# Image Sampler works as pattern, how to spread the image over 1 surface?

**URL:** <https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485>\
**Category:** Grasshopper\
**Tags:** windows, rhino-8\
**Created:** [June 27, 2025, 11:44am UTC](https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485 "2025-06-27T11:44:45Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![StuStu2](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/stustu2/32/650054_2.png) [@StuStu2](https://discourse.mcneel.com/u/StuStu2)\
**Post date:** [June 27, 2025, 11:44am UTC](https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485/1 "2025-06-27T11:44:45Z")

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Hello everyone,

For an architecture project I am making a script for rotating bricks according to de brightness of a certain image. I made the script in a way that the input is a surface of random dimensions, from which a new surface with correct dimensions is created to fit the standard dimensions of the brick.

I’m satisfied with the angle translation I got out of the image sampler/remap functions. But i’m doing something wrong with the domain of the image sampler. What I would like to achieve is that the image is spread out 1 on 1 on the surface, instead, it repeats the image multiple times, if I make the surface larger, the image doesn’t scale with it. How can I achieve that the image is just used once?

I made a sketch:

 ![afbeelding](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/1/1/7/117688402d8efbba9d130d5504b64581c614d400.jpeg)

[250627 - GH McNeelforum.gh](https://discourse.mcneel.com/uploads/short-url/cJWzHaW9u55f9DuXD1zhJoBnOIA.gh) (180.7 KB)

 ![test](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/e/8/e/e8ec40d1dac2b941e9ff6ba049cf7ab4552da89d.png)

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**Author:** ![arqmorelos1](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/arqmorelos1/32/670174_2.png) [@arqmorelos1](https://discourse.mcneel.com/u/arqmorelos1)\
**Post date:** [June 27, 2025, 11:54am UTC](https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485/2 "2025-06-27T11:54:26Z")

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[250627 - GH McNeelforum\_1.gh](https://discourse.mcneel.com/uploads/short-url/5dZZ9f9M60c2FnxqSofIpkFvEnQ.gh) (187.6 KB)

 ![reparametrize](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/d/3/d/d3d56956f151ba00f991074ab766d1d50043bfec.png)  
By default the image sampler has a U and V domain from 0 to 1, so you have to reparametrize your surface for it to match the u and v on the image sampler

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<div class="post-metadata">

**Author:** ![StuStu2](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/stustu2/32/650054_2.png) [@StuStu2](https://discourse.mcneel.com/u/StuStu2)\
**Post date:** [June 27, 2025, 12:12pm UTC](https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485/3 "2025-06-27T12:12:42Z")

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You are completely right. I knew it had to be something simple. Thank you very much. Another question, do you know why the image is mirrored in my output?

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<div class="post-metadata">

**Author:** ![arqmorelos1](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/arqmorelos1/32/670174_2.png) [@arqmorelos1](https://discourse.mcneel.com/u/arqmorelos1)\
**Post date:** [June 27, 2025, 12:19pm UTC](https://discourse.mcneel.com/t/image-sampler-works-as-pattern-how-to-spread-the-image-over-1-surface/206485/4 "2025-06-27T12:19:49Z")

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U and V also have a direction, so maybe try flipping the surface