/// <summary>
/// 判断点point是否在矩形内
/// </summary>
public static bool IsPointInRectangle(Vector3 point, Vector3 rectA, Vector3 rectC, Vector3 rectB, Vector3 rectD)
{
Vector3 vector = rectC - rectA;
float size = -(vector.magnitude / 2f);
vector = Math3d.AddVectorLength(vector, size);
Vector3 linePoint = rectA + vector;
Vector3 vector2 = rectB - rectA;
float num = vector2.magnitude / 2f;
Vector3 vector3 = rectD - rectA;
float num2 = vector3.magnitude / 2f;
Vector3 a = Math3d.ProjectPointOnLine(linePoint, vector2.normalized, point);
float magnitude = (a - point).magnitude;
a = Math3d.ProjectPointOnLine(linePoint, vector3.normalized, point);
float magnitude2 = (a - point).magnitude;
return(magnitude2 <= num && magnitude <= num2);
}