/// <summary>
/// 判断目标点，在夹角内，
/// </summary>
/// <param name="target">目标点</param>
/// <param name="startPoint">起点</param>
/// <param name="indir">起点出发的2个边界向量</param>
/// <param name="outdir">起点出发的2个边界向量</param>
/// <returns></returns>
public static bool CheckPointInCorns(Float2 target, Float2 startPoint, Float2 indir, Float2 outdir)
{
Float2 diff = target - startPoint;
if (diff == Float2.zero)
{
return(false);
}
float ret = Float2.Cross(outdir, diff) * Float2.Cross(indir.normalized, diff);
if (ret < 0)
{
Float2 mid = indir.normalized + outdir.normalized;
// 添加异常处理,防止在反方向
if (Float2.Dot(diff, mid) < 0)
{
return(false);
}
else
{
return(true);
}
}
else if (ret == 0)
{
if (Float2.Dot(diff, indir) <= 0)
{
return(false);
}
if (indir.sqrMagnitude < diff.sqrMagnitude)
{
return(true);
}
else
{
return(false);
}
}
return(false);
}
/// <summary>
/// 垂直判断，考虑误差
/// </summary>
/// <param name="a"></param>
/// <param name="b"></param>
/// <returns></returns>
public static bool CheckVertical(Float2 a, Float2 b)
{
return(System.Math.Abs(Float2.Dot(a, b)) < MathUtil.kEpsilon ? true : false);
}