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Adding distortion to texture based on position

I want to make a material that represent earth view from space, with moving clouds and an independent rotation.

I have this texture from Nasa https://visibleearth.nasa.gov/view.php?id=57747

Using Panner to rotate the clouds is a nice effect, but not natural enough.

Would be possible to add a "random" rotation or some kind of distortion based on the relative position of the globe? (Clouds close to poles move faster).

This answer seems close, but I lose the rotation from Panner. https://answers.unrealengine.com/questions/496738/is-there-a-way-to-add-distortion-to-a-material-for.html

Product Version: UE 4.19
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asked May 31 '18 at 11:58 PM in Rendering

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Get a texture coord node and multiply it with noise and use that as the UVs for your cloud texture layer. If you use a vector noise node instead you can pan or rotate the noise in 3 dimensions.

Check out this livesteam by Epic. https://www.youtube.com/watch?v=enx6ShyKUL8

PS: Scale the noise .

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answered Jun 01 '18 at 12:57 AM

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avatar image ThadeuMelo Jun 01 '18 at 04:04 AM

This video gave me a few insights. However, I figure out It would be easier to flip the texture and add diferent rotations to different clouds formations.

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