# Matchbox request: offsets with strength

**URL:** <https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722>\
**Category:** Matchbox\
**Created:** [February 14, 2023, 8:52pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722 "2023-02-14T20:52:02Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![GPM](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/gpm/32/4224_2.png) [@GPM](https://forum.logik.tv/u/GPM)\
**Post date:** [February 14, 2023, 8:52pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/1 "2023-02-14T20:52:02Z")

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Hello,

There is a front/matte offset MX which is very handy. I’m curious if there could be an offset MX that is driven by a strength alpha/gmask input?

So if the offset is say -100 on X and scale of 200, the pixels in white make the full transform, black no transform, and gray in between the values. All the axis parameters like shear, rotate, etc. would be applicable as well

Kind of like displacement I guess, but more precise and mathematical.

Would anyone be interested in exploring this?

@Graziella?  
@lewis?

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**Author:** ![Ryland](https://avatars.discourse-cdn.com/v4/letter/r/ba8739/32.png) [@Ryland](https://forum.logik.tv/u/Ryland)\
**Post date:** [February 14, 2023, 9:16pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/2 "2023-02-14T21:16:10Z")

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Not sure if this is doing exactly what you want, but I think you can more or less achieve what you’re looking for with UVs. If you take a UV into action, front/matte offset, then pull out an action gmask to drive the strength, and apply the UV to your image downstream it should apply the offset with strength being driven by the softness of the gmask.

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**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\
**Post date:** [February 14, 2023, 9:16pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/3 "2023-02-14T21:16:36Z")

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Hey @GPM, if I understand you correctly, you can do that with native nodes using UV maps pretty easy. Here’s a quick setup…

> **[betterOffset.zip](https://www.dropbox.com/s/s0k0mn17hfwjyj2/betterOffset.zip?dl=0)**
>
> Shared with Dropbox

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<div class="post-metadata">

**Author:** ![GPM](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/gpm/32/4224_2.png) [@GPM](https://forum.logik.tv/u/GPM)\
**Post date:** [February 14, 2023, 10:01pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/4 "2023-02-14T22:01:06Z")

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Thanks, gents. Would be handy to have the functionality in a single action MX, too.

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**Author:** ![andy\_dill](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/andy_dill/32/47_2.png) [@andy\_dill](https://forum.logik.tv/u/andy_dill)\
**Post date:** [February 14, 2023, 10:49pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/5 "2023-02-14T22:49:38Z")

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y\_iXform does exactly this.

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**Author:** ![GPM](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/gpm/32/4224_2.png) [@GPM](https://forum.logik.tv/u/GPM)\
**Post date:** [February 14, 2023, 11:53pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/6 "2023-02-14T23:53:44Z")

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Thank you!

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**Author:** ![cnoellert](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/cnoellert/32/559_2.png) [@cnoellert](https://forum.logik.tv/u/cnoellert)\
**Post date:** [February 15, 2023, 12:19am UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/7 "2023-02-15T00:19:34Z")

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I just wrote my first matchbox shader doing this when low and behold… 😂

 ![Screen Shot 2023-02-14 at 4.45.21 PM](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/0/000762942b0c63727276a49dc6488fa29e2e4821.jpeg)

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**Author:** ![ytf](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/ytf/32/109_2.png) [@ytf](https://forum.logik.tv/u/ytf)\
**Post date:** [February 15, 2023, 9:46pm UTC](https://forum.logik.tv/t/matchbox-request-offsets-with-strength/7722/8 "2023-02-15T21:46:56Z")

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I see characters from _“The Lion King”_ in there.
