A littleBigGeekBook with all the equations of LittleBigPhysics in would be invaluable :)Quote:
Originally Posted by KernelM
Think length vs area ;)Quote:
Originally Posted by goldenclaw13
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A littleBigGeekBook with all the equations of LittleBigPhysics in would be invaluable :)Quote:
Originally Posted by KernelM
Think length vs area ;)Quote:
Originally Posted by goldenclaw13
Exactly.Quote:
Originally Posted by rtm223
I'm glad my thread is still helping people out, even though I didn't do much of the research myself.
Ah, I see, so 2.5 units is the height and width of the block...
I have a big physics question i think could stump a few people here ;)
Someone should calculate how heavy the materials are in circle form...
EDIT: We should get a few people and actually start making a book, from weights, to learning all of the bolts and connectors :)
That shouldn't be too hard, and it's more of a geometry equation than a physics one, since we already know the weight per area. I'm way too lazy to figure it out though.Quote:
Originally Posted by goldenclaw13
Area = pi * (radius squared)
But most of the circles in the game actually have visible sides, so you would have to count them up and base your equation on that to truly figure out the area.Quote:
Originally Posted by rtm223
Oh darn your pernickety ways BSprague :p Especially when you are right.
Well, the area of an icosogon is:
http://upload.wikimedia.org/math/0/d...0c62bc25f8.png
Where T is the edge length.
Just need to work out the edge length from crosssectional distance and we can formulate an equation from the square it fits into. I'm sure that would be much more useful and easy to use than approximating it to a real circle :rolleyes:
Although that assumes the weight is calculated in this way. Have you noticed that the engine implies a curve on "circular" objects - you can't get the flat endges to go flush with another object
Is it bad that I know offhand that LBP circles have 20 sides?
I thought it was common knowledge :pQuote:
Originally Posted by rtm223
I never knew circular edges were implied to be smooth. That's just weird.
Or you can use app on this page. It also has four other equations to find area knowing number of sides and length of a single side.Quote:
Originally Posted by rtm223
Yeah I was trying to use a circle as a 20 sided shapa and butt it up against 2 walls so I could position mag switches accurately, and it wouldn't. It's even weirder if you make a circle huge and try to run on it :) My guess is that it greatly reduces the calcualtions for collision detection - hence the fact that swapping circles for squares in wobbley logic doesn't appear to change the "edges" thermo - circles genuinely do have 1 edge.Quote:
Originally Posted by comphermc
Nice find. You would still want to know the area based upon the total width of the object, though.Quote:
Originally Posted by BSprague
You guys are saying that LBP circles have 20 sides? I would have thought they get more when the circles get bigger...
And all this math is starting to confuse me XD
It's a way to make rendering more efficient. 20 sides is a lot less to render than 360 sides for example. The collisions are detected as though it is round though I believe.Quote:
Originally Posted by goldenclaw13
No, I'm almost positive the collisions are used with the 20 sides as well. When attaching a piston to a checkpoint, I get never get it perfectly on the top or bottom, it is always a bit offset...
When you attach pistons, yes. But try doing what I said and making a massive circle, then running on top. Or pushing the flat edge against a wall.Quote:
Originally Posted by goldenclaw13
Oh, yes, I was just using pistons as an example.
My first visit and already I've learnt enough to keep me busy for a while :D
In the OP table of material specifications, what does the resistance measurement mean?
Also, is the friction measurement just a relative guideline to compare which materials have more friction, or does it have a specific meaning in terms of length/volume of some standard block of each material.
Another way to stae sackboys weight is in squares of materials. Sackboy weighs as much as one small grid block of metal, half a small grid block of wood, and 3/4 a block of cardboard. (all in one plane.) I did some testing like this, and weighed eery material like this.
Also, to make a circle with more than 20 sides, couldn't you just place it, rotate it, and place again? And over and over?
this is really useful thanks a lot for posting it here