/// <summary>
/// 计算节气表（冬至的太阳黄经是-90度或270度）
/// </summary>
private void computeJieQi()
{
//儒略日，冬至在阳历上一年，所以这里多减1年以从去年开始
double jd = 365.2422 * (solar.getYear() - 2001);
for (int i = 0, j = JIE_QI.Length; i < j; i++)
{
double t = calJieQi(jd + i * 15.2, i * 15 - 90) + Solar.J2000 + 8D / 24;
jieQi.Add(JIE_QI[i], Solar.fromJulianDay(t));
}
}
/// <summary>
/// 获取气
/// </summary>
/// <returns>气</returns>
public string getQi()
{
foreach (string qi in LunarUtil.QI)
{
Solar d = jieQi[qi];
if (d.getYear() == solar.getYear() && d.getMonth() == solar.getMonth() && d.getDay() == solar.getDay())
{
return(qi);
}
}
return("");
}
/// <summary>
/// 获取节
/// </summary>
/// <returns>节</returns>
public string getJie()
{
foreach (string jie in LunarUtil.JIE)
{
Solar d = jieQi[jie];
if (d.getYear() == solar.getYear() && d.getMonth() == solar.getMonth() && d.getDay() == solar.getDay())
{
return(jie);
}
}
return("");
}
/// <summary>
/// 周推移
/// </summary>
/// <param name="weeks">推移的周数，负数为倒推</param>
/// <param name="separateMonth">是否按月单独计算</param>
/// <returns>推移后的阳历周</returns>
public SolarWeek next(int weeks, bool separateMonth)
{
if (0 == weeks)
{
return(new SolarWeek(year, month, day, start));
}
if (separateMonth)
{
int n = weeks;
DateTime c = new DateTime(year, month, day);
SolarWeek week = new SolarWeek(c, start);
int m = this.month;
bool plus = n > 0;
while (0 != n)
{
c = c.AddDays(plus ? 7 : -7);
week = new SolarWeek(c, start);
int weekMonth = week.getMonth();
if (m != weekMonth)
{
int index = week.getIndex();
if (plus)
{
if (1 == index)
{
Solar firstDay = week.getFirstDay();
week = new SolarWeek(firstDay.getYear(), firstDay.getMonth(), firstDay.getDay(), start);
weekMonth = week.getMonth();
}
else
{
c = new DateTime(week.getYear(), week.getMonth(), 1);
week = new SolarWeek(c, start);
}
}
else
{
int size = SolarUtil.getWeeksOfMonth(week.getYear(), week.getMonth(), start);
if (size == index)
{
Solar firstDay = week.getFirstDay();
Solar lastDay = firstDay.next(6);
week = new SolarWeek(lastDay.getYear(), lastDay.getMonth(), lastDay.getDay(), start);
weekMonth = week.getMonth();
}
else
{
c = new DateTime(week.getYear(), week.getMonth(), SolarUtil.getDaysOfMonth(week.getYear(), week.getMonth()));
week = new SolarWeek(c, start);
}
}
m = weekMonth;
}
n -= plus ? 1 : -1;
}
return(week);
}
else
{
DateTime c = new DateTime(year, month, day);
c = c.AddDays(weeks * 7);
return(new SolarWeek(c, start));
}
}
/// <summary>
/// 通过阳历日期初始化
/// </summary>
/// <param name="date">阳历日期</param>
public Lunar(DateTime date)
{
solar = new Solar(date);
int y = solar.getYear();
int m = solar.getMonth();
int d = solar.getDay();
int startYear, startMonth, startDay;
int lunarYear, lunarMonth, lunarDay;
if (y < 2000)
{
startYear = SolarUtil.BASE_YEAR;
startMonth = SolarUtil.BASE_MONTH;
startDay = SolarUtil.BASE_DAY;
lunarYear = LunarUtil.BASE_YEAR;
lunarMonth = LunarUtil.BASE_MONTH;
lunarDay = LunarUtil.BASE_DAY;
}
else
{
startYear = SolarUtil.BASE_YEAR + 99;
startMonth = 1;
startDay = 1;
lunarYear = LunarUtil.BASE_YEAR + 99;
lunarMonth = 11;
lunarDay = 25;
}
int diff = 0;
for (int i = startYear; i < y; i++)
{
diff += 365;
if (SolarUtil.isLeapYear(i))
{
diff += 1;
}
}
for (int i = startMonth; i < m; i++)
{
diff += SolarUtil.getDaysOfMonth(y, i);
}
diff += d - startDay;
lunarDay += diff;
int lastDate = LunarUtil.getDaysOfMonth(lunarYear, lunarMonth);
while (lunarDay > lastDate)
{
lunarDay -= lastDate;
lunarMonth = LunarUtil.nextMonth(lunarYear, lunarMonth);
if (lunarMonth == 1)
{
lunarYear++;
}
lastDate = LunarUtil.getDaysOfMonth(lunarYear, lunarMonth);
}
year = lunarYear;
month = lunarMonth;
day = lunarDay;
hour = solar.getHour();
minute = solar.getMinute();
second = solar.getSecond();
dayOffset = LunarUtil.computeAddDays(year, month, day);
compute();
}
/// <summary>
/// 通过八字获取阳历列表
/// </summary>
/// <param name="yearGanZhi">年柱</param>
/// <param name="monthGanZhi">月柱</param>
/// <param name="dayGanZhi">日柱</param>
/// <param name="timeGanZhi">时柱</param>
/// <returns>符合的阳历列表</returns>
public static List <Solar> fromBaZi(string yearGanZhi, string monthGanZhi, string dayGanZhi, string timeGanZhi)
{
List <Solar> l = new List <Solar>();
Solar today = new Solar();
Lunar lunar = today.getLunar();
int offsetYear = LunarUtil.getJiaZiIndex(lunar.getYearInGanZhiExact()) - LunarUtil.getJiaZiIndex(yearGanZhi);
if (offsetYear < 0)
{
offsetYear = offsetYear + 60;
}
int startYear = today.getYear() - offsetYear;
int hour = 0;
string timeZhi = timeGanZhi.Substring(1);
for (int i = 0, j = LunarUtil.ZHI.Length; i < j; i++)
{
if (LunarUtil.ZHI[i].Equals(timeZhi))
{
hour = (i - 1) * 2;
}
}
while (startYear >= SolarUtil.BASE_YEAR - 1)
{
int year = startYear - 1;
int counter = 0;
int month = 12;
int day;
bool found = false;
while (counter < 15)
{
if (year >= SolarUtil.BASE_YEAR)
{
day = 1;
if (year == SolarUtil.BASE_YEAR && month == SolarUtil.BASE_MONTH)
{
day = SolarUtil.BASE_DAY;
}
Solar solar = Solar.fromYmdHms(year, month, day, hour, 0, 0);
lunar = solar.getLunar();
if (lunar.getYearInGanZhiExact().Equals(yearGanZhi) && lunar.getMonthInGanZhiExact().Equals(monthGanZhi))
{
found = true;
break;
}
}
month++;
if (month > 12)
{
month = 1;
year++;
}
counter++;
}
if (found)
{
counter = 0;
month--;
if (month < 1)
{
month = 12;
year--;
}
day = 1;
if (year == SolarUtil.BASE_YEAR && month == SolarUtil.BASE_MONTH)
{
day = SolarUtil.BASE_DAY;
}
Solar solar = Solar.fromYmdHms(year, month, day, hour, 0, 0);
while (counter < 61)
{
lunar = solar.getLunar();
if (lunar.getYearInGanZhiExact().Equals(yearGanZhi) && lunar.getMonthInGanZhiExact().Equals(monthGanZhi) && lunar.getDayInGanZhiExact().Equals(dayGanZhi) && lunar.getTimeInGanZhi().Equals(timeGanZhi))
{
l.Add(solar);
break;
}
solar = solar.next(1);
counter++;
}
}
startYear -= 60;
}
return(l);
}