Forum: Poser - OFFICIAL


Subject: Doing Body Physics with the morph tool

basicwiz opened this issue on May 03, 2014 · 32 posts


basicwiz posted Sat, 03 May 2014 at 10:54 AM

As in, I've figured out how to do it. (Probably the last one here to do so, but am sharing just in case.)

When two figures touch, there SHOULD be some "give" in the skin surface of the figure being touched. Arms, legs, chests all have a fat-covered surface that should "give" against fingers.

My method is to pose the two figures with the fingers of the gripping figure actually penetrating the skin of the yeilding figure. Next, I use the morph brush to push the yeilding figure's skin back from the fingers. Next, I use the tighten tool (selecting the yeliding figure as the cloth and the fingers as the target) to get the skin to curve around the fingers. (You want the Pokethru Margin set to 0 for this step) Last, I use the smoothing tool to make it all look natural.

There's probably an easier way, but I know now my couples and fight scenes look a lot more realistic!

I'll be happy to create a mini-tut with screen captures if there is any interest. Also, if anyone can tell me an easier way, I'll take that with sprinkles on top!


ThunderStone posted Sat, 03 May 2014 at 11:28 AM

Quote - I'll be happy to create a mini-tut with screen captures if there is any interest. Also, if anyone can tell me an easier way, I'll take that with sprinkles on top!

 

There's an interest over here (waving madly)... I would like to be able to start using some of the advance features in PP 2014...  Thanks in advance.


===========================================================

OS: Windows 11 64-bit
Poser: Poser 11.3 ...... Units: inches or meters depends on mood
Bryce: Bryce Pro 7.1.074
Image Editing: Corel Paintshop Pro
Renderer: Superfly, Firefly

9/11/2001: Never forget...

Smiles are contagious... Pass it on!

Today is the tomorrow you worried about yesterday

 


hborre posted Sat, 03 May 2014 at 5:30 PM

Ditto.  A mini-tute would be excellent.


basicwiz posted Sat, 03 May 2014 at 6:21 PM

I'll get to the renders sometime in the next 24 hours!


basicwiz posted Sat, 03 May 2014 at 7:01 PM

How to simulate soft body colissions using the morph tool.

Here is a scene I threw together. Vicky has decided to leave Mike and he has grabbed her arm. I have posed this scene as one would without the ability to deform the skin surfaces.


basicwiz posted Sat, 03 May 2014 at 7:01 PM

Here is a closeup of his hand on her arm. You can see that he does not actually have hold of her.

basicwiz posted Sat, 03 May 2014 at 7:02 PM

Now I have changed the pose so that his fingers actually penetrate her mesh. Looks REALLY fake.

basicwiz posted Sat, 03 May 2014 at 7:04 PM

Now comes the magic. Take the morph brush and push in on the skin of V's arm around where M4's fingers are. Note the settings on the morph brush.

basicwiz posted Sat, 03 May 2014 at 7:04 PM

Now switch to the tighten tool. Select M4 as the target and V4's arm as the item to tighten. Again, note the morph settings.

basicwiz posted Sat, 03 May 2014 at 7:06 PM

The skin rises until it collides with the fingers.

basicwiz posted Sat, 03 May 2014 at 7:07 PM

Lastly, switch to the smoothing brush and get rid of any pulled or deformed places around the collission points.

basicwiz posted Sat, 03 May 2014 at 7:07 PM

And here we are: Mike actually has grabbed Vicky by the arm!

basicwiz posted Sat, 03 May 2014 at 7:09 PM

Hope this is of some use to folks. Without telling you anything too suggestive, let me assure you it works on all body parts, as well as props that you might need to deform, such as pillows, beds and sofas.

Hope it helps!


moriador posted Sat, 03 May 2014 at 7:25 PM

Awesome! You make it look so easy. :D (I just realized a couple of days ago that P10 has the nifty new morph brush, so even if I can't render a lot of content heavy scenes in it, I can take advantage of this). Thanks for posting it. 


PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.


ThunderStone posted Sat, 03 May 2014 at 8:58 PM

Thanks! Now I'll get some better mileage out of the morph brush.


===========================================================

OS: Windows 11 64-bit
Poser: Poser 11.3 ...... Units: inches or meters depends on mood
Bryce: Bryce Pro 7.1.074
Image Editing: Corel Paintshop Pro
Renderer: Superfly, Firefly

9/11/2001: Never forget...

Smiles are contagious... Pass it on!

Today is the tomorrow you worried about yesterday

 


DustRider posted Sun, 04 May 2014 at 12:39 PM

I agree with Moriador, you make it look so easy. It's something I've thought about quite often, but never tied. Your approach is much better than mine would have been. Thanks for the tut!

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vilters posted Sun, 04 May 2014 at 2:03 PM

Nicely done Doug. Good Job.

 

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!


aldebaran40 posted Sun, 04 May 2014 at 3:25 PM

thank you  for the tuto basicwiz , very usefull


Coleman posted Sun, 04 May 2014 at 8:19 PM

Great technique! Thanks for showing how you did it.


basicwiz posted Mon, 05 May 2014 at 8:39 AM

Thanks for the thanks! :) Always fun when you can share!


ErickL88 posted Mon, 05 May 2014 at 12:21 PM

Great job!

Sorry if I overlooek it, but was this done with the updated morph brush tool of P10/PP2014?

What do the "Attraction Points" and "Pokethough Margin" options/settings do in the new morph brush, please?



basicwiz posted Mon, 05 May 2014 at 12:30 PM

Quote - Sorry if I overlooek it, but was this done with the updated morph brush tool of P10/PP2014?

Yes.

Quote - What do the "Attraction Points" and "Pokethough Margin" options/settings do in the new morph brush, please?

Attraction points is how far out from the target geometry the morph will consider when tightening.

Pokethru Margin is how tight the selected figure will be pressed to the target morph. For clothing the usual setting is .002. This is usually sufficient to prevent pokethru. If you don't change it to 0 when doing this sort of thing, there will be a gap between the two items that are supposed to be in contact.

Sorry not to be complete. :)


ErickL88 posted Mon, 05 May 2014 at 12:38 PM

Questions answered :D

Thank you, basicwiz.



EClark1894 posted Mon, 05 May 2014 at 2:23 PM

There is just one thing, 'wiz. True skin gives, but it doesn't just sink in. It spreads out. For a good visual, th8ink of skin as a balloon filled with water. Skin won't mold around your fingers, it spreads out under them. The girl's skin, the area between the guy's Thumb and fingers, should be bulging upward, as if being pinched slightly.




moriador posted Mon, 05 May 2014 at 3:40 PM

Quote - There is just one thing, 'wiz. True skin gives, but it doesn't just sink in. It spreads out. For a good visual, th8ink of skin as a balloon filled with water. Skin won't mold around your fingers, it spreads out under them. The girl's skin, the area between the guy's Thumb and fingers, should be bulging upward, as if being pinched slightly.

You're right.

I just tested on my own forearm. If my grasp is pushing against my forearm, the flesh pinches between my fingertips and thumb. This is how it would look if you grabbed someone and held onto them.

But if my grasp is pulling away from my forearm, as it would if I were tugging my arm, the skin tightens between the fingertip and thumb, pretty much as depicted in the tut.

Edit: So if the guy were pulling down (fairly hard -- toward her) on her arm in the pics, skin would tighten between his fingers and thumb. However, if he's pulling upward or horizontally toward himself -- it would look exactly as you describe.


PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.


basicwiz posted Mon, 05 May 2014 at 11:38 PM

Better solution?


vilters posted Mon, 05 May 2014 at 11:52 PM

@ Basicwiz
You have a very good tip here.

And as long as there is no "maintain internal volume button"? LOL.

One could try this:
First put a magnet over the "zone" to slightly increase the volume of the affected actor.
Then apply your morph brush tip to squeeze the hand onto the actor.

Happy Posering all, Tony

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!


moriador posted Tue, 06 May 2014 at 12:43 PM

Quote - Better solution?

I think your method is perfectly sound, and I appreciate you sharing it.

Depending on which way the weight is pulling on the flesh, it may or may not need additional morphing. I'd think a few tiny light strokes with the morph brush would change it sufficiently to please EClark and his extremely observant eye.

Vilters solution also seems like a reasonable way to go.


Edit: I suppose you could use your method to create a small "muffin top" type of morph to give the impression of tight clothing. It's infnitely useful.


PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.


EClark1894 posted Tue, 06 May 2014 at 1:33 PM

Sorry,  I had to work a double shift yesterday, and I didn't get home until around 10:30. By the time I got home I was already half asleep.

But let me clear something up. There's nothing wrong with Basicwiz's method. it works perfectly fine. I was just trying to point out a subtle difference between the way something like skin reacts to being grasped and the way something more like rubber, clay, or foam does. Water doesn't compress like the others, and our bodies are mostly water. So when you push down on water, it will simply move out of the way, meaning a bulge will form somewhere else. So when someone grasps an arm like basicwiz shows, don't forget to add a slight bulge for the displacement it will cause. To see what I'm talking about simply pinch yourself on the arm.  Now to add the bulge between where the two fingers are pinching, I would probably use the "loosen" brush on that area of skin.

Hope that helps clear things up.




vilters posted Tue, 06 May 2014 at 1:54 PM

As I said, first put a magnet on the arm to "increase" its volume.
Then use Basicwiz technique to make the hand grab the arm.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!


shedofjoy posted Tue, 06 May 2014 at 7:18 PM

excellent idea,and one i shall use, thankyou for sharing this method

Getting old and still making "art" without soiling myself, now that's success.


mr_phoenyxx posted Wed, 07 May 2014 at 2:01 PM

Great stuff. I have tried this before with unsatisfactory results, but I didn't tighten the skin to the hand afterwards. So that is an extra step that I was missing.

One additional question though - when you are pushing the skin of the arm in, how are you doing it without affecting Michael's hand? One of the problems I've had in a situation such as you have depicted is that I will select Victoria's arm, but when I start painting with the morph brush, with Michael's hand in position, then it morphs Michael's hand instead of Victoria's arm.

Also, a suggestion for everyone. If you compress her arm too much, or too far out from Michael's hand, then you can use the "Restore" brush to undo what you have morphed. Instead of trying to use the other brushes to manually recreate what the arm should look like. The restore brush will simply undo any changes you've made with the other brushes.