Vector3 GetVelocity(float t)
{
int index = 0;
if (t >= 1f)
{
t = 1f;
index = points.Length - 4;
}
else
{
float n = t * CurveNum;
index = (int)n;
t = n - index;
index *= 3;
}
Vector3 v = transform.TransformPoint(BezierInterface.GetFirstDerivative(points[index], points[index + 1], points[index + 2], points[index + 3], t));
v -= transform.position;
return(v);
}
public Vector3 GetPoint(float t)
{
/*
* 期望曲线在全路径下进行计算
*
* @ @ @ @ @ @ @
* 0 1 2 3 4 5 6
*
* 目前曲线个数 : 2
* 假如当前t = 0.5f; 0.6,
*
* t * curveNum
* 取整 -> 第几条曲线 -> N
* 取余 -> 第N跳曲线的进度值
*
*
* */
int index = 0;
if (t >= 1f)
{
t = 1f;
index = points.Length - 4;
}
else
{
float n = t * CurveNum;
index = (int)n;
t = n - index;
index *= 3;
}
Vector3 v = BezierInterface.GetPoint(points[index], points[index + 1], points[index + 2], points[index + 3], t);
return(transform.TransformPoint(v));
}