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Texture problem
I had to use the relax UV option on this texture but when I did, it created this strange seam with the pits becoming really small as the texture wraps around and meets itself. How do I fix this? If I turn off relax UV, they are big at the base of the dome and tiny at the top. Any insight?
https://www.dropbox.com/s/jcwab5hij3ambxa/CropperCapture%5B41%5D.png?dl=0
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13 Replies
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are you using an image texture (not procedural noises)? Can you post the image file?
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Thanks Brian, yes, it is an image. I’ve been playing with a whole bunch of settings and I have made a little progress but there are bizarre distortions and misalignments. Here is the texture:
https://www.dropbox.com/s/dit066lf7jhbm0f/shutterstock_1423634645-%5BConverted%5D.png?dl=0
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using a Polar to Rectangular filter (in PS or some such) on the image gives pretty good results with just UVW mapping – not perfect but better.
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I really appreciate your help, but I don’t even know where to begin with that.
This is a “seamless” texture and it makes no sense to me at all why this shouldn’t be a very simple task in Cinema. Baffling.
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If you use Brian’s version of the texture, mapped with spherical mapping on a hemisphere, you get the result on the right, with the original texture you get the result to the left. Note 2 tiles along the V coordinate. Works the same with the original UV mapping of the procedural hemisphere.
Kalleheikki Kannisto
Senior Graphic Designer -
I will try this, thank you!
I’m still confused though, why is this not achievable with the base texture?
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Okay, this worked but the pits are huge. In spherical mapping, how do I reduce the size of all of the pits to the right proportions?
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Wrapping a square around a sphere, something’s gonna get stretched, something squished. With spherical mapping the top edge of the map squeezes into a point, while the bottom (or middle) stretches to double around the equator.
Polar-to-rectangular gives you a reasonably good reverse distortion to counter-act this — for one hemisphere, that is.
If you need a smaller texture, you need to shrink and tile the texture first (to 1/2, 1/3, 1/4… so as to retain seamlessness) before applying the polar-to-rectangular distortion. You can’t adjust the size after the distortion.Kalleheikki Kannisto
Senior Graphic Designer -
(Please see previous answer)
Kalleheikki Kannisto
Senior Graphic Designer -
Any of you guys on Upwork or Guru? I will pay someone to get these domes right for me. I have tried scaling things and I end up with strange distortions still.
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