you to change the UV channel that the canvas renders on. This is used if you want to create custom shaders that utilized baked light maps."
    Sadly, custom shaders are a pretty heavy topic and go past the scope of this text."
     
    SAP, Nov 22, 2020
    #15

  16. AlejMC

    AlejMC

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    Just bumped into this as I might have a use for it but can't find the difference between just using the Vertex Position and the copy of Position sent to UV1.
    At least on Overlay Canvases that is.
     
    AlejMC, Mar 23, 2023
    #16