Hi,

I have been trying to draw real time as the co-ordinates get generated using Ruby in Sketchup.
The tutorial here shows how to draw 10 steps.
http://code.google.com/apis/sketchup/docs/tutorial_geometry.html

But problem is if I have to draw 1000 blocks or more ,sketchup hangs until the loop is run and all the points are generated and then draws them all it once. What if the points are being generated one by one randomly as time goes and they are to be plotted in sketchup? More precisely how does one draw a real time graph in sketchup using ruby. Say now I have a block at 100,100,100 and then the next frame I have to draw it at 110,110,110 and keep on updating its position frame by frame.

Please suggest.Thanks in advance.

Hi,

Take a look at my work where I used google sketchup and sketchy physics to model my robot.Developed an external API to sketchy physics which help me integrate the environment with my simulator.
http://www.youtube.com/watch?v=Wf9Y-lB_t7s
Sincere thanks to the creators of Google sketchup and sketchy physics.

Sincerely
Sriranjan

Hello people.Please give your suggestions on this.

Hi,

Is it possible to access the variables of sketchy physics using an external program?If yes please tell me how.

As it is possible to write a Ruby script as a plugin and access the google sketchup variable ,is such a thing also possible with the variables of sketchy physics?

Well since googles products are mostly innovative,simple and based on intuition their products work like awesome.One thing which most of the physics engine don't do is: Say in a physics engine I make body move over a surface from point A to Point B with just a simple command "Move body M from point A(x1,y1,z1) to B(x2,y2,z2).But there isn't a feature which dynamically shows the free body diagram of the body with the forces working on it.Phiilips,if one can incorporate such a feature where in the force vectors are indicated by a solid translucent arrow whose orientation and length shows the forces acting on the body qualitatively then it would improve the visualization of the physics happening in there and this would also help the person better study the model.I feel it would be simply awesome

Hi,I want to know how to create motion with sketch physics producing an animated sequence.I have been reading tutorials from wikia but the one here about using ruby scripts for motion sequencing does not tell where to type the ruby script.
http://sketchyphysics.wikia.com/wiki/Intermediate

In the beginner tutorial it is mentioned to type the small commands like oscillator(10) in the controller box as mentioned in the link here in beginners tutorials.http://sketchyphysics.wikia.com/wiki/Beginner
There is a blue box further down, labelled 'controller'. This is very, very important, as this is where (for now) all of your script and formulas will go.

But I want to use if and else loops and create motion sequences,set the servo values to particular angle etc..Could some experienced person tell me how to do this?

I think if I write the plugin for another physics engine ,I would be reinventing the wheel ,atleast a part of it.If Newton SDK would also develop into newer version and improve like Sketchy Physics ,it would be great.I am not as capable as you in terms of programming.I will have to learn how to write Ruby plugins first.But an Idea is to combine a mathemetical computation software like Octave it might be good.Though it may not match Matlab but it would be great for academic purpose.

Link to Octave :
http://wiki.octave.org/

Parallely at one point of time in the future if you would give Mass and coefficient of friction support it would improve as a physics analysis software.Also there are open source FEA solvers which analyze the model dynamically taking it as a mesh.

Also develop more features like force vectors,RPM for motor etc.

Just was looking at PhysX.I think it was owned by Ageia and now by NVDIA.It looks better than Newton SDK (just looked at some demo videos).But I am not aware of it features like mass,cofefficient of friction etc..do you have any idea?

I think I am on my own now.But could you help me extend the same physics plugin idea to ODE.In ODE also there are several joints available.
http://www.ode.org/joints.pdf

And ODE was available since 2002.Now ODE has more features than the Newtons SDK.If Newton had the facility of setting parameters like mass and coefficient of friction,etc it would be great.Also ODE uses OpenGl.Could you please guide me about how to integrate it.

And ODE has a better documentation http://www.ode.org/ode-latest-userguide.html

Also philips, there is one more physics engine called Open Dynamics Engine which is used more in research.It would have been great if you would have developed sketchy physics on this or also made one using this.So that even academic research people who have used ODE (which does not have GUI)could use it now flexibly with google sketchup.Thus benefiting both.

Hi Phil,
I still want to be using sketchy physics while I am doing that.I want to integrate to matlab and still program and change parameters like mass,coefficient of friction etc..It is like matlab interacts with google sketch up models via the sketchy physics.Could you please suggest me how to do this?

Even if there is an API for sketchy physics it would be great.Because the modeling done by google sketchup is top quality.So if there is some sort of an API where in the user can program in C or VC++ using Microsoft VC++ such that they can change the mass ,coefficient of friction of the bodies it would be useful as a research toll just like other softwares in the industry like MSC Nastran ,Open Dynamics Engine etc..at one level.It would be great if we can program with the API.

Hi,

Sketchy physics has been helping me to animate the models to a basic physics environment.I want to add some mathematical model and constraints to my model in sketchy physics.Is there I way I can integrate this with Matlab to do the math solving?Please let me know.It would be great if it can be done.It would be good for research and engineering apps.

Has anyone simulated gears using sketchy physics?I have the STL file imported to Skp format and I want to simulate the gear train.Please advice me.

Hi,I am new to sketchy physics.I want to simulate a gear train .Could someone please tell me how to?Alse is there a tutorial section for sketchy physics like sketch up tutorials?

Please let me know.