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Terragen Discussion / Verticall Face Distortion
« Last post by WASasquatch on Today at 07:06:34 PM »
Is it possible to smooth vertical face noise? All the streaky lines, while maintaining it's slope?

In some instances it can actually add detail to your scene by showing through your lateral displacement, but in others I just don't like it.
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Terragen Discussion / Re: Refractive Index Database
« Last post by WASasquatch on Today at 06:46:50 PM »
Looks pretty usefull :)

Indeed. They even have a specific 3D section with "fine tuned" indexes for work with 3D programs, where I guess real world values may not be the best translation.

For example, here is the 3D version of gold with a index of n = 0.65663 https://refractiveindex.info/?shelf=3d&book=metals&page=gold
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Terragen Discussion / Re: Refractive Index Database
« Last post by archonforest on Today at 06:36:21 PM »
Looks pretty usefull :)
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Terragen Discussion / Re: Grayscale terrain export
« Last post by digitalguru on Today at 06:27:42 PM »
You can just plug a heightfield generate into your tree where you want to sample the heightmap, set number of points (pixels in the image) and the size of terrain to be sampled.

Hit Generate Now then right click on the node as Save as.. to Open Exr.

You've now got a map that can be used for displacement in most 3d apps.

If you load it into Photoshop it will invariably be completely white (unless you've rendered a flat terrain at sea level!) as all values will be over 1.

If you then convert to 8 bit it will normalize the image squeezing the low and high values into 0-1 range (or in Photoshop 8 bitness 0-255) and you'll see the contours of your terrain.

I'm not a Photoshop expert, but it looks like if you choose Equalise Histogram when you convert to an 8-bit image it will normalize the 32-bit image correctly.



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Terragen Discussion / Refractive Index Database
« Last post by WASasquatch on Today at 06:26:58 PM »
Here is a lovely website which will help you track down specific refractive index's of materials or elements.

https://refractiveindex.info/
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File Sharing / Re: Materials
« Last post by WASasquatch on Today at 06:25:30 PM »

Not a material but this place looked more relevant for post this.

I wanted to see how the "Index of refraction" looks with negative values.
Over -1 it looks problematic (black). If you go lower (-1.00001 looks like the lowest) you get kind of this effect.
I animated that from -10 to -1.00001 in the two GIF's.

Pretty cool looking. Almost like energy. There is a website that lists specific index's of materials too. Very helpful in TG. Probably should post it for reference in discussion.
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Open Discussion / Re: hard shadows
« Last post by Kadri on Today at 03:07:36 PM »
...
Hair is ZB fibremesh. I bit too thick, but I'm trying to get the hang of it....

I like it.
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Open Discussion / Re: hard shadows
« Last post by Dune on Today at 03:02:59 PM »
Strange that your render looks ok. It's this part. I don't know the sun angle from my head.
And yes, there's 0.002 displacement on this. And then it really hits.

Hair is ZB fibremesh. I bit too thick, but I'm trying to get the hang of it. Learning every day. Clothes still need refinement too.
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Nice. Close up looks cool.
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Terragen Discussion / Re: Grayscale terrain export
« Last post by Dune on Today at 02:58:45 PM »
Turn of all lights and make the grayscale gradient in luminosity.
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