Michael's randomize script defines two simple Lerp functions.
code:
function Lerp( low, high, t )
{
return low + (high-low)*t;
}
function RandLerp( low, high )
{
return Lerp( low, high, Math.random() );
}
Wikipedia has a more accurate return formula, for floating point. (?)
Need to define Lerp function for vectors, (x, y, z points).
Linearly interpolate between vector v1, and vector v2.
lerpVectors ( v1, v2, interpolationFactor )
v1 - the starting vectpr.
v2 - the vector to interpolate towards.
interpolation factor, typically in the closed interval [0, 1].
- Brian
So regular javascript does not have a lerp function (?)
So the 3d lerp function must be defined in terms of simpler javascript commands.
Found 2d lerp function here:
https://www.redblobgames.com/grids/line-drawing.html
code:
1d: function lerp(start, end, t) {
return start + t * (end-start);
}
function lerp_point(p0, p1, t) {
return new Point(lerp(p0.x, p1.x, t),
lerp(p0.y, p1.y, t));
}
Note: to do 3d vector lerp, add
code:
lerp(p0.z, p1.z, t)
to the redblob code.
(Use vectorLerp() (?))
This vectorLerp is a bit confusing...negative numbers? low > high, clamping t? angleLerp vs quaternionLerp, floating point problems...
But I think that this proposed node is relatively easy to do, once understood.
Then smooth motion Move of an object could be done...
t is usually between [0, 1], but does not have to be.
negative t might be a problem?
Negative low and high, and low > high might be problems?
A good link:
https://danielilett.com/2019-09-08-unity-tips-3-interpolation/
