/// <summary>
/// 男命柱中辰、巳并见，谓之天罗；女命柱中戌、亥并见，谓之地网
/// </summary>
/// <returns></returns>
private string[] 天罗地网(GanZhi shiyun)
{
if (this.性别 == 性别.无)
{
throw new Exception("未确定性别，无法计算天罗地网。");
}
string[] pattern = this.性别 == 性别.男 ? new string[] { "辰", "巳" } : new string[] { "戌", "亥" };
var res = this.GZ.Select(gz => pattern.Any(p => p == gz.Zhi.Name) ? gz.Zhi.Name : string.Empty);
res = res.Distinct();
bool hasTianLuoDiWang = res.Count(b => b != string.Empty) >= 2;
if (shiyun != null)
{
bool 是否符合流年 = pattern.Contains(shiyun.Zhi.Name);
if (hasTianLuoDiWang)
{
// 原局有天罗地网，流年要再碰到
return(是否符合流年 ? new string[0] : null);
}
else
{
res = res.Concat(是否符合流年 ? new string[] { shiyun.Zhi.Name } : new string[0]);
res = res.Distinct();
return(res.Count(b => b != string.Empty) >= 2 ? new string[0] : null);
}
}
else
{
return(hasTianLuoDiWang ? new string[0] : null);
}
}
private static 忌日 Calc月破(LnDate date)
{
var 月 = new GanZhi(date.MonthGZ);
var 日 = new GanZhi(date.DayGZ);
return(Math.Abs(月.Zhi.Index - 日.Zhi.Index) == 6 ? LnBase.忌日.月破 : 忌日.百无禁忌);
}
private static 忌日 Calc岁破(LnDate date)
{
var 年 = new GanZhi(date.YearGZ);
var 日 = new GanZhi(date.DayGZ);
return(Math.Abs(年.Zhi.Index - 日.Zhi.Index) == 6 ? LnBase.忌日.岁破 : 忌日.百无禁忌);
}
private BaZiList <GanZhi> InitBaZiFromDateTime(DateTime date, bool 确定时辰)
{
this.datetime = new LnDate(date);
this.time = 确定时辰 ? date.TimeOfDay : TimeSpan.Zero;
GanZhi 年 = new GanZhi(this.datetime.YearGZ);
GanZhi 月 = new GanZhi(this.datetime.MonthGZ);
GanZhi 日 = new GanZhi(this.datetime.DayGZ);
LnDate 明天 = this.datetime.Add(1);
if (date.Hour >= 23)
{
日 = 日.Add(1);
年 = new GanZhi(明天.YearGZ);
月 = new GanZhi(明天.MonthGZ);
}
GanZhi 时 = GanZhi.Zero;
if (确定时辰)
{
Zhi 时支 = Zhi.Get((int)((date.Hour + 1) / 2) % 12);
时 = 日.Gan.起月时(时支, 柱位.时);
}
return(BaZiList.Create(年, 月, 日, 时));
}
/// <summary>
/// 计算胎元干支
/// </summary>
/// <returns></returns>
private static GanZhi CalcTaiYuan(BaZiList <ShiYun> bazi)
{
var gan = (bazi.月.Gan.Index + 1) % 10;
var zhi = (bazi.月.Zhi.Index + 3) % 12;
var gz = new GanZhi(gan, zhi);
return(gz);
}
internal string[] Calc(GanZhi gz)
{
if (this.CalcSpec == null)
{
return(new string[] { Zhi.Get(this.Pattern[this.Fetch(gz)]).Name });
}
else
{
return(this.CalcSpec(gz));
}
}
internal static string[] 贵人(GanZhi gz)
{
int[,] pattern = new int[10, 2] {
{ 1, 7 }, { 8, 0 }, { 11, 9 }, { 11, 9 }, { 1, 7 }, { 8, 0 }, { 2, 6 }, { 2, 6 }, { 3, 5 }, { 3, 5 }
};
List <int> res = new List <int>();
res.Add(pattern[gz.Gan.Index, 0]);
res.Add(pattern[gz.Gan.Index, 1]);
return(res.Select(i => Zhi.Get(i).Name).ToArray());
}
public static HuangLi 黄历日(LnDate date)
{
HuangLi huanli = new HuangLi();
huanli.忌日 |= LnBase.Calc岁破(date);
huanli.忌日 |= LnBase.Calc月破(date);
huanli.忌日 |= LnBase.Calc上朔(date);
huanli.忌日 |= LnBase.Calc杨公忌日(date);
GanZhi yue = new GanZhi(date.MonthGZ);
GanZhi ri = new GanZhi(date.DayGZ);
huanli.建除 = JianChu.Get(yue.Zhi, ri.Zhi);
return(huanli);
}
/// <summary>
/// 计算年份下标差值
/// </summary>
/// <param name="year">要查找的年干支</param>
/// <param name="startYear">开始的年份</param>
/// <param name="forward">方向</param>
/// <returns></returns>
private static int CalcYearDiff(GanZhi year, int startYear, 方向 forward)
{
LnDate lndate = new LnDate(startYear, 2, 10);
int yearDiff = year.Index - (new GanZhi(lndate.YearGZ)).Index;
if (forward == 方向.逆行)
{
yearDiff = yearDiff < 0 ? yearDiff : (yearDiff - 60);
}
else
{
yearDiff = yearDiff < 0 ? (yearDiff + 60) : yearDiff;
}
return(yearDiff);
}
/// <summary>
/// 用八字寻找公历时间。
/// </summary>
/// <param name="year">年干支</param>
/// <param name="month">月干支</param>
/// <param name="day">日干支</param>
/// <param name="startYear">开始时间</param>
/// <param name="forward">方向： -1 往以前日子， 1 往后面的日子</param>
/// <returns></returns>
public static DateTime 查找八字(string year, string month, string day, int startYear, 方向 forward)
{
// 看年月是否匹配
GanZhi n = new GanZhi(year);
GanZhi m = new GanZhi(month);
if (n.Gan.起月时(m.Zhi, 柱位.月) != m)
{
throw new ArgumentException($"'{year}'年不存在'{month}'月。");
}
// 开始运算
int yearDiff = CalcYearDiff(new GanZhi(year), startYear, forward);
int monthIndex = m.Zhi.Index == 0 ? 12 : m.Zhi.Index;
startYear += m.Zhi.Index == 1 ? 1 : 0;
// 上下搜索600年
for (int periode = 0; periode < 10; periode++)
{
int f = forward == 方向.顺行 ? 1 : -1;
LnDate lndate = new LnDate(startYear + yearDiff + f * 60 * periode, monthIndex, 1);
while (lndate.JieQiTime == TimeSpan.Zero)
{
lndate = lndate.Add(1);
}
if (lndate.YearGZ != year || lndate.MonthGZ != month)
{
throw new Exception("计算思路有错误！");
}
while (lndate.MonthGZ == month)
{
if (lndate.DayGZ == day)
{
return(lndate.datetime);
}
lndate = lndate.Add(1);
}
}
throw new Exception("六百年内找不到结果！");
}
private IEnumerable <ShiYun> 起小运(DateTime start, DateTime end)
{
List <ShiYun> res = new List <ShiYun>();
for (int year = start.Year; year <= end.Year; year++)
{
int diff = year - this.time.DateTime.Year + 1;
int f = this.方向 == 方向.顺行 ? 1 : -1;
GanZhi gz = this.time.时.Add(f * diff);
ShiYun xiaoyun = new ShiYun(gz, ShiYun.YunType.小运, this.time.Bazi);
xiaoyun.Start = new DateTime(year, this.time.DateTime.Month, this.time.DateTime.Day);
xiaoyun.End = new DateTime(year + 1, this.time.DateTime.Month, this.time.DateTime.Day);
res.Add(xiaoyun);
}
return(res);
}
/// <summary>
/// 计算命宫干支
/// </summary>
/// <returns></returns>
private static GanZhi CalcMingGong(BaZiList <ShiYun> bazi)
{
if (bazi.时 == GanZhi.Zero)
{
return(GanZhi.Zero);
}
var sum = bazi.月.Zhi.Index + 1 + bazi.时.Zhi.Index + 1;
var zhi = sum < 14 ? 14 - sum : 26 - sum;
zhi = zhi - 1;
var startGan = bazi.年.Gan.起月干.Index;
var diff = ((zhi - 2) + 12) % 12;
var gan = (startGan + diff) % 10;
var ganzhi = new GanZhi(gan, zhi);
return(ganzhi);
}
/// <summary>
/// 返回神煞的计算结果。
/// 1. 对于地支类，返回一个字符串数组。
/// 2. 对于布尔值类型，空数组代表“有”， Null代表“没有”
/// </summary>
/// <returns></returns>
public string[] Calc(GanZhi shiyun = null)
{
GanZhi[] gzs = shiyun == null ? this.GZ : new GanZhi[] { shiyun };
if (!this.ssBase.HasCalcFunc)
{
switch (this.Name)
{
case "四废":
return(this.四废(gzs));
case "孤辰寡宿":
return(this.孤辰寡宿(gzs));
case "阴差阳错":
return(ShenSha.阴差阳错(gzs));
case "天罗地网":
return(this.天罗地网(shiyun));
case "魁罡":
return(ShenSha.魁罡(gzs));
}
return(null);
}
else
{
List <string> res = new List <string>();
foreach (var gz in gzs)
{
var tmp = this.ssBase.Calc(gz);
res.AddRange(tmp);
}
return(res.Distinct().ToArray());
}
}
public override bool Equals(object obj)
{
GanZhi gz = obj as GanZhi;
return(obj is GanZhi && this.Name == gz.Name);
}
/// <summary>
/// 甲年癸亥日，乙年己巳日。。。。。。
/// var arr = ["癸亥", "己巳", "乙亥", "辛巳", "丁亥", "癸巳", "己亥", "乙巳", "辛亥", "丁巳"];
/// </summary>
/// <param name="date"></param>
/// <param name="type"></param>
/// <returns></returns>
private static 忌日 Calc上朔(LnDate date)
{
var 年 = new GanZhi(date.YearGZ);
return(LnBase.朔Def[年.Gan.Index] == date.DayGZ ? LnBase.忌日.朔 : 忌日.百无禁忌);
}
private static int 取干(GanZhi gz)
{
return(gz.Gan.Index);
}
internal static int 会局(GanZhi z)
{
return((int)(((z.Zhi.Index + 1) % 12) / 3));
}
public ShiYun(GanZhi gz, YunType type, BaZiList <GanZhi> bz) : this(gz.Index, type, bz)
{
}
internal static string[] 旬空(GanZhi gz)
{
var index = 10 - (int)(gz.Index / 10) * 2;
return(new string[] { Zhi.Get(index).Name, Zhi.Get(index + 1).Name });
}
internal static string[] 天医(GanZhi gz)
{
return(new string[] { Zhi.Get((gz.Zhi.Index - 1 + 12) % 12).Name });
}
internal static int 合局(GanZhi z)
{
return((z.Zhi.Index % 12) % 4);
}