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Beds - which product handles a person's body impression on the mattress?

doorknob22doorknob22 Posts: 63
in The Commons

Hola!

One of the things which often catches my eye when viewing renders of charchters in a bed is "the marble effect", i.e. the way the matress seems to be made of marble and the body on it leaves no impression where in relaity it would leave some depression. 

Is there any Bed product that you are aware of that allows you to simulate a person's weight on it?

Comments

  • TheKDTheKD Posts: 2,711

    You can try adding a smoothing modifier, and use the figure or a geoshell of the figure as a colision object to get that effect. Deformer also. Or bring it into blender and create a morph. Many ways to do it.

  • nonesuch00nonesuch00 Posts: 18,729

    Just sink the body into the mattress about 1/8 to 1/6 of the body thickness and it will look realistic for a "firm mattress" but for a soft mattress I know of no products that do that.

  • Charlie JudgeCharlie Judge Posts: 13,253

    This product may be of some use in creating an impression:

    https://www.daz3d.com/simtenero-shape-reprojector

  • fastbike1fastbike1 Posts: 4,078

    Add a dforce modifier to the mattress, then pose your character above the mattress at time 0 and on the mattress at your end time.

  • FSMCDesignsFSMCDesigns Posts: 12,844
    TheKD said:

    You can try adding a smoothing modifier, and use the figure or a geoshell of the figure as a colision object to get that effect. Deformer also. Or bring it into blender and create a morph. Many ways to do it.

    This works great

  • HylasHylas Posts: 5,223

    Here's a freebie mattress with morphs: https://www.renderosity.com/mod/freestuff/morphing-mattress/49225

  • shootybearshootybear Posts: 147
    Smoothing modifier! I've not heard of that before! Thanks!
  • Silent WinterSilent Winter Posts: 3,876
    edited December 2019

    This bed has several morphs:

    https://www.daz3d.com/ig-snuggles-prop-set

    and there's a related pose set - I'll link the bundle and you can click it from there if you don't want the outfit too:

    https://www.daz3d.com/ig-snuggles-bundle

     

    Edit: or there's this new one on sale: https://www.daz3d.com/z-luxury-morphing-bed-and-poses

     

    Otherwise - I think dformers / smoothing only works if there's enough geometry in the mesh, but turning on a few levels of sub-d might help with that

    Post edited by Silent Winter on
  • otherunicornotherunicorn Posts: 374
    fastbike1 said:

    Add a dforce modifier to the mattress, then pose your character above the mattress at time 0 and on the mattress at your end time.

    Last time I tried that, the matress ended up very thin and flat.

  • FSMCDesignsFSMCDesigns Posts: 12,844
    otherunicorn said:
    fastbike1 said:

    Add a dforce modifier to the mattress, then pose your character above the mattress at time 0 and on the mattress at your end time.

    Last time I tried that, the matress ended up very thin and flat.

    Works best with a heavy/dense mesh

  • TheKDTheKD Posts: 2,711

    Yeah I had that happen on one bed I tried it on, turned out the whole top was just one huge polygon and not a bunch of little square polygons.

  • otherunicornotherunicorn Posts: 374

    It had lots of polygons - it just squished itself flat, as if it were a blanket. Clearly I wasn't doing something right.

     

  • Silent WinterSilent Winter Posts: 3,876

    ^I think there's a way to simulate internal pressure - there are dforce pillows that use it - but I've no idea how...sorry

  • marblemarble Posts: 7,500
    TheKD said:

    Yeah I had that happen on one bed I tried it on, turned out the whole top was just one huge polygon and not a bunch of little square polygons.

    That's my experience too... no polygons to work with on those I tried. I have no idea if it is possible to increase the mesh density.

  • FSMCDesignsFSMCDesigns Posts: 12,844
    otherunicorn said:

    It had lots of polygons - it just squished itself flat, as if it were a blanket. Clearly I wasn't doing something right.

     

    I guess it depends on the bed and the mesh. here is a test I just did, G8 laying on a semi HD (200) cube with smoothing and collision set at 50. You can see the underside image where the mesh is deformed from the body

    smoothingbed.jpg
    1289 x 836 - 260K
    smoothingbed2.jpg
    1446 x 552 - 69K
  • JamesJABJamesJAB Posts: 1,766
    edited December 2019

    As long as the bed has a decent number of polygons and some material zones to seperate the matress for the frame, you can do some pretty neat dforce effects.
    Here is one that I did a few years back.
    Both the matress and blanket where simulated using dforce.

    Big helper for using dforce on something like a bed or chair:
    In the material zones, set the dynamics strength to 0 on ridgid parts or elements that you don't want distorting.
    For the cushion parts set the dynamics strength to somewhere between 50% - 80%  simulate, clear, adjust settings and simulate again until it looks the way you want.

    Then Freeze the simulation for that object and save before you do anything else.

    Post edited by JamesJAB on
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