Need advice to simulate detail of cushion
Hi
I need advice to simulate detail of cushion as below:
Thank
Travis
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Hi Travis,
For a quick visual. you can try changing the folding angle on the stitch. It looks OK from a distance although you are losing a bit of detail around the corners where in real life the seam would add a bit of thickness and stiffness.Adam
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Hi falmouth
Thank for your try. It look good. Could you please share the file, I could learn more about how you Fold fabric.
Thank
Travis
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Sure, I’ll upload it when I get back to work tomorrow.
Adam
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Hi Adam
I can simulated. However it's too bulging in front and back.
What should I do? thank
Travis
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Those folds at the top are looking decent.
You could apply strengthen to the material.
You could try out the padding solution (not really tried that with a square cushion but worth a go).
You could import a 3d model you have made in another program and use that as an avatar or you could try building another stiffer cushion in Clo to go inside this one, freezing that and simulate a bigger one over the top.
What’s the output Travis? If this was for a 3D model, what I’d do personally is export it as it is and then do some deformation in a 3D program (use a lattice deform or sculpt it). It might be quicker than trying to build it all in Clo.
Hope that’s useful,
Adam0 -
There’s also some a seam and a zip at the back of the cushion on your reference photo which would be easy enough to do in Clo and would stiffen that side up a bit too.
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I strengthened it and bonded it which seemed to work OK. Also tweaked the shape a bit to match the proportions better. Might need to check the size though.
Adam
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The last post I made is not showing properly so let’s see if this one works;
I strengthened it and bonded it which seemed to work OK. Also tweaked the shape a bit to match the proportions better. Might need to check the size though.
Adam
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You may add in planar wind to the CLO3D scene and model to help flatten out the cushion when using inflate. That can crush down the cushion peaks from using the inflate setting. See > wind > planar.
Also on the fabric texture you can use a stochastic weave repeat that has random highlights (specular) rather than a homogeneous normal texture, that will also help with the naturalness to the fabric giving it that natural 'rough' linen or silk look.
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Hi Travis,
I posted a download link in this thread before the weekend and it never showed up (I can see the post myself if I log in which is weird - added a screenshots to show).
Anyway, if you want the file, send an email to Adam.allenfoord at falmouth dot ac dot uk and I’ll send you the link. Basically bonding and strengthening did the trick for me although I like Ottoline’s idea of using planar wind.
Adam
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Aside from using planar force (wind) I often collide another prop (avatar) into the cloth object, for example fluffing up or pinching pillows is about how the human interacts with them building the photographic set. I did this when IKEA head of VFX came to me about my fabric texture process for furnishings, illustrating some of my technical tricks & tips to tricks the mind and eye on the digital simulation. It's not always as simple a scene as it might 1st appear in the final production shot.
So one good tip is: > use a set of prop object(s) to collide into the set of soft goods. I have a small range of these that work with a xyz (0,0,0,) insertion point and with animated flows to help push a final cushion. And keep these for all manner of situations.
So also 'contemplate' ~ additional prop collision it can be your best friend to create that 'lived' in look.
Planar or spherical wind force to create that 'lived' in effect 'post simulation' asymmetric camera close-up look. It's often what you don't see that's the real sauce in the digital setup.
If you want to simulate that fabric (natural raw silk) weave texture well in vray you will also need to use a > stereo normal texture < as opposed to a bump normal. The difference will be in how the light data in the image reacts - particularly on the specular/roughness map, which will carry 8X times more complex light data than a simple homogeneous lit bump normal map. So to create 'softness' for that raw silk / linen you will need to use a really precise normal and specular/roughness map texture.
Changing the fabric > Material > Type changes the vray shader setup, so you need to select the correct base shader for your fabric and texture maps. However what is not often talked about is how the fabrics light data can perform if you include a high quality normal and specular/roughness. It can really make some difference in the final render as you are effectively pushing up to 8X more light angles from the texture surface at scale - which can make all the difference in the render surface effect for 'soft' natural , raw fabrics like linen and raw silk, where anistropic yarn behavior comes into play.
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