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Area light size U V aspect ratio lock

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  • Area light size U V aspect ratio lock

    Something I find I do a lot when Im scaling lighting is dialing in both values. Would it be possible to get a "lock aspect ratio" kind of button? So if its 1 x 1 default itll scale as a square, but if you have made a car softbox shape, and lock it, itll scale accordingly? That'd save me a lot of clicks over the course of a day/
    Website
    https://mangobeard.com/
    Behance
    https://www.behance.net/seandunderdale

  • #2
    Point taken, I'll add a note.
    Alex Yolov
    Product Manager
    V-Ray for Maya, Chaos Player
    www.chaos.com

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    • #3
      As a side question to this -- is using the UV attributes on rect lights still the "correct" way to scale lights? I used to always do this, but it's never very convenient and nowhere that I have ever worked or any tutorial I have ever watched has bothered to do it this way. Furthermore, I've never seen any difference in the result between using the UV attrs and scaling the light, or been made aware of any downsides to doing it that way. So, what's the deal with this and why is it necessary?

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      • #4
        Yes, it's still the recommended method. The issue has always been that scaling can be used, but you need to be careful, as uniform scaling will work correctly, but non-uniform scaling produces skewed or elliptical shapes, which may produce incorrect results.
        Alex Yolov
        Product Manager
        V-Ray for Maya, Chaos Player
        www.chaos.com

        Comment


        • #5
          If uniform scaling works fine, then an aspect ratio lock doesn't really matter. I've just always avoided using the maya transforms, but if there is no difference for uniform scale then I'll just use that from now on.
          Website
          https://mangobeard.com/
          Behance
          https://www.behance.net/seandunderdale

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          • #6
            Originally posted by yolov View Post
            Yes, it's still the recommended method. The issue has always been that scaling can be used, but you need to be careful, as uniform scaling will work correctly, but non-uniform scaling produces skewed or elliptical shapes, which may produce incorrect results.
            Do you mean on disk lights only? On a regular rect light I've routinely used non uniform scaling on the transform directly and never had any problems which is why I was curious for the reason for this being a no-no.

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            • #7
              I got the impression only one value affected the disc light shape and the other was ignored.
              Website
              https://mangobeard.com/
              Behance
              https://www.behance.net/seandunderdale

              Comment


              • #8
                Originally posted by seandunderdale View Post
                I got the impression only one value affected the disc light shape and the other was ignored.
                Correct, we need to fix this in the UI.
                Alex Yolov
                Product Manager
                V-Ray for Maya, Chaos Player
                www.chaos.com

                Comment

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