Displacement Problem

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hoyter
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Displacement Problem

Post by hoyter » Mon Apr 25, 2016 1:37 pm

Hi all,
Thanks for taking the time to read this.
I'm relatively new to Indigo and 3D visualization. I use Sketch up and Skindigo accordingly so this might be a simple question to answer.
How do I fix displacement from breaking two planes that are connected at 90 degree angles? See attached image. The amount of displacement separates the two planes of the firepit at the corner. I would like for them to remain attached from obvious reasons.
Is there something in the mesh settings or displacement settings that I am not doing correctly? \
Apologies if I posted this to the wrong place, a mod can feel free to drag this to the sketchup forum!

Thanks!
Hoyter
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Zom-B
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Re: Displacement Problem

Post by Zom-B » Mon Apr 25, 2016 5:56 pm

Hey hoyter,

if you use displacement then not only push the texture out by having a B value, but also let it be displaced into the mesh by having the c value @ half of B negative.

example:

if B value is 0.01 for 1cm, then set C to -0.005 for -5mm

Also check this tutorial: https://www.youtube.com/watch?v=GCbMX2Udw7Y

There are more video Tuts here:
https://www.youtube.com/playlist?list=P ... A2CD263FE1
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CTZn
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Re: Displacement Problem

Post by CTZn » Mon Apr 25, 2016 9:52 pm

Hi, it seems to me that your geometries may have stranded faces that should be deleted, ie the mesh be cleaned. Or, you didn't remove the planes that served to build the volumes smh idk. Redo volumes in case of doubt.

Stitching angles depends of the 'smoothing' value attached to them, they will remain sewed if set to 'smooth'. Seems to me your issue is more about rogue geometry than the last indication, because behind stranded planes we can see stitched geometry alright.
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Oscar J
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Re: Displacement Problem

Post by Oscar J » Mon Apr 25, 2016 10:15 pm

Didn't Indigo have a connect corners feature specifically for these situations?

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CTZn
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Re: Displacement Problem

Post by CTZn » Mon Apr 25, 2016 10:27 pm

Indigo will stitch edges marked as smooth during displacement, that's the one way I know of. I named the option 'stitch edges' in melti (former mti rebranded, say). What it does (the melti way) is set all edges to smooth before saving the obj file, then reverts mesh to prior state.
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hoyter
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Re: Displacement Problem

Post by hoyter » Tue May 03, 2016 11:32 am

Zom-b was right on the money on how to fix it. Thanks for the help gents. Much appreciated.

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Zom-B
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Re: Displacement Problem

Post by Zom-B » Tue May 03, 2016 6:11 pm

good to hear that I could help :)

Regarding Displacement I also have a Tip here for you:

As you can see in the above example your displacement is super "spiky" and actually not very real looking.
For the displacement Map try to denoise and blur it a little! You loose the fine details, but the displacement will me better and having a detailed BumpMap or NormalMap texture you gain your details back for the mesh, also without the need of to much Subdivision on the mesh ;)
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CTZn
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Re: Displacement Problem

Post by CTZn » Tue May 03, 2016 11:06 pm

alright, fair enough :)
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