Algodoo

Question about polygon maker:

Is it possible to create ideal and perfect polygons with sharp edges? So ideal like the rectangle and its perfect edges?

I hate the rounded edged inaccurateness when it is handmade.
I need an precise and absolute equilateral Pentagon.

Would that be possible to realize somehow?

Oh to your scene:
I am on a computer where i cannot test your scene at the moment. But later i will do it.

Interesting effect. It appears almost 3D.

s_noonan -- Thanks!

S.A. -- Lots of people have complained about the rounded or non-sharp polygon edges. If you search through the forum, you will find a few posts concerning that issue, with a couple of suggestions for improving it, but as far as I recall, there really isn't much that can be done to make nice sharp corners as expected. It's just the way it was done.

S.A.,

Use POLYGON CREATOR. The polygons are very accurate, even if thy don't look that way.

P.S. I was wrong and you are right. The corners are rounded. I checked them by reflecting a laser off of their surface. I was going on my (faulty) memory. I should have tested it out before making the statement above.

thx s_noonan its really nice but not precisely enough. The Corners are rounded.

I found a (handmade not scripted) solution for the Hexagon. You can see it in my new scene.
Now i am trying that for a Pentagon, too. I dont want to do it approximatley - it has to be exact!

S.A. -- So, basically your "fix" is to take boxes (rectangles) and group them together to form the desired shape (such as your simulated "Star of David" in your recent scene). Is that correct?

Yes your're right! BUT with a Hexagon it is not any Problem to do that.
For a Pentagon/Pentagram its a lot more difficult to realize it (accurately).

Have you any Idea to transfer that principle to a pentagon?

The point is: the Hexagon has edges paralel to the opposite- the pentagon not!

and the hexagon sides turns in an angle of 60 degree(easy to realize through the precise "lock in angle" function).
The Pentagon sides in has a difficult side turn angle of 72 degree (there is no "lock in place" you can do it just approximately - thats never exact!).

Suggestions? perhaps something through scripting? (i never understood the angle system in the script menu because its never a 360 degree system)

Algodoo angles are in Radian units, and the range is from -pi to +pi rads. So, if you want to work in degrees, you have to do the conversion.

Thank you very much , this information was so helpful, my invention is progressing now... its a pentagonal quantum jump in algodoo! ;-D

I think precise basic geometrics are really helpful for future projects/scenes because everything is based on geometrics.

We should establish a science-group for algodoo - for fundamental research in improving geometries, precision and modular objects (and mechanics).

a "universal" algodoo standard for modular objects would be nice! Sorry you see i am a German

S.A. quote: "
We should establish a science-group for algodoo - for fundamental research in improving geometries, precision and modular objects (and mechanics)."


I started using Algodoo back in June of 2012, and that was about the time when most of the very active members began to lose interest in it. Before that timeframe, people were very actively experimenting with it, improving it, and sharing its "secrets" with each other. I would like to see that kind of interest and activity return here, because, in my opinion, Algodoo is still a very worthwhile educational tool that is worthy of keeping alive and growing. It will become obsolete in a couple of years as technology improves, and as other programs come onto the market which will be much more powerful than Algodoo (a 3D version, for example). Until that time comes, I will continue to use it and promote it.

Is there already a thing like Algodoo 3D? not original but similar?

(e)=>{app.playmode=sim.running} QAQ why...

S.A. -- Sure, there are a few 3D physics simulator programs out there, and I believe that Algoryx has one too, but I don't know much about it such as cost and target audience.