com.tyme.solar.SolarDay Maven / Gradle / Ivy
package com.tyme.solar;
import com.tyme.AbstractTyme;
import com.tyme.culture.Constellation;
import com.tyme.culture.Week;
import com.tyme.culture.dog.Dog;
import com.tyme.culture.dog.DogDay;
import com.tyme.culture.nine.Nine;
import com.tyme.culture.nine.NineDay;
import com.tyme.culture.phenology.Phenology;
import com.tyme.culture.phenology.PhenologyDay;
import com.tyme.festival.SolarFestival;
import com.tyme.holiday.LegalHoliday;
import com.tyme.jd.JulianDay;
import com.tyme.lunar.LunarDay;
import com.tyme.lunar.LunarMonth;
/**
* 公历日
*
* @author 6tail
*/
public class SolarDay extends AbstractTyme {
public static final String[] NAMES = {"1日", "2日", "3日", "4日", "5日", "6日", "7日", "8日", "9日", "10日", "11日", "12日", "13日", "14日", "15日", "16日", "17日", "18日", "19日", "20日", "21日", "22日", "23日", "24日", "25日", "26日", "27日", "28日", "29日", "30日", "31日"};
protected SolarMonth month;
/**
* 日
*/
protected int day;
/**
* 初始化
*
* @param year 年
* @param month 月
* @param day 日
*/
protected SolarDay(int year, int month, int day) {
this.month = SolarMonth.fromYm(year, month);
if (day < 1) {
throw new IllegalArgumentException(String.format("illegal solar day: %d-%d-%d", year, month, day));
}
if (1582 == year && 10 == month) {
if (day > 4 && day < 15) {
throw new IllegalArgumentException(String.format("illegal solar day: %d-%d-%d", year, month, day));
} else if (day > 31) {
throw new IllegalArgumentException(String.format("illegal solar day: %d-%d-%d", year, month, day));
}
} else if (day > SolarMonth.fromYm(year, month).getDayCount()) {
throw new IllegalArgumentException(String.format("illegal solar day: %d-%d-%d", year, month, day));
}
this.day = day;
}
public static SolarDay fromYmd(int year, int month, int day) {
return new SolarDay(year, month, day);
}
/**
* 月
*
* @return 月
*/
public SolarMonth getMonth() {
return month;
}
/**
* 日
*
* @return 日
*/
public int getDay() {
return day;
}
/**
* 星期
*
* @return 星期
*/
public Week getWeek() {
return getJulianDay().getWeek();
}
/**
* 星座
*
* @return 星座
*/
public Constellation getConstellation() {
int index = 11;
int y = month.getMonth() * 100 + day;
if (y >= 321 && y <= 419) {
index = 0;
} else if (y >= 420 && y <= 520) {
index = 1;
} else if (y >= 521 && y <= 621) {
index = 2;
} else if (y >= 622 && y <= 722) {
index = 3;
} else if (y >= 723 && y <= 822) {
index = 4;
} else if (y >= 823 && y <= 922) {
index = 5;
} else if (y >= 923 && y <= 1023) {
index = 6;
} else if (y >= 1024 && y <= 1122) {
index = 7;
} else if (y >= 1123 && y <= 1221) {
index = 8;
} else if (y >= 1222 || y <= 119) {
index = 9;
} else if (y <= 218) {
index = 10;
}
return Constellation.fromIndex(index);
}
public String getName() {
return NAMES[day - 1];
}
@Override
public String toString() {
return month + getName();
}
public SolarDay next(int n) {
return getJulianDay().next(n).getSolarDay();
}
/**
* 是否在指定公历日之前
*
* @param target 公历日
* @return true/false
*/
public boolean isBefore(SolarDay target) {
int aYear = month.getYear().getYear();
SolarMonth targetMonth = target.getMonth();
int bYear = targetMonth.getYear().getYear();
if (aYear == bYear) {
int aMonth = month.getMonth();
int bMonth = targetMonth.getMonth();
return aMonth == bMonth ? day < target.getDay() : aMonth < bMonth;
}
return aYear < bYear;
}
/**
* 是否在指定公历日之后
*
* @param target 公历日
* @return true/false
*/
public boolean isAfter(SolarDay target) {
int aYear = month.getYear().getYear();
SolarMonth targetMonth = target.getMonth();
int bYear = targetMonth.getYear().getYear();
if (aYear == bYear) {
int aMonth = month.getMonth();
int bMonth = targetMonth.getMonth();
return aMonth == bMonth ? day > target.getDay() : aMonth > bMonth;
}
return aYear > bYear;
}
/**
* 节气
*
* @return 节气
*/
public SolarTerm getTerm() {
SolarTerm term = SolarTerm.fromIndex(month.getYear().getYear() + 1, 0);
while (isBefore(term.getJulianDay().getSolarDay())) {
term = term.next(-1);
}
return term;
}
/**
* 七十二候
*
* @return 七十二候
*/
public PhenologyDay getPhenologyDay() {
SolarTerm term = getTerm();
int dayIndex = subtract(term.getJulianDay().getSolarDay());
int index = dayIndex / 5;
if (index > 2) {
index = 2;
}
dayIndex -= index * 5;
return new PhenologyDay(Phenology.fromIndex(term.getIndex() * 3 + index), dayIndex);
}
/**
* 三伏天
*
* @return 三伏天
*/
public DogDay getDogDay() {
SolarTerm xiaZhi = SolarTerm.fromIndex(month.getYear().getYear(), 12);
// 第1个庚日
SolarDay start = xiaZhi.getJulianDay().getSolarDay();
int add = 6 - start.getLunarDay().getSixtyCycle().getHeavenStem().getIndex();
if (add < 0) {
add += 10;
}
// 第3个庚日，即初伏第1天
add += 20;
start = start.next(add);
int days = subtract(start);
// 初伏以前
if (days < 0) {
return null;
}
if (days < 10) {
return new DogDay(Dog.fromIndex(0), days);
}
// 第4个庚日，中伏第1天
start = start.next(10);
days = subtract(start);
if (days < 10) {
return new DogDay(Dog.fromIndex(1), days);
}
// 第5个庚日，中伏第11天或末伏第1天
start = start.next(10);
days = subtract(start);
// 立秋
if (xiaZhi.next(3).getJulianDay().getSolarDay().isAfter(start)) {
if (days < 10) {
return new DogDay(Dog.fromIndex(1), days + 10);
}
start = start.next(10);
days = subtract(start);
}
if (days < 10) {
return new DogDay(Dog.fromIndex(2), days);
}
return null;
}
/**
* 数九天
*
* @return 数九天
*/
public NineDay getNineDay() {
int year = month.getYear().getYear();
SolarDay start = SolarTerm.fromIndex(year + 1, 0).getJulianDay().getSolarDay();
if (isBefore(start)) {
start = SolarTerm.fromIndex(year, 0).getJulianDay().getSolarDay();
}
SolarDay end = start.next(81);
if (isBefore(start) || !isBefore(end)) {
return null;
}
int days = subtract(start);
return new NineDay(Nine.fromIndex(days / 9), days % 9);
}
/**
* 位于当年的索引
*
* @return 索引
*/
public int getIndexInYear() {
int m = month.getMonth();
int y = month.getYear().getYear();
int days = 0;
for (int i = 1; i < m; i++) {
days += SolarMonth.fromYm(y, i).getDayCount();
}
int d = day;
if (1582 == y && 10 == m) {
if (d >= 15) {
d -= 10;
}
}
return days + d - 1;
}
/**
* 公历日期相减，获得相差天数
*
* @param target 公历
* @return 天数
*/
public int subtract(SolarDay target) {
return (int) (getJulianDay().getDay() - target.getJulianDay().getDay());
}
/**
* 儒略日
*
* @return 儒略日
*/
public JulianDay getJulianDay() {
return JulianDay.fromYmdHms(month.getYear().getYear(), month.getMonth(), day, 0, 0, 0);
}
/**
* 农历日
*
* @return 农历日
*/
public LunarDay getLunarDay() {
LunarMonth m = LunarMonth.fromYm(month.getYear().getYear(), month.getMonth()).next(-3);
int days = subtract(m.getFirstJulianDay().getSolarDay());
while (days >= m.getDayCount()) {
m = m.next(1);
days = subtract(m.getFirstJulianDay().getSolarDay());
}
return LunarDay.fromYmd(m.getYear().getYear(), m.getMonthWithLeap(), days + 1);
}
/**
* 法定假日，如果当天不是法定假日，返回null
*
* @return 法定假日
*/
public LegalHoliday getLegalHoliday() {
SolarMonth m = getMonth();
return LegalHoliday.fromYmd(m.getYear().getYear(), m.getMonth(), day);
}
/**
* 公历现代节日，如果当天不是公历现代节日，返回null
*
* @return 公历现代节日
*/
public SolarFestival getFestival() {
SolarMonth m = getMonth();
return SolarFestival.fromYmd(m.getYear().getYear(), m.getMonth(), day);
}
}
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