Coding Math: Episode 43 - Kinematics Part I

Back from some time off, starting a new series on forward and inverse kinematics.

[Laranjadinhoq]

It's good to have you back, Keith! :)

[nicolasberger]

Thanks a lot !
After a lot of Internet research, it's by far the most well explained, step by step, and deep enough series of tutorial about IK and processing i found.
Really appreciated !

[Polaroidon]

Great to have yo back! As always, thanks for your hard work!

[wCupOfTea]

Very interesting! Going to try coding this.

[kevnar]

Next, you use the same logic from the fractal trees to add arms to the parents recursively, and then animate them all so it looks like the tree is waving in the wind.

[AfterthoughtTV]

Hey, you should make some videos on Quaternions.

[pederjohnson]

I've mostly seen objects in Javascript as being like this:
function Object(){
this.variable = value;
...
}

and a few times I see them as:
var Object = {
variable: value,
...
}

but I've never seen it as like what's shown as the arm object:
var Arm = Arm || {
...
}
My main question is what does the "Arm ||" do?

[noxabellus]

Yeeessss! Thank you so much for this. Exactly what I need

[siba]

Hi bro, I just made the same example with the drawing, but is not drawing for some reason, and I even paste ur code to see if I have an error, but urs is not drawing either.

[Xeronimo]

What kind of variable is 'parent' actually though? I know it's enough to just declare it as var in Javascript but I'm trying to understand it and also to translate it to Processing ... 'parent' is a variable of the kind 'Arm', right? But how can it also be a boolean then (since it's used in: while (parent) {} ... ? Thanks!

[greatveemon]

Can you recommend a book for something like this? Never been applied law of physics on a programming.

[pnesap]

neat, you could make a JavaScript robot.