public Key3 Clone()
{
var n = new Key3();
n.vector = vector;
n.inTangent = inTangent;
n.outTangent = outTangent;
n.slope = slope;
n.inMode = inMode;
n.outMode = outMode;
return(n);
}
float LenBetweenKeys(Key3 a, Key3 b)
{
var factor = 1f / accuracy;
var prev = a.vector;
float len = 0;
for (int i = 1; i < accuracy; i++)
{
var curr = Evaluate(a, b, i * factor);
len += Vector3.Distance(prev, curr);
prev = curr;
}
return(len);
}
internal void Subdivide()
{
if (Count != 2)
{
return;
}
var a = keys[0];
var b = keys[1];
var v = Evaluate(a, b, 0.5f);
var i = Evaluate(a, b, 0.25f);
var o = Evaluate(a, b, 0.75f);
var k = new Key3(v, i, o);
a.ScaleOutLen(0.5f);
b.ScaleInLen(0.5f);
Insert(1, k);
}
Vector3 Evaluate(Key3 a, Key3 b, float t)
{
var points = new Vector3[4];
points[0] = a.vector;
points[1] = a.outTangent;
points[2] = b.inTangent;
points[3] = b.vector;
var Points3 = new Vector3[3];
for (int i = 0; i < 3; i++)
{
Points3[i] = Vector3.Lerp(points[i], points[i + 1], t);
}
var Points2 = new Vector3[2];
for (int i = 0; i < 2; i++)
{
Points2[i] = Vector3.Lerp(Points3[i], Points3[i + 1], t);
}
return(Vector3.Lerp(Points2[0], Points2[1], t));
}
float Slope(Key3 a, Key3 b, float t)
{
return(Mathf.Lerp(a.slope, b.slope, t));
}