Algodoo

Am I missing something or is there no easy way to exit this scene?

Vinh2801,

I concur.

Erikfassett,

See help to see how to add your youtube video to this page.
Other users can find it at YOU Battle Against Gearlord - Playable Game in Algodoo.
Check out AlgoSound and AlgoSound Test Utility if you wish to add sound to your scene.

Erikfassett,

I agree that expecting users to download and install AlgoSound is too much for most users. The main benefit of AlgoSound might be to add synchronized sounds to YouTube videos.

Regarding exiting the scene, adding a quit button might work.

Looking good.

Thanks.

Q: Is it supposed to do that?
A: Yes, and it should have an instant center at the point of contact between the circle and ground. Since there are (2) examples, if the camera followed the circle, the linkage would move out of the scene.

P.S. Fixed.

See Instant centre of rotation.

Nice work.

Thanks. I'm not sure how useful the generator tool is, but it allows us to see something that's not normally seen. Maybe somebody will discover something interesting by playing with it.

Yes, I could make something that does that. I'm not sure if I will. I assume the locus is of the coupler center point. Creating a polygon would be easier than deriving the mathematical equation.

A polygon making tracer point might be an interesting project.

Here's how to create a polygon form a coupler curve manually:
1. Select the tracer from the coupler curve of interest.
2. Add the following code to the tracer:
_ra := [];
update = (e)=>{
sim.running ? {
_ra = _ra ++ [pos]
} : {}
};
3. Start the scene.
4. Stop the scene when the tracer gets back to its start point.
5. Create any polygon.
6. Copy the polygon from Algodoo and paste it into a text editor (Ctrl-C, Ctrl-V).
7. Copy _ra from the tracer (Ctrl-A, Ctrl-C).
8. In the text editor, replace surfaces := [...] with surfaces := [_ra(Ctrl-V)].
9. Copy everything in the editor (Ctrl-A, Ctrl-C).
10. Paste into Algodoo (Ctrl-V).

Good.

See AlgoGUI Tutorial.

I don't understand.

Thanks. See Mechanical Toolbox or Gear Generator III.

Excellent scene. Think of all the time and effort that new parents will save by using this tool.

Thanks.

Nice work as usual. Here are some suggestions:
1. Cut out the sky, neighbor's house, and left fence from the background image.
2. Convert BrickHouse.png (9.7M) to 1024 X 683 pixel BrickHouse.jpg (0.15M).
3. Put laser hit code in 18 lasers instead of 501 polygons.

Thanks for being so understanding. Now users that download the scene over the phone modem onto their Commodore 64 will save a lot of time.

The biggest risk of a toggle switch is water injection in the skin: "Fusiform swelling resulting from mechanical distention of the tissue by the injectant will usually be apparent. Several hours later, the involved digit or palm may become extremely painful, swollen and pale because of vascular compromise and tissue necrosis."

Where do I dump the load? I could dump it off the end of the earth but I risk loosing parts of my truck. I like the "vacuum" effect.

Nice work. Maybe put limit stops on the "S"/"W" linkage. Otherwise users could be pressing "S" to go down but the ship will just go up faster.

Thanks.

Thanks.

Interesting. I'm back after about an hour of looking at Henry Segerman videos and a half hour of playing with and investigating your scene. Nice presentation. I'm still wondering about how you got things to match up so closely.

P.S. I just noticed that the scissor mechanisms in this scene can be moved by powering any axle on a crossbar.

Thanks for the comment. I realized both of those things. The first item I let go because I thought it looked interesting. The second one I let go because that's the type of behavior you get with a 4-bar linkage if all the links line up. It's called a mechanical singularity. I considered putting motors at some other joints to make the motion more predictable, but decided not to because it would give the false impression that it never gets stuck.

Looking good. I had to have the van towed to the repair shop after my first drive.

Thanks. I added instructions to the scene.

Thanks for the suggestion. I have revised the GUI to include point selection.

Thyme trig functions work with radians, not degrees.