The next step is to find a solution to bridge the gaps that arise between the moving parts of the objects at the pivot points.
I think of flexible triangular or square surfaces, which I can clamp between the boundary lines of the moving parts. For this I have to immerse deeper into the Ruby programming of SketchUp geometry ...
If someone from the experts has ideas, I would be very happy.

Here is an attempt to simulate flexible joints in MSPysics.
This are not flexible surfaces.
The right one is a kind of simple ball joint. The left one is realized by a series of sub objects which are transformed into the respective position.
The deception is only successful under certain ideal conditions, such as adherence to a given frequency, low influence of centrifugal forces, shocks or vibrations.
It would of course be better to have a flexible surface that adapts to the parts to be joined according to given conditions (e. g. straight or curved).
Here my programming attempts to influence the surfaces of a group or a component during a physics simulation fail. Purely manipulated lines or surfaces are not saved during a simulation and are not recognized by "Replay".
At present, only this replacement solution for flexible objects remains to have a renderable simulation in MSPhysics.

I love it - a nice combination of photorealistic rendering and NPR-look. There are a few little fire flies in the shot.

Looks like a frame from a MSPhysics explosion in a not so far future (2019) with a nice SketchUp rendering.

For Sketchy Physics there are some models in 3D-Warehouse with approaches to AI.

Thanks for the positive information.

Hello Anton,
are there already news from the "ClothWorks" development?

Hello Anton,
What is to do to get faces (not in a Group), scripted during MSPhysics simulation, handled in MSPhysics Replay?
They are displayed during the simulation and disappear in replay and also in the animation export.
Thank you in advance.

Hi Anton,
I want to bring more variation into the particles of the orca's breathing air. My intended scaling function does not show any reaction. What can be the cause? Can't scripted emitted objects not be scaled during simulation?

for i in 1..20 do
  tra = this.group.transformation
  dir_zsf = tra.zaxis
  dir_zsf.length = 290 + rand(100)
  fount_p = Geom;;Point3d.new(0.0 + rand(-5..5), 2.9.m + rand(20), 0.5.m + rand(15)) # y-pos of fountain
  point = fount_p.transform(tra)
  transl = Geom;;Transformation.new(point)
  scalin = Geom;;Transformation.scaling point, rand(1..5)     
  transf = scalin * transl
  if point.z > 0.1.m
    body = simulation.emit_body(@@splashF, transf, dir_zsf, 0.2)
    body.collidable = false
  end
end

Really cool! The blues monster brother - monster blues brother -... And now bring him to life with MSPhysics...

I finally found a satisfactory solution for my imitated water fun in MSPhysics v1.0.2:
A combination of a surface with onTouch function (water surface) and an evaluation of velocity.lenght (onTouching event) and contact.points of in the area of this surface moving objects.
Anton, thank you for the examples, hints and help!

After I have tried several things and have not come to any satisfactory result, I have a suggestion:
It would be great to have a kind of "Penetration Joint" or function (onPenetration):
to connect it to one or more noncollidable objects (or faces).
The properties of objects that penetrate this noncollidable object are to be evaluated continuously:
name, mass, velocity, position of the touch/penetration, direction of movement, etc..
In other words, please bring back the old onTouch bug as an independent function!

The script works in this form good for a few objects. The falling pieces of an iceberg touch each other and produce emitting objects everywhere in the air in mass. SketchUp crashes then ... It would be good if I could use instead of .each a certain surface for the contact. Another problem is that all splashes are created simultaneously. Therefore a script for a random time point of emitting would be very helpful. I'll try this...

Without the k.destroy function it works better now. Thanks, Anton.
Controlling the disappearance of the drops by setting the lifetime is sufficient...
I have meanwhile found a way to make the marine life's bow wave smooth on the surface of the water, even if it slopes sideways.
More complicated is it, when objects are jumping out of the water, when diving or with falling ice floes causing the appropriate waves and splashes, which was very easy with the good old V0.9.9 bug function.
The gif-example is old, but shows what I mean.
Witch toucher parameters can I use from an onTouching event to get recurring waves and splashes during prolonged movement of objects in the water?

Hi Anton, once again thank you for the quick reply.
This is, of course, an interesting approach and for me something new to explore again.

A touch function as a repetitive event for generating something would be great. I think it was a good bug and you should bring it back as separate option. if it is possible...

One problem in the new solution is, that after about 700 frames the lifetime of some emitted objects doesn't end.

Comparison between V0.9.9 and V1.0.1(V1.0.2)

Have the following problems:

• the deep impact of small scripted emitters on heavy bodies.
• strong reflection of that emitted objects (non collision) on a Buoyancy Plane.
• continuous OnTouch events of object with a plane for "waves" and "splashes" don't work anymore.

Here are two files, on for SkechUp 2016 with MSPhysics v0.9.9 witch worked well and the other for SketchUp 2017 with MSPhysics v1.0.1 for witch I need help.
For the parallel tests I hade to install MSP v0.9.9 on SUp 2016 - sorry!
The GIF of V0.9.9 shows what I want to achieve.
Thanks in advance!

OnTouch-Test_01_MSP0.9.9_SUp2016.skp

OnTouch-Test_01_MSP1.0.1_SUp2017.skp

The order in Rami's Cubic Panorama is: view to
east, north, west, south, up, down
(north is here the y-axis in world coordinates)

If north is front then it is translated for 360toolkit
right, front, left, back, up, down

I can recommend a Plugin by Rami_lpm: WebGL Cubic Panorama.
Export to WebGL, Canvas, Scenes ... (hidden lines are no problem)
http://sketchucation.com/forums/viewtopic.php?f=323%26amp;t=59335%26amp;hilit=Rami

Have my animation scenario "kids with lanterns" with MSPhysics version 1.0.1 tested in a more realistic place.
With indigo RT it works as expected.
After preparing the batch rendering I used 106 seconds per frame (1920x1080, 30 frames per sec.).
With Twilight Free, rendering takes too long.
Twilight seems to go through the entire simulation from the beginning for every single image.
From picture number 200 it took 50 minutes with increasing tendency. I stopped after 200 frames...

Much better not cut off the feet, but give her something to eat ...
The flowers in the foreground are still somewhat uniform ...