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How do you rotate Image mapped textures on a Planet.
How do you rotate Image mapped textures on a Planet.
Started by eapilot, June 18, 2018, 05:46:55 PM
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eapilot
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Posts: 97
Location: Los Angeles
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How do you rotate Image mapped textures on a Planet.
June 18, 2018, 05:46:55 PM
I am struggling to rotate a Image Map Shader on a planet. I want to have the ability to rotate the image map on the planet to get the desired composition with a cloud mask and planet texture. I can get the image to map correctly but I cannot rotate it or adjust the position. Matt had an old thread of using the Geog Map Shader but I couldn't adjust it either. Any help would be great. Attached is the .tgd file and the texture that I used to map the clouds.
I plan on using existing masks and textures of earth (clouds, terrain, height.)
Link to thread about using geog image map shader
https://planetside.co.uk/forums/index.php/topic,19752.msg194812.html#msg194812
Any help would be great!
Thanks.
[attachimg=1]
Dune
Fluent in Terragen
Posts: 19,850
Location: Netherlands
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Re: How do you rotate Image mapped textures on a Planet.
#1
June 19, 2018, 12:51:29 AM
A simple transform shader (rotate) would do the trick as far as I can tell. Moving it could give problems with the spherical projection though, as you may then move the file 'off the center of the planet' necessary for spherical projection.
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Oshyan
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Posts: 13,674
Holy snagging ducks!
Location: Outland, CA, USA
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Re: How do you rotate Image mapped textures on a Planet.
#2
June 19, 2018, 07:39:03 PM
You should be able to just use a Transform Input shader, as Dune shows. I don't think rotation should mess up the center point positioning on its own.
- Oshyan
eapilot
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Location: Los Angeles
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Re: How do you rotate Image mapped textures on a Planet.
#3
June 19, 2018, 07:41:34 PM
Ok,thanks! I will try that. I had the impression that I couldn't do this based on old forum posts relating to this subject.
Oshyan
Former Staff
Posts: 13,674
Holy snagging ducks!
Location: Outland, CA, USA
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Re: How do you rotate Image mapped textures on a Planet.
#4
June 19, 2018, 08:07:22 PM
You can't do it with heightfields, unfortunately, but you can with image map shaders.
- Oshyan
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How do you rotate Image mapped textures on a Planet.
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