/// <summary>
/// 求发射光线
/// </summary>
/// <param name="inDirection">入射光线</param>
/// <param name="inNormal">法线</param>
/// <returns></returns>
public static Double3 Reflect(Double3 inDirection, Double3 inNormal)
{
return(inDirection - Double3.Project(inDirection, inNormal) * 2);
}
/// <summary>
/// 求向量vector 在平面上的投影
/// </summary>
/// <param name="vector"></param>
/// <param name="planeNormal">平面法向量</param>
/// <returns></returns>
public static Double3 ProjectOnPlane(Double3 vector, Double3 planeNormal)
{
return(vector - Double3.Project(vector, planeNormal));
}