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Re: Texture mapping a sphere seamlessly

Posted: Wed May 20, 2020 12:38 pm
by aoktar
atoyuser1 wrote:thanks. Is there a way to avoid tiling in displacement ?
using vertex displacement types will help

Re: Texture mapping a sphere seamlessly

Posted: Wed May 20, 2020 2:06 pm
by atoyuser1
aoktar wrote:
atoyuser1 wrote:thanks. Is there a way to avoid tiling in displacement ?
using vertex displacement types will help
thanks again, so I have been reading through the docs http://www.aoktar.com/octane/OCTANE%20H ... ement.html

And after playing around with subdivisions, this is how far I've got:
Vertex1.JPG
changing map type to height helps a little, but there's still that warped mapping problem at the top:
Vertex2.JPG
Should I be looking at the tri-planner?

Re: Texture mapping a sphere seamlessly

Posted: Wed May 20, 2020 8:02 pm
by atoyuser1
In case anyone's wondering, I've found the best solution, for now, is to group a non-octane textured sphere in with a displacement deformer with emulate selected. Then I play around with segments and a subdivision surface to get more detail

Re: Texture mapping a sphere seamlessly

Posted: Thu May 21, 2020 7:57 am
by bepeg4d
Hi atoyuser1,
please have a look at here:
viewtopic.php?f=9&t=74889#p383632

ciao Beppe

Re: Texture mapping a sphere seamlessly

Posted: Thu May 21, 2020 2:10 pm
by atoyuser1
bepeg4d wrote:Hi atoyuser1,
please have a look at here:
viewtopic.php?f=9&t=74889#p383632

ciao Beppe
Thanks Beppe, I read through all that. I converted my sphere type to icosehedron, so all the segments are more evenly distributed.
It gives me a bald patch on one side:
Trying.JPG
Same with rounded cube:
Trying Cube.JPG
I tried switching from object to tangent which sends it all in one direction. Am I missing something obvious?:
Trying Tangent.JPG
On another note: To get higher detail, is it best to use the Subdivision level in displacement, or up the segments on the primitive? I set Subdivision to 8 and C4D froze.

Many thanks

Re: Texture mapping a sphere seamlessly

Posted: Fri May 22, 2020 8:39 am
by bepeg4d
Hi,
if you use a procedural texture in Vector mode, it will follow a vector direction.
If you apply a procedural texture in Height mode, it will follow the normal directions of the object, but you also need to change the Noise space from UV to Texture or Object, to apply it in 3D space:
CF4D7039-FFC1-4F11-A3E7-BCF00ADF66EF.jpeg
About subdivisions, it doesn’t metter if you apply them from Vector Displacement node or from Octane Object tag, but avoid to subdivide the mesh too much.
You can switch to Wireframe view mode, to check the density of the subdivision:
3714E10B-8556-4E16-BF53-CD3DC4089824.jpeg
ciao Beppe

Re: Texture mapping a sphere seamlessly

Posted: Mon May 25, 2020 9:19 pm
by atoyuser1
Sorry for my late reply. Yes, setting it to Height works, thanks!

it takes quote a bit of processor to get a sharp texture using this method, but at least it's seamless

Re: Texture mapping a sphere seamlessly

Posted: Tue May 26, 2020 1:25 pm
by frankmci
atoyuser1 wrote:Sorry for my late reply. Yes, setting it to Height works, thanks!

it takes quote a bit of processor to get a sharp texture using this method, but at least it's seamless
Just in case you're not using it, don't overlook the "auto bump map" option in the displacement node. It can make a HUGE difference.

Re: Texture mapping a sphere seamlessly

Posted: Tue May 26, 2020 7:58 pm
by atoyuser1
frankmci wrote:
atoyuser1 wrote:Sorry for my late reply. Yes, setting it to Height works, thanks!

it takes quote a bit of processor to get a sharp texture using this method, but at least it's seamless
Just in case you're not using it, don't overlook the "auto bump map" option in the displacement node. It can make a HUGE difference.
I did yes, thanks. Even with that, it seems the only way to get detailed results is to up the segments - The grey sphere on the left is a bitmap displacement, the blue one is vertex :
Capture30.JPG
Capture200.JPG

Re: Texture mapping a sphere seamlessly

Posted: Wed May 27, 2020 6:55 am
by atoyuser1
This is odd. Has anyone experienced similar with vertex mapping? I'm assuming it's a memory issue (I only have 16GB)

Might need to click on the attachment to see it animate
spintest_w1280_600px_0loops_12fps_normal_256cols.gif