/// <summary>
/// 计算干支纪年
/// </summary>
private void computeYear()
{
yearGanIndex = (year + LunarUtil.BASE_YEAR_GANZHI_INDEX) % 10;
yearZhiIndex = (year + LunarUtil.BASE_YEAR_GANZHI_INDEX) % 12;
//以立春作为新一年的开始的干支纪年
int g = yearGanIndex;
int z = yearZhiIndex;
//精确的干支纪年，以立春交接时刻为准
int gExact = yearGanIndex;
int zExact = yearZhiIndex;
if (year == solar.getYear())
{
//获取立春的阳历时刻
Solar liChun = jieQi["立春"];
//立春日期判断
if (solar.toYmd().CompareTo(liChun.toYmd()) < 0)
{
g--;
if (g < 0)
{
g += 10;
}
z--;
if (z < 0)
{
z += 12;
}
}
//立春交接时刻判断
if (solar.toYmdhms().CompareTo(liChun.toYmdhms()) < 0)
{
gExact--;
if (gExact < 0)
{
gExact += 10;
}
zExact--;
if (zExact < 0)
{
zExact += 12;
}
}
}
yearGanIndexByLiChun = g;
yearZhiIndexByLiChun = z;
yearGanIndexExact = gExact;
yearZhiIndexExact = zExact;
}
/**
* 干支纪月计算
*/
private void computeMonth()
{
Solar start = null;
Solar end;
//干偏移值（以立春当天起算）
int gOffset = ((yearGanIndexByLiChun % 5 + 1) * 2) % 10;
//干偏移值（以立春交接时刻起算）
int gOffsetExact = ((yearGanIndexExact % 5 + 1) * 2) % 10;
//序号：大雪到小寒之间-2，小寒到立春之间-1，立春之后0
int index = -2;
foreach (string jie in LunarUtil.JIE)
{
end = jieQi[jie];
string ymd = solar.toYmd();
string symd = null == start ? ymd : start.toYmd();
string eymd = end.toYmd();
if (ymd.CompareTo(symd) >= 0 && ymd.CompareTo(eymd) < 0)
{
break;
}
start = end;
index++;
}
if (index < 0)
{
index += 12;
}
monthGanIndex = (index + gOffset) % 10;
monthZhiIndex = (index + LunarUtil.BASE_MONTH_ZHI_INDEX) % 12;
//序号：大雪到小寒之间-2，小寒到立春之间-1，立春之后0
int indexExact = -2;
foreach (string jie in LunarUtil.JIE)
{
end = jieQi[jie];
string time = solar.toYmdhms();
string stime = null == start ? time : start.toYmdhms();
string etime = end.toYmdhms();
if (time.CompareTo(stime) >= 0 && time.CompareTo(etime) < 0)
{
break;
}
start = end;
indexExact++;
}
if (indexExact < 0)
{
indexExact += 12;
}
monthGanIndexExact = (indexExact + gOffsetExact) % 10;
monthZhiIndexExact = (indexExact + LunarUtil.BASE_MONTH_ZHI_INDEX) % 12;
}