/// <summary>
/// 输入新坐标系的点，返回旧坐标系的点
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="a"></param>
internal static Point Rotate(Point mpNew, SinCos a)
{
Point mp = new Point(0, 0);
mp.X = mpNew.X * a.iCos - mpNew.Y * a.iSin;
mp.Y = mpNew.X * a.iSin + mpNew.Y * a.iCos;
return(mp);
}
public override bool Equals(object obj)
{
SinCos item = (SinCos)obj;
if (item.iSin == this.iSin &&
item.iCos == this.iCos)
{
return(true);
}
return(false);
}
private static MyPoint mpBaseVector = new MyPoint(1.0f, 0);//使用x轴做基向量
/// <summary>
/// 按照参数2指定的向量与基向量的夹角计算参数1对应的绝对元胞坐标
/// </summary>
/// <param name="vector"></param>
/// <returns></returns>
internal static Point GetRealXY(Point point, MyPoint newVector)
{
if (newVector == null)
{
ThrowHelper.ThrowArgumentNullException("输入的参数不能为零");
}
//获取正弦和余弦值并且进行旋转变换
SinCos sc = VectorTools.getSinCos(mpBaseVector, newVector);
return(Coordinates.Rotate(point, sc));
}
