Hello! I thought I’d share a library that I wrote for MotionBuilder as a personal exercise. It’s a declarative language for defining relation constraints. Here’s a video that shows how it’s used:
Source: https://github.com/awforsythe/fbrelation
Documentation: http://awforsythe.com/fbrelation/
In a nutshell: I got really tired of creating relation constraints with the MotionBuilder API, so I wrote a library that turns this…
linear_interpolate
{
a [input="Number"]
b [input="Number"]
t [input="Number"]
sub [group="Number", type="Subtract (a - b)"]
mult [group="Number", type="Multiply (a x b)"]
add [group="Number", type="Add (a + b)"]
r [output="Number"]
b -> sub.a # b - a
a -> sub.b
sub.Result -> mult.a # (b - a) * t
t -> mult.b
a -> add.a # a + ((b - a) * t)
mult.Result -> add.b
add.Result -> r
}
…into this:
If you’re thinking, “just import the constraint from an FBX file, dummy,” you have a decent point. But then you have no sense of fun, either.