Centripetal Force
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@unknownuser said:
Well you can display the velocity of an object by putting this code into it's Script field:
ontick{
vector = Geom::Vector3d.new( getVelocity )
logLine(vector.length.to_s)
}I tried selecting "OnTick" for my cone, and putting the script you wrote into the blue box that appeared below it. But it keeps saying the formula does not compile. am I doing something wrong?
Thanks,
--PinkSkink
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Put the code in the Scripted field. Not the ontick field.
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I hate to be so bothersome, but I can't seem to find this scripted field anywhere.
Is it in the UI for the cone? Perhaps you could give me a screenshot?Sorry about being so annoying!
--PinkSkink
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Oh! Thanks, Jay, I need to update my Sketchyphysics, then.
--PinkSkink
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Hi everyone!
I downloaded the latest version of SketchyPhysics, and everything works great now. I have only one problem. For things to work, my cone must be about a yard in diameter. I actually need it to be more like a few inches. But when I make it that small, the joints and things don't seem to work. It seems like SketchyPhysics is unable to sense certain objects when they are below a certain size. Is there a setting I can change to fix this?
Thank you,
PinkSkink
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It is a limitation of the physics engine.
There is a setting in the plugins->Sketchy Physics settings dialog that will allow you to adjust world scale. It is still tricky tho. Best to make models big enough so that they work with the default settings.
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I see. Ok, thanks.
--PinkSkink
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Just a little update.
Everything is working great, including the worldscale, which i did get to work without glitching. However, the velocities needed to expel the ball seem about 10x too big. I'm wondering, in SketchyPhysics is the default acceleration due to gravity 9.8 m/sec^2(32 ft/sec^2), or is it something else?
--PinkSkink
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That is more or less what gravity is. All other units are not in any sort of real world scale. If 10x works then its "right".
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Interesting. Thanks very much!
--PinkSkink
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