public static void SetLengthIn(this Key2 k, float len)
{
var dir = (k.inTan - k.vector.f);
if (dir != Vector2.zero)
{
dir = dir.normalized;
}
k.inTan = k.vector + dir * len;
}
private int SortList(Key2 a, Key2 b)
{
if (a.time > b.time)
{
return(1);
}
else if (a.time < b.time)
{
return(-1);
}
return(0);
}
Vector2 EvaluateAOut(Key2 a, Key2 b, float t)
{
var points = new Vector2[4];
points[0] = a.vector;
points[1] = a.outTan;
points[2] = b.vector;
var Points2 = new Vector2[2];
for (int i = 0; i < 2; i++)
{
Points2[i] = Vector2.Lerp(points[i], points[i + 1], t);
}
return(Vector2.Lerp(Points2[0], Points2[1], t));
}
/// <summary>
/// 注意顺序：a在前b在后，使用a的outT，b的InT
/// </summary>
public static Vector2 Evaluate(Key2 a, Key2 b, float t)
{
var list = new List <Vector2>();
list.Add(a.vector);
if (a.outMode == KeyMode.Bezier)
{
list.Add(a.outTan);
}
if (b.inMode == KeyMode.Bezier)
{
list.Add(b.inTan);
}
list.Add(b.vector);
return(Evaluate1to4(list, t));
}
public static Vector2 LocalIn(this Key2 k)
{
return(k.inTan - k.vector.f);
}
public static Vector2 SetLocalOut(this Key2 k, Vector2 v)
{
return(k.outTan = k.vector + v);
}
public static Vector2 LocalOut(this Key2 k)
{
return(k.outTan - k.vector.f);
}
public static Vector2 SetLocalIn(this Key2 k, Vector2 v)
{
return(k.inTan = k.vector + v);
}
/// <summary>
/// add key and Sort
/// </summary>
/// <param name="key"></param>
public void InsertKey(Key2 key) // 插入帧并且立即排序
{
var k = IdxOf(key.idx);
if (k != null)
{
k.value = key.value; return;
}
Add(key);
Sort();
var i = IndexOf(key);
float len;
Vector2 dir;
if (i > 0 && i < Count - 1)
{
var a = this[i - 1];
var b = this[i + 1];
//var localT = (key.time - a.time) / (b.time - a.time);
//var t1 = Mathf.Max(0, localT - 0.2f);
//var t2 = Mathf.Min(1, localT + 0.2f);
//Debug.Log("LocalT: " + localT.ToString());
//Debug.Log("t1: " + t1.ToString());
//Debug.Log("t2: " + t2.ToString());
//Debug.Log("v1: " + a.vector);
//Debug.Log("v2: " + b.vector);
//key.inTangent = Evaluate(a, b, t1);
//key.outTangent = Evaluate(a, b, t2);
key.inTan = Vector2.Lerp(key.vector, a.vector, 0.33f);
key.outTan = Vector2.Lerp(key.vector, b.vector, 0.33f);
var lenA = a.LocalOut();
if (lenA != Vector2.zero)
{
a.SetLocalOut(lenA.normalized * lenA.magnitude * 0.5f);
}
var lenB = b.LocalIn();
if (lenB != Vector2.zero)
{
b.SetLocalIn(lenB.normalized * lenB.magnitude * 0.5f);
}
}
else if (i > 0) // i == count -1
{
len = (key.time - this[i - 1].time) * 0.4f;
dir = ((this[i - 1].vector.f - key.vector.f) * Vector2.right).normalized;
key.inTan = key.vector + dir.normalized * len;
key.outMode = KeyMode.None;
}
else if (i < Count - 1) // i == 0
{
len = (this[i + 1].time - key.time) * 0.4f;
dir = ((this[i + 1].vector.f - key.vector.f) * Vector2.right).normalized;
key.outTan = key.vector + dir.normalized * len;
key.inMode = KeyMode.None;
}
else // i == 0 and Count == 0
{
dir = Vector2.right * 0.4f;
key.outTan = key.vector + dir;
key.inMode = KeyMode.None;
}
}
